US4238138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connection system between a slide and a very long member
Assignee: SETEC TRAVAUX PUBLICS
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Filing: 1979-10-25
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Granted: 1980-12-09
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Expires: 1999-10-25
Abstract
Abstract A connection system between a slide and a very long member, allowing some longitudinal movement of said member in relation to the slide, corresponding to differential deformation, said slide being of the type which comprises a support provided with clamping parts which surround at least a part of said member. In accordance with the invention, the slide comprises, at the clamping zones, plates made of a material with a low coefficient of friction firstly on the surface of the support facing said member and secondly on the internal surface of each of said clamping parts. Application to connection systems for very long rails such as rails which carry travelling cranes and lateral guide rails for public transport vehicles.
Inventors
- 👤 Jean-Marie Demorieux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:24
CPC Classifications
E; E01; E01B; E01B25/00; E01B25/28; B; B66; B66C; B66C7/00; B66C7/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
158 words
A connection system for force clamping a very long transport rail to a relatively fixed slide while allowing some longitudinal movement of said rail relative to said slide corresponding to differential deformation, said rail including oppositely directed half flanges, said slide comprising a support provided with clamping parts overlying said half flanges and clamping said half flanges to said support the improvement wherein said support and said clamping parts comprise plates made of a material having a low coefficient of friction respectively mounted to the surface of the support facing said half flanges and secondly on the internal surface of each of said clamping parts facing the opposite side of said half flanges, and wherein said half flanges include polished metal strips mounted on opposite sides for contact with said plates, such that for all relative longitudinal movement of said slide and said rail, the contact surfaces are limited to facing surfaces of said strips and said plates.
Claim 2
Dependent Claim
158 words
A connection system for force clamping a very long transport rail to a relatively fixed slide while allowing some longitudinal movement of said rail relative to said slide corresponding to differential deformation, said rail including oppositely directed half flanges, said slide comprising a support provided with clamping parts overlying said half flanges and clamping said half flanges to said support the improvement wherein said support and said clamping parts comprise plates made of a material having a low coefficient of friction respectively mounted to the surface of the support facing said half flanges and secondly on the internal surface of each of said clamping parts facing the opposite side of said half flanges, and wherein said half flanges include polished metal strips mounted on opposite sides for contact with said plates, such that for all relative longitudinal movement of said slide and said rail, the contact surfaces are limited to facing surfaces of said strips and said plates.
Claim 3
Dependent Claim
41 words
A connection system according to claim 1, wherein the plates of the support of the slide are made of a material which has a higher modulus of elasticity than that which constitutes the plates of the clamping parts of said slide.
Claim 4
Dependent Claim
16 words
A connection system according to claim 1, wherein said very long transport rail is a section.
Claim 5
Dependent Claim
23 words
A connecton system according to claim 3, wherein said section is an H section and said flanges constitute lateral flanges of said section.
References Cited (Backward Citations)
FR1174662A
Cited
US3243236A
Cited
FR1389983A
Cited
US3397856A
Cited
US3585937A
Cited
US3924907A
Cited
US4062490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |