Railway rolling stock – Trackman's-car drive – Vertical hand lever
Patent
1990-05-23
1991-10-22
Oberleitner, Robert J.
Railway rolling stock
Trackman's-car drive
Vertical hand lever
105141, 105142, 105124, 188 2411, B61D 1508
Patent
active
050585061
ABSTRACT:
A space transport vehicle including a body movably mounted on an elongated guide member disposed in outer space and driven therealong. A drive wheel is mounted on a drive shaft in rolling engagement with the elongated guide carrying the vehicle. A brake member on the drive shaft moves into and out of engagement with an adjacent surface of the drive wheel. An actuator on the body manually moves back and forth between spaced positions in an arc of movement. A rachet-and-pawl mechanism operates upon movements of the actuator in one direction between first and second positions for coupling the actuator to the drive wheel to incrementally rotate the wheel in one rotational direction and to operate upon movements of the actuator in the opposite direction for uncoupling the actuator from the wheel. The brake member is threadedly coupled to the drive shaft in order that the brake member will be operated only when the actuator is moved on beyond its first and second positions for shifting the brake member along the drive shaft and into frictional engagement with the adjacent surface on the drive wheel.
REFERENCES:
patent: 88366 (1869-03-01), Case
patent: 167119 (1875-08-01), Ray
patent: 285035 (1883-09-01), Holland
patent: 302090 (1884-07-01), Bernhard
patent: 514449 (1894-02-01), Donovan
patent: 567362 (1896-09-01), Small
patent: 1107579 (1914-08-01), Brady
patent: 4758013 (1988-07-01), Agrillo
patent: 4865344 (1989-09-01), Romero et al.
Adams Harold W.
Fein Edward K.
Le Mark T.
Oberleitner Robert J.
Schlorff Russell E.
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