US3776580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catches
Assignee: Micro and Precision Mouldings Cheltenham Ltd
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Filing: 1972-02-28
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Granted: 1973-12-04
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Expires: 1992-02-28
Abstract
Abstract A catch and a striker therefor are each in the form of a onepiece plastics moulding. The catch has a back fixing flange from which a re-entrant tubular formation projects, an inturned portion of such formation being longitudinally slotted whereby it is subdivided into resiliently flexible tongues. The tubular formation has a central bore providing a taper socket for reception of a tapering stem of the striker. The striker has a fixing flange and a catch-engaging stem is offset from and projects generally parallel to the striker flange. A headed formation of the stem results in the striker being gripped by the resilient catch tongues, and this grip and fitting of the tapering stem in the taper socket results in firm lateral location of the striker.
Inventors
- 👤 J Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:20
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/06; E05C19/063; E05C19/066; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0814; Y10T292/0817
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
114 words
A catch comprising an intergral one-piece body having a fixing flange aNd a tubular formation which is open at both ends and projects forwardly from the flange to provide a central taper socket, and a keeper having a tapering striker projection which can be received in the taper socket and retained therein with a grip which can be freed by pulling the keeper and the catch body apart, said tubular formation being re-entrant to provide a continuous outer wall surrounding and spaced from an inwardly directed portion which is slotted to provide a plurality of resiliently flexible tongues for engagement with the striker projection so that the latter is restrained in all lateral directions.
Claim 2
Dependent Claim
114 words
A catch comprising an intergral one-piece body having a fixing flange aNd a tubular formation which is open at both ends and projects forwardly from the flange to provide a central taper socket, and a keeper having a tapering striker projection which can be received in the taper socket and retained therein with a grip which can be freed by pulling the keeper and the catch body apart, said tubular formation being re-entrant to provide a continuous outer wall surrounding and spaced from an inwardly directed portion which is slotted to provide a plurality of resiliently flexible tongues for engagement with the striker projection so that the latter is restrained in all lateral directions.
Claim 3
Dependent Claim
46 words
A catch according to claim 1 and said keeper, wherein the keeper is of one-piece moulded form with a fixing flange spaced from and generally parallel to the striker projection which has a headed taper stem for engagement in the taper socket of the catch body.
Claim 4
Dependent Claim
38 words
A catch and striker according to claim 2, wherein an upstanding support web of the keeper is joined at one edge to the keeper flange and the taper stem projects from one side face of the support web.
Claim 5
Dependent Claim
23 words
A catch according to claim 2, wherein the catch body is moulded from an acetyl resin and the keeper is a nylon moulding.
Claim 6
Dependent Claim
33 words
A catch according to claim 1 and said striker, wherein the bore of the tubular formation of the catch body is of waisted shape generally complementary to the shape of the striker projection.
Claim 7
Dependent Claim
32 words
A catch according to claim 5, wherein said waisted shape comprises two frusto-conical portions disposed coaxially with their smaller diameter ends adjoining and the outer of such portions providing said taper socket.
Claim 8
Dependent Claim
39 words
A catch according to claim 6, wherein the taper socket portion of said bore has a slightly greater cone angle than that of the corresponding tapering portion of the striker projection in order to provide the desired resilient grip.
Claim 9
Dependent Claim
35 words
A catch according to claim 7, wherein said cone angle of the bore is of the order of 30* and that of the corresponding portion of the striker projection is of the order of 22*.
Claim 10
Dependent Claim
100 words
A catch and striker combination wherein the catch is a one-piece plastics moulding comprising a fixing flange and an open-ended re-entrant tubular formation with an inturned portion which is longitudinally slotted to provide resiliently flexible tongues to grip the striker and which has a central bore providing a taper socket, and said striker is also a one-piece moulding comprising a fixing flange and a catch-engaging stem offset from and projecting generally parallel to the striker flange, said stem having a headed form so that it is gripped by said resilient tongues and a tapering stem which fits said taper socket.
Claim 11
Dependent Claim
100 words
A catch and striker combination wherein the catch is a one-piece plastics moulding comprising a fixing flange and an open-ended re-entrant tubular formation with an inturned portion which is longitudinally slotted to provide resiliently flexible tongues to grip the striker and which has a central bore providing a taper socket, and said striker is also a one-piece moulding comprising a fixing flange and a catch-engaging stem offset from and projecting generally parallel to the striker flange, said stem having a headed form so that it is gripped by said resilient tongues and a tapering stem which fits said taper socket.
Claim 12
Dependent Claim
29 words
A catch and striker combination according to claim 9, wherein said inturned portion of the catch has four equiangularly arranged longitudinal slots providing four symmetrically arranged resiliently flexible tongues.
Claim 13
Dependent Claim
65 words
A catch and striker according to claim 9, wherein the flange of the keeper is cut away on the side towards which the stem thereof projects to provide, in plan view, a generally U-shaped flange with the stem mounted on the intermediate limb of the U and projecting centrally between the side limbs of the U, which side limbs are provided with screw fixing holes.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |