Tong unit with cage plate having removable window section

Details Tong unit with cage plate having removable window section Tong unit with cage plate having removable window section

2011-06-21

2011-06-21

Thomas, David B (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Machine

Reexamination Certificate

active

07963196

ABSTRACT:
A tong unit having a ring gear, an upper cage plate, and a jaw assembly is disclosed. The cage plate has a removable window section, through which the jaw assembly may be inserted into and removed from the central opening in the ring gear. The jaw assembly may be attached to the removable window section, so that the window section and the jaw assembly can be lifted out and inserted together.

REFERENCES:
patent: 6223629 (2001-05-01), Bangert
patent: 2008/0202291 (2008-08-01), Bouligny et al.

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