Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Magnetic or suction means
Patent
1988-02-08
1990-01-09
Bilinsky, Z. R.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Magnetic or suction means
408 72R, B23B 4700
Patent
active
048924474
ABSTRACT:
The present invention discloses a torque restraining device to resist the lateral shifting or rotation of a self adhering drill unit due to the torque generated by the drill motor. The torque restraining device includes a penetrating member mounted on the bottom of the drill unit for penetrating the work surface to prevent rotation of the drill unit during use. The penetrating member is embedded by the action of the drill unit being pulled to the work surface when the mounting base of the drill unit is activated. In the preferred embodiments, a protective sleeve is reciprocally mounted about the penetrating member to encase the penetrating member to prevent damage when the base is not activated. Upon activating the base, the sleeve retracts to expose the penetrating member for penetration into the work surface. The protective sleeve or glide post protects the conical end of the penetrating member and when the base is not activated lifts the rear of the drill unit from the work surface to disengage the penetration member and to facilitate easy sliding of the drill unit. In a further embodiment of the invention, a driving means is included to facilitate penetration.
REFERENCES:
patent: 2826950 (1958-03-01), McClintock
patent: 4261673 (1981-04-01), Hougen
patent: 4440052 (1984-04-01), Weisbeck
Bilinsky Z. R.
Gossett Dykema
Hougen Everett D.
Schultz R. S.
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