US3728752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearings for bridges and similar structures
Assignee: Gutehoffnungshutte Sterkrade AG
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Filing: 1971-02-22
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Granted: 1973-04-24
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Expires: 1991-02-22
Abstract
Abstract A slidable-tiltable bearing arrangement is comprised of a deformable resilient load transmitting bearing pad positioned within a casing which encloses the bottom and a part of the lateral surface of the pad. The upper bearing surface of the pad extends upwardly above the edge of the casing and a seal, preferably formed as a reinforced ring-shaped body of polytetrafluoroethylene, extends about and confines the upper edge of the pad against deformation. Further, the upper surface of the pad acts as a slide surface and depression or recesses are formed in it to hold a lubricant which aids in the sliding action. The casing may be formed with a separate side wall and base or the side wall and base may be formed as an integral member.
Inventors
- 👤 W Andra
- 👤 H Thul
- 👤 L Wintergerst
- 👤 E Beyer
- 👤 F Leonhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:18
CPC Classifications
E; E01; E01D; E01D19/00; E01D19/04; E01D19/042; E01D19/047
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
19 words
A bearing arrangement, as set forth in claim 1, characterized in that said side wall has a cylindrical configuration.
Claim 2
Dependent Claim
19 words
A bearing arrangement, as set forth in claim 1, characterized in that saiD side wall has a polygonal configuration.
Claim 3
Dependent Claim
44 words
A bearing arrangement, as set forth in claim 1, characterized in that at least one of the upper and lower bearing surfaces of said bearing pad has depressions formed therein for receiving a lubricant which aids in the sliding action on the bearing surfaces.
Claim 4
Dependent Claim
34 words
A bearing arrangement, as set forth in claim 1, characterized in that the upper surface of said seal located in the plane of the upper surface of said bearing plate has depressions formed therein.
Claim 5
Dependent Claim
29 words
A bearing arrangement, as set forth in claim 1, characterized in that said seal is formed of a reinforced deformable resilient material sufficient for laterally containing said bearing pad.
Claim 6
Dependent Claim
18 words
A bearing arrangement, as set forth in claim 6, characterized in that said seal is formed of polytetrafluoroethylene.
Claim 7
Dependent Claim
41 words
A bearing arrangement, as set forth in claim 6, characterized in that at least one reinforcing insert disposed within said seal for assisting in retaining the upper portion of said bearing pad extends upwardly above said side wall within said seal.
Claim 8
Dependent Claim
32 words
A bearing arrangement, as set forth in claim 1, characterized in that said side member is disposed in form fitting engagement with the lateral surface of said bearing pad and said seal.
Claim 9
Dependent Claim
26 words
A bearing arrangement, as set forth in claim 9, characterized in that said side wall is integrally attached to and extends upwardly from said bottom member.
Claim 10
Dependent Claim
50 words
A bearing arrangement, as set forth in claim 9, characterized in that said side wall is separate from said bottom member and extends from a location below the lower bearing surface of said bearing pad to a location adjacent to and below the upper bearing surface of said bearing pad.
Claim 11
Dependent Claim
64 words
A bearing arrangement, as set forth in claim 11, characterized in that a step is formed about the circumferential upper edge of said bearing pad forming a shoulder spaced below the upper bearing surface of said bearing pad, and a ring-shaped ledge secured to and extending inwardly from said side wall and bearing on said shoulder formed by the step in said bearing pad.
Claim 12
Dependent Claim
37 words
A bearing arrangement, as set forth in claim 12, characterized in that the area of said upper bearing surface of said bearing pad is smaller than the area of the lower bearing surface of said bearing pad.
Claim 13
Dependent Claim
60 words
A bearing arrangement, as set forth in claim 11, characterized in that a seal member is disposed between and in sealing engagement with a portion of the inner surface of said side wall and a portion of the outer edge of the upper surface of said bottom member for providing a seal between said separate side wall and bottom member.
Claim 14
Dependent Claim
35 words
A bearing arrangement, as set forth in claim 14, characterized in that said seal located between said side wall and said bottom member is in sealing engagement with the adjacent surfaces of said bearing pad.
Claim 15
Dependent Claim
39 words
A bearing arrangement, as set forth in claim 1, characterized in that said bearing pad comprises a lower plate-like member and a superposed upper plate-like member which has a thickness less than the thickness of said bottom plate-like member.
Claim 16
Dependent Claim
63 words
A bearing arrangement, as set forth in claim 1, characterized in that an upper bearing plate is in engagement with the upper bearing surface of said bearing pad, a lower bearing plate being in contacting engagement with the lower bearing surface of said bearing pad, and a friction-reducing coating being deposited on each of the surfaces of said upper and lower bearing plate.
Claim 17
Dependent Claim
21 words
A bearing arrangement, as set forth in claim 17, characterized in that said friction-reducing coating is formed of a metallic material.
Claim 18
Dependent Claim
22 words
A bearing arrangement, as set forth in claim 17, characterized in that said friction-reducing coating is formed of a synthetic plastic material.
Claim 19
Dependent Claim
36 words
A bearing arrangement, as set forth in claim 1, characterized in that at least one of the upper and lower bearing surfaces of said bearing pad has a friction-reducing coating of synthetic plastic material formed thereon.
References Cited (Backward Citations)
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Cited
US2680259A
Cited
DE1157640B
Cited
DE1202813B
Cited
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Cited
US3390854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |