Percussive drill with safety interlock for reversing gear

Details Percussive drill with safety interlock for reversing gear Percussive drill with safety interlock for reversing gear

1980-07-03

1984-01-31

Schroeder, Werner H.

Tool driving or impacting

Drive adjustable to completely change kind of drive

Adjustable to impacting device

B23B 4516, B25D 1710

Patent

active

044284381

ABSTRACT:
A reversing switch, controlling the direction of rotation of the working spindle of a combination motor-driven hand tool, displaces a rack rod in a direction parallel to the axis of the spindle to provide an interlock both with a percussion boring feature and with provisions for seating attachments on the chuck sleeve of the tool, such as a circular saw. When the percussion boring feature is put into operative position, the rack rod is caused to prevent moving the reversing switch from right-hand rotation to left-hand rotation. When the switch is set for left-hand rotation, the seating surface of the chuck sleeve locks to prevent mounting an attachment and, at the same time, the percussion boring mechanism is blocked in an out-of-service position.

REFERENCES:
patent: 3799275 (1974-03-01), Plattenhardt et al.
patent: 4158970 (1979-06-01), Laughon
patent: 4223744 (1980-09-01), Lovingood
patent: 4229981 (1980-10-01), Macky

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