US3132878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chain locking device
Assignee: Dico Corp
•
Filing: 1962-07-11
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Granted: 1964-05-12
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Expires: 1982-07-11
Abstract
No abstract record available.
Inventors
- 👤 Puydt Frank A De
- 👤 Roger C Silver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:24
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/28; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A SAFETY CHAIN FASTENING DEVICE COMPRISING; AN ELONGATED CROSS BAR ADAPTED TO BE CLAMPED TO THE DRAW BAR OF A VEHICLE, A CHAIN LOCKING MEANS ON EACH TERMINAL END OF SAID CROSS BAR, EACH OF SAID CHAIN LOCKING MEANS INCLUDING AN ELONGATED SLOT EXTENDING LONGITUDINALLY OF SAID CROSS BAR, A TRANSVERSELY EXTENDING SLOT IN SAID CROSS BAR INTERSECTING SAID ELONGATED SLOT AT RIGHT ANGLES THERETO AND TO ONE SIDE OF THE MID-POINT THEREOF, A RESILIENT RETAINING MEMBER PIVOTED TO SAID CROSS BAR AND OVERLYING SAID TRANSVERSE SLOT AND A SUBSTANTIAL PORTION OF SAID ELONGATED SLOT, AND AN INTEGRAL PROJECTION ON THE FACE OF SAID RESILIENT MEMBER FOR ENGAGING SAID TRANSVERSE SLOT WHEN SAID MEMBER IS IN OVERLYING POSITION ON SAID SLOTS, WHEREBY A CHAIN LINK WHICH IS PASSED THROUGH THE INTERSECTING PORTIONS OF SAID SLOTS MAY BE MOVED ALONG THE UNCOVERED PORTION OF SAID ELONGATED SLOT AND RETAINED THERE BY SAID RESILENT MEMBER.
Claim 2
Dependent Claim
153 words
A SAFETY CHAIN FASTENING DEVICE COMPRISING; AN ELONGATED CROSS BAR ADAPTED TO BE CLAMPED TO THE DRAW BAR OF A VEHICLE, A CHAIN LOCKING MEANS ON EACH TERMINAL END OF SAID CROSS BAR, EACH OF SAID CHAIN LOCKING MEANS INCLUDING AN ELONGATED SLOT EXTENDING LONGITUDINALLY OF SAID CROSS BAR, A TRANSVERSELY EXTENDING SLOT IN SAID CROSS BAR INTERSECTING SAID ELONGATED SLOT AT RIGHT ANGLES THERETO AND TO ONE SIDE OF THE MID-POINT THEREOF, A RESILIENT RETAINING MEMBER PIVOTED TO SAID CROSS BAR AND OVERLYING SAID TRANSVERSE SLOT AND A SUBSTANTIAL PORTION OF SAID ELONGATED SLOT, AND AN INTEGRAL PROJECTION ON THE FACE OF SAID RESILIENT MEMBER FOR ENGAGING SAID TRANSVERSE SLOT WHEN SAID MEMBER IS IN OVERLYING POSITION ON SAID SLOTS, WHEREBY A CHAIN LINK WHICH IS PASSED THROUGH THE INTERSECTING PORTIONS OF SAID SLOTS MAY BE MOVED ALONG THE UNCOVERED PORTION OF SAID ELONGATED SLOT AND RETAINED THERE BY SAID RESILENT MEMBER.
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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |