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US 8,616,938 B1Granted
Hand-held blade sharpener
OwnerMark S. Millsinventor
Life of this patent
Estimating the term…
Abstract
A battery-powered, hand-held blade sharpener features a self-adjusting set of guide rollers which widen to accommodate the thickness of the blade being sharpened. First and second semi-circular face plates mount sets of guide rollers, one of the face plates is mounted for pivotal movement and sprig-biased to a “closed jaw” position which the thickness of the blade opens as necessary.
Claims11
A hand-held blade sharpener comprising:
- a) a rotary power tool including
- i) a handle having an opening extending there through;
- ii) a body having securement means for receiving attachments said securement means defining a first longitudinal axis;
- b) a nose piece threadably attachable to said body through said opening in said handle, said nose piece having
- i) a first set of guide rollers affixed thereto at a first angle relative to said first longitudinal axis;
- ii) a second set of guide rollers mounted at a second different angle relative to said first longitudinal axis;
- whereby said first and said second sets of guide rollers engage opposing faces of a blade to be sharpened on either side of a grinder of the rotary power tool.
4 more elements
An attachment for a power tool which has a body with a securement means for receiving attachments to convert said power tool to a hand-held blade sharpener, said attachment comprising
- a) a set of abrasive members;
- b) a nose piece threadably attachable to said body, said nose piece having
- i) a first set of guide rollers affixed thereto at a first angle relative to said first longitudinal axis;
- ii) a second set of guide rollers mounted at a second different angle relative to said first longitudinal axis;
- whereby said first and said second sets of guide rollers engage opposing faces of a blade to be sharpened.
2 more elements
Dependencies are inferred from the claim text.