Patent US3918754A successfully refreshed from Google Patents.
US3918754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastics fasteners
Assignee: ITW Ltd
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Filing: 1975-04-23
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Granted: 1975-11-11
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Expires: 1995-04-23
Abstract
Abstract A latch unit formed in one-piece of a resiliently flexible plastics material and comprising two body portions which are hinged to one another, and which are further hinged to a latch and a button respectively, the arrangement being such that the body portions can be folded to a position in which they can be inserted into and held by an aperture in a panel, manual actuation of the button then causing movement of the latch from an operative position to an inoperative position.
Inventors
- 👤 Stephen W Isbister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:40
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/06; Y; Y10; Y10S; Y10S292/00; Y10S292/38; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1051; Y10T292/1052; Y10T292/1056
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
83 words
A latch unit formed in one-piece of a resiliently flexible plastics material and comprising two body portions which are hinged to one another, and which are further hinged to a latch and a button respectively, the arrangement being such that the body portions can be folded to a position in which they can be inserted into and held by an aperture in a panel, manual actuation of the button then causing movement of the latch from an operative position to an inoperative position.
Claim 2
Dependent Claim
83 words
A latch unit formed in one-piece of a resiliently flexible plastics material and comprising two body portions which are hinged to one another, and which are further hinged to a latch and a button respectively, the arrangement being such that the body portions can be folded to a position in which they can be inserted into and held by an aperture in a panel, manual actuation of the button then causing movement of the latch from an operative position to an inoperative position.
Claim 3
Dependent Claim
58 words
A latch unit according to claim 1, in which the body portions in their folded position define a hollow generally elongate body, with the latch being generally parallel to the axis, the button being generally perpendicular thereto and at least partially closing one end of said hollow body, and the latch and the button directly abutting one another.
Claim 4
Dependent Claim
48 words
A latch unit according to claim 2, in which the button is formed with a stepped shoulder which can engage with that body portion carrying the latch to prevent the latch and the button becoming separated from one another when the body portions are in their folded position.
Claim 5
Dependent Claim
23 words
A latch unit according to claim 1, in which the body portions aRe semi-circular in end elevation and symmetrical about a longitudinally-extending plane.
Claim 6
Dependent Claim
30 words
A latch unit according to claim 4, in which each of the body portions is frusto-conical, their cross-sections increasing with increased distance from the hinge by which they are connected.
Claim 7
Dependent Claim
27 words
A latch unit according to claim 1, in which each of the body portions is formed with a flange for abutting one face of the apertured panel.
Claim 8
Dependent Claim
32 words
A latch unit according to claim 6, in which each of the body portions is formed with at least one resiliently flexible barb for abutting the other face of the apertured panel.
Claim 9
Dependent Claim
22 words
A latch unit according to claim 1, in which co-operating oblique cam surfaces are formed on both the button and the latch.
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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |