Quick drop control for scrapers

Details Quick drop control for scrapers Quick drop control for scrapers

1974-11-13

1976-06-29

Pellegrino, Stephen C.

Excavating

Peat excavators

37126A, 91436, 37DIG1, B60P 136, F15B 1108

Patent

active

039655873

ABSTRACT:
An hydraulic control, especially for tractor scrapers, having a quick action capability employing a pilot fluid to unseat a holding valve initiating the release of high pressure exhaust fluid from a cylinder which is recirculated to the opposite end of the cylinder to obtain a regenerative effect providing a quicker action than the normal movement.

REFERENCES:
patent: 3568707 (1971-03-01), Shore
patent: 3604313 (1971-09-01), Fruehauf
patent: 3633461 (1972-01-01), Komatsu-shi et al.
patent: 3786827 (1974-01-01), Berg

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