Hydraulic elevator system

Details Hydraulic elevator system Hydraulic elevator system

B - Operations, Transporting

66

B

187/21, 187/4

B66B 11/04 (2006.01) B66B 9/04 (2006.01)

Patent

CA 1272969

ABSTRACT OF THE DISCLOSURE A hydraulic elevator system having a tunnel member as part of the car frame, to reduce the pit depth required for a hydraulic jack. A stabilizer for the plunger of the hydraulic jack is fixed to the bottom of the tunnel member, with the stabilizer being in an inactive, retracted position while the cylinder head is within the tunnel member. The stabilizer is automatically actuated to an operative plunger support position, as the elevator car rises and the bottom of the tunnel member starts to rise higher than the cylinder head, to provide an additional lateral support point for the plunger. The lateral support function provided by the stabilizer functions at all times, in both the active and inactive positions, without any wear inducing relative motion between the stabilizing surfaces of the stabilizer, and any other element of the system, including the hydraulic jack, its plunger, or the tunnel of the car frame.

534816

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