Land vehicles: wheels and axles – Wheel – Emergency
Patent
1986-01-31
1990-03-06
Stormer, Russell D.
Land vehicles: wheels and axles
Wheel
Emergency
301 45, 301 51, B60B 1526
Patent
active
049060511
ABSTRACT:
An auxiliary traction device for vehicle wheels to enhance their traction and braking characteristics under ice and snow conditions. The device comprises a frame which mounts to the outer side of the wheel, connected thereto preferably by the conventional lug bolts so as to rotate in unison with the wheel. Traction members are movably mounted on the frame so as to be selectively extensible into road-engaging positions and retractable when not needed. When extended, the traction members engage the road resiliently so as not to interfere with the normal cushioning action of the tire. Extension and retraction of the traction members may be accomplished either by manual actuation, or by automatic actuation from the driver's station.
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patent: 2174944 (1939-10-01), Leggett
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patent: 3995909 (1976-12-01), van der Lely
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patent: 4558897 (1985-12-01), Okuyama et al.
patent: 4601519 (1986-07-01), D'Andrade
patent: 4603916 (1986-08-01), Granryd
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