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Patent US3568268A successfully refreshed from Google Patents.
US3568268A
Expired / Lapsed
US
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Releasable connecting device
Assignee: Wingard Ltd
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Filing: 1969-07-30
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Granted: 1971-03-09
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Expires: 1989-07-30
Abstract
Abstract A FASTENING DEVICE FOR RELEASABLY CONNECTING TWO MEMBERS INCORPORATES A RIGID FRAME, A RELEASE LEVER PIVOTALLY MOUNTED ON THE FRAME, AND A PAWL ANGULARLY MOVABLE IN ALIGNED SHAPED OPENINGS IN THE FRAME AND LEVER AND ADAPTED TO ENGAGE WITH A STEP OR SHOULDER ON A TONGUE INSERTED INTO THE FRAME, THE CO-OPERATION OF THE PAWL WITH THE OPENINGS BEING SUCH THAT AFORCE ACTING TO SEPARATE THE MEMBERS HAS A COMPONENT ACTING ON THE RELEASE LEVER TO HOLD IT IN THE LOCKED POSITION WHEN THE MEMBERS ARE ENGAGED AND A COMPONENT URGING THE RELEASE LEVER AWAY FROM THE LOCKED POSITION AFTER AN INITIAL MOVEMENT IN THAT DIRECTION EFFECTED MANUALLY.
Inventors
- 👤 Douglas James Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:33
CPC Classifications
A; A44; A44B; A44B11/00; A44B11/25; A44B11/2503; A44B11/2507; A44B11/2515; Y; Y10; Y10T; Y10T24/00; Y10T24/45; Y10T24/45225; Y10T24/45602; Y10T24/45623; Y10T24/4566; Y10T24/45665
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |