F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
340/136, 251/19,
F16K 31/46 (2006.01) F15B 13/042 (2006.01) G05G 9/04 (2006.01) G05G 9/047 (2006.01)
Patent
CA 1193344
ABSTRACT OF THE DISCLOSURE A joystick controller 10 for remotely controlling hydraulic directional control valve 82 and also for control- ling a solenoid actuated pressure build-up valve 90 is disclosed. A light-emitting diode 19 is carried in and by a handle 13 of the joystick controller 10. A photosensitive transistor 31 receives the light emitted from the light- emitting diode 19. When the handle 13 moves off of a neutral position, a receptacle 28 blocks the light from the photo-transister 31. In one embodiment, a fiber optic light conductor 20 extends from the light-emitting diode 19 toward the photo-transistor 31. The photo-transister 31 then actuates a relay switch which sends a control signal to a solenoid actuated pressure build-up valve 90, thereby providing a ready means for effectuating both the control of the hydraulic directional control valve 82 and the pressure build-up valve solenoid 90 with one controller 10.
396493
Dana Corporation
Ridout & Maybee Llp
LandOfFree
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