US4062295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emergency slipper for high-speed vehicles
Assignee: MAN AG
•
Filing: 1976-08-02
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Granted: 1977-12-13
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Expires: 1996-08-02
Abstract
Abstract An emergency slipper of the type usually spaced above a track but which comes into sliding engagement with the track in an emergency. The slipper comprises slide blocks having bottom surfaces which slide easily along the track, and scraper means for scraping rust, dirt, ice, and the like for the track. The scraper means may be a vertical scraper plate arranged diagonally with respect to the direction of travel, the slipper having a diagonal groove directly in front of the scraper plate. The scraper means may be a scrubbing block arranged as the first slide block of the slipper, the scrubbing block being formed of an impact and abrasion resistant material with a low coefficient of friction and high resistance to high temperatures produced by friction. The rear block of the slipper may be formed of the same material as the scrubbing block. The scrubbing block may have a diagonal groove in its bottom surface. The front block may have an inclined surface between its front and bottom faces.
Inventors
- 👤 Lutz Hamann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:08
CPC Classifications
B; B61; B61H; B61H7/00; B61H7/02; B61H7/04; B61H7/06; B61B; B61B13/00; B61B13/08; Y; Y02; Y02A; Y02A30/00; Y02A30/30
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
128 words
An emergency slipper for a high speed vehicle, the slipper being of the type which is normally spaced above a track but which comes into sliding engagement with the track in an emergency situation, the slipper comprising: a. slide means having a bottom surface for engaging and sliding easily along the track, said slide means comprising a plurality of slide blocks aligned in the longitudinal direction of the track, b. a scraper plate between each two successive slide blocks for engaging and scraping the surface of the track, and c. a groove directly in front of each scraper plate, said groove being located in the rear face of a slide block and its respective scraper plate being arranged against the front face of the next succeeding slide block.
Claim 2
Dependent Claim
128 words
An emergency slipper for a high speed vehicle, the slipper being of the type which is normally spaced above a track but which comes into sliding engagement with the track in an emergency situation, the slipper comprising: a. slide means having a bottom surface for engaging and sliding easily along the track, said slide means comprising a plurality of slide blocks aligned in the longitudinal direction of the track, b. a scraper plate between each two successive slide blocks for engaging and scraping the surface of the track, and c. a groove directly in front of each scraper plate, said groove being located in the rear face of a slide block and its respective scraper plate being arranged against the front face of the next succeeding slide block.
Claim 3
Dependent Claim
22 words
An emergency slipper as defined in claim 1 wherein said scraper means includes a scraper plate arranged in a substantially vertical plane.
Claim 4
Dependent Claim
20 words
An emergency slipper as defined in claim 1 wherein each groove extends across the entire width of the slide blocks.
Claim 5
Dependent Claim
34 words
An emergency slipper as defined in claim 1 wherein said groove and scraper plate are parallel to each other and both are arranged diagonally with respect to the direction of travel of the slipper.
Claim 6
Dependent Claim
24 words
An emergency slipper as defined in claim 1 wherein the front slide block has an inclined surface extending between its front and bottom surfaces.
Claim 7
Dependent Claim
40 words
An emergency slipper as defined in claim 1 wherein the front slide block is a scrubbing block formed of an impact and abrasion resistant material having a low coefficient of friction and high resistance to high temperatures produced by friction.
Claim 8
Dependent Claim
31 words
An emergency slipper as defined in claim 6 including at least three slide blocks, the rear block being a counter block formed of the same material as the front scrubbing block.
Claim 9
Dependent Claim
129 words
An emergency slipper for a high speed vehicle, the slipper being of the type which is normally spaced above a track but which comes into sliding engagement with the track in an emergency situation, the slipper comprising: a. slide means having a bottom surface for engaging and sliding easily along the track, said slide means comprising at least one slide block, b. scraper means having a bottom surface for engaging and scraping the surface of the track, said scraper means comprising a scrubbing block in front of said slide block, said scrubbing block being formed of an impact and abrasion resistant material with a low coefficient of friction and high resistance to high temperatures produced by friction, and c. a groove in the lower surface of said scrubbing block.
Claim 10
Dependent Claim
129 words
An emergency slipper for a high speed vehicle, the slipper being of the type which is normally spaced above a track but which comes into sliding engagement with the track in an emergency situation, the slipper comprising: a. slide means having a bottom surface for engaging and sliding easily along the track, said slide means comprising at least one slide block, b. scraper means having a bottom surface for engaging and scraping the surface of the track, said scraper means comprising a scrubbing block in front of said slide block, said scrubbing block being formed of an impact and abrasion resistant material with a low coefficient of friction and high resistance to high temperatures produced by friction, and c. a groove in the lower surface of said scrubbing block.
Claim 11
Dependent Claim
29 words
An emergency slipper as defined in claim 8 including a counter block behind said slide block, said counter block being formed of the same material as said scrubbing block.
Claim 12
Dependent Claim
24 words
An emergency slipper as defined in claim 8 wherein said groove is arranged diagonally with respect to the direction of travel of the slipper.
Claim 13
Dependent Claim
23 words
An emergency slipper as defined in claim 8 wherein said scrubbing block has an inclined surface extending between its front and bottom surfaces.
References Cited (Backward Citations)
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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) | 1980-12-12 | 1981-06-13 | 1981-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-12 | 1985-06-13 | 1985-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-12 | 1989-06-13 | 1989-12-13 | $7700.00 | Window Closed / Lapsed |