Impact wrench structure

Details Impact wrench structure Impact wrench structure

1997-08-04

1999-03-30

Smith, Scott A.

Tool driving or impacting

Impacting devices

With anvil arranged to transmit torsional impact to tool

173 93, B23Q 500

Patent

active

058876669

ABSTRACT:
Disclosed herein is an improved impact wrench structure, particularly an impact wrench for tightening and loosening fasteners for vehicle tires, it has a reversible motor as a power source to drive a drive wheel at a high speed so that flyweight sides of two hammers provided inside the drive wheel bound outwards by a centrifugal force.
The knocking sides of the two hammers drop downwards, impacting and engaging with reception blocks of the transmission shaft and transmit output power to the transmission shaft. Such actions are repeated to perform the expected function of the novel impact wrench for tightening or loosening fastening components. The structure of the novel impact wrench of the present invention is more simple in construction, more practical in application, convenient in production and much saving cost compared to a conventional one.

REFERENCES:
patent: 3605914 (1971-09-01), Kramer
patent: 4947939 (1990-08-01), Hung
patent: 5379851 (1995-01-01), Huang
patent: 5412546 (1995-05-01), Huang
patent: 5435398 (1995-07-01), Juan
patent: 5740892 (1998-04-01), Huang

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