US3703014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tiltable bearing means, especially for bridges
Assignee: Kober AG Glarus
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Filing: 1971-02-02
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Granted: 1972-11-21
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Expires: 1991-02-02
Abstract
Abstract This invention relates to bearing means, especially for heavy loads such as bridges. A piston means on which the load bears is held in a cylinder which is also filled with pressure material. The surface of the piston which faces the pressure material has such a shape that the piston height, relative to a central axis, increases from said axis toward the periphery of the piston whereby such pressure material facing surface of the piston may, for example, have a concave shape, a stair-step shape, a hollow cone shape, or any other shape providing the smallest piston height at the location of said axis and a larger piston height at the piston periphery.
Inventors
- 👤 Waldemar Koester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:24
CPC Classifications
E; E01; E01D; E01D19/00; E01D19/04; E01D19/042; E01D19/047
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
221 words
In a tiltable bearing for supporting a load on a substructure wherein piston means having a central axis, an outer wall and two end faces opposite each other are movably supported in space confining means, and wherein a yielding pressure material is located in said space confining means between said piston means and part of said space confining means, the improvement compriSing upper and lower space confining pan means, said piston means having a height which increases from said central axis toward said outer wall of the piston means so that both end faces of said piston means have a shaped surface facing said pressure material in its respective pan means, whereby said end faces are substantially mirror-symmetrical relative to each other, said outer wall of the piston means and the space confining means being dimensioned relative to each other so that the outer wall of the piston means is movably inserted into the upper and lower pan means, said piston means closing an upper and a lower chamber between each piston end face and the respective pan means, said piston means being capable of yielding, whereby a load applied to the bearing presses the outer piston wall laterally outwardly against both space confining pan means in a sealing manner to confine said pressure material in said upper and lower chambers.
Claim 2
Dependent Claim
221 words
In a tiltable bearing for supporting a load on a substructure wherein piston means having a central axis, an outer wall and two end faces opposite each other are movably supported in space confining means, and wherein a yielding pressure material is located in said space confining means between said piston means and part of said space confining means, the improvement compriSing upper and lower space confining pan means, said piston means having a height which increases from said central axis toward said outer wall of the piston means so that both end faces of said piston means have a shaped surface facing said pressure material in its respective pan means, whereby said end faces are substantially mirror-symmetrical relative to each other, said outer wall of the piston means and the space confining means being dimensioned relative to each other so that the outer wall of the piston means is movably inserted into the upper and lower pan means, said piston means closing an upper and a lower chamber between each piston end face and the respective pan means, said piston means being capable of yielding, whereby a load applied to the bearing presses the outer piston wall laterally outwardly against both space confining pan means in a sealing manner to confine said pressure material in said upper and lower chambers.
Claim 3
Dependent Claim
221 words
In a tiltable bearing for supporting a load on a substructure wherein piston means having a central axis, an outer wall and two end faces opposite each other are movably supported in space confining means, and wherein a yielding pressure material is located in said space confining means between said piston means and part of said space confining means, the improvement compriSing upper and lower space confining pan means, said piston means having a height which increases from said central axis toward said outer wall of the piston means so that both end faces of said piston means have a shaped surface facing said pressure material in its respective pan means, whereby said end faces are substantially mirror-symmetrical relative to each other, said outer wall of the piston means and the space confining means being dimensioned relative to each other so that the outer wall of the piston means is movably inserted into the upper and lower pan means, said piston means closing an upper and a lower chamber between each piston end face and the respective pan means, said piston means being capable of yielding, whereby a load applied to the bearing presses the outer piston wall laterally outwardly against both space confining pan means in a sealing manner to confine said pressure material in said upper and lower chambers.
Claim 4
Dependent Claim
221 words
In a tiltable bearing for supporting a load on a substructure wherein piston means having a central axis, an outer wall and two end faces opposite each other are movably supported in space confining means, and wherein a yielding pressure material is located in said space confining means between said piston means and part of said space confining means, the improvement compriSing upper and lower space confining pan means, said piston means having a height which increases from said central axis toward said outer wall of the piston means so that both end faces of said piston means have a shaped surface facing said pressure material in its respective pan means, whereby said end faces are substantially mirror-symmetrical relative to each other, said outer wall of the piston means and the space confining means being dimensioned relative to each other so that the outer wall of the piston means is movably inserted into the upper and lower pan means, said piston means closing an upper and a lower chamber between each piston end face and the respective pan means, said piston means being capable of yielding, whereby a load applied to the bearing presses the outer piston wall laterally outwardly against both space confining pan means in a sealing manner to confine said pressure material in said upper and lower chambers.
Claim 5
Dependent Claim
40 words
The tiltable bearing according to claim 1, wherein said outer wall of the piston means has a groove extending all around the piston means, which groove facilitates the lateral, outward pressing of the outer piston wall and thus the sealing.
Claim 6
Dependent Claim
16 words
The tiltable bearing according to claim 1, wherein said space confining means are made of steel.
Claim 7
Dependent Claim
21 words
The tiltable bearing according to claim 1, wherein said shaped surfaces of the piston means facing said pressure material are concave.
Claim 8
Dependent Claim
24 words
The tiltable bearing according to claim 1, wherein said shaped surfaces of the piston means facing said pressure material have a stair step configuration.
Claim 9
Dependent Claim
23 words
The tiltable bearing according to claim 1, wherein said shaped surfaces of the piston means facing said pressure material have a conical configuration.
Claim 10
Dependent Claim
77 words
The tiltable bearing according to claim 1, wherein said space confining upper and lower pan means each have a substantially upright side wall and a bottom wall, said bottom wall having a configuration corresponding to the shaped surface of said piston means whereby spacings of uniform height are provided between said bottom wall and said shaped surfaces of the piston means facing said pressure material, said uniform height extending over the entire diameter of the piston means.
Claim 11
Dependent Claim
32 words
The tiltable bearing according to claim 7, further comprising an insert in said confining means, said insert resting on said bottom wall and having a shaped upper surface for providing said spacing.
Claim 12
Dependent Claim
81 words
The tiltable bearing according to claim 1, wherein said space confining means have substantially upright side wall means and a bottom wall, said bottom wall facing said shaped surface of the piston means having a configuration so that a spacing is provided between the piston means and the bottom wall for said pressure material, said spacing having a height which is larger in portions adjacent to said outer wall of the piston means than in portions closer to said central axis.
Claim 13
Dependent Claim
40 words
The tiltable bearing according to claim 1, wherein said upper and lower pan means are spaced from each other to form a gap between the upper and lower pan means, said outer wall of the piston means bridging said gap.
Claim 14
Dependent Claim
33 words
The tiltable bearing according to claim 10, further comprising a flexible sealing sleeve which surrounds part of said upper pan means and part of said lower pan means to cover said gap therebetween.
Claim 15
Dependent Claim
45 words
The tiltable bearing according to claim 11, wherein said flexible sealing sleeve has an upper edge with means for securing the upper edge to the upper pan means and a lower edge also with means for securing the lower edge to the lower pan means.
Claim 16
Dependent Claim
45 words
The tiltable bearing according to claim 7, wherein said upright side walls of the upper and lower pan means and the diameter of the piston means are dimensioned relative to each other so that the side walls exert a bias force on the piston means.
Claim 17
Dependent Claim
27 words
The tiltable bearing according to claim 7, wherein said substantially upright side wall and said bottom wall of each pan means are formed as an integral sTructure.
Claim 18
Dependent Claim
71 words
The tiltable bearing according to claim 1, wherein said piston means comprise peripheral edges between the outer wall and each of said end faces, a portion of said outer wall having a reduced piston diameter to provide a circumferential groove in the outer wall between said peripheral edges, and sealing lip means forming part of at least one of said peripheral edges, said sealing lip means contacting said space confining means.
Claim 19
Dependent Claim
22 words
The tiltable bearing according to claim 1, wherein said material of the piston means is a synthetic material such as a polyamide.
Claim 20
Dependent Claim
18 words
The tiltable bearing according to claim 1, wherein said material of the piston means is a non-ferrous metal.
Claim 21
Dependent Claim
18 words
The tiltable bearing according to claim 1, wherein said material of the piston means is a light metal.
Claim 22
Dependent Claim
40 words
The tiltable bearing according to claim 1, wherein said space confining pan means comprise a corrugated outer surface for bonding the lower space confining pan means to said substructure and the upper space confining pan means to the supported load.
Claim 23
Dependent Claim
21 words
The tiltable bearing according to claim 1, wherein said space confining means are made of a synthetic material, such as fiberglass.
Claim 24
Dependent Claim
139 words
A tiltable bearing for supporting a load on a substructure comprising space confining means for containing a pressure material therein, said space confining means including an outer ring, a first piston member inserted in said ring to close one end of the ring, and a second piston member inserted in said ring to close its other end, said piston members having shaped end faces facing each other and said pressure material, said end faces having mirror-symmetrical surfaces and a spacing between said shaped faces which, due to the mirror-symmetrical shape of the end faces, decreases from a central axis of said piston members toward their periphery, said piston members and said ring being dimensioned relative to each other so that in combination with said shaped end faces the load presses the piston members into sealing contact with said ring.
Claim 25
Dependent Claim
139 words
A tiltable bearing for supporting a load on a substructure comprising space confining means for containing a pressure material therein, said space confining means including an outer ring, a first piston member inserted in said ring to close one end of the ring, and a second piston member inserted in said ring to close its other end, said piston members having shaped end faces facing each other and said pressure material, said end faces having mirror-symmetrical surfaces and a spacing between said shaped faces which, due to the mirror-symmetrical shape of the end faces, decreases from a central axis of said piston members toward their periphery, said piston members and said ring being dimensioned relative to each other so that in combination with said shaped end faces the load presses the piston members into sealing contact with said ring.
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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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |