Railways: surface track – Electrical connections – Combined rail joint or support
Patent
1980-04-14
1982-04-27
Bertsch, Richard A.
Railways: surface track
Electrical connections
Combined rail joint or support
B60C 2700
Patent
active
043266681
ABSTRACT:
Vehicle traction devices for passenger cars and alike including a flexible belt-like traction mat with transverse corrugations on one side and substantially smooth on the other side. In one embodiment, one end of the mat is secured to anchoring means including a flexible anchoring pad and ground gripping element. In another embodiment, the mat is secured to a bridge having cleats for anchoring the device to the ground.
In use, the traction mat is first arranged to form a loop relative to the anchoring means. With its corrugations facing a tire and its smooth side facing the ground, the traction mat will easily be drawn under a spinning wheel until that end of it, which is secured to the anchoring means, becomes choked by the anchoring means. The tractive effort then developed causes the anchoring means to become wedged and thus assuring its fixed position, whereby the traction mat is prevented from being propelled away by the driven wheel.
REFERENCES:
patent: 3279700 (1966-10-01), Britschgi
patent: 3512613 (1970-05-01), Peterson
patent: 3672422 (1922-06-01), Greipel
patent: 3918638 (1975-11-01), Nelson
Bertsch Richard A.
Roehrig, Jr. August E.
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