US3756115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic rivet
Assignee: FASTWAY FASTENERS
•
Filing: 1971-12-03
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Granted: 1973-09-04
•
Expires: 1991-12-03
Abstract
Abstract A plastic rivet is disclosed having a head and a shank, comprising portions which are separated from each other by a relatively wide slot which extends from near the head of the rivet to near the end of the shank and which facilitates entry of the shank into holes in panels which are to be secured together by the rivet. Such entry is further facilitated by reason of the provision of flattened surfaces on the shank portions which extend perpendicularly to the walls of said slot, and by the conical conformation of the ends of the shank portions. The holding power of the rivet is increased by the provision of angled shoulders or lands at the upper ends of said conical conformations.
Inventors
- 👤 J Schuplin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:09
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/06; F16B21/08; F16B21/086
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
238 words
In a plastic rivet of the character described, a head, a shank extending from said head, said shank comprising spaced legs forming an elongated slot or opening therebetween extending from said head to a point spaced from the end of said shank, said legs being defined, in part, by flat surfaces lying in planes substantially perpendicular to the walls of said slot or opening, and parallel with the axis of said shank, the upper portions of said legs being further defined by conical surfaces which are intersected by said flat surfaces, and the lower portions of said legs being further defined by conical surfaces which are intersected by said flat surfaces and which are in inverted relation to said first-named conical surfaces, said shank having a second slot which extends from said point to the end of the shank and which is substantially narrower than said first slot, shoulders or lands provided at the junction between said first and second conical surfaces, said shoulders or lands extending circumferentially of said conical surfaces, each shoulder or land consisting of angularly related portions sloped or inclined downwardly in a direction away from said head, said shank being provided at the upper ends of said second-named conical surfaces with cylindrical surfaces which are concentric with the axis of said shank, each of said cylindrical surfaces consisting of portions which are angularly related to each other and extend to said flat surfaces.
Claim 2
Dependent Claim
238 words
In a plastic rivet of the character described, a head, a shank extending from said head, said shank comprising spaced legs forming an elongated slot or opening therebetween extending from said head to a point spaced from the end of said shank, said legs being defined, in part, by flat surfaces lying in planes substantially perpendicular to the walls of said slot or opening, and parallel with the axis of said shank, the upper portions of said legs being further defined by conical surfaces which are intersected by said flat surfaces, and the lower portions of said legs being further defined by conical surfaces which are intersected by said flat surfaces and which are in inverted relation to said first-named conical surfaces, said shank having a second slot which extends from said point to the end of the shank and which is substantially narrower than said first slot, shoulders or lands provided at the junction between said first and second conical surfaces, said shoulders or lands extending circumferentially of said conical surfaces, each shoulder or land consisting of angularly related portions sloped or inclined downwardly in a direction away from said head, said shank being provided at the upper ends of said second-named conical surfaces with cylindrical surfaces which are concentric with the axis of said shank, each of said cylindrical surfaces consisting of portions which are angularly related to each other and extend to said flat surfaces.
Claim 3
Dependent Claim
20 words
A rivet, as defined in claim 1, wherein said shoulders are inclined downwardly and inwardly toward said first-named conical surfaces.
Claim 4
Dependent Claim
223 words
In a plastic rivet of the character described, a head, a shank extending from said head, said shank comprising spaced legs forming an elongated slot or opening therebetween extending from said head to a point spaced from the end of said shank, said legs being defined, in part, by flat surfaces lying in planes substantially perpendicular to the walls of said slot or opening, and parallel with the axis of said shank, the upper portions of said legs being further defined by conical surfaces which are intersected by said flat surfaces, and the lower portions of said legs being further defined by conical surfaces which are intersected by said flat surfaces and which are in inverted relation to said first-named conical surfaces, said shank having a second slot which extends from said point to the end of the shank and which is substantially narrower than said first slot, shoulders or lands provided at the junction between said first and second conical surfaces, said shoulders or lands extending circumferentially of said conical surfaces, each shoulder or land consisting of angularly related portions sloped or inclined downwardly in a direction away from said head, said shank being provided at the upper ends of said second-named conical surfaces with cylindrical surfaces which are concentric with the axis of said shank and extend to said flat surfaces.
Claim 5
Dependent Claim
223 words
In a plastic rivet of the character described, a head, a shank extending from said head, said shank comprising spaced legs forming an elongated slot or opening therebetween extending from said head to a point spaced from the end of said shank, said legs being defined, in part, by flat surfaces lying in planes substantially perpendicular to the walls of said slot or opening, and parallel with the axis of said shank, the upper portions of said legs being further defined by conical surfaces which are intersected by said flat surfaces, and the lower portions of said legs being further defined by conical surfaces which are intersected by said flat surfaces and which are in inverted relation to said first-named conical surfaces, said shank having a second slot which extends from said point to the end of the shank and which is substantially narrower than said first slot, shoulders or lands provided at the junction between said first and second conical surfaces, said shoulders or lands extending circumferentially of said conical surfaces, each shoulder or land consisting of angularly related portions sloped or inclined downwardly in a direction away from said head, said shank being provided at the upper ends of said second-named conical surfaces with cylindrical surfaces which are concentric with the axis of said shank and extend to said flat surfaces.
Claim 6
Dependent Claim
20 words
A rivet, as defined in claim 3, wherein said shoulders are inclined downwardly and inwardly tOward said first-named conical surfaces.
References Cited (Backward Citations)
US2104239A
Cited
US2229996A
Cited
US2420826A
Cited
US2531911A
Cited
US2788047A
Cited
US2956605A
Cited
US2936805A
Cited
US3424051A
Cited
US3550219A
Cited
US3552696A
Cited
US3574899A
Cited
DE2049476A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |