EP0902677B1 - Dentist chair including device for adjusting the forcibly coupled seat and back - Google Patents
Dentist chair including device for adjusting the forcibly coupled seat and back Download PDFInfo
- Publication number
- EP0902677B1 EP0902677B1 EP96945990A EP96945990A EP0902677B1 EP 0902677 B1 EP0902677 B1 EP 0902677B1 EP 96945990 A EP96945990 A EP 96945990A EP 96945990 A EP96945990 A EP 96945990A EP 0902677 B1 EP0902677 B1 EP 0902677B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seat
- backrest
- force
- roller
- transmission element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 238000004904 shortening Methods 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 description 7
- 210000002414 leg Anatomy 0.000 description 5
- 230000003213 activating effect Effects 0.000 description 1
- 210000001217 buttock Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G15/00—Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
- A61G15/02—Chairs with means to adjust position of patient; Controls therefor
Definitions
- the invention relates to a dental patient chair with a device for positively coupled Adjustment of the seat and backrest of the Chairs according to the preamble of the claim 1.
- a patient chair with such a device is for example from European patent specification 0 373 245 known. Although the device described there allows to bring the seat into a relatively low end position, take the to tilt the backrest and tilt the Seat relative to the upper part provided relatively much Space.
- Another patient chair is known from DE-A1 3 018 684, in which the seat cover is divided into a buttocks and thighs load-bearing seat part and one opposite this pivotable lower leg support. So that the lower leg support trained short and with deeply lowered Seat part can be swung down to the vertical can, it contains a telescopic in the longitudinal direction extendable and retractable support.
- the support part is using a pulley-like arrangement, running over three rollers Rope adjusted along the lower leg support if this with the help of a between the seat part and lower leg support attacking actuator is adjusted.
- the invention specified in claim 1 is based on the object a device of the type mentioned create a lower, flatter construction of the seat overall, especially the seat support, allowed.
- the forced coupling of the seat and backrest according to the invention is advantageously by means of a roller chain and three Sprockets reached, one sprocket being the “loose The role of "reverse pulley” and the two other sprockets only to redirect the chain force serve.
- the entire arrangement is advantageously made so that the backrest is tilted about twice as fast as the seat is tilted. This is achieved in that the pulley-like arrangement the adjustment paths and thus the adjustment speeds between the attachment points the power transmission member, e.g. the roller chain, at the seat end of the backrest on the one hand and on Upper part, on the other hand, in a certain relationship to each other to be brought. By choosing the distances, this can movement ratio mentioned above can be achieved.
- FIG. 1 shows a basic representation of a dental Side view of the patient chair, in one Position that corresponds to a lying position of a patient and standing Position of a practitioner.
- the chair top is in the highest position here.
- Figure 2 shows the upper part of the chair with seat and backrest with the backrest raised. The mechanics for the lower part of the chair is not shown here.
- FIG. 3 shows an enlarged detail X from FIG. 1 Presentation.
- the patient chair shown in Figure 1 contains a base part 1 with a scissor-like height adjustment device 2.
- a scissor-like height adjustment device 245 After this in the aforementioned EP-B1-0 373 245 is described in more detail, this needs in detail not to be explained in more detail. It should only be noted here that one of the two upper support arms 3, 4 (3) is articulated on an upper part designated 5, while the other (4) can be moved in a slide guide 6 in the direction of the arrow is led. The same applies to the two lower ones Poor ends.
- a seat support 8 is articulated by means of a tilt bearing 7. Fixed to the seat support 8 is the one designated 9 Seat and leg rest.
- the seat support 8 also includes one Crooked guide 10, in which the front, lower end part 11th the backrest 12, in technical terms often with "sword” designated, is guided.
- the adjusting device 13 is on the one hand Upper part and on the other hand articulated and effected on the seat support 8 a tilt of the seat about the tilt axis 7.
- the adjusting device 13, as shown, can be an electromotive Be spindle drive; it is conceivable and within the Invention is, alternatively, a hydraulic or pneumatic drive.
- the device between the upper part 5 and the end part 11 provided a positively coupled adjustment of the seat and Effect leg rest 9 and the backrest 12 of the chair.
- the device consists of a pliable, flexible Power transmission member 15 and three guide rollers 16 to 18, that act like a pulley.
- the power transmission link 15 is with a fixed point 19 on the upper part 5 and attached to the backrest sword 11 with a fixed point 20.
- the two rollers 17 and 18 serve as guide rollers and are stationary on the upper part 5 while the roller 16 "Loose roll" represents the pulley system and at the bottom End of a fork-like extension 8a of the seat support 8 is stored.
- FIG. 2 illustrated sitting position explained.
- the backrest In the figure 2 position shown, the backrest is in a erect position.
- Seat and leg rest are in a typical sitting position, in which the seat slightly tilted at the front and the leg rest directed obliquely downwards are. In this position is between the attachment point 20 and the guide roller 18 a distance a exists.
- the end of the power transmission link is between the attachment point 19 and the loose roller 16 a distance b is present.
- the backrest should be about twice as much can be tilted quickly as the seat and leg rest are tilted becomes.
- the adjustment movement is initiated by activating the Adjustment device 13.
- the motor drives the spindle drive over a Spindle up the mother tube.
- the seat support 8 tilted about the tilt axis 7.
- the roller 16 moves relatively to the top 5 up; the power transmission link guided around this role 15 is due to the weight of the backrest 12 and the sword 11 tightened.
- the attachment point 20 moves due to the pulley-like constellation about twice the speed of the upward movement the roller 16 and leaves the sword 11 out through the curved guide 10, slide into the seat support 8 until the lying position shown in Figure 1 is reached.
- a force transmission member 15 can be particularly advantageous a roller chain are used; the three roles 16 to 18 are then designed as sprockets. Alternatively, you can also a timing belt with corresponding pulleys Flat or V-belts or a cable with corresponding trained roles are used.
- a special embodiment of the invention provides that Provide parts 15 to 18 twice, for example two Roller chains and six sprockets. Are advantageous the sprockets then in pairs on a common axis arranged. The arrangement is such that the two side by side and independent of each other running chains that run a chain slightly longer is than the other. This will only make one of the two chains loaded, which runs a little longer than the safety chain without Load with. Should the load chain for any reason the second safety chain comes into force. At the same time becomes a safety chain switch due to the load chain break 22 activated, with which the electronics of the chair, in particular the adjustment drive 13 is switched off.
- FIG 3 shows the safety switch as a detail in enlarged view.
- the power transmission link 15, for example the roller chain taut curious; excited. It is over a sliding block 23 on the top 5 is tiltable, guided.
- the backrest 12 opens an object, the sword 11 is easily removed from the Seat support 8 pulled; the chain would no longer be taut his.
- the sliding block lying on the chain becomes tilted and thus activated the chain switch 22, which in turn switches off the chair electronics.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Description
Die Erfindung bezieht sich auf einen zahnärztlichen Patientenstuhl mit einer Vorrichtung zur zwangsgekoppelten Verstellung von Sitz und Rückenlehne des Stuhles gemäß dem Oberbegriff des Anspruches 1.The invention relates to a dental patient chair with a device for positively coupled Adjustment of the seat and backrest of the Chairs according to the preamble of the claim 1.
Ein Patientenstuhl mit einer derartigen Vorrichtung ist beispielsweise aus der europäischen Patentschrift 0 373 245 bekannt. Obgleich die dort beschriebene Vorrichtung es erlaubt, den Sitz in eine relativ tiefe Endlage zu bringen, nehmen die zur Neigung der Rückenlehne und zur Kippung des Sitzes relativ zum Oberteil vorgesehenen Teile relativ viel Raum ein.A patient chair with such a device is for example from European patent specification 0 373 245 known. Although the device described there allows to bring the seat into a relatively low end position, take the to tilt the backrest and tilt the Seat relative to the upper part provided relatively much Space.
Aus DE-A1 3 018 684 ist ein anderer Patientenstuhl bekannt, bei dem die Sitzauflage unterteilt ist in ein Gesäß und Oberschenkel tragendes Sitzteil und eine gegenüber diesem schwenkbar angeordnete Unterschenkelabstützung. Damit die Unterschenkelabstützung kurz ausgebildet und bei tief abgesenktem Sitzteil bis in die Senkrechte heruntergeschwenkt werden kann, enthält sie ein in deren Längsrichtung teleskopisch aus- und einziehbares Stützteil. Das Stützteil wird mit Hilfe eines flaschenzugartig angeordneten, über drei Rollen laufenden Seiles längs der Unterschenkelabstützung verstellt, wenn diese mit Hilfe eines zwischen Sitzteil und Unterschenkelabstützung angreifenden Stellantriebes verstellt wird.Another patient chair is known from DE-A1 3 018 684, in which the seat cover is divided into a buttocks and thighs load-bearing seat part and one opposite this pivotable lower leg support. So that the lower leg support trained short and with deeply lowered Seat part can be swung down to the vertical can, it contains a telescopic in the longitudinal direction extendable and retractable support. The support part is using a pulley-like arrangement, running over three rollers Rope adjusted along the lower leg support if this with the help of a between the seat part and lower leg support attacking actuator is adjusted.
Der im Anspruch 1 angegebenen Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Gattung zu schaffen, die einen niedrigeren, flacheren Aufbau des Sitzes insgesamt, insbesondere des Sitzträgers, erlaubt. The invention specified in claim 1 is based on the object a device of the type mentioned create a lower, flatter construction of the seat overall, especially the seat support, allowed.
Die erfindungsgemäße Zwangskoppelung von Sitz und Rückenlehne wird vorteilhafterweise mittels einer Rollenkette und drei Kettenrädern erreicht, wobei das eine Kettenrad die "lose Rolle" des "umgekehrten Flaschenzuges" darstellt und die beiden anderen Kettenräder lediglich zur Umlenkung der Kettenkraft dienen.The forced coupling of the seat and backrest according to the invention is advantageously by means of a roller chain and three Sprockets reached, one sprocket being the "loose The role of "reverse pulley" and the two other sprockets only to redirect the chain force serve.
Die gesamte Anordnung ist vorteilhafterweise so getroffen, daß die Rückenlehne etwa doppelt so schnell geneigt wird wie der Sitz gekippt wird. Erreicht wird dies dadurch, daß infolge der flaschenzugartigen Anordnung die Verstellwege und damit die Verstellgeschwindigkeiten zwischen den Befestigungspunkten des Kraftübertragungsgliedes, z.B. der Rollenkette, am sitzseitigen Ende der Rückenlehne einerseits und am Oberteil andererseits, in einem bestimmten Verhältnis zueinander gebracht werden. Durch die Wahl der Abstände kann das oben erwähnte Bewegungsverhältnis erreicht werden.The entire arrangement is advantageously made so that the backrest is tilted about twice as fast as the seat is tilted. This is achieved in that the pulley-like arrangement the adjustment paths and thus the adjustment speeds between the attachment points the power transmission member, e.g. the roller chain, at the seat end of the backrest on the one hand and on Upper part, on the other hand, in a certain relationship to each other to be brought. By choosing the distances, this can movement ratio mentioned above can be achieved.
Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher beschrieben.An embodiment of the invention is described below the drawing described in more detail.
Die Figur 1 zeigt in einer Prinzipdarstellung einen zahnärztlichen Patientenstuhl in Seitenansicht, und zwar in einer Stellung, die einer Liegeposition eines Patienten und stehenden Position eines Behandlers entspricht. Das Stuhloberteil befindet sich hier in der höchsten Stellung.1 shows a basic representation of a dental Side view of the patient chair, in one Position that corresponds to a lying position of a patient and standing Position of a practitioner. The chair top is in the highest position here.
Die Figur 2 zeigt das Stuhloberteil mit Sitz- und Rückenlehne bei aufgerichteter Rückenlehne. Die Mechanik für das Stuhlunterteil ist hier nicht eingezeichnet.Figure 2 shows the upper part of the chair with seat and backrest with the backrest raised. The mechanics for the lower part of the chair is not shown here.
Die Figur 3 zeigt eine Einzelheit X aus Figur 1 in vergrößerter Darstellung.FIG. 3 shows an enlarged detail X from FIG. 1 Presentation.
Der in Figur 1 dargestellte Patientenstuhl enthält ein Basisteil
1 mit einer scherenartig gestalteten Höhenverstellvorrichtung
2. Nachdem diese in der eingangs genannten EP-B1-0
373 245 näher beschrieben ist, braucht diese im Detail
nicht näher erläutert zu werden. Es sei hier lediglich angemerkt,
daß von den beiden oberen Tragarmen 3, 4 der eine (3)
an einem mit 5 bezeichneten Oberteil angelenkt ist, während
der andere (4) in einer Gleitführung 6 in Pfeilrichtung verschiebbar
geführt ist. Gleiches gilt auch für die beiden unteren
Armenden.The patient chair shown in Figure 1 contains a base part
1 with a scissor-like
An dem nach Art eines offenen Kastens ausgebildeten Oberteils
5 ist mittels Kipplager 7 ein Sitzträger 8 kippbar angelenkt.
Mit dem Sitzträger 8 fest verbunden ist die mit 9 bezeichnete
Sitz- und Beinauflage. Der Sitzträger 8 enthält ferner eine
Krummführung 10, in der das stirnseitige, untere Endteil 11
der Rückenlehne 12, in der Fachsprache häufig mit "Schwert"
bezeichnet, geführt ist.On the upper part, which is designed like an
Dem Kippunkt 7 entfernt liegend befindet sich eine Verstellvorrichtung
13. Die Verstellvorrichtung 13 ist einerseits am
Oberteil und andererseits am Sitzträger 8 angelenkt und bewirkt
eine Kippung des Sitzes um die Kippachse 7. Die Verstellvorrichtung
13 kann, wie gezeigt, ein elektromotorischer
Spindelantrieb sein; denkbar ist es und im Rahmen der
Erfindung liegt es, alternativ einen hydraulischen oder
pneumatischen Antrieb vorzusehen.An adjustment device is located at the tipping point 7
13. The adjusting
Zwischen Oberteil 5 und dem Endteil 11 ist eine Vorrichtung
vorgesehen, die eine zwangsgekoppelte Verstellung der Sitzund
Beinauflage 9 und der Rückenlehne 12 des Stuhles bewirken.
Die Vorrichtung besteht aus einem biegsamen, flexiblen
Kraftübertragungsglied 15 und drei Führungsrollen 16 bis 18,
die nach Art eines Flaschenzuges wirken. Das Kraftübertragungsglied
15 ist mit einem Festpunkt 19 am Oberteil 5 und
mit einem Festpunkt 20 am Rückenlehnenschwert 11 befestigt.
Die beiden Rollen 17 und 18 dienen als Führungsrollen und
sind ortsfest am Oberteil 5 gelagert während die Rolle 16 die
"lose Rolle" des Flaschenzuges darstellt und hierzu am unteren
Ende eines gabelartigen Fortsatzes 8a des Sitzträgers 8
gelagert ist.There is a device between the
Die Funktionsweise wird nun, ausgehend von der in Figur 2
dargestellten sitzenden Position erläutert. Bei der in Figur
2 dargestellten Position befindet sich die Rückenlehne in einer
aufgerichteten Stellung. Sitz und Beinauflage befinden
sich in typischer Sitzstellung, bei der der Sitz leicht nach
vorne gekippt und die Beinauflage schräg nach unten gerichtet
sind. In dieser Position ist zwischen dem Befestigungspunkt
20 und der Führungsrolle 18 ein Abstand a vorhanden. Am anderen
Ende des Kraftübertragungsgliedes ist zwischen dem Befestigungspunkt
19 und der losen Rolle 16 ein Abstand b vorhanden.The mode of operation is now based on that in FIG. 2
illustrated sitting position explained. In the figure
2 position shown, the backrest is in a
erect position. Seat and leg rest are
in a typical sitting position, in which the seat slightly
tilted at the front and the leg rest directed obliquely downwards
are. In this position is between the
Wenn nun der Behandler den Patienten in eine liegende Stellung fahren möchte, so ist anzustreben, daß dabei die Rückenlehne rascher geneigt als die Sitz- und Beinauflage gekippt wird. Vorteilhafterweise soll die Rückenlehne etwa doppelt so schnell geneigt werden, wie die Sitz- und Beinauflage gekippt wird.If the practitioner now places the patient in a lying position wants to drive, so it should be aimed at doing the backrest more quickly tilted than the seat and legrest tilted becomes. Advantageously, the backrest should be about twice as much can be tilted quickly as the seat and leg rest are tilted becomes.
Die Verstellbewegung wird eingeleitet durch Aktivieren der
Verstelleinrichtung 13. Im Falle des hier gezeigten elektromotorischen
Spindelantriebes schiebt der Motor über eine
Spindel das Mutterrohr nach oben. Dabei wird der Sitzträger 8
um die Kippachse 7 gekippt. Die Rolle 16 bewegt sich relativ
zum Oberteil 5 nach oben; das um diese Rolle geführte Kraftübertragungsglied
15 wird durch das Eigengewicht der Rückenlehne
12 und des Schwertes 11 gestrafft. Der Befestigungspunkt
20 bewegt sich infolge der flaschenzugartigen Konstellation
etwa mit der doppelten Geschwindigkeit wie die Aufwärtsbewegung
der Rolle 16 und läßt das Schwert 11, geführt
durch die Krummführung 10, in den Sitzträger 8 gleiten, bis
die in Figur 1 gezeigte Liegeposition erreicht ist. The adjustment movement is initiated by activating the
Als Kraftübertragungsglied 15 kann mit besonderem Vorteil
eine Rollenkette zur Anwendung gelangen; die drei Rollen 16
bis 18 sind dann als Kettenräder ausgebildet. Alternativ kann
auch ein Zahnriemen mit entsprechenden Zahnscheiben, ein
Flach- oder Keilriemen oder auch ein Seilzug mit entsprechend
ausgebildeten Rollen eingesetzt werden.As a
Eine besondere Ausgestaltung der Erfindung sieht vor, die
Teile 15 bis 18 doppelt vorzusehen, also beispielsweise zwei
Rollenketten und sechs Kettenräder. Vorteilhafterweise sind
die Kettenräder dann paarweise auf einer gemeinsamen Achse
angeordnet. Die Anordnung ist dabei so getroffen, daß von den
beiden nebeneinander angeordneten und unabhängig voneinander
laufenden Ketten die eine Kette geringfügig länger ausgeführt
ist als die andere. Dadurch wird nur eine der beiden Ketten
belastet, die etwas längere läuft als Sicherheitskette ohne
Belastung mit. Sollte die Lastkette aus irgendwelchen Gründen
reißen, tritt die zweite Sicherheitskette in Kraft. Gleichzeitig
wird durch den Lastkettenbruch ein Sicherheitskettenschalter
22 aktiviert, mit dem die Elektronik des Stuhles,
insbesondere der Verstellantrieb 13, abgeschaltet wird.A special embodiment of the invention provides that
Provide
Die Figur 3 zeigt den Sicherheitsschalter als Einzelheit in
vergrößerter Darstellung. Im Normalfall ist das Kraftübertragungsglied
15, also beispielsweise die Rollenkette, straff
gespannt. Sie wird über einen Gleitstein 23, der am Oberteil
5 kippbar gelagert ist, geführt. Fährt die Rückenlehne 12 auf
einen Gegenstand auf, wird das Schwert 11 leicht aus dem
Sitzträger 8 gezogen; die Kette würde nicht mehr straff gespannt
sein. Der auf der Kette aufliegende Gleitstein wird
gekippt und aktiviert so den Kettenschalter 22, der wiederum
die Stuhlelektronik abschaltet.Figure 3 shows the safety switch as a detail in
enlarged view. In the normal case, the
Claims (5)
- Dentist's chair having a means for the positively coupled adjustment of the seat and backrest of the chair, in which the seat-carrying element (8) is articulated on a top part (5) so as to be tiltable around an axis (7) in the vicinity of the backrest, such that the seat-carrying element (8) with the seat and leg rest (9) is tilted rearwards around the tilting axis (7) when the backrest (12) is inclined and, conversely, is tilted forwards when the backrest is put into an upright position, characterized in that the seat end (11) of the backrest is guided in a curved guide (10) of the seat-carrying element (8), and in that and a flexible, pliable force-transmission element (15) is provided which is fastened, by one end, on the top part (5) at a fastening point (19) and, by its other end, on the seat end (11) of the backrest (12) at a fastening point (20) and which is guided in a manner of a block and tackle over three rollers (16, 17, 18), of which the first roller (16) is mounted on an extension (8a) of the seat-carrying element (8) such that one fastening point (19) of the force-transmission element (15) forms a first variable distance (b) with the roller (16), the second roller (18), which is mounted at the backrest end of the top part (5), forms a further variable distance (a) with the further fastening point (20) of the force-transmission element (15) on the end part (11) of the backrest (12), and the third roller (17) is a deflecting roller on the top part (5), the arrangement being such that a shortening of the distance (b) results in a lengthening of the second distance (a) and vice versa.
- Chair according to Claim 1, characterized in that the distances (a) and (b) are dimensioned such that a shortening of the first distance (b) results in a lengthening of the second distance (a) in a ratio of approximately 1:2.
- Chair according to Claim 1 or 2, characterized in that a safety switch (22) is coupled to the force-transmission element (15) and is arranged such that, when the force-transmission element (15) is not taut, it interrupts an adjustment drive (13) for the seat (9) and/or the height-adjustment device (2).
- Chair according to one of claims 1 to 3, characterized in that two of each of the parts (15 to 18), which effect the positive coupling, are provided, the force-transmission element (15) of one arrangement being slightly longer and therefore, unlike that of the other arrangement, not being taut.
- Chair according to one of Claims 1 to 4, characterized in that a roller chain is provided as the force-transmission element (15), and chain wheels are provided as the guiding or deflecting rollers (16, 17, 18).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19544545 | 1995-11-29 | ||
| DE19544545A DE19544545C1 (en) | 1995-11-29 | 1995-11-29 | Device for the force-coupled adjustment of the seat and backrest of a dental patient chair |
| PCT/DE1996/002180 WO1997019666A2 (en) | 1995-11-29 | 1996-11-15 | Device for adjusting the forcibly coupled seat and back of a dentist chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0902677A1 EP0902677A1 (en) | 1999-03-24 |
| EP0902677B1 true EP0902677B1 (en) | 2000-02-09 |
Family
ID=7778735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96945990A Expired - Lifetime EP0902677B1 (en) | 1995-11-29 | 1996-11-15 | Dentist chair including device for adjusting the forcibly coupled seat and back |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5992934A (en) |
| EP (1) | EP0902677B1 (en) |
| DE (2) | DE19544545C1 (en) |
| IN (1) | IN188528B (en) |
| WO (1) | WO1997019666A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011078469A1 (en) | 2011-06-30 | 2013-01-03 | Sirona Dental Systems Gmbh | Treatment couch, particularly dental patient chair comprises lever mechanism for vertical adjustment of couch, where gear base cooperates with support lever, which is mounted on side of pivotable holding element |
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| DE19853271A1 (en) * | 1998-11-18 | 2000-05-25 | Maquet Ag | Examination chair |
| US7290836B2 (en) * | 2003-08-28 | 2007-11-06 | A-Dec, Inc. | Patient chair |
| EP1789278A2 (en) | 2004-08-16 | 2007-05-30 | Hill-Rom Services, Inc. | Chair |
| US7537069B2 (en) | 2004-08-16 | 2009-05-26 | Hill-Rom Services, Inc. | Home care equipment system |
| DE102005040402B3 (en) * | 2005-08-26 | 2007-05-03 | Hanning Elektro-Werke Gmbh & Co. Kg | Pivoting drive for a arranged on a Untergstell structure, preferably for an operating table or a dentist chair |
| US8388065B2 (en) * | 2010-09-07 | 2013-03-05 | Honda Motor Co., Ltd. | Vehicle seat |
| US9603453B2 (en) * | 2010-12-29 | 2017-03-28 | Ultra-Mek, Inc. | Reclining chair with tilting action to provide heart-rest position |
| USD680223S1 (en) | 2011-10-19 | 2013-04-16 | Reliance Medical Products, Inc. | Examination chair |
| US8936315B2 (en) | 2011-10-19 | 2015-01-20 | Reliance Medical Products, Inc. | Ophthalmic examination chair having tilt drive assembly |
| US11140987B2 (en) | 2019-02-14 | 2021-10-12 | Deer Solutions LLC | Athletic chair with adjustable heating and height |
| CN111938978A (en) * | 2020-07-23 | 2020-11-17 | 李友安 | Anti-shaking device for dental chair |
| CN113679561A (en) * | 2021-08-06 | 2021-11-23 | 奥佳华智能健康科技集团股份有限公司 | Chair frame and massage armchair |
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| US3578379A (en) * | 1967-12-28 | 1971-05-11 | Pennwalt Corp | Adjustable chair |
| DE2251737B2 (en) * | 1972-10-21 | 1978-04-13 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Dental chair with parallelogram support arm |
| US3873152A (en) * | 1974-01-09 | 1975-03-25 | John Garas | Adjustable orthopedic lounger |
| DE3018684A1 (en) * | 1980-05-15 | 1981-11-26 | Ritter Ag, 7500 Karlsruhe | Patients chair with lifting parallelogram - has slide moved horizontally forwards on yoke on lowering |
| JPS5866925U (en) * | 1981-10-30 | 1983-05-07 | 住友重機械工業株式会社 | Connection device to mold |
| DE3632131C2 (en) * | 1986-06-04 | 2001-12-13 | Hartmut S Engel | Functional seating |
| FR2627968A1 (en) * | 1988-03-07 | 1989-09-08 | Eurosit | Office chair with back moved backwards and forwards - with back joined to support articulated on seat support and cable connecting back and seat support |
| EP0373245B1 (en) * | 1988-12-14 | 1993-02-17 | Siemens Aktiengesellschaft | Dental chair |
| FR2671702A1 (en) * | 1991-01-22 | 1992-07-24 | Lavigne Pierre | Variable-geometry chair |
-
1995
- 1995-11-29 DE DE19544545A patent/DE19544545C1/en not_active Expired - Fee Related
-
1996
- 1996-11-15 IN IN1988CA1996 patent/IN188528B/en unknown
- 1996-11-15 WO PCT/DE1996/002180 patent/WO1997019666A2/en active IP Right Grant
- 1996-11-15 US US09/077,401 patent/US5992934A/en not_active Expired - Lifetime
- 1996-11-15 EP EP96945990A patent/EP0902677B1/en not_active Expired - Lifetime
- 1996-11-15 DE DE59604445T patent/DE59604445D1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011078469A1 (en) | 2011-06-30 | 2013-01-03 | Sirona Dental Systems Gmbh | Treatment couch, particularly dental patient chair comprises lever mechanism for vertical adjustment of couch, where gear base cooperates with support lever, which is mounted on side of pivotable holding element |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19544545C1 (en) | 1997-01-16 |
| WO1997019666A3 (en) | 2001-09-13 |
| WO1997019666A2 (en) | 1997-06-05 |
| IN188528B (en) | 2002-10-12 |
| DE59604445D1 (en) | 2000-03-16 |
| EP0902677A1 (en) | 1999-03-24 |
| US5992934A (en) | 1999-11-30 |
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