Electricity: electrical systems and devices – Control circuits for electromagnetic devices – For relays or solenoids
Reexamination Certificate
2007-02-20
2007-02-20
Sircus, Brian (Department: 2836)
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
For relays or solenoids
C060S403000
Reexamination Certificate
active
10466451
ABSTRACT:
A failure detection device for a hydraulic motor according to the present invention comprises a hydraulic pump3that is driven by a prime mover2; a hydraulic motor1for traveling that is driven by hydraulic oil discharged from the hydraulic pump3; a transmission7that is connected with an output shaft of the hydraulic motor1for traveling; a stopping detection device26that detects that a traveling vehicle has stopped; a fluid level detection device35that detects an oil level in the transmission7; and a warning device39, 40that issues a warning when the stopping detection device26detects that the traveling vehicle has stopped, and also the fluid level detection device35detects that the oil level in the transmission7has reached a predetermined value La.
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Hitachi Construction Machinery Co. Ltd.
Nguyen Danny
Sircus Brian
LandOfFree
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