US3101959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Braking arrangement for a trailer dolly
Assignee: Pierce Trailer and Equipment Co
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Filing: 1961-05-26
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Granted: 1963-08-27
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Expires: 1981-05-26
Abstract
No abstract record available.
Inventors
- 👤 Adams Charles Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:05
CPC Classifications
B; B62; B62D; B62D13/00; B62D13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
DEACTIVATING MEANS FOR A TRAILER DOLLY BRAKE, SAID BRAKE BEING AT THE ROTATABLE CONNECTION BETWEEN A DOLLY AND TRAILER AND BEING ADAPTED TO PREVENT RELATIVE ROTATION BETWEEN SAID TRAILER DOLLY AND SAID TRAILER, SAID TRAILER DOLLY INCLUDING A DRAWBAR AND A COUPLER FOR PIVOTALLY CONNECTING SAID DRAWBAR TO A LEADING VEHICLE, SAID LEADING VEHICLE INCLUDING A FIRST MANUAL CONTROL MEANS FOR APPLYING AND RELEASING SAID BRAKE AND CONNECTING MEANS OPERATIVELY CONNECTING SAID FIRST CONTROL MEANS AND SAID BRAKE; SAID DEACTIVATING MEANS INCLUDING A SECOND CONTROL MEANS EFFECTIVELY INTERPOSED BETWEEN SAID FIRST CONTROL MEANS AND SAID BRAKE FOR DEENERGIZING SAID FIRST TROL MEANS AND THEREBY RELEASING SAID BRAKE UPON ACTUATING THEREOF; AND SENSING MEANS, INCLUDING COOPERATIVE ELEMENTS MOUNTED ON SAID DRAWBAR AND SAID VEHICLE ADJACENT SAID COUPLER, RESPONSIVE TO MOVEMENT OF SAID DRAWBAR BEYOND PREDETERMINED ANGULAR LIMITS RELATIVE TO SAID LEADING VEHICLE FOR EFFECTING ACTUATION OF SAID SECOND CONTROL MEANS.
Claim 2
Dependent Claim
149 words
DEACTIVATING MEANS FOR A TRAILER DOLLY BRAKE, SAID BRAKE BEING AT THE ROTATABLE CONNECTION BETWEEN A DOLLY AND TRAILER AND BEING ADAPTED TO PREVENT RELATIVE ROTATION BETWEEN SAID TRAILER DOLLY AND SAID TRAILER, SAID TRAILER DOLLY INCLUDING A DRAWBAR AND A COUPLER FOR PIVOTALLY CONNECTING SAID DRAWBAR TO A LEADING VEHICLE, SAID LEADING VEHICLE INCLUDING A FIRST MANUAL CONTROL MEANS FOR APPLYING AND RELEASING SAID BRAKE AND CONNECTING MEANS OPERATIVELY CONNECTING SAID FIRST CONTROL MEANS AND SAID BRAKE; SAID DEACTIVATING MEANS INCLUDING A SECOND CONTROL MEANS EFFECTIVELY INTERPOSED BETWEEN SAID FIRST CONTROL MEANS AND SAID BRAKE FOR DEENERGIZING SAID FIRST TROL MEANS AND THEREBY RELEASING SAID BRAKE UPON ACTUATING THEREOF; AND SENSING MEANS, INCLUDING COOPERATIVE ELEMENTS MOUNTED ON SAID DRAWBAR AND SAID VEHICLE ADJACENT SAID COUPLER, RESPONSIVE TO MOVEMENT OF SAID DRAWBAR BEYOND PREDETERMINED ANGULAR LIMITS RELATIVE TO SAID LEADING VEHICLE FOR EFFECTING ACTUATION OF SAID SECOND CONTROL MEANS.
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) | 1966-08-26 | 1967-02-25 | 1967-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-26 | 1971-02-25 | 1971-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-26 | 1975-02-25 | 1975-08-27 | $7700.00 | Window Closed / Lapsed |