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Title:
Bolt sleeve expanded by wedge and wedging threads
United States Patent 2685221
Inventors:
Lee, Barrett Arthur
Publication Date:
08/03/1954
Assignee:
JOY MFG CO
Primary Class:
Other Classes:
405/302.1
International Classes:
E21D21/00
View Patent Images:
US Patent References:
2386732Tube mount
1523463Water-meter frost bolt
0895158N/A
0781110N/A
RE22926N/A
Foreign References:
FR476982A
FR827301A
GB569774A