Hydraulic elevator without machine room
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United States of America Patent
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-
May 24, 2011
Grant Date -
May 7, 2009
app pub date -
Oct 13, 2005
filing date -
Jul 19, 2005
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hydraulic elevator for an elevator shaft having guide rails for an elevator cab. The hydraulic elevator has no machine room and includes an assembly disposed between the guide rails and a tank, a pump mounted in the tank, a motor mounted in the tank for driving the pump, and a control valve unit mounted on the tank and in working relationship with the pump. One of the pump and the motor is disposed above the other of the pump and the motor. The hydraulic elevator further includes a hydraulic drive mounted on the tank, the hydraulic drive being configured to move the elevator cab by a cable; and an emergency operating and monitoring device disposed outside of the elevator shaft and connectable to the control valve unit by a measuring line.
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