The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 19, 1989
Filed:
Oct. 06, 1988
Keith M Haney, Wichita Falls, TX (US);
Jerry K Lingafelter, Wichita Falls, TX (US);
W-N Apache Corporation, Wichita Falls, TX (US);
Abstract
Compact casing tongs include a tube which is secured to a connector, the connector in turn being supported and rotated by a quill of a top head drive assembly. The lower end of the tube regidly supports a set of cams which define multiple recesses. A jaw is mounted in each recess, and each of the jaws is connected to a brake ring positioned outside the tube. By externally braking the brake ring while the quill connector body is rotated the jaws are shifted out of the recesses to grip the exterior of a casing positioned within the tube. The tube is dimensioned to ensure that the jaws engage the body of the casing beneath the upper collar of the casing.