Tool driving or impacting – Drive adjustable to completely change kind of drive – Adjustable to impacting device
Patent
1992-10-30
1994-09-06
Smith, Scott A.
Tool driving or impacting
Drive adjustable to completely change kind of drive
Adjustable to impacting device
173178, B23B 4516
Patent
active
053439619
ABSTRACT:
The present invention provides a power-driven rotary tool having an improved power transmission mechanism which has little frictional resistance against a spindle rotatable about and reciprocating along a longitudinal axis. The power-driven rotary tool of the invention includes: a spindle rotatably mounted in a housing for receiving rotation of a transmission shaft; a fixed clutch member idly rotatably mounted on the spindle; a movable clutch member mounted on the spindle to face the fixed clutch cam; a coil spring for pressing the movable clutch member towards the fixed clutch member; and a motor for rotating the fixed clutch member. The spindle has three ball spline grooves and the movable clutch member has three ball grooves. The movable clutch member is coupled with the spindle to be rotatable integrally therewith and reciprocate along a longitudinal axis via three balls. The tool further includes an impact mechanism disposed on the rear end of the spindle for imparting axial reciprocating movement to the spindle. The impact mechanism includes a fixed cam member being fixed to the housing and having a cam face on the front end thereof; and a movable cam member being mounted on the spindle to be rotatable with the spindle and having a cam engagement face for slidably engaging with the cam face of the fixed cam member.
REFERENCES:
patent: 3494429 (1970-02-01), Amtsberg et al.
patent: 3799275 (1974-03-01), Plattenhardt et al.
patent: 3809168 (1974-05-01), Fromm
patent: 4161242 (1979-07-01), Moores, Jr. et al.
patent: 4232749 (1980-11-01), Rohrback
patent: 4418766 (1983-12-01), Grossmann
patent: 4428438 (1984-01-01), Holzer
patent: 4823885 (1989-04-01), Okumura
Makita Corporation
Smith Scott A.
LandOfFree
Power transmission mechanism of power-driven rotary tools does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Power transmission mechanism of power-driven rotary tools, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power transmission mechanism of power-driven rotary tools will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1324077