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Title:
Slip joint for tubular members
United States Patent 2851252
Inventors:
Bus Sr., Franklin L. LE.
Application Number:
US39099453A
Publication Date:
09/09/1958
Filing Date:
11/09/1953
Assignee:
Bus Sr., Franklin L. LE.
Primary Class:
Other Classes:
285/36, 285/148.19, 285/302, 285/330, 285/334, 285/355, 285/922
International Classes:
E21B17/06; E21B17/07
View Patent Images:
US Patent References:
2307275Drilling safety joint1943-01-05
2113821Safety joint1938-04-12
2049290Drilling safety joint1936-07-28
1621583Releasable drill collar1927-03-22