Title: Lever actuated fluid coupling

Abstract: A manually actuated coupler hydraulically connects large diameter high pressure conduits while the conduits are pressurized. One of the conduits is provided with a body 11, a sleeve 12, and a lever 13 for effecting relative movement between the body and the sleeve. The other conduit is provided with a nipple 14. When the nipple and body are initially connected, they cooperatively define a chamber 43 which is hydraulically isolated from both conduits. The lever is then rotated to advance the sleeve toward the nipple and to open poppet valves 33, 34 in the sleeve and nipple to hydraulically connect the conduits through the chamber 43. The sleeve includes a pressure balancing area 48 which is in open fluid pressure communication with the chamber 43 under conditions, so that high fluid pressure from either conduit will pressure balance the sleeve.

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Inventors: Herzan, Eugene H. (Minnetonka, MN, US)
Johnson, Lyle R. (Minneapolis, MN, US)

Application Number: 004776
Filing Date: 1979-01-19
Publication_date: 1980-09-16
Assignee: Parker-Hannifin Corporation (Cleveland, OH)
Primary Class(es): 137/614.04 137/614.06, 251/149.9
Other Classes:
US Patent Ref:

3348575	Oct, 1967	Simak	137/614.
3498324	Mar, 1970	Breuning	137/614.
3570543	Mar, 1971	Ekman	137/614.
3680591	Aug, 1972	Vik	137/614.
3710823	Jan, 1973	Vik	137/614.
3730221	May, 1973	Vik	137/614.
4009729	Mar, 1977	Vik	137/614.
4074698	Feb, 1978	Hobson et al.	137/614.
4124228	Oct, 1978	Morrison	137/614.

Other Refs:
Primary Examiner: Cohan, Alan
Assistant Examiner: Chambers, A. Michael
Attorney: Baker; James A.