US3565469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock for connecting structural elements
Assignee: A de Hoop NV
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Filing: 1968-12-03
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Granted: 1971-02-23
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Expires: 1988-12-03
Abstract
Abstract A LOCK FOR JOINING STRUCTURAL PANELS IS DISCLOSED, COMPRISING IDENTICAL OPEN-ENDED HOUSINGS RESPECTIVELY CARRIED IN THE FACING EDGES OF THE PANELS TO BE JOINED, EACH HOUSING HAVING A TRANSVERSE MEMBER ADAPTED TO BE ENGAGED BY AN ECCENTRICALLY OPERATED LATCH HOOK REMOVABLY MOUNTED IN THE OTHER HOUSING. AN OPENING IN EACH HOUSING ALLOWS ENTRY OF A KEY FOR MOVING THE LATCH HOOK RELATIVELY TO THE TRANSVERSE MEMBER OF THE OTHER HOUSING, THUS PERMITTING SELECTIVE ENGAGEMENT AND DISENGAGEMENT OF THE LATCH HOOK AND THE COOPERATING TRANSVERSE MEMBER. GUIDE MEANS ARE LOCATED IN EACH LOCK HOUSING TO FACILITATE MOUNTING OF THE LATCH HOOK WITHIN THE HOUSING.
Inventors
- 👤 Frederik Zwart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:36
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/38; E04B1/61; E04B1/6108; E04B1/612; E04B1/6183; E05; E05B; E05B65/00; E05B65/08; E05B65/0811; E05B65/0817; F; F25; F25D; F25D23/00; F25D23/06; F25D23/062; F25D23/063
Claims Analysis
Total Claims: 0
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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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |