Title:
POWER TONG WITH REDUCED DIE MARKINGS
Document Type and Number:
WIPO Patent Application WO2005110682
Kind Code:
A3
Abstract:
A power tong (10) rotates a tubular during makeup or breakout of the threaded connection. A tong frame (12), a rotatable ring (20), and a cage plate assembly may each have an open throat for receiving the tubular. A plurality of dies (32) are preferentially manufactured from aluminum, and each have a knurled surface for engaging the tubular. A fluid powered cylinder (54) increases tension between the brake band (50) and the cage plate assembly. Neutral cam portions of the cam surface one positioned radially outward substantially from the makeup and breakout cam portions.
Inventors:
NEVES BILLY W (US)
Application Number:
PCT/US2005/014331
Publication Date:
June 08, 2006
Filing Date:
April 26, 2005
Export Citation:
Assignee:
ECKEL MFG CO (US)
NEVES BILLY W (US)
NEVES BILLY W (US)
International Classes:
B25B13/50; E21B19/16
Foreign References:
| US5172613A | 1992-12-22 | |||
| US6050156A | 2000-04-18 | |||
| US4089240A | 1978-05-16 | |||
| US4986146A | 1991-01-22 | |||
| US20020121160A1 | 2002-09-05 | |||
| US4357843A | 1982-11-09 |
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