Inventor
AHLSTONE ARTHUR G
28 patents
⚠️ This page may combine multiple inventors who share the name “AHLSTONE ARTHUR G”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
VETCO INC
15 patentsUS4272109AJun 9, 1981
Ring gasket retainer for flanged connectors
VETCO INC55 citations96
US4209193AJun 24, 1980
Rigid connector for large diameter pipe
VETCO INC79 citations96
US4153278AMay 8, 1979
Hydraulically operated misalignment connector
VETCO INC69 citations96
US4294477AOct 13, 1981
Flexible ring gasket retainer for flanged connectors
VETCO INC43 citations92
US4124231ANov 7, 1978
Rigid pipe connector with radially shiftable lock elements and method of making the same
VETCO INC55 citations92
US4124232ANov 7, 1978
Rigid pipe connector with lock elements and method of making the same
VETCO INC53 citations92
US4124233ANov 7, 1978
Rigid pipe connector with lock ring and method of making the same
VETCO INC37 citations92
US4120520AOct 17, 1978
Lockable rigid connector for pipe and method of making the same
VETCO INC46 citations92
US4168852ASep 25, 1979
Ring gasket retainer for flanged connectors
VETCO INC21 citations82
US4168853ASep 25, 1979
Shiftable ring gasket retainer for flanged connectors
VETCO INC27 citations82
US4153281AMay 8, 1979
Misalignment connector with retained internal spherical seal
VETCO INC28 citations82
US4133557AJan 9, 1979
Preloaded misalignment pipe connector
VETCO INC28 citations82
US4133558AJan 9, 1979
Misalignment pipe connector
VETCO INC28 citations82
US4124230ANov 7, 1978
Rigid pipe connector with locking screws and method of making the same
VETCO INC24 citations82
US4124229ANov 7, 1978
Rigid connector for pipe and method of making the same
VETCO INC28 citations82
VETCO OFFSHORE IND INC
4 patentsUS3933202AJan 20, 1976
Apparatus for setting and locking packing assemblies in wellheads
VETCO OFFSHORE IND INC43 citations92
US3944273AMar 16, 1976
Retrieving tool for wellhead packing
VETCO OFFSHORE IND INC30 citations82
US4030544AJun 21, 1977
Wellhead seal apparatus and pulling tool for releasing and retrieving such apparatus
VETCO OFFSHORE IND INC16 citations74
US3937251AFeb 10, 1976
Fluid pressure operated shut off valve apparatus
VETCO OFFSHORE IND INC9 citations74