Patent US3561792A successfully refreshed from Google Patents.
US3561792A
Expired / Lapsed
US
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Rivet pivoted members and washers therefor
Assignee: Super Sagless Spring Corp
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Filing: 1969-01-07
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Granted: 1971-02-09
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Expires: 1989-01-07
Abstract
Abstract A pair of metal members are connected by a rivet, with a washer on the rivet and disposed between said pivoted members. The washer is made of synthetic plastic, resilient, good wearing, low friction bearing material. The washer has an annular outer portion from which an inner thinner or finned portion projects inwardly to center the rivet, thereby providing more space for lubricating oil. The outer annular portion of the washer is cupshaped or annularly sinuous to make the washer resilient. When used with a shouldered rivet, the centering finned portion centers on the smaller diameter portion of the rivet to prevent the rivet from becoming offset, as is the case with washers having a hole large enough to receive the large diameter part of the rivet. During the riveting process, the centering finned portion may be torn off by the shoulder of the rivet.
Inventors
- 👤 Izchak Cycowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:26
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/02; A47C1/022; A47C1/024; F; F16; F16B; F16B19/00; F16B19/04; F16B19/06; F16B43/00; F16B5/00; F16B5/04; F16C; F16C11/00; F16C11/04; Y; Y10; Y10S; Y10S411/00; Y10S411/904; Y10S411/908; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32819; Y10T403/32951; Y10T403/32959
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
194 words
In combination, a pair of members having aligned openings, a pivot passing through said openings, to pivotally connect said members, a washer interposed between said members, said washer having an outer annular portion, and an inner portion extending inwardly from said outer portion, and said washer being formed with a central opening, said inner portion of said washer being thinner than said outer portion and having centering means, said pivot passing through said opening in said washer, and said centering means of said washer centering said washer on said pivot, the opening in one of said members being of larger diameter than the opening in the other member, said pivot comprising a shoulder pivot having a portion of greater diameter and a portion of lesser diameter, said portions of greater and less diameter of said pivot being received in the greater and lesser diameter openings of said members, respectively, and said pivot having a shoulder between said portions of said pivot, contacting said inner portion of said washer, said centering means having means to center on the portion of lesser diameter of said pivot during assembly of said pivot with said members and washers.
Claim 2
Dependent Claim
194 words
In combination, a pair of members having aligned openings, a pivot passing through said openings, to pivotally connect said members, a washer interposed between said members, said washer having an outer annular portion, and an inner portion extending inwardly from said outer portion, and said washer being formed with a central opening, said inner portion of said washer being thinner than said outer portion and having centering means, said pivot passing through said opening in said washer, and said centering means of said washer centering said washer on said pivot, the opening in one of said members being of larger diameter than the opening in the other member, said pivot comprising a shoulder pivot having a portion of greater diameter and a portion of lesser diameter, said portions of greater and less diameter of said pivot being received in the greater and lesser diameter openings of said members, respectively, and said pivot having a shoulder between said portions of said pivot, contacting said inner portion of said washer, said centering means having means to center on the portion of lesser diameter of said pivot during assembly of said pivot with said members and washers.
Claim 3
Dependent Claim
26 words
The combination of claim 1, and means to anchor said portion of lesser diameter of said pivot to the member with the opening of lesser diameter.
Claim 4
Dependent Claim
26 words
The combination of claim 1, said outer portion having an inner diameter slightly greater than the diameter of the portion of larger diameter of the pivot.
Claim 5
Dependent Claim
257 words
In combination, a pair of members having aligned openings, a pivot passing through said openings, to pivotally connect said members, a washer interposed between said members, said washer having an outer annular portion, and an inner portion extending inwardly from said outer portion, and said washer being formed with a central opening, said inner portion of said washer being thinner than said outer portion and having centering means, said pivot passing through said opening in said washer, and said centering means of said washer centering said washer on said pivot, the height of said outer portion being greater than the thickness of said outer portion of the washer, and said washer being resilient in an axial direction, said inner portion comprising more than two tabs having inner rounded edges tangent to a circle of a diameter substantially equal to the diameter of the portion of the pivot on which the washer is centered, the opening in one of said members being of larger diameter than the opening in the other member, said pivot comprising a shoulder pivot having a portion of greater diameter and a portion of lesser diameter, said greater diameter and lesser diameter portions of said pivot being received in the greater and lesser diameter openings of said members, respectively, and said pivot having a shoulder between said portions of said pivot, contacting said inner portion of said washer, said centering means having means to center on the portion of lesser diameter of said pivot during assembly of said pivot with said members and washer.
Claim 6
Dependent Claim
257 words
In combination, a pair of members having aligned openings, a pivot passing through said openings, to pivotally connect said members, a washer interposed between said members, said washer having an outer annular portion, and an inner portion extending inwardly from said outer portion, and said washer being formed with a central opening, said inner portion of said washer being thinner than said outer portion and having centering means, said pivot passing through said opening in said washer, and said centering means of said washer centering said washer on said pivot, the height of said outer portion being greater than the thickness of said outer portion of the washer, and said washer being resilient in an axial direction, said inner portion comprising more than two tabs having inner rounded edges tangent to a circle of a diameter substantially equal to the diameter of the portion of the pivot on which the washer is centered, the opening in one of said members being of larger diameter than the opening in the other member, said pivot comprising a shoulder pivot having a portion of greater diameter and a portion of lesser diameter, said greater diameter and lesser diameter portions of said pivot being received in the greater and lesser diameter openings of said members, respectively, and said pivot having a shoulder between said portions of said pivot, contacting said inner portion of said washer, said centering means having means to center on the portion of lesser diameter of said pivot during assembly of said pivot with said members and washer.
Claim 7
Dependent Claim
15 words
The combination of claim 4, said tabs being inclined to the axis of said washer.
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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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |