US3601231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parking brake mechanism
Assignee: Deutz Allis Corp
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Filing: 1969-03-28
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Granted: 1971-08-24
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Expires: 1989-03-28
Abstract
Abstract A vehicle mechanism for operating a positive parking brake and shifting a transmission which includes an interlock to prevent shifting into a driving ratio when the brake is engaged. A safety switch 34 prevents starting of the engine when the brake is released and the transmission is engaged.
Inventors
- 👤 Ferdynand Kolacz
- 👤 Donald W Longshore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:34
CPC Classifications
F; F16; F16H; F16H63/00; F16H63/02; F16H63/30; F16H63/34; F16H63/3416; B; B60; B60T; B60T1/00; B60T1/005; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19637
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
149 words
A positive drive shaft lock comprising a braking gear connected for rotation with a drive shaft, a pawl lever including a pawl arm having pawl means engaging said gear, an operating arm on said pawl lever defining an actuating ramp and a locking surface forming a plane, means defining a pivotal axis and pivotally supporting said lever between said pawl arm and said operating arm, a park shift rail defining an axis of reciprocal movement parallel with the plane of said locking surface and said pivotal axis, a park lock actuator including a carriage supported roller mounted on said park shift rail, a control means moving said carrier supported roller across said ramp and engaging said locking surface on a line of contact parallel with the axis of said rail and said pivotal axis to thereby cause said pawl lever to lock the braking gear on said drive shaft.
Claim 2
Dependent Claim
149 words
A positive drive shaft lock comprising a braking gear connected for rotation with a drive shaft, a pawl lever including a pawl arm having pawl means engaging said gear, an operating arm on said pawl lever defining an actuating ramp and a locking surface forming a plane, means defining a pivotal axis and pivotally supporting said lever between said pawl arm and said operating arm, a park shift rail defining an axis of reciprocal movement parallel with the plane of said locking surface and said pivotal axis, a park lock actuator including a carriage supported roller mounted on said park shift rail, a control means moving said carrier supported roller across said ramp and engaging said locking surface on a line of contact parallel with the axis of said rail and said pivotal axis to thereby cause said pawl lever to lock the braking gear on said drive shaft.
Claim 3
Dependent Claim
45 words
A positive drive shaft lock as set forth in claim 1 including a spring engaging said pawl lever and normally biasing said pawl lever to the disengaged position and said pawl lever is manually operated to engage the pawl lever with the drive shaft gear.
Claim 4
Dependent Claim
54 words
A positive drive shaft as set forth in claim 1 including means pivotally mounting said pawl lever at a point coincidental with a tangential force produced by the locking of said braking gear and therefore eliminating any tangential component tending to unlock the pawl lever from the braking gear regardless of drive shaft rotation.
Claim 5
Dependent Claim
54 words
A positive drive shaft lock as set forth in claim 1 wherein said pawl lever includes a gear segment engaging said braking gear producing radial component tending to release the drive shaft lock in event the pawl lever does not completely pivot out of engagement with the braking ear when the actuator is released.
Claim 6
Dependent Claim
28 words
A positive drive shaft lock as set forth in claim 1 wherein said pawl lever defines a pivoting axis parallel to the axis of said park shift rail.
Claim 7
Dependent Claim
30 words
A positive drive shaft lock as set forth in claim 1 wherein said pawl means defines a gear segment having involute teeth and said braking gear defines involute gear teeth.
Claim 8
Dependent Claim
59 words
A positive drive shaft lock as set forth in claim 1 wherein said actuator includes said roller rotatably mounted on said actuator, said roller defines an arcuate cross-sectional surface rolling on said ramp of said lever to actuate said pawl lever, said roller on said actuator produces a force normal to the locking surface to lock said pawl lever.
References Cited (Backward Citations)
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Cited
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US3116815A
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US3110363A
Cited
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Cited
US3213968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |