Torque delivering power tool

Details Torque delivering power tool Torque delivering power tool

1993-12-03

1995-08-22

Chilcot, Jr., Richard E.

Measuring and testing

Dynamometers

Responsive to torque

7386223, 73791, G01L 100

Patent

active

054429650

ABSTRACT:
A torque delivering power tool for tightening threaded joints to a desired final pretension level, has a motor (11), a power transmission (12) with a reduction gearing (13) and an output shaft (14). A first torque transducer (19) associated with the power transmission (12) is exposed to torque magnitudes corresponding to delivered torque magnitudes up to the desired final pretension level, and an external second torque transducer (20) is arranged to be exposed to load magnitudes which correspond to torque output magnitudes up to a snug level only.

REFERENCES:
patent: 3596718 (1969-07-01), Fish
patent: 3911736 (1975-10-01), Miller
patent: 3920082 (1975-11-01), Dudek
patent: 4030353 (1977-06-01), Shutt
patent: 4060137 (1977-11-01), Bickford et al.
patent: 4384493 (1983-05-01), Grunbaum
patent: 4503713 (1985-03-01), Obayashi et al.
patent: 4989459 (1991-02-01), Faber, Jr.
Patent Abstracts of Japan, vol. 7, No. 221 (M-246) (1366) Sep. 30, 1983 & JP-A-58 114 830 (Nitsutou Seikou K.K.).

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