US 12,013,046 B2
Gate valve
Alagarsamy Sundararajan, Sugar Land, TX (US)
Assigned to SRI Energy, Inc., Sugar Land, TX (US)
Filed by SRI Energy, Inc., Sugar Land, TX (US)
Filed on Jan. 3, 2023, as Appl. No. 18/149,420.
Application 18/149,420 is a continuation of application No. 17/346,320, filed on Jun. 14, 2021, granted, now 11,549,594.
Application 17/346,320 is a continuation of application No. 16/889,881, filed on Jun. 2, 2020, granted, now 11,131,393, issued on Sep. 28, 2021.
Application 16/889,881 is a continuation of application No. 15/885,348, filed on Jan. 31, 2018, granted, now 10,677,360, issued on Jun. 9, 2020.
Application 15/885,348 is a continuation of application No. 14/706,065, filed on May 7, 2015, granted, now 9,885,420, issued on Feb. 6, 2018.
Prior Publication US 2023/0228332 A1, Jul. 20, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F16K 3/02 (2006.01); F16J 15/16 (2006.01); F16J 15/3236 (2016.01); F16K 3/20 (2006.01); F16K 27/04 (2006.01)
CPC F16K 3/0218 (2013.01) [F16J 15/164 (2013.01); F16J 15/3236 (2013.01); F16K 3/0227 (2013.01); F16K 3/0236 (2013.01); F16K 3/20 (2013.01); F16K 3/207 (2013.01); F16K 27/044 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A gate valve comprising:
a valve body including a cavity configured to be in fluid communication with a channel, the channel: (a) having proximal and distal channel portions, and (b) extending between proximal and distal valve body portions;
a gate configured to seal the channel in a closed gate position and unseal the channel in an open gate position;
a proximal seat between the proximal valve body portion and the gate and a distal seat between the distal valve body portion and the gate, the proximal seat including an annular groove on an outer surface of the proximal seat;
at least one seal between the valve body and the proximal seat, the at least one seal including: (a) a first ring contacting a first spring and a second ring contacting a second spring, (b) an annular ring included in the annular groove and between the gate and the first spring; and
a proximal resilient member between the valve body and the proximal seat and a distal resilient member between the valve body and the distal seat;
wherein (a) the proximal seat is configured to slide towards the gate when the gate moves into the closed gate position, (b) the first spring is not included in the annular groove; (c) the first ring is not included in the annular groove; (d) the proximal seat is configured to directly contact the gate when the gate is in the closed gate position, and (e) the proximal seat is monolithic.