US3231295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-jackknifing device for tractor-trailers
Assignee: Individual
•
Filing: 1964-05-15
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Granted: 1966-01-25
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Expires: 1984-05-15
Abstract
No abstract record available.
Inventors
- 👤 Till William Bryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:26
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/0871; B62D53/0878; B60; B60T; B60T1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
AN ANTI-JACKKNIFING DEVICE FOR TRACTOR-TRAILER UNITS IN WHICH THE TRACTOR UNIT IS PROVIDED WITH A LOWER PLATE HAVING A REARWARDLY EXTENDING SLOT COMMUNICATING WITH THE REAR EDGE THEREOF, SAID DEVICE COMPRISING A PLATE ADAPTED TO ENGAGE THE LOWER PLATE, SAID PLATE BEING ROTATABLY MOUNTED ON THE TRAILER UNIT FOR SURFACE ENGAGEMENT WITH THE LOWER PLATE ON THE TRACTOR UNIT, A CENTRALLY DISPOSED DEPENDING KINGPIN ON THE ROTATABLE PLATE FOR ENGAGEMENT WITH THE LOWER PLATE, A DEPENDING LOCK PIN ON THE ROTATABLE PLATE IN SPACED RELATION TO THE KINGPIN AND RECEIVED IN THE SLOT IN THE LOWER PLATE FOR LOCKING THE ROTATABLE PLATE NON-ROTATIVELY TO THE LOWER PLATE FOR MOVEMENT THEREWITH, AND BRAKE MEANS ENGAGEABLE WITH THE ROTATABLE UPPER PLATE FOR RESISTING ROTATION THEREOF, SAID KINGPIN EXTENDING THROUGH SAID ROTATABLE PLATE AND INCLUDING A VERTICALLY EXTENDING UPRIGHT PORTION, SUPPORT MEANS FOR SAID UPRIGHT PORTION, A BRAKE DRUM RIGIDLY AFFIXED TO THE UPRIGHT PORTION, AND BRAKE SHOE MEANS ENGAGEABLE WITH THE BRAKE DRUM FOR FRICTIONALLY ENGAGING THE BRAKE DRUM, SAID BRAKE DRUM AND BRAKE SHOE MEANS FORMING THE BRAKE MEANS FOR RETARDING ROTATION OF THE ROTATABLE PLATE, SAID BRAKE MEANS ADAPTED TO BE OPERATED IN RESPONSE TO APPLICATION OF THE BRAKES OF THE TRACTOR-TRAILER UNIT.
Claim 2
Dependent Claim
203 words
AN ANTI-JACKKNIFING DEVICE FOR TRACTOR-TRAILER UNITS IN WHICH THE TRACTOR UNIT IS PROVIDED WITH A LOWER PLATE HAVING A REARWARDLY EXTENDING SLOT COMMUNICATING WITH THE REAR EDGE THEREOF, SAID DEVICE COMPRISING A PLATE ADAPTED TO ENGAGE THE LOWER PLATE, SAID PLATE BEING ROTATABLY MOUNTED ON THE TRAILER UNIT FOR SURFACE ENGAGEMENT WITH THE LOWER PLATE ON THE TRACTOR UNIT, A CENTRALLY DISPOSED DEPENDING KINGPIN ON THE ROTATABLE PLATE FOR ENGAGEMENT WITH THE LOWER PLATE, A DEPENDING LOCK PIN ON THE ROTATABLE PLATE IN SPACED RELATION TO THE KINGPIN AND RECEIVED IN THE SLOT IN THE LOWER PLATE FOR LOCKING THE ROTATABLE PLATE NON-ROTATIVELY TO THE LOWER PLATE FOR MOVEMENT THEREWITH, AND BRAKE MEANS ENGAGEABLE WITH THE ROTATABLE UPPER PLATE FOR RESISTING ROTATION THEREOF, SAID KINGPIN EXTENDING THROUGH SAID ROTATABLE PLATE AND INCLUDING A VERTICALLY EXTENDING UPRIGHT PORTION, SUPPORT MEANS FOR SAID UPRIGHT PORTION, A BRAKE DRUM RIGIDLY AFFIXED TO THE UPRIGHT PORTION, AND BRAKE SHOE MEANS ENGAGEABLE WITH THE BRAKE DRUM FOR FRICTIONALLY ENGAGING THE BRAKE DRUM, SAID BRAKE DRUM AND BRAKE SHOE MEANS FORMING THE BRAKE MEANS FOR RETARDING ROTATION OF THE ROTATABLE PLATE, SAID BRAKE MEANS ADAPTED TO BE OPERATED IN RESPONSE TO APPLICATION OF THE BRAKES OF THE TRACTOR-TRAILER UNIT.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |