Title:
Threaded connections
United States Patent 3355192
US Patent References:
Drill tool joint
- - 1879856
Well casing joint
- - 2111196
Leak-resisting pipe thread
- - 2177100
Packed pin and box drill pipe coupling with means preventing extrusion of packing ring
- - 3047316
Box-and-pin type threaded joint
- - 3050318
Drill tool joint
- - 1879856
Well casing joint
- - 2111196
Leak-resisting pipe thread
- - 2177100
Packed pin and box drill pipe coupling with means preventing extrusion of packing ring
- - 3047316
Box-and-pin type threaded joint
- - 3050318
Inventors:
Kloesel Jr., Joseph A.
Crews, Sam T.
Crews, Sam T.
Publication Date:
11/28/1967
View Patent Images:
Export Citation:
Assignee:
DRILCO OIL TOOLS INC
Primary Class:
Other Classes:
285/334, 411/414
International Classes:
F16L15/06; E21B17/042; F16L15/00; E21B17/02
US Patent References:
| 3129963 | Low release torque threaded joint |
Foreign References:
| IT513952B |