Variable rack adjustment assembly for pipe spinning machines

Details Variable rack adjustment assembly for pipe spinning machines Variable rack adjustment assembly for pipe spinning machines

2005-08-30

2005-08-30

Thomas, David B. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Machine

C081S057170, C081S057330

Reexamination Certificate

active

06935210

ABSTRACT:
A cam-operated, rack-on-rack adjustment assembly on a drill pipe spinner allows the user to easily and in small increments (distances) (three-eighths inch, one-quarter inch or less, or more) adjust the effective pipe engaging length of the drive chain. In other words, the effective length of chain wrap (the amount that grips the pipe) given the pipe size can be adjusted.

REFERENCES:
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Hawk Industries, Inc., Hawkjaw Operation, Maintenance and Service Manual Model 65K-MA, Apr. 1997, pp. 1-137, USA.
Hawk Industries, Inc., Hawkjaw Operation, Maintenance and Service Manual Model 100K-ALS, Rev 12.99.92.00, published circa Dec. 1999, pp. 1-159, USA.

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