DE8907079U1 - Spirit level - Google Patents

Description

PATENT ATTORNEYS I !·,;,: ;;··. . CONRAD KÖCHLING.. ^: '.'>'' ^: .. ^: .·'>*'-'

DlPLlNG. CONRAD-JOACHIM KÖCHLING &Agr;™· = Hans-Ulrich Otto

At the Vaerstbrücke Fleyer Strasse 135,5800 Hagen

Call (02331) &bgr; 1184 + 8SO33

rategnmriieir^twitkochNrigrtoBan D-4750 Unna-Königsbor &Pgr;

Accounts: Comment·!* AG, Hagan

(Bank code 450 40042) 351S09S

Sparkasse Hagen 100012043 Postachedc Dortmund 5969-460

VNR- 11 58 51 Serial No. 9765/89 from the June 7, 1989

CJX/Li.

Water scale

The invention relates to a spirit level, consisting of a cuboid-shaped body with inserted spirit levels

Such spirit levels made of wood, plastic or metal are known in the state of the art. Using such spirit levels, the exact angular alignment or the exact vertical alignment of wall parts or construction elements can be recorded and checked within a limited scope.

To check large areas, such as building surfaces, paved areas or the like, leveling devices have been common, but these are relatively expensive and require two-man operation. Based on this state of the art, the invention is based on the task of developing a spirit level

Otton 9765/89

: create a framework to ensure the proper execution

H direction and dimension of large areas enables

" light is.

^To solve this problem, the invention proposes

g| that a laser beam generator is inserted into the body

f ^is » whose ray path is parallel to the longitudinal

extension of the body, and that a radiation exit opening is formed on a narrow front surface of the body.

The beam of the laser beam generator creates an extended arm of the spirit level, so that an arm of almost any length is formed in the longitudinal axis direction. This makes it possible to scan or measure large areas, whereby the spirit level equipped in this way performs the function of the usual spirit level as well as also partially functions as a leveling device

or a solder.

Otton 9765/89

All measurements required for the building sector or in other construction areas can be carried out precisely by one person. For example, to measure flat surfaces, it is only necessary to record a fixed point on a flush wall and to align the laser beam of the spirit level to this fixed point. This means that the entire surface can be spanned and measured over a very large wet area.

It is preferable ^{for the} radiation ^outlet opening to be covered with a translucent plate.

It is particularly preferred that the plate is formed by a lens or a set of lenses.

Using an appropriate set of lenses, the laser beam can be concentrated and brought into one point.

iit · · ff

Otton 9765/89

It is advantageous if the lens or lens set is adjustable relative to the frontal surface of the body.

Preferably, it is further provided that the laser beam generator is connected to a power source built into the body.

This makes it possible to operate the spirit level according to the invention independently of the power supply. Alternatives for the power supply are shown in claims 6 and 7.

Preferably, it is further provided that a switch is arranged between the power source and the laser beam generator, which switch is held so as to pass through a body wall and has a handle that can be operated from the outside.

The switch can be designed as a manual on-off switch. However, a time-dependent on-off switch can also be used, which switches on after a pre-determined

» · t · If«

Otton 9765/89

switches the laser beam generator off from the power source after a set time. This prevents unwanted, excessive power consumption.

Furthermore, it is preferably provided that the laser beam generator is held in an auxiliary frame which can be aligned in both transverse directions in a recess in the body by means of adjusting screws which pass through threaded holes.

This allows the user to align the laser beam generator precisely to the surfaces of the spirit level.

A preferred further development is seen in that next to the beam exit point of the body a receiving part is held, by means of which the reflected beam can be received, whereby the receiving part is connected to an electronic evaluation logic held in the body, possibly together with a digital display device.

• r * et» ·«·»

Otton 9765/89

This design makes it possible to use the spirit level according to the invention simultaneously as a distance meter, in that a reflected beam is received and evaluated in the evaluation logic, whereby this evaluation can be converted into a distance measurement and displayed on a display.

A preferred further development consists in that the end part of the body applied to the beam exit can be connected to one leg of a knee-joint-like holder and the body of another spirit level can be connected with its end part facing away from the beam exit to the second leg of the holder, wherein the legs can be pivoted about an axis located in particular at the intersection point of the longitudinal axes .

This design makes it possible to perform a three-dimensional angle measurement or alignment measurement

Otton 9765/89

to be carried out, whereby this work is also carried out by a |

can be carried out precisely by a single person.

Embodiments of the invention are described in J

•Jj drawing shown and described in more detail below &

wrote. "

It shows:

Fig. 1 shows a spirit level according to the invention in elevation; ; Fig. 2 a variant also in view; % Fig. 3 another variant in view. The spirit level according to the invention consists of a f?

cuboid body 1 with inserted spirit levels 2,

as this corresponds to the state of the art. In the

Body 1 is fitted with a laser beam generator 3,

whose beam path is parallel to the central longitudinal axis %

IrJ f:'l

of the body 1, the beam exit opening being formed on one narrow front surface 4 of the body 1. The beam exit j

Otto97 55/89

opening can be covered with a transparent plate (for example glass). However, it can also be formed by a lens or a set of lenses, whereby the lens or the set of lenses 5 can be axially adjusted relative to the front surface 4 of the body 1. For this purpose, the set of lenses has an adjusting ring 6 that can be operated from the outside. In this way, the beam of the laser beam generator 3 can be bundled. In the exemplary embodiment, the laser beam generator 3 is electrically connected to a power source 7 built into the body 1, whereby the power source in the exemplary embodiment is formed by a rechargeable battery. To charge the battery 7, a conventional power supply unit is required, which can be plugged in via a connector plug 13, which in turn is electrically connected to the battery. In addition, a switch 8 is arranged between the power source 7 and the laser beam generator 3, by means of which the circuit can be closed or opened.

• · · &bgr;

Otton 9765/89

The switch 8 is designed as a pressure switch in the embodiment. In the embodiment according to Figures 2 and 3, the band part of the body X facing away from the beam exit is connected to one leg 9 of a knee-joint-like holder, while another spirit level with its body 1 is connected in the same position to the second leg 10 of the holder. Both legs 9, 10 can be pivoted about an axis 11 located at the intersection point of the longitudinal center axes of the bodies 1. In addition, a cooperating scale 12 can be provided on the legs 9, 10, so that exact angle settings of the legs and thus of the bodies 1 to one another are possible. In order to achieve a particularly precise adaptation of the legs 9, 10 to the shape of the bodies 1, the legs can have corresponding pins which can be gripped by the correspondingly hollow body, whereby the target position

Otton 9765/89

- 10 -

can be fixed by an additional catch that can be released from the outside. It is also conceivable that the legs 9,10 are designed as cabbage legs and the bodies 1 are inserted into these hollow legs. Here too, the position can be secured by a spring catch that can be operated from the outside.

The invention is not limited to the embodiment, but is variable in many ways within the scope of the disclosure.

All new, in the description and/or Drawing revealed individual and combination features

are all considered essential to the invention.

Claims (11)

Otto 9765/89 - 11 Protection claims: 1. Spirit level, consisting of a cuboid body with inserted vials, characterized in that a laser beam generator (3) is inserted into the body (1), the beam path of which runs parallel to the longitudinal extension of the body (1), and that a beam exit opening is formed on a narrow front surface (4) of the body (1). 2. Spirit level according to claim 1, characterized in that the beam exit opening is covered with a translucent plate. 3. Spirit level according to claim 1 or 2, characterized in that the plate is formed by a lens or a set of lenses (5). Otton 9765/89 - 12 - 4. Spirit level according to one of claims 1 to 3, characterized in that the lens or the lens set (5) is adjustable relative to the front surface of the body. 5. Spirit level according to one of claims 1 to 4, characterized in that the laser beam generator (3) is connected to a power source (7) built into the body (1). 6. Spirit level according to claim 5, characterized in that the power source (7) consists of batteries. 7. Spirit level according to claim 5, characterized in that the power source (7) consists of a rechargeable battery. 8. Spirit level according to one of claims 1 to 7, characterized in that between the power source Otton 9765/89 - 13 - (7) and laser beam generator (3) is a switch (8) which is held through a body wall and has a handle which can be operated from the outside. 9. Spirit level according to one of claims 1 to 8, characterized in that the laser beam generator (3) is held in an auxiliary frame which can be aligned in both transverse directions in a recess of the body (1) by means of adjusting screws which pass through threaded holes therein. 10. Spirit level according to one of claims 1 to 9, characterized in that a receiving part is held next to the beam exit point of the body (1), by means of which the reflected beam can be received, the receiving part being connected to an electronic evaluation logic held in the body (1), if necessary ■«· Otton 9765/89 - 14 - with a digital display device . 11. Spirit level according to one of claims 1 to 10, characterized in that the end part of the body (1) facing away from the beam exit can be connected to one leg (9) of a knee-joint-like holder and the body (1) of a further spirit level can be connected with its end part facing away from the beam exit to the second leg (10) of the holder, the legs (9, 10) being pivotable about an axis (11) located in particular at the intersection point of the longitudinal central axes,