US4163398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission shift control lock assembly
Assignee: Caterpillar Inc
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Filing: 1978-02-09
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Granted: 1979-08-07
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Expires: 1998-02-09
Abstract
Abstract A transmission shift control has a member movable in an arcuate pathway between forward and reverse drive positions and through a neutral position intermediate the forward and reverse drive positions. A pair of levers are positioned on opposite sides of the member and are movable to a position for embracing the member and maintaining the member at the neutral position.
Inventors
- 👤 James E. Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:04
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/22; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20238; Y10T74/2025; Y10T74/20576; Y10T74/20636; Y10T74/20648
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
139 words
A transmission shift control lock assembly for a transmission shift control having a support structure and a member pivotally connected to the support structure, said member being movable in an arcuate pathway between first and second positions at which the transmission is in forward and reverse drive conditions respectively, said member having an intermediate position at which the transmission is in neutral, comprising: first and second levers pivotally connected to the support structure and positioned on opposite sides of said member, said levers being movable between a first lever position at which the member is free to move between said first and second positions and a second lever position at which the levers are contacting and maintaining the member at said intermediate position; and means for moving said first and second levers between said first and second lever positions.
Claim 2
Dependent Claim
139 words
A transmission shift control lock assembly for a transmission shift control having a support structure and a member pivotally connected to the support structure, said member being movable in an arcuate pathway between first and second positions at which the transmission is in forward and reverse drive conditions respectively, said member having an intermediate position at which the transmission is in neutral, comprising: first and second levers pivotally connected to the support structure and positioned on opposite sides of said member, said levers being movable between a first lever position at which the member is free to move between said first and second positions and a second lever position at which the levers are contacting and maintaining the member at said intermediate position; and means for moving said first and second levers between said first and second lever positions.
Claim 3
Dependent Claim
66 words
The lock assembly of claim 1 wherein said means includes a crank rotatably connected to the support structure and connected to the first and second levers, said crank being rotatable between a first crank position at which the first and second levers are at the first lever position and a second crank position at which the first and second levers are at the second lever position.
Claim 4
Dependent Claim
33 words
The lock assembly of claim 2 wherein each of said levers has a camming slot therein and including a pair of pins connected to the crank and individually extending through the camming slots.
Claim 5
Dependent Claim
25 words
The lock assembly of claim 3 wherein one of said first and second levers has a free motion slot interconnected to the camming slot therein.
Claim 6
Dependent Claim
25 words
The lock assembly of claim 2 wherein said means includes a third lever connected to said crank and being movable between first and second positions.
Claim 7
Dependent Claim
21 words
The lock assembly of claim 5 including detent means for resiliently maintaining said third lever at said first and second positions.
Claim 8
Dependent Claim
52 words
The lock assembly of claim 1 wherein said first and second levers are so constructed and adapted for moving said member from the respective first and second positions to the intermediate position in response to movement of the first and second levers from the first lever position to the second lever positions.
References Cited (Backward Citations)
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US3710904A
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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) | 1982-08-06 | 1983-02-05 | 1983-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-06 | 1987-02-05 | 1987-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-06 | 1991-02-05 | 1991-08-07 | $7700.00 | Window Closed / Lapsed |