Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1990-09-27
1992-01-07
Scott, J. R.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
B66B 904
Patent
active
050782363
ABSTRACT:
A hydraulic elevator power unit has an oiltight type detector for detecting the number of revolutions of an electric motor. A leak oil hole formed in a lower end portion of the detector is connected to a leak oil tank. The operating oil entering the detector is discharged through the leak oil hole, thereby preventing the detecting portion from being immersed in the operating oil.
Kamiya Yoshio
Miyake Tatsuro
Shimoaki Motoo
Takigawa Yukihiro
Usida Hiroshi
Colbert Lawrence E.
Mitsubishi Denki & Kabushiki Kaisha
Scott J. R.
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