Patent US3585937A successfully refreshed from Google Patents.
US3585937A
Expired / Lapsed
US
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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 17:15
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
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US3167145A
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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 |