Power tong

Details Power tong Power tong

2004-11-19

2009-08-11

Shakeri, Hadi (Department: 3727)

Tools

Wrench, screwdriver, or driver therefor

Machine

C081S057190, C081S057210

Reexamination Certificate

active

07571667

ABSTRACT:
A power tong for use during installation and dismantling of pipes when drilling in the ground, such as is known from e.g. petroleum production, comprising a drive ring and at least one clamping device, where the clamping device is arranged to grip a pipe string, the power tong being equipped with a driving mechanism for rotation of the clamping device about the longitudinal axis of the pipe string, and where the clamping device communicates with a fluid supply via a swivel ring that encircles the drive ring.

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patent: 2352667 (2001-02-01), None
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patent: WO 01/51763 (2001-07-01), None
Intl Prel Rpt Nov. 24, 2005.
Written Opinion Mar. 29, 2005.

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