Torque transducing attachments for air-driven impact tools

Details Torque transducing attachments for air-driven impact tools Torque transducing attachments for air-driven impact tools

1984-09-11

1986-07-01

Ruehl, Charles A.

Measuring and testing

Dynamometers

Responsive to torque

7386223, G01L 312, B25B 2314

Patent

active

045972966

ABSTRACT:
A torque transducing attachment (2) can be fastened to a air-driven impact tool (8) at its rear end. A shaft (20) in bearings (16) in a housing (12) has a torque transformable part (22) with integral bushes (24, 26) with apertures (29) on either side. The relative displacement under torque of the apertures (29) varies the amount of light transmitted from a stabilized LED source (36) to a photo detector (46) and the resulting signal is passed through frequency responsive network.

REFERENCES:
patent: 3625055 (1971-12-01), Lafourcade
patent: 3938890 (1976-02-01), Flavell
patent: 3940979 (1976-03-01), Ward et al.
patent: 4055080 (1977-10-01), Farr et al.
patent: 4345481 (1982-08-01), Schroyer
patent: 4446746 (1984-05-01), Aoshima et al.

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