US3979994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pivot pin including detachable pilot section
Assignee: Caterpillar Inc
•
Filing: 1975-01-23
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Granted: 1976-09-14
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Expires: 1995-01-23
Abstract
Abstract A mobile construction machine comprises a pair of working components pivotally connected together by a pin. The pin has a first stop means secured on a first end thereof to prevent longitudinal movement of the pin in a first direction relative to the components and a second stop means releasably attached to a second end of the pin to prevent it from moving in the opposite direction. Upon removal of the second stop means from the pin, the pin may be removed from aligned bores formed through the components to disconnect the same. Upon reinstallation of the pin, a conically shaped self-centering member is attached to the pin in lieu of the second stop means to facilitate reinsertion of the pin into the bores formed in the components.
Inventors
- 👤 Gerard M. G. J. Collignon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:38
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/045; E; E02; E02F; E02F9/00; E02F9/006; F16B; F16B21/00; F16B21/10; F16C2350/00; F16C2350/26; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10T; Y10T29/00; Y10T29/53; Y10T29/53909; Y10T29/53913; Y10T403/00; Y10T403/16; Y10T403/1616; Y10T403/1624; Y10T403/32; Y10T403/32606; Y10T403/32861; Y10T403/32893; Y10T403/32909
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
175 words
A self-centering combined pivot pin and tool for pivotally connecting a pair of working components of a machine together comprising a cylindrical body portion and a conically shaped self-centering means releasably attached to one end of said body portion by releasable fastening means, said self-centering means comprising a frustoconically-shaped member disposed on a centerline axis thereof and having a top and a base, said base disposed on the one end of said body portion and substantially coextensive therewith, said member extending outwardly from the one end of said body portion, with the top of said member lying in a plane substantially parallel relative to the base of said member and relative to the one end of said body portion and said releasable fastening means constituting a cap screw threadably attaching said member to the one end of said body portion, said cap screw inserted at the top of said member to threadably attach said member to said body portion via a bore axially disposed along the centerline axis of said member and said body portion.
Claim 2
Dependent Claim
175 words
A self-centering combined pivot pin and tool for pivotally connecting a pair of working components of a machine together comprising a cylindrical body portion and a conically shaped self-centering means releasably attached to one end of said body portion by releasable fastening means, said self-centering means comprising a frustoconically-shaped member disposed on a centerline axis thereof and having a top and a base, said base disposed on the one end of said body portion and substantially coextensive therewith, said member extending outwardly from the one end of said body portion, with the top of said member lying in a plane substantially parallel relative to the base of said member and relative to the one end of said body portion and said releasable fastening means constituting a cap screw threadably attaching said member to the one end of said body portion, said cap screw inserted at the top of said member to threadably attach said member to said body portion via a bore axially disposed along the centerline axis of said member and said body portion.
Claim 3
Dependent Claim
41 words
The tool of claim 1 wherein a frustoconically-shaped surface is formed on the one end of said body portion to dispose the frustoconically-shaped surface of said body portion in matching and coincident relationship with outer surface portions of said frustoconically-shaped member.
Claim 4
Dependent Claim
105 words
The tool of claim 1 wherein said pivot pin further comprises stop means comprising an independent plate secured to an opposite end of said body portion and extending radially outwardly therefrom, and wherein said pivot pin is positioned by said stop means so that, upon removal of said member from said pin after insertion of said pin, the one end of said body portion lies flush with one of said components to thereby enable a second plate to be attached to the one end of said body portion of said pin by a cap screw to secure said body portion with respect to said components.
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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) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |