Handling: hand and hoist-line implements – Article carrier gripped and carried by hand – Convertible to – or useable as – different device or different...
Patent
1975-01-17
1977-03-22
Goodman, Philip
Handling: hand and hoist-line implements
Article carrier gripped and carried by hand
Convertible to, or useable as, different device or different...
294102A, E21B 1900
Patent
active
040131785
ABSTRACT:
Disclosed is a pipe handling device, power-driven in three degrees of freedom, for manipulating pipe that is essentially vertically oriented. Specific embodiments described relate to racking and unracking drill pipe in a drilling derrick. A maneuverable arm, mounted on the derrick at an appropriate height, grips the pipe, lifts it and moves it to another location. A cable-assisted embodiment designed to handle heavy drill collars features a shock absorber assembly.
REFERENCES:
patent: 1502628 (1924-07-01), Hanna
patent: 2700201 (1955-01-01), Bannister
patent: 3002560 (1961-10-01), Paget
patent: 3561811 (1971-02-01), Turner
patent: 3840128 (1974-10-01), Swoboda
Brown, deceased Cicero C.
Brown, executor by Joe R.
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