Pneumatic tool with sectional adjustment of torsional force

Details Pneumatic tool with sectional adjustment of torsional force Pneumatic tool with sectional adjustment of torsional force

2011-06-14

2011-06-14

Smith, Scott A. (Department: 3721)

Tool driving or impacting

Impacting devices

With anvil arranged to transmit torsional impact to tool

C173S168000, C173S169000

Reexamination Certificate

active

07958945

ABSTRACT:
The present invention provides a pneumatic tool enabling sectional adjustment of torsional force, including a main body and a cylinder mounted into the accommodation space of main body. The cylinder is fitted with air vents and also a rotor. A plurality of exhaust holes is arranged at one side of the cylinder tube of the cylinder. An exhaust duct switching member is arranged between the exhaust holes of the cylinder tube and air exhaust duct of the main body and used to switch the airflow for air exhaust by different exhaust holes. The pneumatic tool enables sectional adjustment of its torsional force, thus promoting the torsional force efficiently with better applicability.

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patent: 7753136 (2010-07-01), Lu

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