Hydraulic system for use with snow-ice removal vehicles

Fluid sprinkling – spraying – and diffusing – Container for non-fluid material – and scattering means – Container tilted for discharge

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239663, 239677, 239684, 180 534, 298 22C, 417295, 91 31, 37234, E01C 1920, B60P 116

Patent

active

RE0338354

ABSTRACT:
A hydraulic system is provided including a hydraulic pump which is continuously coupled with the engine of a utility such as a dump truck utilized for snow-ice removal. When hydraulic implements employed on the truck are not actuated, the pump operates in a cavitation mode. During this cavitation mode of operation, there is no ingress of air through seals or the like to a venting of the gear pump chamber essentially to tank or atmosphere. A poppet valve is actuated in conjunction with periodic use of hydraulic elements on the truck to actuate the pump to an operational or pressurized mode. A key actuated calibrating system is employed to calibrate snow-ice removal components in a secure manner. Calibration is provided in conjunction with EEPROM memory.

REFERENCES:
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patent: 3038449 (1962-06-01), Murphy, Jr. et al.
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patent: 3549120 (1970-12-01), Weiss
patent: 3776431 (1973-12-01), Riley
patent: 3935917 (1976-02-01), Eley et al.
patent: 4592593 (1986-06-01), Channell
patent: 4731999 (1988-03-01), Niemiec
patent: 4741675 (1988-05-01), Bowden

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