Clutch mechanism in power driven screwdriver

Details Clutch mechanism in power driven screwdriver Clutch mechanism in power driven screwdriver

1995-02-02

1996-10-29

Marmor, Charles A.

192 clutches and power-stop control

Clutches

Automatic

192 5656, 81429, 81474, B25B 2100

Patent

active

055688497

ABSTRACT:
A power driven screwdriver including a housing, a spindle rotatably and axially movably disposed within the housing, a motor for driving the spindle, and a clutch mechanism interposed between the motor and the spindle. The clutch mechanism includes a drive clutch member rotatably driven by the motor, a driven clutch member rotatable with the spindle, and a drive clutch shifting mechanism. The drive clutch shifting mechanism is operable to move the drive clutch member from a first position to a second position spaced from the first position in a forward direction toward the driven clutch member when the driven clutch member is brought to engage the drive clutch member. The drive clutch shifting mechanism is also operable to move the drive clutch member from the second position to the first position when the driven clutch member is brought to be disengaged from the drive clutch member.

REFERENCES:
patent: 2167749 (1939-08-01), Grohn
patent: 2196589 (1940-04-01), Jimerson
patent: 2224440 (1940-12-01), Lewis
patent: 2940488 (1960-06-01), Riley
patent: 3527273 (1970-09-01), Falter
patent: 4546833 (1985-10-01), Berecz et al.
patent: 4655103 (1987-04-01), Schreiber et al.
patent: 4809572 (1989-03-01), Sasaki
patent: 5134909 (1992-08-01), Sasaki
patent: 5138916 (1992-08-01), Sato et al.
patent: 5271471 (1993-12-01), Sasaki

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