US3610583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent horseshoe magnet traction line haul
Assignee: MARKEY MACHINERY COMPANY Inc A WA CORP
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Filing: 1970-04-20
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Granted: 1971-10-05
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Expires: 1990-04-20
Abstract
Abstract A sheave for steel cable in a line haul has a circumferential groove in which the cable fits closely, and unlike poles of permanent horseshoe magnets are spaced circumferentially of the sheave to produce a flux path passing through the cable in the groove. The unlike poles of each magnet are formed by the tips of the horseshoe magnet legs. The magnets can be arranged with unlike poles disposed alternately circumferentially of the sheave in the bottom of the sheave cable-receiving groove. The magnet legs project radially from sides of the sheaves.
Inventors
- 👤 Cyrus W Ostrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:16
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/32; F16H55/36; F16H55/50; B; B63; B63B; B63B35/00; B63B35/04; B65; B65H; B65H57/00; B65H57/14; B66; B66D; B66D1/00; B66D1/28; B66D1/36; B66D1/60; B66D1/74; B66D1/7415; B65H2301/00; B65H2301/40; B65H2301/44; B65H2301/443; B65H2301/4433; B65H2301/44332; B65H2555/00; B65H2555/10; B65H2555/13; B66D2700/00; B66D2700/01; B66D2700/0183; B66D2700/0191
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
116 words
A magnet traction line haul comprising a rotative body having a peripheral line-receiving groove, and magnet means carried by said rotative body for attracting and holding a magnet line in such groove including horseshoe magnets arranged circumferentially around the periphery of said rotative body, each magnet having both of its legs projecting from the same side of said groove across said groove to the opposite side of said groove, and the tips of said legs forming magnetic poles in circumferentially spaced portions of said groove, producing magnetic flux paths between unlike magnet poles through the magnetic metal line to draw the line into said groove and increase the traction between the line and said rotative body.
Claim 2
Dependent Claim
116 words
A magnet traction line haul comprising a rotative body having a peripheral line-receiving groove, and magnet means carried by said rotative body for attracting and holding a magnet line in such groove including horseshoe magnets arranged circumferentially around the periphery of said rotative body, each magnet having both of its legs projecting from the same side of said groove across said groove to the opposite side of said groove, and the tips of said legs forming magnetic poles in circumferentially spaced portions of said groove, producing magnetic flux paths between unlike magnet poles through the magnetic metal line to draw the line into said groove and increase the traction between the line and said rotative body.
Claim 3
Dependent Claim
31 words
The line haul defined in claim 1, in which the horseshoe magnets are arranged alternately so that the legs of adjacent magnets project from opposite side of the rotative body groove.
Claim 4
Dependent Claim
26 words
The line haul defined in claim 1, in which the magnets are arranged so that the tips of adjacent legs of adjacent magnets form unlike poles.
Claim 5
Dependent Claim
20 words
The line haul defined in claim 2, in which the tips of adjacent legs of adjacent magnets form unlike poles.
Claim 6
Dependent Claim
231 words
A line haul having magnetically increased wedging traction comprising a rotative body having a peripheral line-receiving groove of a depth at least approximately half as great as its maximum width, a long flexible stranded cable ship''s deep water line of magnetic metal having a stretch received in and bent around a circumferential arc of said rotative body groove and said line stretch having opposite side portions which are spaced arcuately of the line circumference at least 90* bearing wedgingly on opposite side portions of said groove at locations spaced from the groove bottom, and horseshoe magnet means having legs extending transversely of said groove the tips of which form poles arranged along such opposite sides of said groove providing magnetized opposite groove side portions extending in the groove cross section outwardly at least to the portions of the groove sides against which said opposite side portions of said line stretch bear wedgingly, which poles produce a magnetic flux path through said line extending at an angle to the length of said groove and of said line stretch therein to press said opposite side portions of said line stretch against said opposite side portions of said groove and increase the traction between said opposite side portions of said line stretch and said opposite side potions of said rotative body groove against which said opposite side portions of said line stretch bear wedgingly.
Claim 7
Dependent Claim
231 words
A line haul having magnetically increased wedging traction comprising a rotative body having a peripheral line-receiving groove of a depth at least approximately half as great as its maximum width, a long flexible stranded cable ship''s deep water line of magnetic metal having a stretch received in and bent around a circumferential arc of said rotative body groove and said line stretch having opposite side portions which are spaced arcuately of the line circumference at least 90* bearing wedgingly on opposite side portions of said groove at locations spaced from the groove bottom, and horseshoe magnet means having legs extending transversely of said groove the tips of which form poles arranged along such opposite sides of said groove providing magnetized opposite groove side portions extending in the groove cross section outwardly at least to the portions of the groove sides against which said opposite side portions of said line stretch bear wedgingly, which poles produce a magnetic flux path through said line extending at an angle to the length of said groove and of said line stretch therein to press said opposite side portions of said line stretch against said opposite side portions of said groove and increase the traction between said opposite side portions of said line stretch and said opposite side potions of said rotative body groove against which said opposite side portions of said line stretch bear wedgingly.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |