Method of making an open-head power tong assembly

Details Method of making an open-head power tong assembly Method of making an open-head power tong assembly

2011-08-09

2011-08-09

Cozart, Jermie E (Department: 3726)

Metal working

Method of mechanical manufacture

Converting

C029S428000, C029S700000, C081S057150, C081S057330

Reexamination Certificate

active

07992274

ABSTRACT:
A method of making an open-head power tong assembly includes the steps of providing a power tong assembly that has a first case assembly and a transmission assemble. A second case assembly is provided that includes a casing having a sidewall with a plurality of supporting ribs, a base wall, and a top plate that define an interior region that is adapted to receive a pinion gear, a conversion shaft having first and second axial end portions, and an open-head tong assembly. The first case assembly is removed from the transmission assembly of the power tong assembly to expose a transmission shaft. The transmission shaft is removed to expose a transmission shaft opening. The second case is mounted to the transmission assembly such that the second axial end of the conversion shaft is engaged with the transmission shaft opening.

REFERENCES:
patent: 4401000 (1983-08-01), Kinzbach
patent: 6058811 (2000-05-01), Stuart
patent: 6327938 (2001-12-01), Pietras
patent: 6829967 (2004-12-01), Kemp
patent: 7069817 (2006-07-01), Wesch, Jr.
BJ Hughes, Power Tong Transmission Assembly, 2 pages, Admitted Prior Art.

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