Handling: hand and hoist-line implements – Hoist-line slings
Patent
1988-03-24
1989-06-27
Cherry, Johnny D.
Handling: hand and hoist-line implements
Hoist-line slings
294 8213, B66C 116, B66C 162
Patent
active
048423149
ABSTRACT:
First and second cap members, each cap substantially cylindrical in shape and of an interior diameter slightly larger than the outer diameter of the ends of a section of drill casing. The cap members are open ended at a first end and are sealed via a bottom on a second end, for defining an annular space there within for slipping on to the end portions of a section of casing. There is further provided a lifting lug along the length of the wall of the cap member, the lifting lug including a bore through its body for attaching a length of steel cable therethrough, each lifting lug and steel cable attached thereto forming the lifting assembly of the second ends of the cable attached to a common line for lifting. Each cap member would further include a handle portion extending from the end plate of the cap along its side wall attached to the lifting lug for defining a means for manually lifting the cap and positioning each cap upon the end portion of the section of casing.
REFERENCES:
patent: 609417 (1898-08-01), Day
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patent: 1639786 (1927-08-01), Steinmetz
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patent: 3350129 (1967-10-01), Novak
patent: 3606441 (1971-09-01), Ridgely
patent: 4092038 (1978-05-01), Harris
patent: 4139179 (1979-02-01), Kukulski
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