Patent US3874041A successfully refreshed from Google Patents.
US3874041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fasteners
Assignee: Dzus Fastener Co Inc
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Filing: 1974-04-26
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Granted: 1975-04-01
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Expires: 1994-04-26
Abstract
Abstract This invention relates to a quick-release fastener for joining together two members, of the kind in which the shank of a stud passes through aligned openings in said members and cooperates by relative rotation with a receptacle assembly. A retaining bar within said receptacle cooperates with said stud and is biased away from said stud by one or more spring washers.
Inventors
- 👤 Howard J L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:27
CPC Classifications
F; F16; F16B; F16B5/00; F16B5/10; F16B21/00; F16B21/02; F16B21/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
242 words
A fastener receptacle for mounting in an aperture in a first part for releasably attaching the first part to a second part by means of a spiral cam fastener stud rotatably mounted in the second part, said fastener receptacle comprising: a housing made of resilient sheet metal formed with side panels extending downwardly along the sides of the housing and disposed around a central spring chamber with an end opening to receive the end of the fastener stud; two opposite side panels extending downwardly beyond the other side panels and formed at their ends with spring flanges for engaging the opposite sides of the aperture in the first part to secure the receptacle to said first part; receiving means in the housing including a retaining bar extending transversely across the center of the rEceptacle housing for releasable engagement with the spiral cam of the stud; retention means to prevent rotation of the receiving means with respect to the housing while retaining the receiving means inside the walls of the housing and permitting the receiving means to shift axially inside the walls of the housing and thereby follow the spiral cam surface in the stud when relative rotation occurs therebetween; and a spring positioned inside the housing between the receiving means and the base of the housing and engaging the receiving means for urging the retaining bar in a direction away from the spring flanges and toward the opposite end of the housing.
Claim 2
Dependent Claim
242 words
A fastener receptacle for mounting in an aperture in a first part for releasably attaching the first part to a second part by means of a spiral cam fastener stud rotatably mounted in the second part, said fastener receptacle comprising: a housing made of resilient sheet metal formed with side panels extending downwardly along the sides of the housing and disposed around a central spring chamber with an end opening to receive the end of the fastener stud; two opposite side panels extending downwardly beyond the other side panels and formed at their ends with spring flanges for engaging the opposite sides of the aperture in the first part to secure the receptacle to said first part; receiving means in the housing including a retaining bar extending transversely across the center of the rEceptacle housing for releasable engagement with the spiral cam of the stud; retention means to prevent rotation of the receiving means with respect to the housing while retaining the receiving means inside the walls of the housing and permitting the receiving means to shift axially inside the walls of the housing and thereby follow the spiral cam surface in the stud when relative rotation occurs therebetween; and a spring positioned inside the housing between the receiving means and the base of the housing and engaging the receiving means for urging the retaining bar in a direction away from the spring flanges and toward the opposite end of the housing.
Claim 3
Dependent Claim
59 words
The invention in accordance with claim 1 wherein the housing is formed into a box-like structure with four rectangularly arranged side panels, the receiving means including a plate being relatively flat, having a central opening to receive the end of the fastener stud, and rectangular in configuration so that relative rotation between the plate and the housing is prevented.
Claim 4
Dependent Claim
31 words
The invention in accordance with claim 1 wherein the spring is a plurality of leaf-type spring washers positioned inside the housing between the receiving means and the base of the housing.
Claim 5
Dependent Claim
32 words
The invention in accordance with claim 1 wherein a relatively flat spring shim is positioned around the spring flanges so that it can be positioned between the first member and the housing.
Claim 6
Dependent Claim
222 words
A fastener receptacle for mounting in an aperture in a first part for releasably attaching the first part to a second part by means of a spiral cam fastener stud mounted in the second part, said fastener receptacle comprising: a housing made of resilient sheet metal formed into a box-like structure with four rectangularly arranged side panels extending downwardly along the sides of the housing and disposed around a central spring chamber with an end opening to receive the end of the fastener stud, two of the opposite side panels extending downwardly beyond the other side panels and formed at their ends with spring flanges for engaging the opposite sides of the said aperture in the first part to secure the receptacle to said first part; a relatively flat rectangular plate positioned in said housing and having a central opening to receive the end of the fastener stud and formed with a retaining bar extending transversely across the center of said receptacle housing for releasable engagement with the spiral cam of the stud; and a plurality of leaf type spring washers positioned inside said housing between the said flat plate and the base of the housing and engaging said flat plate for urging said retaining bar in a direction away from said spring flanges and towards the opposite end of said housing.
Claim 7
Dependent Claim
222 words
A fastener receptacle for mounting in an aperture in a first part for releasably attaching the first part to a second part by means of a spiral cam fastener stud mounted in the second part, said fastener receptacle comprising: a housing made of resilient sheet metal formed into a box-like structure with four rectangularly arranged side panels extending downwardly along the sides of the housing and disposed around a central spring chamber with an end opening to receive the end of the fastener stud, two of the opposite side panels extending downwardly beyond the other side panels and formed at their ends with spring flanges for engaging the opposite sides of the said aperture in the first part to secure the receptacle to said first part; a relatively flat rectangular plate positioned in said housing and having a central opening to receive the end of the fastener stud and formed with a retaining bar extending transversely across the center of said receptacle housing for releasable engagement with the spiral cam of the stud; and a plurality of leaf type spring washers positioned inside said housing between the said flat plate and the base of the housing and engaging said flat plate for urging said retaining bar in a direction away from said spring flanges and towards the opposite end of said housing.
Claim 8
Dependent Claim
35 words
A fastener receptacle as set forth in claim 5 in which a relatively flat spring shim is positioned around said spring flanges so that it can be positioned between the first member and the housing.
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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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |