Inventor
SCOBIE WILLIAM B
US20 patents
Patents
20 patentsUS5044257ASep 3, 1991
Rotary actuator and method for forming a rotary piston
KEYSTONE INT46 citations92
US4846225AJul 11, 1989
Transmission assembly for use with double block and bleed system
KEYSTONE INT37 citations92
US4846212AJul 11, 1989
Bleed valve assembly for double block and bleed system
KEYSTONE INT51 citations92
US4505290AMar 19, 1985
Valve seat assembly and valve
KEYSTONE INT31 citations92
US5054374AOct 8, 1991
Rotary actuator
KEYSTONE INT50 citations91
US5007330AApr 16, 1991
Rotary actuator and seal assembly for use therein
KEYSTONE INT45 citations91
US4685611AAug 11, 1987
Butterfly valve construction having a composite seat
KEYSTONE INT32 citations91
US4682758AJul 28, 1987
Disk/stem connection apparatus for butterfly valve
KEYSTONE INT30 citations90
US4659064AApr 21, 1987
Apparatus for fixing the position of a valve element shaft in a bore
KEYSTONE INT32 citations86
US4457490AJul 3, 1984
High temperature valve and seat therefor
KEYSTONE INT21 citations82
US4410163AOct 18, 1983
Valve seat
KEYSTONE INT25 citations81
US4967779ANov 6, 1990
Method of installing a valve seat in a valve body
KEYSTONE INT15 citations74
US4817213AApr 4, 1989
Method for forming a torus and a piston made therefrom for use in a rotary actuator
KEYSTONE INT9 citations74
US4496135AJan 29, 1985
Alignment maintaining apparatus for trunnion mounted valves
KEYSTONE INT17 citations74
US4411438AOct 25, 1983
Packing gland
KEYSTONE INT10 citations74
US4846441AJul 11, 1989
Methods and apparatus for adjusting a valve closure member
KEYSTONE INT16 citations73
US4828221AMay 9, 1989
Valve assembly
KEYSTONE INT17 citations72
US4651763AMar 24, 1987
Fire-safe ventilation valve
KEYSTONE INT11 citations71
US4649949AMar 17, 1987
Fireproof valve assembly and seal element for use therein
KEYSTONE INT11 citations71
US4648418AMar 10, 1987
Fireproof valve assembly and valve element for use therein
KEYSTONE INT10 citations71