An adaptor is used to couple a prime mover to an actuator. The adaptor includes a first portion that attaches to the prime mover and a second portion that attaches to the actuator. The outer surface of the first portion is defined by at least one flat portion connected by at least one arcuate portion. The second portion has a bore configured to accept the first portion, with an inner surface shaped to complement the outer surface of the first portion. A bore through the first portion accepts a drive shaft of the prime mover therethrough where the drive shaft is configured to engage the actuator.

An adaptor is used to couple a prime mover to an actuator. The adaptor includes a first portion that attaches to the prime mover and a second portion that attaches to the actuator. The outer surface of the first portion is defined by at least one flat portion connected by at least one arcuate portion. The second portion has a bore configured to accept the first portion, with an inner surface shaped to complement the outer surface of the first portion. A bore through the first portion accepts a drive shaft of the prime mover therethrough where the drive shaft is configured to engage the actuator.

Several embodiments of a clamp device are provided for lifting equipment from a first position to a second elevated position. The present devices include a body member and either a door or a clamping member. In one embodiment, a chain member may be received within the body member and the door member may be closed about the body member to secure a chain member therewith in. In a second embodiment, a cord, cable or rope may be received within the body member and secured therein when a clamping member is attached thereto. Eyelets located on the body member may be used to attach various equipment and supplies thereto. A wench or other hoisting device may be used to raise the chain, cord, cable or rope associated with the present clamp devices and the equipment attached thereto to an elevated position.

Devices for use with wireline sheaves are provided that allow for capturing grease freed from a wireline as it passes around an upper sheave during wireline retraction from a wellbore. Once the freed grease is captured, it is reapplied to the wireline as it passes from the upper sheave to the lower sheave where the grease may be captured for disposal.

Devices for use with wireline sheaves are provided that allow for capturing grease freed from a wireline as it passes around an upper sheave during wireline retraction from a wellbore. Once the freed grease is captured, it is reapplied to the wireline as it passes from the upper sheave to the lower sheave where the grease may be captured for disposal.

A snatch ring for off-road vehicle recovery has an annular core and an outer sheave. The outer sheave has an outer winch line groove and the annular core and the outer sheave are concentric. The annular core is rotatably engaged to the outer sheave so that the annular core and the outer sheave can rotate with respect to each other about an axis of rotation. The annular core has an anchor loop passage therethrough.

A snatch ring for off-road vehicle recovery has an annular core and an outer sheave. The outer sheave has an outer winch line groove and the annular core and the outer sheave are concentric. The annular core is rotatably engaged to the outer sheave so that the annular core and the outer sheave can rotate with respect to each other about an axis of rotation. The annular core has an anchor loop passage therethrough.

A hoist system including an air balancer having an air supply and an air exhaust, a lifting device, and a hoist control pendant to control supply and exhaust of pressurized air to and from the air balancer, respectively, the hoist control pendant configured to control vertical movement of the lifting device. The air exhaust from the air balancer includes a first exhaust flow path through a first exhaust opening and a second exhaust flow path through a second exhaust opening, the first exhaust flow path having a first length and the second exhaust flow path having a second length, the second length being shorter than the first length.

A hoist system including an air balancer having an air supply and an air exhaust, a lifting device, and a hoist control pendant to control supply and exhaust of pressurized air to and from the air balancer, respectively, the hoist control pendant configured to control vertical movement of the lifting device. The air exhaust from the air balancer includes a first exhaust flow path through a first exhaust opening and a second exhaust flow path through a second exhaust opening, the first exhaust flow path having a first length and the second exhaust flow path having a second length, the second length being shorter than the first length.

An adaptor is used to couple a prime mover to an actuator. The adaptor includes a first portion that attaches to the prime mover and a second portion that attaches to the actuator. The outer surface of the first portion is defined by at least one flat portion connected by at least one arcuate portion. The second portion has a bore configured to accept the first portion, with an inner surface shaped to complement the outer surface of the first portion. A bore through the first portion accepts a drive shaft of the prime mover therethrough where the drive shaft is configured to engage the actuator.