Patent US4005845A successfully refreshed from Google Patents.
US4005845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seat assembly including a turnaround-type seat
Assignee: Deere and Co
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Filing: 1976-03-15
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Granted: 1977-02-01
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Expires: 1996-03-15
Abstract
Abstract A tractor includes a seat swivelly mounted on a single seat support arm or member that is vertically swingably mounted on the chassis of the tractor for movement about a horizontal transverse axis between a generally horizontal forward position for disposing the seat in a forwardly facing position for tractor operation and a generally vertical rearward position for disposing the seat in a rearwardly facing position for backhoe operation. The axis about which the seat may swivel is related to the angular displacement of the arm from its forward to its rearward position such that when the arm is repositioned the seat may be repositioned by rotating it through 180°. Latch members are provided for releasably retaining the arm and the seat in selected positions and a single control arm is connected to the latch members so as to simultaneously unlock the arm and the seat when it is desired to reposition the arm and the seat.
Inventors
- 👤 Carlos Enrique Luppi
- 👤 Marino Antonio Tavolini
- 👤 Juan Carlos Roberto Travaini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:49
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/02; B60N2/04; B60N2/14; B60N2/143; E; E02; E02F; E02F9/00; E02F9/16; E02F9/166
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
298 words
A turn-around seat assembly, comprising: a seat support mounted for vertical movement about a first axis between first and second working positions; a latch release lever pivotally mounted on the seat support for movement about a second axis between a normal lock position and a release position; a first latch element fixed to the lever for movement therewith between lock and release positions corresponding to the lock and release positions of the lever, said first latch element including a cam surface means; a member fixed adjacent to the seat support and defining latch surface means arranged for cooperating with the first latch element for releasably retaining the seat support in a selected one of its working positions when the lever is in its normal lock position; a seat mounted on the seat support for swivelling about a third axis between first and second working positions disposed 180° from each other and corresponding to the first and second working positions of the seat support; a second latch element carried by the seat and being movable toward and away from the seat support between lock and release positions; said seat support including second latch surface means arranged for cooperating with the second latch element for releasably retaining the seat in a selected one of its operating positions when the second latch element is in its lock position; and link means being engaged with said cam surface means and kinematically connected between the cam surface means and the second latch element for effecting movement of the second latch element to its release position in response to movement of the first latch element to its release position by the lever; and means biasing the link means against the cam surface means and normally acting to retain the lever in its lock position.
Claim 2
Dependent Claim
298 words
A turn-around seat assembly, comprising: a seat support mounted for vertical movement about a first axis between first and second working positions; a latch release lever pivotally mounted on the seat support for movement about a second axis between a normal lock position and a release position; a first latch element fixed to the lever for movement therewith between lock and release positions corresponding to the lock and release positions of the lever, said first latch element including a cam surface means; a member fixed adjacent to the seat support and defining latch surface means arranged for cooperating with the first latch element for releasably retaining the seat support in a selected one of its working positions when the lever is in its normal lock position; a seat mounted on the seat support for swivelling about a third axis between first and second working positions disposed 180° from each other and corresponding to the first and second working positions of the seat support; a second latch element carried by the seat and being movable toward and away from the seat support between lock and release positions; said seat support including second latch surface means arranged for cooperating with the second latch element for releasably retaining the seat in a selected one of its operating positions when the second latch element is in its lock position; and link means being engaged with said cam surface means and kinematically connected between the cam surface means and the second latch element for effecting movement of the second latch element to its release position in response to movement of the first latch element to its release position by the lever; and means biasing the link means against the cam surface means and normally acting to retain the lever in its lock position.
Claim 3
Dependent Claim
62 words
The seat assembly defined in claim 1 wherein the second latch element is fixed to the seat and the seat and latch element are mounted for axial shifting movement along said swivel axis; and said link means being connected to the seat so as to effect movement thereof and consequently movement of the second latch element when the release lever is actuated.
Claim 4
Dependent Claim
83 words
The seat assembly defined in claim 2 wherein said seat includes a cylindrical post disposed on said swivel axis; said seat support including a tubular receptacle swivelly receiving said post; said second latch element being a pin disposed parallel to said swivel axis; and said second latch surface means including a pair of holes disposed on opposite sides of the swivel axis such that one of the pair of holes receives the pin when the seat is in one of its operative positions.
Claim 5
Dependent Claim
62 words
The seat assembly defined in claim 3 wherein said post includes an end projecting through said receptacle; said link means including a member pivotally mounted on the seat support for movement along the swivel axis and being positioned with a first side in contact with said end of the post and an opposite second side in contact with said cam surface means.
Claim 6
Dependent Claim
31 words
The seat assembly defined in claim 4 wherein the means biasing the link means includes a tension spring connected between said member pivotally mounted on the seat and the seat support.
Claim 7
Dependent Claim
33 words
The seat assembly defined in claim 4 wherein the post includes an abutment adjacent said end and said biasing means including a coil compression spring acting between the seat support and the abutment.
Claim 8
Dependent Claim
33 words
The seat assembly defined in claim 5 wherein the post includes an abutment adjacent said end and said biasing means including a coil compression spring acting between the seat support and the abutment.
Claim 9
Dependent Claim
46 words
The seat assembly defined in claim 4 wherein said member pivotally mounted on the seat support includes a plate portion having an angled end and said cam surface means including a flat portion engaged with the angled end when the lever is in its release position.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |