US 12,000,493 B2
Check valve
Anthony Robert Yagiela, Sagamore Hills, OH (US); Cal R. Brown, Lyndhurst, OH (US); Gregory S. Kalata, Avon Lake, OH (US); Erick R. Shelley, Lyndhurst, OH (US); and Jeffrey M. Rubinski, Novelty, OH (US)
Assigned to SWAGELOK COMPANY, Solon, OH (US)
Filed by Swagelok Company, Solon, OH (US)
Filed on Nov. 17, 2022, as Appl. No. 17/988,851.
Claims priority of provisional application 63/280,346, filed on Nov. 17, 2021.
Prior Publication US 2023/0151898 A1, May 18, 2023
Int. Cl. F16K 15/06 (2006.01); F16K 1/38 (2006.01); F16K 1/42 (2006.01); F16K 15/02 (2006.01); F16K 27/02 (2006.01)
CPC F16K 15/064 (2021.08) [F16K 1/38 (2013.01); F16K 1/427 (2013.01); F16K 27/0209 (2013.01); F16K 15/026 (2013.01); F16K 2200/3051 (2021.08); F16K 2200/3053 (2021.08); Y10T 137/7925 (2015.04); Y10T 137/7929 (2015.04)] 36 Claims
OG exemplary drawing
 
1. A check valve comprising:
a valve body including:
a body housing including an outer circumferential wall extending between an inlet port and an outlet port to define a valve cavity therebetween;
a stationary annular valve seat insert seated in a body seat surface surrounding the inlet port;
a bushing disposed in the valve cavity and defining a central bore, the bushing including an outboard end surface in axial engagement with the valve seat insert; and
a biasing member disposed between a bearing portion of the body housing and an inboard end of the bushing to allow for axial movement of the bushing with respect to the body seat surface; and
a valve element extending through the bushing central bore and movable between a closed position in which the valve element seals against the valve seat insert to prevent flow between the inlet port and the outlet port, and an open position in which fluid flow is permitted from the inlet port to the outlet port.