US 12,146,512 B2
Two port hydraulic ram operation with locking/unlocking method
Prashant N Akhare, Cypress, TX (US); and Rahul Patil, Tomball, TX (US)
Assigned to WORLDWIDE OILFIELD MACHINE, INC., Houston, TX (US)
Filed by WORLDWIDE OILFIELD MACHINE, INC., Houston, TX (US)
Filed on Oct. 17, 2023, as Appl. No. 18/488,339.
Claims priority of provisional application 63/441,380, filed on Jan. 26, 2023.
Prior Publication US 2024/0255009 A1, Aug. 1, 2024
Int. Cl. F15B 15/14 (2006.01); F15B 15/26 (2006.01)
CPC F15B 15/14 (2013.01) [F15B 15/26 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A hydraulic method for opening and closing a ram and operating a wedge lock and unlock mechanism using only an open port and a close port, comprising:
to close the ram a hydraulic fluid flow is directed through the close port to a close chamber to close the ram and only after the ram is fully closed a first switch is activated to allow a first sequence valve to direct the hydraulic fluid flow to a wedge, the wedge is moved by the hydraulic fluid flow to lock against an extension tail rod whereby the ram is locked even with a loss of hydraulic fluid power; and
to open the ram, the hydraulic fluid flow is directed through the open port to the wedge, once the wedge moves to an open position a second switch is activated so that a second sequence valve directs the hydraulic fluid flow to an open chamber to open the ram.