Patent US3780839A successfully refreshed from Google Patents.
US3780839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interlock for transmission and parking brake controls
Assignee: Deere and Co
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Filing: 1972-11-10
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Granted: 1973-12-25
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Expires: 1992-11-10
Abstract
Abstract The control linkages for a change-speed transmission and a parking brake have interlocking parts which lock the transmission in neutral either when the transmission is in neutral and the parking brake is then engaged or when the parking brake is applied and the transmission is then shifted into neutral.
Inventors
- 👤 K Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:07
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/103; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20085; Y10T74/20104
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
132 words
In a vehicle having a parking brake apparatus actuatable between brake-engaging and brake-releasing conditions and a change-speed transmission shiftable between neutral and driveestablishing conditions, the combination comprising: transmission control means including a controller mounted for pivotal swinging movement between a neutral and a drive-establishing position to respectively effect the neutral and drive-establishing conditions of the transmission; a brake control means including a substantially linearly shiftable link movable between brakeengaging and brake-releasing positions to respectively effect the brake-engaging and brake-releasing conditions in said brake apparatus; and interlock means being connected between said controller and said link for blocking said controller in said neutral position both when the controller is in said neutral position and said link is thereafter moved to said brake-engaging position and said controller is thereafter pivoted to said neutral position.
Claim 2
Dependent Claim
132 words
In a vehicle having a parking brake apparatus actuatable between brake-engaging and brake-releasing conditions and a change-speed transmission shiftable between neutral and driveestablishing conditions, the combination comprising: transmission control means including a controller mounted for pivotal swinging movement between a neutral and a drive-establishing position to respectively effect the neutral and drive-establishing conditions of the transmission; a brake control means including a substantially linearly shiftable link movable between brakeengaging and brake-releasing positions to respectively effect the brake-engaging and brake-releasing conditions in said brake apparatus; and interlock means being connected between said controller and said link for blocking said controller in said neutral position both when the controller is in said neutral position and said link is thereafter moved to said brake-engaging position and said controller is thereafter pivoted to said neutral position.
Claim 3
Dependent Claim
112 words
The vehicle defined in claim 1 wherein said controller has a portion defining a first contact surface; said interlock means including a pivotally mounted arm having a portion defining a second contact surface; said arm being swingable between unblocking and blocking positions respectively wherein said second contact surface is disposed out of the path of movement of said controller and in the path of movement of and in bearing engagement with said first contact surface and connecting means joining said arm with said link for effecting movement of said arm from said unblocking position to said blocking position respectively as the link is moved from said brake-releasing position to said brake-engaging position.
Claim 4
Dependent Claim
40 words
The vehicle defined in claim 2 wherein said connecting means includes biasing means connected between said arm and link and being responsive to the movement of said link toward said brake-engaging position for biasing said arm toward said blocking position.
Claim 5
Dependent Claim
128 words
The vehicle defined in claim 3 wherein said arm has a portion defining a third contact surface which is formed on a radius having the center of rotation of said controller as its center when the arm is in said unblocking position, said third contact surface then being adjacent to and paralleling the path of movement of a fourth contact surface defined by a portion of said controller; and said biAsing means acting to effect engagement between said third and fourth contact surfaces when the controller is in said drive-establishing position and said link is moved from brake-releasing position toward said brake-engaging position, the biasing means then being conditioned for effecting movement of said arm to said blocking position when the controller is moved to said neutral position.
Claim 6
Dependent Claim
45 words
The vehicle defined in claim 4 wherein said interlocking means includes adjustable abutment means carried by said link and being disposed to contact said arm for causing the latter to be rotated to said unblocking position when said link is moved to said brake-releasing position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |