Torque impact wrench

Details Torque impact wrench Torque impact wrench

2007-09-04

2007-09-04

Thomas, David B. (Department: 3723)

Tools

Including tool driving by impact delivering component or...

Structurally constrained to arcuate movement

C173S091000

Reexamination Certificate

active

11303122

ABSTRACT:
A torque impact wrench having an elongated tubular metal housing. The front end of an impact wrench is secured to the rear end of the housing by a motor mount. The front end of the drive shaft of the impact wrench is inserted into the rear of an impact socket. The rear end of a drive screw is received in the front end of the impact socket. The drive screw has external threads on its rear portion and external threads on its front portion. The drive screw passes through a screw drive nut whose bore is internally threaded. The drive screw is rigidly secured in the steel housing. The front end of the steel housing has a first load disc closing that end and it removably receives the lower crimping die. A second load disc is longitudinally spaced from the first load disc and it also has a crimping die removably secured thereto. A third load disc is screwed onto the front end of the drive screw. The rotational motion of the drive shaft of the impact wrench translates into an axial motion that closes the crimping dies together as the external threads on the front end of the drive screw are threaded onto the internal threads of the screw drive nut. The torque impact wrench can be modified to straighten shafts, function as a shearing mechanism, act as a gear puller and be used for other operations.

REFERENCES:
patent: 5025869 (1991-06-01), Terunuma et al.
patent: 5628105 (1997-05-01), Fallandy et al.

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