SE8605453D0 - HYDRAULIC CONTROL DEVICE FOR A TREATMENT CHAIR - Google Patents
HYDRAULIC CONTROL DEVICE FOR A TREATMENT CHAIRInfo
- Publication number
- SE8605453D0 SE8605453D0 SE8605453A SE8605453A SE8605453D0 SE 8605453 D0 SE8605453 D0 SE 8605453D0 SE 8605453 A SE8605453 A SE 8605453A SE 8605453 A SE8605453 A SE 8605453A SE 8605453 D0 SE8605453 D0 SE 8605453D0
- Authority
- SE
- Sweden
- Prior art keywords
- piston units
- cylinder
- line
- return
- feed
- Prior art date
Links
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
Landscapes
- 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)
- Chairs Characterized By Structure (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
In a hydraulic control device for a treatment chair having a plurality of chair parts adjustable relative to one another, having cylinder/piston units (9, 17, 21, 25, 28) inserted between the chair parts, having control valves (44, 47; 81 to 88) in line connections, the cylinder/piston units (9, 17, 21, 25, 28) receiving a flow constricted feed in order to avoid jerky movements of the cylinder/piston units (9, 17, 21, 25, 28), a design is to be found which is not very elaborate, so that it can be produced in a more cost-efficient way, and for this reason at least some of the cylinder/piston units (9, 17, 21, 25, 28) are double-acting cylinder/piston units (17, 21, 25, 28), the two pressure chambers (48, 49) of the double-acting cylinder/piston units (17, 21, 25, 28) being connected via feed-line sections (51 to 58) and return-line sections (59 to 66) to the feed line (31) and the return line (32), and a control valve (81 to 88) being arranged in each return-line section (59 to 66) for the double-acting cylinder/piston units (17, 21, 25, 28), and furthermore a non-return valve (91) which opens in the flow direction being arranged in each of the feed-line sections (51 to 58). <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853545446 DE3545446A1 (en) | 1985-12-20 | 1985-12-20 | Hydraulic control device for a treatment chair |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE8605453D0 true SE8605453D0 (en) | 1986-12-18 |
| SE8605453L SE8605453L (en) | 1987-06-21 |
| SE469873B SE469873B (en) | 1993-10-04 |
Family
ID=6289170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8605453A SE469873B (en) | 1985-12-20 | 1986-12-18 | Hydraulic control device for a treatment chair |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS62155852A (en) |
| DE (1) | DE3545446A1 (en) |
| DK (1) | DK161301C (en) |
| FI (1) | FI82183C (en) |
| IT (2) | IT8654218V0 (en) |
| SE (1) | SE469873B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0373245B1 (en) * | 1988-12-14 | 1993-02-17 | Siemens Aktiengesellschaft | Dental chair |
| JPH02123212U (en) * | 1989-03-23 | 1990-10-09 | ||
| DE69317052T2 (en) * | 1993-12-22 | 1998-06-10 | Tecnodent S P A | Adjustable chair for medical use |
| JPH07298942A (en) * | 1994-05-06 | 1995-11-14 | Shinmeiwa Ribitetsuku Kk | Chair for hairdressing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1179330B (en) * | 1962-10-30 | 1964-10-08 | Adam Schneider G M B H | Dental patient chair |
| US3982741A (en) * | 1975-03-25 | 1976-09-28 | Affiliated Hospital Products, Inc. | Operating table or the like with geometrically compensated differentially movable load sharing multiple hydraulic cylinder and piston arrangement |
| JPS5814222B2 (en) * | 1980-02-19 | 1983-03-17 | 株式会社 モリタ製作所 | Hydraulic drive control device for operating parts of treatment tables, etc. |
| JPS5940211Y2 (en) * | 1980-07-10 | 1984-11-13 | 三菱化成ポリテック株式会社 | Agricultural film that suppresses aphid activity |
| JPS59909U (en) * | 1982-06-25 | 1984-01-06 | 柳沢 要三郎 | Horizontal position indexer for buildings |
-
1985
- 1985-12-20 DE DE19853545446 patent/DE3545446A1/en active Granted
-
1986
- 1986-12-17 FI FI865148A patent/FI82183C/en not_active IP Right Cessation
- 1986-12-18 IT IT8654218U patent/IT8654218V0/en unknown
- 1986-12-18 IT IT67945/86A patent/IT1196855B/en active
- 1986-12-18 SE SE8605453A patent/SE469873B/en not_active IP Right Cessation
- 1986-12-19 JP JP61301901A patent/JPS62155852A/en active Granted
- 1986-12-19 DK DK618486A patent/DK161301C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| IT8667945A0 (en) | 1986-12-18 |
| DK161301B (en) | 1991-06-24 |
| DK618486D0 (en) | 1986-12-19 |
| DK618486A (en) | 1987-06-21 |
| FI865148A0 (en) | 1986-12-17 |
| SE8605453L (en) | 1987-06-21 |
| DE3545446A1 (en) | 1987-07-02 |
| IT8654218V0 (en) | 1986-12-18 |
| SE469873B (en) | 1993-10-04 |
| JPH0370972B2 (en) | 1991-11-11 |
| JPS62155852A (en) | 1987-07-10 |
| DE3545446C2 (en) | 1987-11-19 |
| FI82183C (en) | 1991-02-11 |
| FI82183B (en) | 1990-10-31 |
| DK161301C (en) | 1991-12-02 |
| FI865148A (en) | 1987-06-21 |
| IT1196855B (en) | 1988-11-25 |
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| NAL | Patent in force |
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