Patent US3784240A successfully refreshed from Google Patents.
US3784240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Panel fastener
Assignee: Kason Industries Inc
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Filing: 1972-06-23
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Granted: 1974-01-08
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Expires: 1992-06-23
Abstract
Abstract This panel fastener comprises a casing having aligned bearing openings journalling oppositely extending aligned hubs of a circular cam. The hubs are eccentrically located relative to the axis of the cam. A polygonal central hole through said hubs and cam serve to receive a wrench to turn the cam. The cam has oppositely extending wings substantially diametrically opposed to said hubs. Said wings and cam have cut away means to cradle a curved friction spring clip. On the cam is a panel latch hook having a hole to rotatably receive the cam. About 270* of the hole in the hook, contacts the cam with a rotary fit. The remaining 90* of the hole is cornered with a curved corner edge of reduced radius to facilitate the unflexed spring clip to pass into the cornered portion of the hole in the hook, so that as the cam is thereafter rotated relative to the hook, the spring clip is flexed to frictionally press against the inner edge of the hole in the hook, to prevent looseness between the cam and hook.
Inventors
- 👤 I Berkowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:34
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; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0911; Y10T292/0913; Y10T292/0914; Y10T292/0915; Y10T403/00; Y10T403/60
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
180 words
A panel hook fastener assembly comprising a casing, a cam having a part circular outer edge, means to mount said cam on said casing about an axis offset from the axis of said edge, a panel hook fastener member hAving an opening rotatably receiving said cam, spring friction means interposed between said cam and the inner edge of the opening in said member, and wrench engaging means on said cam for rotating the cam, said cam having an outwardly opening recess, said spring means being cradled in said recess, said cam having a lug projecting radially outwardly into said recess, said spring means comprising a C-shaped spring clip straddling said lug with end edges of the clip extending inwardly toward each other and disposed on opposite sides of said lug, said opening in said hook fastener member having a radially outwardly extending notch, a portion of said spring clip projecting into said notch when said recess and notch are aligned to frictionally maintain the cam and panel hook fastener together upon thereafter rotating said cam relative to said fastener member.
Claim 2
Dependent Claim
180 words
A panel hook fastener assembly comprising a casing, a cam having a part circular outer edge, means to mount said cam on said casing about an axis offset from the axis of said edge, a panel hook fastener member hAving an opening rotatably receiving said cam, spring friction means interposed between said cam and the inner edge of the opening in said member, and wrench engaging means on said cam for rotating the cam, said cam having an outwardly opening recess, said spring means being cradled in said recess, said cam having a lug projecting radially outwardly into said recess, said spring means comprising a C-shaped spring clip straddling said lug with end edges of the clip extending inwardly toward each other and disposed on opposite sides of said lug, said opening in said hook fastener member having a radially outwardly extending notch, a portion of said spring clip projecting into said notch when said recess and notch are aligned to frictionally maintain the cam and panel hook fastener together upon thereafter rotating said cam relative to said fastener member.
Claim 3
Dependent Claim
29 words
The combination of claim 1, a portion of said spring between said end edges, in the unflexed condition of said spring, projecting radially beyond said recess in said cam.
Claim 4
Dependent Claim
109 words
The combination of claim 2, said opening in said panel hook fastener member having a part circular inner edge rotatably engaging the part circular part of the cam, and said notch forming edge portions tangent to said part circular inner edge and out of contact with said cam, to facilitate insertion of the spring in unflexed condition into said recess and notch when said recess and notch are aligned, to permit flexing of said spring, upon thereafter rotating said cam relative to said panel book fastener member, as said spring is moved into engagement with the part circular inner edge of the opening in said panel hook fastener member.
Claim 5
Dependent Claim
68 words
The combination of claim 3, said part circular edge portion of said opening in said member being substantially 270* in angular extent, the remaining substantially 90* angular extent of said edge of said opening comprising said notch, said notch being squared off and formed with a corner curve of smaller radius than the radius of said 270* portion of said inner edge of said opening in said member.
Claim 6
Dependent Claim
14 words
The combination of claim 1, said C-shaped spring means comprising a metal spring clip.
Claim 7
Dependent Claim
17 words
The combination of claim 5, and means on said cam to rotate said C-shaped spring clip therewith.
Claim 8
Dependent Claim
21 words
The combination of claim 6, said spring clip, in normal unflexed condition, extending radially beyond the circular edge of said cam.
Claim 9
Dependent Claim
61 words
The combination of claim 7 said opening in said panel hook member being outwardly extending, permitting the portion of the C-shaped spring which extends radially beyond said cam to be received in said notch of the opening in said member and in said recess when said notch and recess are aligned to facilitate assembly of said cam and member and spring.
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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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |