Tool driving or impacting – Work cleansing – Cleansing fluid pump operated by drive
Patent
1978-02-02
1980-03-11
Staab, Lawrence J.
Tool driving or impacting
Work cleansing
Cleansing fluid pump operated by drive
173 57, 175207, B25D 1714
Patent
active
041923901
ABSTRACT:
A power tool, particularly a hammer drill, is equipped with a blower which is mounted on the output shaft of the motor which drives the tool element which is clamped in the chuck of the power tool. The particulate material which is removed by the tool element from a structure is entrained in a stream of air generated by the blower and conveyed toward the latter. Before the particulate material enters the blower, at least most of it impacts an impact member which extends across an inlet section of the conduit through which the stream of air passes, so that the impact member deprives the entrained particulate material at least of the greater part of the kinetic energy possessed thereby, before the particulate material reaches the blower and damages the same due to its high kinetic energy. The particulate material entrained in the stream of air may be collected in a collecting receptacle which is detachably connected to the power tool, and a plate-shaped filter may be arranged between the space bounded by the receptacle and the downstream portion of the conduit, being supported on a grid of pins which between themselves define openings which communicate with the downstream portion of the conduit.
REFERENCES:
patent: 3511322 (1970-05-01), Bixby et al.
patent: 3638737 (1972-02-01), Moates
patent: 3788423 (1974-01-01), Nittinger et al.
patent: 3850254 (1974-11-01), Hirdes
patent: 4064952 (1977-12-01), Lechner
Reibetanz Wilbert
Wanner Karl
Robert & Bosch GmbH
Staab Lawrence J.
Striker Michael J.
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