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序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
81	Plastic pipe gripping tool	US3653284D	1970-10-27	US3653284A	1972-04-04	PYNCHON GEORGE O; HULSE JAMES H JR
The invention relates to a vice-grip plier having rest surfaces adapted to maintain the pliar in a horizontal plane on the top end of a well casing while holding a plastic pipe, being inserted into the casing, in a vertical plane centered in the casing.
82	New device for handling elongated members	US3651959D	1970-05-13	US3651959A	1972-03-28	CASTELA ANDRE; JOUBERT PHILIPPE
Device for handling rigid elongated members such as drill string elements by transferring the same from a horizontal storage location to a vertical position where they are assembled to the drill string or vice versa, comprising a carriage with gripping means for taking said elements from their storage position and holding them, rollers fastened to said carriage and cooperating with guiding paths, comprising upper rollers for driving the nearest end of said carriage with respect to said vertical position along a first inclined path terminating with a vertical portion in line with said vertical position, lower rollers for driving the farthest end of said carriage with respect to said vertical position along a generally horizontal path above the storage location and rollers at an intermediate level taking their bearing on a second inclined path with a smaller inclination as the first one, for driving an intermediate point of said carriage between said nearest end and said farthest end, substantially to said vertical position when the upper roller reaches said position.
83	Sonic driving system for bendable lines	US42949065	1965-02-01	US3339646A	1967-09-05	BODINE JR ALBERT G

84	Supporting step	US69023746	1946-08-13	US2437012A	1948-03-02	WHITE RAYMOND J

85	Polish rod clamp	US2242573D		US2242573A	1941-05-20

86	Temper-screw handle bar	US35582229	1929-04-17	US1897854A	1933-02-14	MERL MYERS; CARLIN MYERS

87	Friction grip for drilling machines	US60637232	1932-04-20	US1888669A	1932-11-22	ALBERT HOSSFELD

88	Pipe clamp or dog	US54724331	1931-06-27	US1866075A	1932-07-05	GEORGE BANNAN

89	Line lift	US44404130	1930-04-14	US1864802A	1932-06-28	CLARK HARRY E

90	Wire rope twist equalizer	US45818030	1930-05-31	US1849924A	1932-03-15	HALL FRED W; EDWARD JOHNSON; RAY HALL WILLIAM

91	Wire line clamp	US36730529	1929-05-31	US1804762A	1931-05-12	GARDEN HENRY E

92	Rod grip	US1735937D		US1735937A	1929-11-19

93	Polish-rod grip	US74978624	1924-11-13	US1703201A	1929-02-26	MELAT HENRY A

94	Polished rod clamp	US10828126	1926-05-11	US1679028A	1928-07-31	GALLMAN CHARLES E

95	Polished-rod grip	US15685626	1926-12-24	US1622331A	1927-03-29	MAHAN JOSEPH R

96	Polish-rod clamp	US6115025	1925-10-07	US1578696A	1926-03-30	WRIGHT CLYDE S

97	Polish-rod clamp	US1393525	1925-03-07	US1569327A	1926-01-12	LINTHWAITE OWEN C

98	Bail construction for grips and the like	US2464825	1925-04-20	US1563657A	1925-12-01	RATIGAN JAMES P

99	Wire-rope drilling clamp	US75113424	1924-11-20	US1558392A	1925-10-20	PORTER ROBERT L

100	Clamp	US2583725	1925-04-25	US1553855A	1925-09-15	GARNER BERNARD J

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