US3259418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick release tow hook
Assignee: Brown Lenox and Co Ltd
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Filing: 1964-03-27
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Granted: 1966-07-05
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Expires: 1984-03-27
Abstract
No abstract record available.
Inventors
- 👤 Munday William George
- 👤 Huebner Leslie John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:48
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/01; B60D1/04; B63; B63B; B63B21/00; B63B21/56; B63B21/58; B63B21/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
A QUICK RELEASE TOW HOOK ASSEMBLY COMPRISING TWO SIDE PLATES, A HOOK MEMBER, MEANS FOR PIVOTALLY MOUNTING SAID HOOK MEMBER BETWEEN SAID SIDE PLATES, SAID HOOK MEMBER HAVING TWO ARMS, ONE OF WHICH FORMS A HOOK AND THE OTHER ARM BEING A RESTAINING ARM, AND TRIP MEANS INCLUDING AT LEAST ONE BELL CRANK LEVER HAVING A FIRST ARM AND A SECOND ARM, SAID FIRST ARM BEING RADIUS ARM, MEANS FOR MOUNTING SAID RADIUS ARM BETWEEN SAID TWO SIDE PLATES, A HOOK RETAINING MEMBER CARRIED BY SAID RADIUS ARM AND ARRANGED NORMALLY TO OVERLID SAID RETAINING ARM OF SAID HOOK MEMBER, A RELEASE LEVER TO OPERATE SAID TRIP MEANS, SAID RELEASE LEVER HAVING A SLOT THEREIN, FOLLOWER MEANS FOR OPERATIVELY CONNECTING SAID SLOT TO SAID SECOND ARM OF SAID BELL CRANK LEVER, AND MEANS FOR MOUNTING SAID RELEASE LEVER FOR MOVEMENT BETWEEN A FIRST POSITION IN WHICH SAID SLOT MAINTAINS SAID BELL CRANK LEVER IN ITS OPERATIVE POSITION AND A SECOND POSITION IN WHICH SAID SLOT ALLOWS DISENGAGEMENT OF SAID HOOK RETAINING MEMBER FROM SAID RETAINING ARM IN RESPONSE TO FORCES EXERTED ON SAID HOOK RETAINING MEMBER BY SAID RETAINING ARM.
Claim 2
Dependent Claim
190 words
A QUICK RELEASE TOW HOOK ASSEMBLY COMPRISING TWO SIDE PLATES, A HOOK MEMBER, MEANS FOR PIVOTALLY MOUNTING SAID HOOK MEMBER BETWEEN SAID SIDE PLATES, SAID HOOK MEMBER HAVING TWO ARMS, ONE OF WHICH FORMS A HOOK AND THE OTHER ARM BEING A RESTAINING ARM, AND TRIP MEANS INCLUDING AT LEAST ONE BELL CRANK LEVER HAVING A FIRST ARM AND A SECOND ARM, SAID FIRST ARM BEING RADIUS ARM, MEANS FOR MOUNTING SAID RADIUS ARM BETWEEN SAID TWO SIDE PLATES, A HOOK RETAINING MEMBER CARRIED BY SAID RADIUS ARM AND ARRANGED NORMALLY TO OVERLID SAID RETAINING ARM OF SAID HOOK MEMBER, A RELEASE LEVER TO OPERATE SAID TRIP MEANS, SAID RELEASE LEVER HAVING A SLOT THEREIN, FOLLOWER MEANS FOR OPERATIVELY CONNECTING SAID SLOT TO SAID SECOND ARM OF SAID BELL CRANK LEVER, AND MEANS FOR MOUNTING SAID RELEASE LEVER FOR MOVEMENT BETWEEN A FIRST POSITION IN WHICH SAID SLOT MAINTAINS SAID BELL CRANK LEVER IN ITS OPERATIVE POSITION AND A SECOND POSITION IN WHICH SAID SLOT ALLOWS DISENGAGEMENT OF SAID HOOK RETAINING MEMBER FROM SAID RETAINING ARM IN RESPONSE TO FORCES EXERTED ON SAID HOOK RETAINING MEMBER BY SAID RETAINING ARM.
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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |