US 11,815,176 B2
Drop-in lube-on-demand valve and kit
John Varvayanis, Bellows Falls, VT (US); Maura J. Stafford, Warner Robins, GA (US); and James A. Dial, Springfield, MO (US)
Assigned to Sonnax Transmission Company, Bellows Falls, VT (US)
Filed by Sonnax Transmission Company, Bellows Falls, VT (US)
Filed on Oct. 21, 2021, as Appl. No. 17/507,407.
Claims priority of provisional application 63/107,297, filed on Oct. 29, 2020.
Prior Publication US 2022/0136598 A1, May 5, 2022
Int. Cl. F16H 61/02 (2006.01); F16K 31/122 (2006.01); F16H 41/30 (2006.01); F15B 13/04 (2006.01)
CPC F16H 61/0267 (2013.01) [F15B 13/0401 (2013.01); F16H 41/30 (2013.01); F16K 31/1221 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A drop-in lube boost valve assembly to replace an original equipment (OE) lube boost valve assembly in a vehicle transmission hydraulic circuit, the OE lube boost valve assembly having a valve body having an inlet port, a balancing port and an outlet port, the drop-in lube boost valve assembly comprising:
a sleeve having an inlet port, an outlet port, and a bore extending between and fluidically connecting the inlet port and the outlet port, the inlet port and outlet port longitudinally spaced from each other, the sleeve including a valve chamber and a spring chamber, wherein an end of the spring chamber forms a valve exhaust;
a valve having a sealing portion and a spring stem, the valve positioned in the sleeve with the sealing portion positioned in the sleeve bore, the valve having a valve face; and
a spring, the spring positioned on the valve spring stem,
wherein the valve reciprocates in the sleeve between an open state in which the sealing portion does not overlie the sleeve outlet port by application of a force exerted on the valve face by hydraulic fluid pressure and a closed state in which the sealing portion overlies and closes off the outlet port, and
wherein the sealing portion is spaced from the sleeve inlet port in the open state and the closed state.