Swing arm crane and method

Details Swing arm crane and method Swing arm crane and method

2006-08-29

2006-08-29

Tsay, Frank S. (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S077200

Reexamination Certificate

active

07096963

ABSTRACT:
An apparatus for lifting and moving a load. The apparatus comprises a lift frame having a first and second vertical member that are connected so that a working window area is defined. The apparatus further comprises a rotary actuator mounted on the first vertical member, and an arm having a first end and a second end, and wherein the first end of the arm is pivotly connected to the rotary actuator. The arm is pivotal from an area exterior of the working window area to an area within the working window area. The apparatus may further comprise a winch, operatively attached to the arm, for lifting a load with the cable. A method of lifting a load is also disclosed.

REFERENCES:
patent: 3645343 (1972-02-01), Mays
patent: 4610315 (1986-09-01), Koga et al.
patent: 4703811 (1987-11-01), Lam
patent: 6536541 (2003-03-01), Pedrelli
patent: 6554075 (2003-04-01), Fikes et al.
patent: 6569024 (2003-05-01), Kleimeyer

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