Tool driving or impacting – Impacting devices – With means for rotating tool
Patent
1986-01-31
1988-01-19
Bell, Paul A.
Tool driving or impacting
Impacting devices
With means for rotating tool
173116, 173123, 74 60, B25D 1110
Patent
active
047199768
ABSTRACT:
A hammer drill is provided with a clutch whose movable part is firmly connected to an axially displaceable drum which supports a wobbling disc driving a percussive mechanism for striking a work tool. The axially fixed clutch part is rotated by driving motor and is backed-up by a housing of the drill. Retroacting forces from the percussive mechanism are transferred via the drum onto the movable clutch part so that the engagement of the clutch is reinforced at the moment when the compression generated by percussive mechanism is maximum. When pressure applied on work tool is relieved, a separating spring disengages the clutch and braking surfaces on the drum limit its axial displacement and brake the rotation of the wobbling disc.
REFERENCES:
patent: 2042168 (1936-05-01), Campbell
patent: 4325436 (1982-04-01), Richter et al.
patent: 4529044 (1985-07-01), Klueber et al.
patent: 4537264 (1985-08-01), Schmid et al.
Bleicher Manfred
Bohne Ulrich
Wanner Karl
Bell Paul A.
Robert & Bosch GmbH
Striker Michael J.
Wolfe James L.
LandOfFree
Hammer drill does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hammer drill, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hammer drill will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-368075