Tightening tool

Details Tightening tool Tightening tool

1993-09-30

1994-12-13

Smith, Scott A.

Tool driving or impacting

Automatic control of power operated means

Drive means responsive to torque or speed condition

192 56R, 81473, B25B 2100

Patent

active

053722060

ABSTRACT:
A tightening tool includes a drive member rotatably driven by a motor. An intermediate member is interposed between the drive member and a spindle and rotatable with the drive member. A claw clutch is formed between the spindle and the intermediate member and is engageable when the spindle is moved axially through abutment of a bit on a work. A connecting mechanism is interposed between the intermediate member and the drive member for permitting rotation of the intermediate member relative to the drive member within a predetermined range. A biasing member normally keeps the rotational position of the intermediate member relative to the drive member. The rotation of the drive member is transmitted to the intermediate member after the drive member is rotated relative to the intermediate member by a predetermined angle when the claw clutch is engaged by movement of the spindle through abutment of the bit on the work.

REFERENCES:
patent: 1744976 (1930-01-01), Levedahl
patent: 3187865 (1965-06-01), Blachowski
patent: 3653802 (1971-04-01), Weiss
patent: 3908766 (1975-09-01), Hess
patent: 4071092 (1978-01-01), Wallace
patent: 4630512 (1986-12-01), Durr
patent: 4655103 (1987-04-01), Schreiber et al.
patent: 4691786 (1987-09-01), Fujita
patent: 4809572 (1989-03-01), Sasaki
patent: 4883130 (1989-11-01), Dixon
patent: 4966057 (1990-10-01), Koppatsch
patent: 4967888 (1990-11-01), Lippacher et al.
patent: 5134909 (1992-08-01), Sasaki

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