US 9,387,543 B2Granted

Unibit re-sharpening device

OwnerRichard Sommerfelt, Maureen Sommerfeltinventors

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Abstract

A unibit re-sharpening device for reconditioning the surface of worn unibits by filing them in a tapered recess. The unibit re-sharpening device comprises a device housing having a tapered recess with a diamond infused file therein, with the file connected to an integrated electric motor and high frequency mechanical vibrator, with an attachable collet for securing a conventional unibit in the tapered recess. In use, a unibit is secured in the collet and the collet is placed in the tapered recess. The power switch is then turned on, causing the motor and vibrator to vibrate the file and resulting in material being cut from the cutting edge or face of the unibit by the vibrating file. While the file is vibrating, a user can rotate the unibit to expose its whole conical surface to the file, thereby sharpening the entire unibit.

Claims5

Dependent claims

A unibit re-sharpening device for reconditioning the surface of worn unibits, comprising:

a device housing having a top surface and an integrated power source, wherein said top surface includes a top surface aperture;
a tapered recess extending into the device housing from the aperture;
an attachable collet configured to hold a unibit and be secured over the tapered recess such that a unibit being held extends into the tapered recess;
an integrated motor and vibrator disposed in the device housing and connected to said power source;
and
a tapered file connected to said integrated motor and vibrator such that it vibrates when the integrated motor and vibrator disposed are supplied electricity from the power source, wherein said tapered file is disposed in the device housing such that it extends into the tapered recess such that it contacts the surface of a unibit held in the tapered recess by the collet.

3 more elements

Dependencies are inferred from the claim text.