Title: Load responsive fluid control valve

Abstract: A direction flow control valve for control of positive and negative loads equipped with a load responsive positive load control which automatically regulates valve inlet pressure to maintain a relatively constant pressure differential between inlet pressure and load pressure. The load responsive control of direction flow control valve blocks the pump flow to the motor while controlling negative load, providing the motor inlet with fluid from the motor exhaust.

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Inventors: Budzich, Tadeusz (Moreland Hills, OH, US)

Application Number: 949250
Filing Date: 1978-10-06
Publication_date: 1980-09-16
Assignee:
Primary Class(es): 137/596.13 60/427, 91/436, 91/446, 137/596.1, 137/596.2, 137/625.68
Other Classes:
US Patent Ref:

Re29538	Feb, 1978	Budzich	137/596.
3768372	Oct, 1973	McMillen	91/531.
3807447	Apr, 1974	Masuda	137/596.
3815631	Jun, 1974	Shaw	137/625.
3998134	Dec, 1976	Budzich	137/596.
4028889	Jun, 1977	Budzich	137/596.
4122865	Oct, 1978	Budzich	137/596.

Other Refs:
Primary Examiner: Michalsky, Gerald A.
Assistant Examiner:
Attorney: