Patent US3215230A successfully refreshed from Google Patents.
US3215230A
Expired / Lapsed
US
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Trailer hitch with means for automatically actuating trailer brakes
Assignee: Toledo Stamping and Manufacturing Co
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Filing: 1963-01-16
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Granted: 1965-11-02
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Expires: 1983-01-16
Abstract
No abstract record available.
Inventors
- 👤 Joseph L Wherry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:28
CPC Classifications
B; B60; B60T; B60T7/00; B60T7/12; B60T7/20; B60D; B60D1/00; B60D1/01; B60D1/06; B60D1/065; B60T11/00; B60T11/10; B60T11/107
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A TRAILER HITCH OCMPRISING A FRONT HITCH MEMBER ADAPTED TO BE CONNECTED TO A TOWING VEHICLE, A REAR HITCH MEMBER ADAPTED TO BE ATTACHED TO A TRAILER, MEANS CONNECTING SAID HITCH MEMBERS AND ENABLING RELATIVE MOVEMENT THEREBETWEEN, A HYDRAULIC BRAKE CYLINDER MOUNTED IN A FIXED POSITION RELATIVE TO ONE OF SAID HITCH MEMBERS, AN ACTUATING MEMBER MOVABLEY SUPPORTED BY THE OTHER HITCH MEMBER AND HAVING A PORTION POSITIONED TO ENGAGE A PORTION OF A PISTON ROD OF SAID HYDRAULIC BRAKE CYLINDER TO MOVE SAID PISTON ROD TOWARD SAID CYLINDER TO ACTUATE BRAKES OF THE TRAILER, SHOCK ABSORBER MEANS DIRECTLY CONNECTING SAID ONE HITCH MEMBER AND SAID ACTUATING MEMBER, SAID SHOCK ABROSBER MEANS PROVIDING HIGH RESISTANCE TO RELATIVE MOVEMENT BETWEEN SAID ONE HITCH MEMBER AND SAID ACUTATING MEMBER UPON SUDDEN MOVEMENT BE-
Claim 2
Dependent Claim
131 words
A TRAILER HITCH OCMPRISING A FRONT HITCH MEMBER ADAPTED TO BE CONNECTED TO A TOWING VEHICLE, A REAR HITCH MEMBER ADAPTED TO BE ATTACHED TO A TRAILER, MEANS CONNECTING SAID HITCH MEMBERS AND ENABLING RELATIVE MOVEMENT THEREBETWEEN, A HYDRAULIC BRAKE CYLINDER MOUNTED IN A FIXED POSITION RELATIVE TO ONE OF SAID HITCH MEMBERS, AN ACTUATING MEMBER MOVABLEY SUPPORTED BY THE OTHER HITCH MEMBER AND HAVING A PORTION POSITIONED TO ENGAGE A PORTION OF A PISTON ROD OF SAID HYDRAULIC BRAKE CYLINDER TO MOVE SAID PISTON ROD TOWARD SAID CYLINDER TO ACTUATE BRAKES OF THE TRAILER, SHOCK ABSORBER MEANS DIRECTLY CONNECTING SAID ONE HITCH MEMBER AND SAID ACTUATING MEMBER, SAID SHOCK ABROSBER MEANS PROVIDING HIGH RESISTANCE TO RELATIVE MOVEMENT BETWEEN SAID ONE HITCH MEMBER AND SAID ACUTATING MEMBER UPON SUDDEN MOVEMENT BE-
References Cited (Backward Citations)
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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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |