Hydraulic elevator

Details Hydraulic elevator Hydraulic elevator

F - Mech Eng,Light,Heat,Weapons

15

B

187/6, 138/80.13

F15B 21/00 (2006.01)

Patent

CA 1180638

SPECIFICATION 1. Title of the Invention: HYDRAULIC ELEVATOR 2. Abstract of the Disclosure: This invention relates to a hydraulic elevator wherein working oil is transferred from a tank to a jack or vice versa by means of a hydraulic pump which is driven by an electric motor, so as to cause the elevator to ascend and descend; characterized in that a hydraulic circuit is equipped with electronically-controlled variable flow solenoid valves which set flow rates of the working oil in accordance with a program for electronic control in correspondence with respective stages of stop, slow speed ascent, full speed ascent, slow speed descent and full speed descent of the elevator.

384568

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