US3787098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Track link with eccentric seal counterbore
Assignee: Fiat Allis Europe SpA
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Filing: 1972-11-16
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Granted: 1974-01-22
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Expires: 1992-11-16
Abstract
Abstract The counterbore of the side bar of an endless track link is formed in eccentric relation to the pin in such a manner that as the usual pin and bushing wear occurs, the eccentricity is reduced. This construction allows the radial seal between the counterbore and bushing to be effective over a greater portion of the wear life of the pin and bushing connection.
Inventors
- 👤 B Orr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:59
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/088; B62D55/0887
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
44 words
A pivot structure for an endless link belt having a cylindrical bearing surface tending to wear on one side of its axis and an annular seal receiving portion formed in eccentric relation to said bearing surface whereby as the latter wears eccentricity is reduced.
Claim 2
Dependent Claim
44 words
A pivot structure for an endless link belt having a cylindrical bearing surface tending to wear on one side of its axis and an annular seal receiving portion formed in eccentric relation to said bearing surface whereby as the latter wears eccentricity is reduced.
Claim 3
Dependent Claim
38 words
The invention of claim 1 wherein said pivot structure comprises the side bar and pin for an endless track, wherein said pin presents said bearing surface and wherein said seal receiving portion comprises a counterbore in said bar.
Claim 4
Dependent Claim
114 words
In an endless belt of the type having adjoining links interconnected by an annular bushing secured to a side bar of one link and an annular pivot pin secured to the side bar of the adjoining link, the combination comprising: an annular recess in the side bar to which said pin is secured, the axis of said recess being spaced from the axis of said pin in the direction away from the side of said pin receiving the greatest wear during use, an annular end part on said bushing extending into said recess, and an annular seal in said recess having a radially facing sealing surface in sealing engagement with said annular end part.
Claim 5
Dependent Claim
114 words
In an endless belt of the type having adjoining links interconnected by an annular bushing secured to a side bar of one link and an annular pivot pin secured to the side bar of the adjoining link, the combination comprising: an annular recess in the side bar to which said pin is secured, the axis of said recess being spaced from the axis of said pin in the direction away from the side of said pin receiving the greatest wear during use, an annular end part on said bushing extending into said recess, and an annular seal in said recess having a radially facing sealing surface in sealing engagement with said annular end part.
Claim 6
Dependent Claim
87 words
In an endless belt of the type having pivotally interconnected pivot structures with mating annular bearing surfaces, the combination comprising: an annular sealing surface on one of said structures, and an annular seal mounted on the other of said structures in eccentric relation to said annular sealing surface whereby the radial dimension of said seal at one radial side thereof is less than the other side when the belt is new and the radial dimension at said one radial side increases as one said bearing surfaces wear.
Claim 7
Dependent Claim
87 words
In an endless belt of the type having pivotally interconnected pivot structures with mating annular bearing surfaces, the combination comprising: an annular sealing surface on one of said structures, and an annular seal mounted on the other of said structures in eccentric relation to said annular sealing surface whereby the radial dimension of said seal at one radial side thereof is less than the other side when the belt is new and the radial dimension at said one radial side increases as one said bearing surfaces wear.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |