Patrick Callihan resumes & CV records
Resumes
Owner / Consultant At Deep International
Location:
Houston, Texas Area
Industry:
Oil & Energy
Patrick R Callihan, 7314106 Manderly Dr, Houston, TX 77077
Patrick Callihan Phones & Addresses
14106 Manderly Dr, Houston, TX 77077 281-7598957
4103 Bayshore Dr, Bacliff, TX 77518 281-3391247 281-3396031
Escondido, CA
Kemah, TX
Lafayette, LA
San Diego, CA
Social networks
Patrick R Callihan
Linkedin
Industries
Oil & Energy
Mentions for Patrick R Callihan
Publications & IP owners
Us Patents
Power Tong And Back-Up Tong Assembly
US Patent:
4445402, May 1, 1984
Filed:
Feb 25, 1982
Appl. No.:
6/352244
Inventors:
Garth M. Farr - Kingwood TX
Patrick R. Callihan - Houston TX
Patrick R. Callihan - Houston TX
Assignee:
Farr Oil Tool, Inc. - Houston TX
International Classification:
B25B 1700
US Classification:
81 5716
Abstract:
A power tong and back-up tong assembly is comprised of a power tong having a rotatable cam surface which cooperates with jaw assemblies to grip and rotate a first pipe and a back-up tong having a fixed cam ring and jaw assemblies which are rotated against the cam ring in the same direction as the cam surface of the power tong rotates until an initial grip is achieved on a second pipe which is to be held while the first pipe is threaded or unthreaded relative thereto.
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