FR2447168A1 - Tractor seat back rest with adjustable transverse curvature - uses horizontal bar with vertical undulation screw jack to modify arched profile - Google Patents
Tractor seat back rest with adjustable transverse curvature - uses horizontal bar with vertical undulation screw jack to modify arched profileInfo
- Publication number
- FR2447168A1 FR2447168A1 FR7902028A FR7902028A FR2447168A1 FR 2447168 A1 FR2447168 A1 FR 2447168A1 FR 7902028 A FR7902028 A FR 7902028A FR 7902028 A FR7902028 A FR 7902028A FR 2447168 A1 FR2447168 A1 FR 2447168A1
- Authority
- FR
- France
- Prior art keywords
- seat back
- screw jack
- modify
- horizontal bar
- back rest
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/64—Back-rests or cushions
- B60N2/66—Lumbar supports
- B60N2/667—Lumbar supports having flexible support member bowed by applied forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/64—Back-rests or cushions
- B60N2/66—Lumbar supports
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Handcart (AREA)
Abstract
The adjustable mechanism enables the horizontal curvature of the seat back to be varied to suit the user. Several such mechanisms may be provided at definite vertical intervals, thus, permitting the optimising of lumbar support. Each mechanism may comprise a round section steel bar (3) which undulates uniformly in a vertical plane, and may span between edge framing members (2). One end (4) may be fixed with the other attached (5) to the movable component (6) of a screw jack (6, 7, 8), a knurled hand wheel (7) may allow the jack to be operated from the exterior, the effective bar (3) span being reduced to increase the transverse arching effect or vice versa.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7902028A FR2447168A1 (en) | 1979-01-26 | 1979-01-26 | Tractor seat back rest with adjustable transverse curvature - uses horizontal bar with vertical undulation screw jack to modify arched profile |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7902028A FR2447168A1 (en) | 1979-01-26 | 1979-01-26 | Tractor seat back rest with adjustable transverse curvature - uses horizontal bar with vertical undulation screw jack to modify arched profile |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2447168A1 true FR2447168A1 (en) | 1980-08-22 |
Family
ID=9221246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7902028A Withdrawn FR2447168A1 (en) | 1979-01-26 | 1979-01-26 | Tractor seat back rest with adjustable transverse curvature - uses horizontal bar with vertical undulation screw jack to modify arched profile |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2447168A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2596334A1 (en) * | 1986-03-25 | 1987-10-02 | Renault | Seat backrest with a device for adjusting the lumbar support |
EP0443002A1 (en) * | 1989-09-12 | 1991-08-28 | KORTEWEG, Arie Jacob | Improved adjustable seating assembly |
WO1993005683A1 (en) * | 1991-09-24 | 1993-04-01 | Hendersons Industries Pty. Ltd. | Lumbar support |
FR2766135A1 (en) * | 1997-07-15 | 1999-01-22 | Faure Bertrand Equipements Sa | Tension regulator for flexible lumbar support band of vehicle seat |
US6152531A (en) * | 1996-08-23 | 2000-11-28 | Youngflex Ag | Seat suspension arrangement and adjustment mechanism therefore |
EP1661494A1 (en) * | 2004-11-30 | 2006-05-31 | L&P Swiss Holding Company | Support structure for a seat |
US9604560B1 (en) | 2015-11-13 | 2017-03-28 | Kongsberg Automotive, Inc. | Assembly for adjusting a lumbar region of a seat |
US10427569B2 (en) | 2015-01-26 | 2019-10-01 | Kongsberg Automotive, Inc. | Adjustment mechanism for a seat |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB360516A (en) * | 1930-08-15 | 1931-11-12 | Weymann S Motor Bodies 1925 Lt | Improvements in or relating to seats |
US3095188A (en) * | 1960-11-25 | 1963-06-25 | Ford Motor Co | Seat back rest with adjustable spring rate |
CH547074A (en) * | 1972-10-09 | 1974-03-29 | Zuend & Co Ag K | BACKREST PAD OR REST. |
-
1979
- 1979-01-26 FR FR7902028A patent/FR2447168A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB360516A (en) * | 1930-08-15 | 1931-11-12 | Weymann S Motor Bodies 1925 Lt | Improvements in or relating to seats |
US3095188A (en) * | 1960-11-25 | 1963-06-25 | Ford Motor Co | Seat back rest with adjustable spring rate |
CH547074A (en) * | 1972-10-09 | 1974-03-29 | Zuend & Co Ag K | BACKREST PAD OR REST. |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2596334A1 (en) * | 1986-03-25 | 1987-10-02 | Renault | Seat backrest with a device for adjusting the lumbar support |
EP0443002A1 (en) * | 1989-09-12 | 1991-08-28 | KORTEWEG, Arie Jacob | Improved adjustable seating assembly |
EP0443002A4 (en) * | 1989-09-12 | 1992-03-11 | Arie Jacob Korteweg | Improved adjustable seating assembly |
WO1993005683A1 (en) * | 1991-09-24 | 1993-04-01 | Hendersons Industries Pty. Ltd. | Lumbar support |
GB2275188A (en) * | 1991-09-24 | 1994-08-24 | Hendersons Ind Pty Ltd | Lumbar support |
GB2275188B (en) * | 1991-09-24 | 1995-10-11 | Hendersons Ind Pty Ltd | Lumbar support |
US6152531A (en) * | 1996-08-23 | 2000-11-28 | Youngflex Ag | Seat suspension arrangement and adjustment mechanism therefore |
FR2766135A1 (en) * | 1997-07-15 | 1999-01-22 | Faure Bertrand Equipements Sa | Tension regulator for flexible lumbar support band of vehicle seat |
EP1661494A1 (en) * | 2004-11-30 | 2006-05-31 | L&P Swiss Holding Company | Support structure for a seat |
WO2006058727A1 (en) * | 2004-11-30 | 2006-06-08 | L & P Swiss Holding Company | Support structure for a seat |
CN101068490B (en) * | 2004-11-30 | 2010-09-22 | L&P瑞士持有公司 | Support structure for a seat |
US10427569B2 (en) | 2015-01-26 | 2019-10-01 | Kongsberg Automotive, Inc. | Adjustment mechanism for a seat |
US9604560B1 (en) | 2015-11-13 | 2017-03-28 | Kongsberg Automotive, Inc. | Assembly for adjusting a lumbar region of a seat |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |