Patent ID: 11859460
Assignee: CROWN OIL TOOLS LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 12:
13. A method of repeatedly attaching and detaching a pressurizable assembly to facilitate flow of a fluid from a wellhead to pressurized equipment and vice versa, the method comprising:
providing a first assembly, having a wellhead connection member, which facilitates a releaseable connection of the first assembly with the wellhead;
providing a second assembly, having an equipment connection member, which facilitates a releaseable connection of the second assembly with pressurized equipment;
forming one of:
1) at least one locking pin, or
2) at least one cam groove defining a one way passageway, for the at least one locking pin, through the at least one cam groove from a cam groove entrance, which is open to receive the at least one locking pin, to a cam groove exit, which is also open to allow exit of the at least one locking pin,

on the first assembly;
forming the other of:
1) at least one locking pin, or
2) at least one cam groove defining a one way passageway, for the at least one locking pin, through the at least one cam groove from a cam groove entrance, which is open to receive the at least one locking pin, to a cam groove exit, which is also open to allow exit of the at least one locking pin;

on the second assembly;
engaging the first assembly with the second assembly, via a relative downward movement of the second assembly relative to the first assembly to a lower most position then followed by a relative upward movement, so that the at least one locking pin enters the at least one open cam groove entrance and follows the one way passageway of the at least one cam groove in a first direction to an intermediate locking position of the one way passageway so that the first and the second assemblies become locked to one another, and
disengaging the first assembly from the second assembly when the second assembly is subsequently moved, downward and then upward, relative to the first assembly, so that the at least one locking pin continues following the one way passageway of the at least one cam groove in the first direction and exits from the at least one cam groove, via the cam groove exit, so that the first and the second assemblies become disengaged and separated from one another.