US 9,810,360 B2
Quick coupling for connecting during fluid flow in a hydraulic circuit
Paul E. Lemay, Saint Paul, MN (US); Timothy T. Marquis, Otsego, MN (US); Michael R. Gose, Frederic, WI (US); and Andrew J. Holst, Plymouth, MN (US)
Assigned to Parker-Hannifin Corporation, Cleveland, OH (US)
Appl. No. 14/429,567
Filed by Parker-Hannifin Corporation, Cleveland, OH (US)
PCT Filed Mar. 8, 2013, PCT No. PCT/US2013/029824
§ 371(c)(1), (2) Date Mar. 19, 2015,
PCT Pub. No. WO2014/058461, PCT Pub. Date Apr. 17, 2014.
Claims priority of provisional application 61/702,793, filed on Sep. 19, 2012.
Prior Publication US 2015/0233511 A1, Aug. 20, 2015
Int. Cl. F16L 37/34 (2006.01); F16L 37/35 (2006.01); F16L 37/56 (2006.01)
CPC F16L 37/34 (2013.01) [F16L 37/35 (2013.01); F16L 37/565 (2013.01); Y10T 137/0491 (2015.04); Y10T 137/87949 (2015.04); Y10T 137/87957 (2015.04)] 29 Claims
OG exemplary drawing
 
1. A fluid coupling member having a connection sequence starting with a disconnected configuration and moving to a connection initiation configuration and then to a fully connected configuration, the coupling member comprising:
a supply fluid passage,
a supply valve in fluid communication with the supply fluid passage, the supply valve having a fully closed position to fully close fluid communication between the supply fluid passage and a first flow passage of an adjacent coupling member and an open position to establish such fluid communication,
a restrictor in fluid communication with the supply fluid passage upstream of the supply valve, the restrictor having an open position to open fluid flow through the supply fluid passage and an at least partially closed position to at least partially close fluid flow through the supply fluid passage,
the supply valve being in its fully closed position in the disconnected configuration and in the connection initiation configuration, the supply valve being in its open position in the fully connected configuration,
the restrictor being in its open position in the disconnected configuration and in the fully connected configuration, and the restrictor being in its at least partially closed position in the connection initiation configuration.