Two port hydraulic ram operation with locking/unlocking method
AssigneeWorldwide Oilfield Machine, Inc.
InventorsPrashant N Akhare, Rahul Patil
Life of this patent
Estimating the term…
Abstract
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. To close the rams and lock the rams in a closed position, hydraulic fluid is directed to the close port where the rams close and then are locked in the closed position. To open the rams, hydraulic fluid is direct to the open port whereupon the wedge locks are unlocked. Afterward the wedge locks are unlocked, hydraulic fluid is utilized to open the rams.
Claims18
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.
A hydraulic method for opening and closing a ram and operating a lock and unlock mechanism using only an open port and a close port, comprising:
- to close the ram, a hydraulic pressure is directed through the close port to a close chamber to close the ram, the ram being urged to a closed position thereby activating a first switch, the first switch then opening a first valve to direct the hydraulic pressure to a lock, the lock being urged from an unlocked position to a locked position, the lock then engaging an extension of the ram to maintain the ram in the locked position;
- and
- to open the ram, the hydraulic pressure is directed through the open port to the lock, the lock being urged to the unlocked position whereby the lock activates to a second switch, the second switch then opening a second valve to direct the hydraulic pressure to an open chamber to open the ram.
A hydraulic method for opening and closing rams and operating a lock and unlock mechanism using only an open port and a close port;
- to close the rams and lock the rams in a closed position, hydraulic fluid is directed to the close port to close the rams, then only after the rams are in a fully closed position the hydraulic fluid is directed to the lock and unlock mechanism which is then moved to a locked position;
- to open the rams, hydraulic fluid is directed to the open port whereupon the lock and unlock mechanism is moved to an unlocked position;
- and
- then only after the lock and unlock mechanism is moved to a fully unlocked position, the hydraulic fluid is directed to open the rams.
Dependencies are inferred from the claim text.