US3585937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transport system comprising a track and a body movable therealong
Assignee: Bertin Technologies SAS
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Filing: 1968-04-04
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Granted: 1971-06-22
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Expires: 1988-04-04
Abstract
Abstract An arrangement for reducing leaks in machine, chiefly ground effect machines such as vehicles running over or under a fluid cushion, this being obtained by providing a friction reduced to a minimum between the free edges of the walls which peripherally confine the fluid cushion and the cooperating vertical or horizontal track surfaces, as provided by laying a strip of friction-reducing material within or along the track surface in registry with the paths of said free edges. Said material may be constituted by hard steel, bronze, polytetrafluorethylene among others.
Inventors
- 👤 Jean Henri Bertin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:23
CPC Classifications
E; E01; E01B; E01B25/00; E01B25/22; E01B25/24; B; B60; B60V; B60V3/00; B60V3/02; B60V3/04; E01B25/08; E01B25/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
147 words
A transport system comprising a track having an operative surface, a machine movable along said surface, said machine having confining wall means adapted to confine between said machine and said operative track surface a fluid volume, means for generating in said volume a fluid pressure which is different from the atmospheric pressure, said confining wall means including at least one seal projecting towards said operative track surface and ending with a protruding free edge spacedly adjacent to said surface, said operative track surface comprising in juxtaposition a body portion formed of a first material having a relatively high coefficient of friction with respect to said free edge, and a solid strip area extending longitudinally of the track in substantial registry with the said free edge, said strip area being formed of a second material having a relatively low coefficient of friction with respect to said free edge.
Claim 2
Dependent Claim
147 words
A transport system comprising a track having an operative surface, a machine movable along said surface, said machine having confining wall means adapted to confine between said machine and said operative track surface a fluid volume, means for generating in said volume a fluid pressure which is different from the atmospheric pressure, said confining wall means including at least one seal projecting towards said operative track surface and ending with a protruding free edge spacedly adjacent to said surface, said operative track surface comprising in juxtaposition a body portion formed of a first material having a relatively high coefficient of friction with respect to said free edge, and a solid strip area extending longitudinally of the track in substantial registry with the said free edge, said strip area being formed of a second material having a relatively low coefficient of friction with respect to said free edge.
Claim 3
Dependent Claim
19 words
A system as claimed in claim 1, wherein said seal extends substantially parallel to the centerline of the track.
References Cited (Backward Citations)
US1685035A
Cited
US2511979A
Cited
US3167145A
Cited
US3225228A
Cited
US3330221A
Cited
US3417709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |