Torque tool tester machine

Details Torque tool tester machine Torque tool tester machine

1996-11-05

1997-12-30

Dougherty, Elizabeth L.

Measuring and testing

Instrument proving or calibrating

Dynamometer

73 109, 7386223, G01L 2500

Patent

active

057032777

ABSTRACT:
A torque tool tester machine that includes a reaction means to hold a torque tool to be tested, an electronic torque transducer in rotary driving engagement with a torque transmitting part of the torque tool and a reduction gear train including a manually rotatable input shaft, an output shaft in rotary driving engagement with the transducer, and intermediate shaft and a pair of spur gear wheel with meshed gear teeth on the input and intermediate shafts, a stop plate, an electrically driven operating mechanism to move the stop plate into and out of interfering stopped engagement between advancing and next to meshed gear teeth on the spur gear wheels, an electronic processor connected between the transducer and the operating mechanism and operating to cause the operating mechanism to move the plate into interfering stopped engagement between teeth on the spur gear wheels when a voltage received by it from the transducer is of a predetermined value.

REFERENCES:
patent: 2411931 (1946-12-01), McVey
patent: 3364725 (1968-01-01), Grabovac
patent: 3456485 (1969-07-01), Larson
patent: 4171647 (1979-10-01), Herrgen
patent: 4543814 (1985-10-01), Heilman
patent: 4562722 (1986-01-01), Schuele et al.
patent: 4761989 (1988-08-01), McDevitt
patent: 4852386 (1989-08-01), Grabovac et al.
patent: 5099678 (1992-03-01), Grabovac et al.
patent: 5181425 (1993-01-01), Livingston

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