Low friction power tong jaw assembly

Details Low friction power tong jaw assembly Low friction power tong jaw assembly

1997-05-23

1998-10-13

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 5718, B25B 1350

Patent

active

058196056

ABSTRACT:
The present invention provides an improved power tong jaw having a jaw body with a roller aperture formed therein. A jaw roller is positioned in said roller aperture by some type of retaining surface, such as a roller pin. Additionally, a friction reducing surface is formed between the jaw roller and the jaw pin. In one embodiment, this friction reducing surface comprises a plurality of needle bearings. In alternate embodiments, the friction reducing surface comprises ball bearings, journal bearings, or recirculating ball bearings.

REFERENCES:
patent: 4649777 (1987-03-01), Buck
patent: 4709599 (1987-12-01), Buck
patent: 5435213 (1995-07-01), Buck

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