NL2027842B1

NL2027842B1 - Gully cover assembly and gully comprising such an assembly

Info

Publication number: NL2027842B1
Application number: NL2027842A
Authority: NL
Inventors: Elisabeth Maria Theunissen Jack
Original assignee: Tbs Sva Groep B V
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2022-10-12

Abstract

The present invention relates to a gully cover assembly, comprising: - a frame, configured to be connected to or embedded in a gully pot; 5 - a removable cover, configured to cover the gully pot on a top side thereof; - two protrusions arranged on opposite sides of the cover and defining a rotation axis around which the cover is rotatable between an opened position allowing access to the gulley pot and a closed position covering the gulley pot when said cover is arranged in said frame; - a guide slot configured to guide a first protrusion of the two protrusions to 10 thereby allow the cover to be removed from the frame or placed in the frame without destructing the cover or any of the two protrusions, and without interference with a pavement surrounding the gully pot.

Description

Gully cover assembly and gully comprising such an assembly The present invention relates to a gully cover assembly, as well as to a gully comprising such a gully cover assembly.

Conventional gullies are normally arranged in a street or sidewalk, after which pavement is arranged around the gully to provide a substantially flush arrangement of the gully relative to the pavement. In this way, walkers will not trip over the gullies edge, and vehicles will not experience a bump. Once arranged in the street or sidewalk, gullies are in principle intended to remain there.

However, during a lifetime of a gully, various reasons may cause the need or desire to replace a gully cover or grate. For example, extreme concentrated loads, may cause a bar of a grate-like cover to break or get bend, after which replacement may be required for safety reasons. This is however a rare situation and therefore conventional gullies are normally designed, sometimes also in view of protection against vandalism, with covers or grates that may only be removed in a destructive manner.

Nowadays, another far more frequent reason resulting in a desire to replace a gully cover or grate may be the change of the nature of the water in the sewer system that is in fluid connection with the respective gully. After all, the type of cover or grate is often related to the nature of the water, allowing experts to visually recognize if the sewer system is for example a conventional sewer system for transporting sewage water, or a sewer system intended for drainage of rainwater only. Therefore, there is a need to provide a gully cover assembly that allows the cover or grate to be replaced easily, in a non-destructive manner.

It is mentioned that, although cover is used throughout the remainder of this document, this wording explicitly also covers grates, which are interpreted as grate-like covers.

An objective of the present invention is to provide a gully cover assembly, that is improved relative to the prior art and wherein at least one of the above stated problems is obviated or alleviated.

Said objective is achieved with the gully cover assembly according to claim 1 of the present invention, comprising: - a frame, configured to be connected to or embedded in a gully pot; - a removable cover, configured to cover the gully pot on a top side thereof; - two protrusions arranged on opposite sides of the cover and defining a rotation axis around which the cover is rotatable between an opened position allowing access to the gulley pot and a closed position covering the gulley pot when said cover is arranged in said frame; - a guide slot configured to guide a first protrusion of the two protrusions to thereby allow the cover to be removed from the frame or placed in the frame without destructing the cover or any of the two protrusions, and without interference with a pavement surrounding the gully pot. The guide slot is in particular configured to guide the first protrusion of the two protrusions and thereby allow the cover to be removed from the frame or placed in the frame without destructing the cover or any of the two protrusions, and without interference with a pavement surrounding the gully pot.

The cover is a removable cover, and by using a guide slot that is configured to guide the first protrusion, the cover is provided with a freedom of movement that allows it to be easily and swiftly removed from the frame or placed in the frame. There is no need to remove any pavement, nor is it necessary to destruct the cover, for example by cutting or grinding through one of the two protrusions that define the rotation axis.

According to a preferred embodiment of the gully cover assembly, the guide slot is configured to guide a first protrusion of the two protrusions to thereby enable the cover to displace relative to the rotation axis and allow the cover to be removed from the frame or placed in the frame without destructing the cover or any of the two protrusions, and without interference with a pavement surrounding the gully pot. The displacement relative to the rotation axis provides the freedom of movement that allows the cover to be easily and swiftly removed from the frame or placed in the frame.

According to a further preferred embodiment of the gully cover assembly, the guide slot is configured to guide a first protrusion of the two protrusions to thereby enable the cover to pivot relative to the rotation axis and to tilt the cover to thereby allow the cover to be removed from the frame or placed in the frame without destructing the cover or any of the two protrusions, and without interference with a pavement surrounding the gully pot. If the displacement of the cover relative to the rotation axis comprises a pivoting of the cover relative to the rotation axis, it suffices that the gully cover assembly comprises only one guide slot, which simplifies manufacture and increases strength and durability.

According to an even preferred embodiment of the gully cover assembly, it further comprises a recess that is configured to receive a second protrusion of the two protrusions, wherein said second protrusion is arranged on the opposite side of the cover as the first protrusion, and wherein said recess is oversized relative to the second protrusion to allow the cover to tilt relative to the rotation axis.

According to a highly preferred embodiment of the gully cover assembly, the guide slot comprises a pocket that is arranged at an end of the guide slot, wherein said pocket is configured to receive and guide a first protrusion of the two protrusions, wherein the guide slot defines a passage having a smaller dimension than the pocket and the first protrusion is shaped and dimensioned to allow it to pass the passage defined by the guide slot only in a pre-determined orientation of the cover relative to the frame. Because the guide slot defines a passage having a smaller dimension than the pocket and the first protrusion is shaped and dimensioned to allow it to pass the passage defined by the guide slot only in a pre-determined orientation of the cover relative to the frame, the cover — albeit being easily removable — is prevented against unintentional removal thereof. Removal of the cover may be restricted to a pre-determined opened angle of the cover relative to the frame, thereby preventing the cover to be accidentally removed, either during overflooding or by persons not aware of how to operate such covers.

The invention is further related to a gully, comprising a gully pot that comprises a bottom and one or more than one side wall, defining a receptacle configured to receive a liquid, in particular water, and a gully cover assembly according to the invention.

Preferred embodiments are the subject of the dependent claims.

The various aspects and features described and shown in the specification can be applied, individually, wherever possible. These individual aspects, and in particular the aspects and features described in the attached dependent claims, may be an invention in its own right that is related to a different problem relative to the prior art.

In the following description preferred embodiments of the present invention are further elucidated with reference to the drawing, in which: Figure 1 is a perspective view of a gully comprising a gully cover assembly according to the invention, and being arranged in a street or side walk; Figure 2 is a perspective view of a gully cover assembly according to a first preferred embodiment of the invention; Figure 3 is an exploded perspective view of the gully cover assembly of Figure 2: Figure 4 1s a top perspective view in a first state of arranging a cover in a frame of the gully cover assembly; Figure 5 is a side view of the gully cover assembly in the first state shown in Figure 4; Figure 6 is a top perspective view in a second state of arranging a cover in a frame of the gully cover assembly; Figure 7 is a side view of the gully cover assembly in the second state shown in Figure 6; Figure 8 is a top perspective view in a third state of arranging a cover in a frame of the gully cover assembly; Figure 9 is a side view of the gully cover assembly in the third state shown in Figure 8: Figure 10 is a top perspective view in a fourth state of arranging a cover in a frame of the gully cover assembly;

Figure 11is a side view of the gully cover assembly in the fourth state shown in Figure 10; Figure 12 is a perspective view of a gully cover assembly according to a second preferred embodiment of the invention; and Figure 13 is a perspective view of a gully cover assembly according to a third preferred embodiment of the invention, in a locked state thereof; Figure 14 is a perspective view of the gully cover assembly of Figure 13 during unlocking thereof; Figures 15 and 16 are a perspective and side views respectively, of the gully cover assembly according to the third preferred embodiment in an opened state thereof; Figures 17 and 18 are a perspective and side views respectively, of the gully cover assembly according to the third preterred embodiment during tilting of the removable cover relative to the rotation axis for opening; and Figure 19 is a perspective view of the removable cover being removed from the frame.

The gully 1 in Figure 1 comprises a gully pot 2 and a gully cover assembly 3. The gully pot 2 comprises a bottom 4 and one or more than one side wall 5, defining a receptacle 6 configured to receive a liquid, in particular water. The shown gully pot 2 further comprises an outlet 7 that is arranged in a side wall 5 of the gully pot 2 and that is configured to be in fluid connection with a drain 8. The gully pot 2 may be made of concrete and at least one of a frame 9 and a cover 10 of the gully cover assembly 3 may be made out of cast iron or a plastic composite.

The gully cover assembly 3 is shown in more detail in Figure 2, and comprises the frame 9 that is configured to be connected to or embedded in the gully pot 2, and a removable cover 10 that is configured to cover the gully pot 2 on a top side 11 thereof. Two protrusions 12, 13 are arranged on opposite sides of the cover 10, and they define, when said cover 10 is arranged in said frame 9, a rotation axis R around which the cover 10 is rotatable between an opened position (Figures 8 and 9) allowing access to the gulley pot 2 and a closed position (Figures 10 and 11) covering the gulley pot 2. A guide slot 14 is configured to guide a first protrusion 12 of the two protrusions 12, 13 to thereby allow the cover 10 to be removed from the frame 9 or placed in the frame 9 without destructing the cover 10 or any of the two protrusions 12, 13, and without interference with a pavement 15 surrounding the gully pot 2.

It is mentioned here that only the outer periphery of cover 10 is shown in the Figures to allow the construction of the fully cover assembly 3 to be clearly visible. The skilled person will acknowledge that this cover 10 may vary from fully closed to a relatively open construction defined by a grating.

In the two embodiments shown in the Figures, the guide slot 14 is configured to guide a first protrusion 12 of the two protrusions 12, 13 to thereby enable the cover 10 to displace relative to the rotation axis R and allow the cover 10 to be removed from the frame 9 or placed in the frame 9 without destructing the cover 10 or any of the two protrusions 12, 13, and without 5 interference with a pavement 15 surrounding the gully pot 2.

According to a first preferred embodiment of the invention, the guide slot is 14 configured to guide a first protrusion 12 of the two protrusions 12, 13 to thereby enable the cover to pivot relative to the rotation axis R and to tilt the cover over a tilt angle B to thereby allow the cover 10 to be removed from the frame 9 or placed in the frame 9 without destructing the cover 10 10 or any of the two protrusions 12, 13, and without interference with a pavement 15 (Figure 1) surrounding the gully pot 2.

The gully cover assembly 3 may further comprise a recess 15 that is configured to receive a second protrusion 13 of the two protrusions 12, 13, wherein said second protrusion 13 is arranged on the opposite side of the cover 10 as the first protrusion 12, and wherein said recess 15 is oversized relative to the second protrusion 13 to allow the cover 10 to tilt over a tilt angle B relative to the rotation axis R (Figure 4). The skilled person will understand that, although both the protrusions 12, 13 are connected to the cover 1 in the shown embodiment, it is conceivable that the second protrusion 13 is connected to the frame 9. In that case, the recess 15 will be arranged in a side of the cover 10.

The guide slot 14 preferably comprises an L-shape having a short leg 16 and a long leg 17. In the first embodiment of Figures 1-11, the guide slot 14 is arranged in the frame 9 and the long leg 17 of the L-shaped guide slot 14 extends in a length direction of a side 18 of the frame 9. In this way, the first protrusion 12 may be introduced into the long leg 17 of the guide slot 14 when the cover 10 is tilted over a tilt angle [3 relative to the rotation axis R (Figure 4). Once protrusion 12 is inserted into the long leg 17 of the guide slot 14, the tilt angle B may be reduced by displacing the protrusion 12 towards the rotation axis R. In Figures 6 and 7, the protrusion 12 has been moved till the end of the long leg 17, where the long leg 17 is connected to the short leg 16 of the L-shaped guide slot 14.

The guide slot 14 is arranged in the frame 9 and the short leg 16 of the L-shaped guide slot 14 extends transverse to a length direction of the side 18 of the frame 9. The short leg 16 thus extends in a height direction in a use state of the gully cover assembly 3, i.e. when it is part of a gully 1 that is arranged in a street or sidewalk. Relative to the long leg 17 of the L-shaped guide slot 14, the short leg 16 preferably extends towards an underside 19 of the frame 9 that is configured to face the gully pot 2. In this way, the protrusion 12 will remain in the short leg 16 under the influence of gravity, unless it is actively moved upward by an external force.

As shown in Figure 3, and in greater detail in the detailed views of Figures 7 and 9, the guide slot 14 may comprise a pocket 20 that is arranged at the end 21 of the short leg 16 facing away from the long leg 17. This pocket 20 is configured to receive the protrusion 12 and is large enough to allow protrusion 12 to freely rotate in the pocket 20 and thereby allow the cover 10 to be rotated relative to the frame 9 over an opening angle a.

A vandal-proof construction is obtained if the short leg 16 defines a passage 22 (Figure 7) having a smaller dimension than the pocket 20 and if the first protrusion 12 is shaped and dimensioned to allow it to pass the passage 22 defined by the short leg 16 only in a pre- determined orientation of the cover 10 relative to the frame 9.

The pre-determined orientation in which the protrusion 12 may pass the passage 22 is preferably a partially opened position of the cover, requiring the cover 10 to be deliberately positioned at a specific opening angle o, thereby effectively preventing that the cover 10 may be removed unintended and accidentally. The pre-determined orientation preferably excludes a fully opened position of the cover. In order to prevent the cover 10 from accidentally falling back, it is designed to have a fully opened position with an opening angle a > 105°, and preferably of about 110°. Although it is not recommended, sometimes workers may carry a gully cover assembly 3 by lifting the whole assembly while holding the cover 10 in its fully opened position. By excluding this fully opened position from the pre-determined orientation wherein the first protrusion 12 may pass through the guide slot 14, it is prevented that the cover 10 may be accidentally removed if a worker were to exercise this not recommended way of carrying of the gully cover assembly 3.

Restricting protrusion 12 passaging along the guide slot 14 only in pre-determined orientations of the cover 10 relative to the frame 9 may be obtained if the first protrusion 12 that is configured to be guided in the guide slot 14 comprises a non-circular cross sectional shape that is configured to restrict passage of said first protrusion 12 along at least one of the long leg 17 and the short leg 16 of the L-shaped guide slot 14. Preferably, the non-circular cross sectional shape of the first protrusion 12 is configured to restrict passage of said first protrusion 12 along both the long leg 17 and the short leg 16 of the L-shaped guide slot 14.

A very reliable gully cover assembly 3 providing an increased level of protection against unintended removal of the removable cover 10 is obtained if the non-circular cross sectional shape of the first protrusion 12 1s configured to restrict passage of said first protrusion 12 along the long leg 17 and restrict passage of said first protrusion 12 along the short leg 16 in two distinct predetermined orientations of the cover 10 relative to the frame 9.

For example, passage of the first protrusion 12 along the long leg 17 may be restricted to a first predetermined orientation of the cover relative to the frame 9 wherein the cover 10 describes an opening angle a in the range of 20° - 65°, preferably in the range of 30° - 60°, relative to the frame. This first predetermined orientation is shown in Figures 4-7.

Additionally or alternatively, passage of the first protrusion 12 along the short leg 16 may be restricted to a second predetermined orientation of the cover 10 relative to the frame 9 wherein the cover 10 describes an opening angle o in the range of 70° - 105°, preferably in the range of 75° - 100°, relative to the frame. If the cover 10 is fully opened, it describes an opening angle a> 105° for example of 110° In this way a secure fully opened orientation of the cover 10 is guaranteed, wherein it is effectively prevented that the cover 10 may accidentally fall back. Because this fully opened position is outside the range of the second predetermined orientation, a secure gully cover assembly 3 is provided, wherein it is guaranteed that the cover 10 may not be moved along the short leg 16 of the guide slot 14 when the cover 10 is fully opened.

As can be best seen in the detailed side views in Figures 7 and 9, the first protrusion 12 of the first preferred embodiment comprises a cross section having a circular base shape 23 with a flat side 24, wherein said flat side 24 is configured to be guided along a side wall 25 of the guide slot 14.

Figure 12 shows a second and alternative embodiment of the invention. Similar reference numbers apply to the similar features. According to this second embodiment of the invention, the gully cover assembly 3 comprises: - a further guide slot 14’ configured to guide a second protrusion 13 of the two protrusions 12, 13 to thereby allow the cover 10 to be removed from the frame 9 or placed in the frame 9 without destructing the cover 10 or any of the two protrusions 12, 13, and without interference with a pavement 15 surrounding the gully pot 2; and - wherein the guide slot 14 and the further guide slot 14’ are arranged on opposite sides of the cover 10.

Please note that for this second embodiment, the first protrusion 12 and the second protrusion 13 are arranged on the frame 9. The further guide slot 14° also comprises an L-shape having a short leg 16’ and a long leg 17°, wherein the long leg 17 of the guide slot 14 and the long leg 17° of the further guide slot 14° each extend in a length direction in opposite outer sides of the cover 10, and wherein the short leg 16 of the guide slot 14 and the short leg 16° of the further guide slot 14” each extend, relative to the long leg 16 of the L-shaped guide 14, 14°, towards a side of the frame 10 that is configured to face away from the gully pot 2.

A third preferred embodiment of the gulley cover assembly 3 is shown in Figures 13-19, that show successive steps of opening said removable cover 10 by unlocking it (Figure 14), rotating the cover 10 around a rotation axis R thereof over an opening angle c (Figures 15 and 16), successively displacing said cover 10 relative to the rotation axis R by tilting said cover 10 aver a tilt angle B (Figures 17 and 18), and finally removing said removable cover 10 from the frame 9 (Figure 19). Again, similar reference numbers apply to the similar features as in the previously described embodiments.

Relative to the first preferred embodiment, the gulley cover assembly 3 of the third preferred embodiment is simplified in terms of manufacturing thereof, which is especially beneficial if at least the part that comprises the guide slot 14, i.e. the frame 9 in the shown embodiment, is to be cast from cast iron. After all, the guide slot 14 of the third preferred embodiment does not comprise an L-shape as in the first preferred embodiment, but now comprises a longitudinal slot 177’ (conform the long leg 17) extending in a length direction of a side of the frame 9 that comprises a pocket 20° at one end thereof. Said pocket 20° is configured to receive the protrusion 12 and allows said protrusion 12 to rotate over an opening angle a relative to a rotation axis R of said cover 10. This rotation axis R is again being defined by the protrusions 12, 13 that are arranged on opposite sides of the cover 10. Thus, contrary to the first preferred embodiment, the guide slot 14 lacks an L-shape having a short leg 16, which simplifies casting of the frame 9. The third and first preferred embodiments have in common that the pocket 20° is arranged at an end of the guide slot 14, and that the guide slot 14 defines a passage having a smaller dimension than the pocket 20° and the first protrusion 12 is shaped and dimensioned to allow it to pass the passage defined by the guide slot 14 only in a pre-determined orientation of the cover 10 relative to the frame 9.

The gulley cover assembly 3 of the third preferred embodiment is beneficial in terms of manufacturing. but the absence of the short leg 16 makes it a little bit easier to open. It is therefore proposed to apply a lock 26. This lock 26 comprises a locking recess 27 and a mating locking protrusion 28. The cover 10 comprises a recess 29 that allows a bending hinge 30 to be defined at a side of the cover 10 facing the rotation axis R. When an opening force F is exerted on the bar 31 of cover 10, for example using a (not shown) crowbar or any other type of lever tool, the bar 31 may displace around bending hinge 30. In this way, locking protrusion 28 is moved outward of locking recess 27, thereby unlocking lock 26 (Figure 14) and allowing the cover 10 to be opened by rotating it relative to rotation axis R over an opening angle a (Figures 15 and 16).

Similar to the first preferred embodiment, the first protrusion 12 that is configured to be guided in the guide slot 14 comprises a non-circular cross sectional shape (best seen in the detailed view of Figure 19) that is configured to restrict passage of said first protrusion 12 along at least a part of the guide slot 14 when the cover 10 is not in the pre-determined orientation of the cover 10 relative to the frame 9. In this way, displacing the cover 10 relative to the rotation axis R by tilting said cover 10 over a tilt angle fs (Figures 17 and 18) is only possible if the cover 10 is actively brought by a user in a specific range of the opening angle a that corresponds to the first protrusion 12 being in a position wherein it may pass through the guide slot 14. In this way, the cover 10 may be easily removed form the frame 9 in a non-destructive manner by a skilled user, who is aware of the need to bring the cover in the pre-determined opening angle 0, while providing security against unintended removal, or easy removal by vandals.

For (rearranging said removable cover 10, or an alternative cover 10, in said frame 19, the opposite procedure as shown in Figures 13-19 is to be followed.

Although they show preferred embodiments of the invention, the above described embodiments are intended only to illustrate the invention and not to limit in any way the scope of the invention. Accordingly, it should be understood that where features mentioned in the appended claims are followed by reference signs. such signs are included solely for the purpose of enhancing the intelligibility of the claims and are in no way limiting on the scope of the claims. Furthermore, it is particularly noted that the skilled person can combine technical measures of the different embodiments. The scope of protection is defined solely by the following claims.

Claims

Conclusions

A gully cover assembly, comprising: - a frame adapted to be connected to or embedded in a street gully; - a removable cover adapted to cover the street gully at a top thereof; - two projections arranged on opposite sides of the lid and defining an axis of rotation about which the lid is rotatable between an open position allowing access to the gully and a closed position covering the gully when the lid is in the frame applied; - a guide slot adapted to guide a first projection of the two projections and thus allow the cover to move relative to the rotation axis and the cover to allow the cover to be removed from the frame can be removed or installed in the frame without destroying the cover or one or both of the two protruding parts, and without interfering with any pavement surrounding the gully.

The gully lid assembly of claim 1, wherein the guide slot is arranged to guide a first projection of the two projections and thus allow the lid to pivot relative to the axis of rotation and to tilt the lid to to allow the lid to be removed from the frame or placed in the frame without destroying the lid or one or both of the two protruding parts, and without interfering with a pavement surrounding the gully.

The gully lid assembly of claim 2, including a recess adapted to receive a second projection of the two projections, the second projection being arranged on an opposite side of the lid as the side where the first projection and wherein the recess is oversized with respect to the second projection to allow the lid to tilt relative to the axis of rotation.

A gully lid assembly according to one or more of the preceding claims, wherein the guide slot extends in a longitudinal direction from one side of the frame or from one side of the lid.

The gully lid assembly of claim 4, wherein the guide slot comprises an L-shape having a short leg and a long leg.

A gully lid assembly according to claims 4 and 5, wherein the guide slot is arranged in the frame and the long leg of the L-shaped guide slot extends in the longitudinal direction of the side of the frame.

The gully lid assembly of claim 6, wherein the short leg of the L-shaped guide slot extends transverse to a longitudinal direction of the side of the frame.

The gully lid assembly of claim 7, wherein the short leg extends relative to the long leg of the L-shaped guide slot to an underside of the frame adapted to face the street gully.

The gully lid assembly according to one or more of the preceding claims, wherein the guide slot comprises a receiving recess adapted to receive the first projecting part.

A gully cover assembly according to claim 9, wherein: - the receiving recess is arranged at one end of the guide slot; and - the guide slot defines a passage having a smaller dimension than the receiving recess and the first projection is shaped and sized to fit only in a predetermined orientation of the lid relative to the frame through the passage defined by the guide slot .

The gully lid assembly of claim 10 when dependent on at least claim 5, wherein: - the receiving recess is arranged at an end of the short leg facing away from the long leg; and - the short leg defines a passage which has a smaller dimension than the receiving recess and the first projection is shaped and dimensioned so that it is only in a predetermined orientation of the cover relative to the frame through the passage defined by the guide slot suits.

The gully lid assembly of claim 10 or 11, wherein the predetermined orientation is a partially open position of the lid.

The gully lid assembly of any one of claims 10-12, wherein the predetermined orientation precludes a fully open position of the lid.

The gully lid assembly of any one of claims 10-13, wherein the first projection adapted to be guided in the guide slot comprises a non-circular cross-sectional shape adapted to allow passage of the first projection along at least a portion of the guide slot when the cover is not in the predetermined orientation of the cover relative to the frame.

The gully lid assembly of claim 14 when dependent on at least claim 5, wherein the first projection adapted to be guided in the guide slot and comprising the non-circular cross-sectional shape is adapted to allow passage of the first projection along at least at least one of the long leg and the short leg of the L-shaped guide slot.

The gully lid assembly of claim 15, wherein the non-circular cross-sectional shape of the first projection is adapted to restrict passage of the first projection along both the long leg and the short leg of the L-shaped guide slot.

The gully lid assembly of claim 16, wherein the non-circular cross-sectional shape of the first projection is adapted to allow passage of the first projection along the long leg and for passage of the first projection along the short leg in two different predetermined ways. orientations of the cover relative to the frame.

The gully lid assembly of any one of claims 15 to 17, wherein passage of the first projection along the long leg is limited to a first predetermined orientation of the lid relative to the frame, the lid having a opening angle (a) in the range of 20° - 65°, preferably in the range of 30° - 60°, relative to the frame.

The gully lid assembly of any one of claims 15 to 18, wherein passage of the first projection along the short path is limited to a second predetermined orientation of the lid relative to the frame, wherein the lid has a opening angle (a) in the range of 70° - 105°, preferably in the range of 75° - 100°, relative to the frame.

A gully lid assembly according to one or more of the preceding claims, wherein the first projecting part comprises a cross-section of a circular basic shape with a flat side, the flat side being adapted to be guided along a side wall of the guide slot.

The gully lid assembly according to one or more of the claims 1,4 and 5, comprising: - a further guide slot arranged to guide a second projecting part of the two projecting parts so as to allow the lid of the frame can be removed or placed in the frame without destroying the cover or one or both of the two protruding parts, and without interfering with a pavement surrounding the gully; and - wherein the guide slot and the further guide slot are arranged on opposite sides of the cover.

The gully lid assembly of claim 21 when dependent on claim 5, wherein: - the further guide slot also comprises an L-shape having a short leg and a long leg; - the long leg of the guide slot and the long leg of the further guide slot each extend in a longitudinal direction in opposite outer sides of the cover; and - the short leg of the guide slot and the short leg of the further guide slot each extend, relative to the long leg of the L-shaped guide slot, to a side of the frame adapted to face away from the gully .

23. Street gully assembly, comprising: - a street gully comprising a bottom and one or more than one side wall defining a receptacle adapted to receive a liquid, in particular water; and

- a gully cover assembly according to one or more of the preceding claims.

24. The gully assembly of claim 23, wherein the gully further comprises a 53 outlet disposed in a side wall of the gully and adapted to be in fluid communication with a drain.

25. Street gully assembly according to claim 24, wherein the street gully is made of concrete

A street gully assembly according to claim 24 or 25, wherein at least one of the frame and the lid of the gully cover assembly is made of cast iron or a plastic composite.