ApplicationNo. 06/130761 filed on 03/17/1980
US Classes:294/106, Pivoted jaws294/115, Separate sliding operator294/88Magnet- or piston-controlled
ExaminersPrimary: Marbert, James B.
Attorney, Agent or Firm
International ClassesE21B 19/00 (20060101)
E21B 19/14 (20060101)
AbstractA pipe gripping head especially suitable for use with pipe handling apparatus in earth drilling operations. The pipe gripping head includes a pair of jaws operably pivotable between an open and a closed locked position which does not rely on pneumatic or hydraulic pressure to maintain the jaws in the closed position.