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Inventor

DONNALLY ROBERT B

US7 patents
⚠️ This page may combine multiple inventors who share the name “DONNALLY ROBERT B”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DONNALLY ROBERT B

4 patents
US4932175AJun 12, 1990

Telescopic drilling derrick apparatus

DONNALLY ROBERT B52 citations89
US8813436B2Aug 26, 2014

Pinned structural connection using a pin and plug arrangement

DONNALLY ROBERT B24 citations83
US8875911B2Nov 4, 2014

Drilling rig mast lift systems and methods

DONNALLY ROBERT B3 citations60
US4961562AOct 9, 1990

Apparatus for engaging beams

DONNALLY ROBERT B0 citations49

DRECO INC

1 patent
US5423390AJun 13, 1995

Pipe racker assembly

DRECO INC82 citations92

NAT OILWELL LP

1 patent
US7234896B2Jun 26, 2007

Vertically folding service arm for a movable platform offshore drilling or servicing rig

NAT OILWELL LP14 citations79

DRESSER IND

1 patent
US4339225AJul 13, 1982

Power shovel crowd drive assembly

DRESSER IND15 citations72