Snowplow and hydraulic system for same

Details Snowplow and hydraulic system for same Snowplow and hydraulic system for same

1992-10-14

1993-11-30

Reese, Randolph A.

Excavating

Snow or ice removing or grooming by portable device

Including specific hydraulic control system to position...

37232, 37236, 37266, E01H 500

Patent

active

052653560

ABSTRACT:
A hydraulic system for a hydraulic-piston-lifted snowplow adapted to scrape a surface (e.g., a snowplow for scraping snow and ice off pavements) is shown. To save unnecessary wear on the snowplow blade, the system can be operated to allow less than the full weight of the moldboard and blade to rest on the surface being scraped. In the operation of the plow, a fraction of the moldboard and blade weight selected, the magnitude of an instantaneous deviation therefrom is measured and converted into an electrical signal, and a servo-operated control valve is actuated in response to said signal for bypassing more or less hydraulic fluid away from piston in connection of the hydraulic lift given the moldboard and blade by the piston.

REFERENCES:
patent: 3706144 (1972-12-01), Miceli
patent: 4028820 (1977-06-01), Simonds, Jr.
patent: 4074448 (1978-02-01), Niemala
patent: 4258484 (1981-03-01), Lansard

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