Patent US4593431A successfully refreshed from Google Patents.
US4593431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snap stud
Assignee: Truth Hardware Corp
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Filing: 1985-06-19
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Granted: 1986-06-10
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Expires: 2005-06-19
Abstract
Abstract A snap stud usable in window hardware, such as window operators and window hinges, for releasably pivotally interconnecting a pair of members. The snap stud has a stud extending from a first of the members and provided with an external peripheral groove which mounts a C-ring of spring music wire. The C-ring has a retention position partially extending beyond the periphery of the stud for overlying a second of the members and a compressed release position substantially entirely within the periphery of the stud, with the movement of the C-ring to the compressed release position occurring automatically in assembly and disassembly of said members.
Inventors
- 👤 Christopher T. Sandberg
- 👤 Gary F. Paulson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:26
CPC Classifications
E; E05; E05D; E05D15/00; E05D15/40; E05D15/44; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/148; Y; Y10; Y10S; Y10S16/00; Y10S16/40; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32861; Y10T403/32893; Y10T403/32901; Y10T403/60
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
223 words
A releasable connection means comprising: a snap stud for mounting on a first member; and a second member having a through opening and defining at an end thereof an annular edge having a substantially right angle cross section, said snap stud extending through said opening for releasably holding said second member in pivotal relation with said first member, said snap stud comprising a generally cylindrical stud having an external peripheral groove intermediate the ends of the stud, and a C-ring of spring wire defining an annular centerline positioned in said peripheral groove and having a pair of spaced-apart ends, said C-ring having inner and outer diameters selected to have a part thereof in said peripheral groove and a part extending beyond the stud periphery when said C-ring is in a retention position, the diameter of said edge of the opening of the second member being less than the outer diameter of the C-ring and greater than the diameter of said annular centerline of the C-ring when the C-ring is in said retention position, and said peripheral groove having a depth to enable compression of the C-ring to a release position in which substantially all of the C-ring is in said peripheral groove and which enables disassembly of said pair of members by pulling one member away from the other axially of the stud.
Claim 2
Dependent Claim
223 words
A releasable connection means comprising: a snap stud for mounting on a first member; and a second member having a through opening and defining at an end thereof an annular edge having a substantially right angle cross section, said snap stud extending through said opening for releasably holding said second member in pivotal relation with said first member, said snap stud comprising a generally cylindrical stud having an external peripheral groove intermediate the ends of the stud, and a C-ring of spring wire defining an annular centerline positioned in said peripheral groove and having a pair of spaced-apart ends, said C-ring having inner and outer diameters selected to have a part thereof in said peripheral groove and a part extending beyond the stud periphery when said C-ring is in a retention position, the diameter of said edge of the opening of the second member being less than the outer diameter of the C-ring and greater than the diameter of said annular centerline of the C-ring when the C-ring is in said retention position, and said peripheral groove having a depth to enable compression of the C-ring to a release position in which substantially all of the C-ring is in said peripheral groove and which enables disassembly of said pair of members by pulling one member away from the other axially of the stud.
Claim 3
Dependent Claim
18 words
A snap stud as defined in claim 1 wherein said spring is formed from round spring music wire.
Claim 4
Dependent Claim
29 words
A snap stud as defined in claim 2 wherein said external peripheral groove on the stud has a depth substantially equal to the diameter of the spring music wire.
Claim 5
Dependent Claim
64 words
A snap stud as defined in claim 1 wherein said external peripheral groove defines a stud section of reduced diameter, and the ends of said C-ring are spaced apart a distance less than the diameter of said stud section whereby the C-ring is forced onto the stud section when placed in said external peripheral groove, in assembly, and is thereafter retained in said groove.
Claim 6
Dependent Claim
33 words
A snap stud as defined in claim 4 wherein said ends of the C-ring are shaped to facilitate expansion of the C-ring as the latter is forced onto the stud section in assembly.
Claim 7
Dependent Claim
30 words
A snap stud as defined in claim 1 wherein said second member at the opposite end of the opening defines an annular edge having a substantially right angle cross section.
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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) | 1989-06-09 | 1989-12-09 | 1990-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-09 | 1993-12-09 | 1994-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-09 | 1997-12-09 | 1998-06-10 | $7700.00 | Window Closed / Lapsed |