US3822905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic latch
Assignee: THERMOS Co A CORP OF
•
Filing: 1972-10-16
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Granted: 1974-07-09
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Expires: 1992-10-16
Abstract
Abstract A lunch kit or the like embodying an improved and simplified molded plastic latch for retaining the cover in a closed position. The plastic latch is formed from a single element having a base portion and a latch portion that is integrally connected to the base portion by a shank portion. A handle portion is also carried by the shank portion contiguous to the latch portion for deflecting the shank portion as a cantilever beam to move the latch portion to a released position.
Inventors
- 👤 V Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:28
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/06; Y; Y10; Y10S; Y10S292/00; Y10S292/38; Y10T; Y10T292/00; Y10T292/08; Y10T292/0894; Y10T292/0895; Y10T292/0902
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
184 words
A latch having a closure member or the like, said latch comprising a latch member formed from a resilient plastic material and having a base portion adapted to be secured to a first member, a shank portion integrally connected to said base portion and extending in cantilevered fashion therefrom, a cross head formed integrally at the other end of said shank portion, one part of said cross head comprising a latching portion adapted to coact with a keeper fixed to a second member for securing the first and second members together, the other part of said cross head forming a handle portion, and transversely extending ribs formed on said handle portion of said cross head for providing a gripping surface for resilient cantilevered deflection of said shank portion upon the application of pressure to said handle portion for movement of said latch portion from a latched position to a released position and the return to its latched position upon removal of said pressure, said shank portion being offset adjacent said latching portion for providing a clearance between said shank portion and the cooperating keeper.
Claim 2
Dependent Claim
184 words
A latch having a closure member or the like, said latch comprising a latch member formed from a resilient plastic material and having a base portion adapted to be secured to a first member, a shank portion integrally connected to said base portion and extending in cantilevered fashion therefrom, a cross head formed integrally at the other end of said shank portion, one part of said cross head comprising a latching portion adapted to coact with a keeper fixed to a second member for securing the first and second members together, the other part of said cross head forming a handle portion, and transversely extending ribs formed on said handle portion of said cross head for providing a gripping surface for resilient cantilevered deflection of said shank portion upon the application of pressure to said handle portion for movement of said latch portion from a latched position to a released position and the return to its latched position upon removal of said pressure, said shank portion being offset adjacent said latching portion for providing a clearance between said shank portion and the cooperating keeper.
Claim 3
Dependent Claim
44 words
A latch as set forth in claim 1, wherein the latching portion terminates in an arcuate nose adapted to cooperate with the keeper and to be cammed by the keeper to its released position upon subsequent movement of the first and second members together.
References Cited (Backward Citations)
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Cited
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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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |