B - Operations – Transporting – 62 – D
Patent
B - Operations, Transporting
62
D
296/70
B62D 25/22 (2006.01) B60R 3/02 (2006.01) B65G 67/02 (2006.01)
Patent
CA 1084968
VEHICLE ENTRANCE RAMP ABSTRACT A motor bus (1) has a side door at its forward end which when opened accommodates laterally outward extension of a ramp (7) from a normally stowed position below the floor (9) of the bus, a portion of the ramp adjacent its outer end serving as a step for entering the bus when the ramp is in its stowed position. Extending longitudinally of the ramp and journalled therein at its outward end is a lead screw (12) which is rotatively driven by a rotary power motor mounted to the inner end of the ramp. A nut threadedly engaging the screw is hingedly mounted to the lower end of a step riser which is hinged at its upper end to the bus floor so as to swing up to a position co-planar with the ramp when the ramp is fully extended. A bell crank having an arm underlying the ramp is actuatable by a fluid motor to swing the inner end of the ramp and lower end of the riser upwardly to their co-planar relation when the motor comes into abutment with the nut during outward extending movement of the ramp.
318542
Manning Donald L.
Smart & Biggar
LandOfFree
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