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US 5,062,322 AGranted
Universal lawn mower blade sharpening machine
OwnerJohn E. Sinkoinventor
Life of this patent
Estimating the term…
Abstract
A self contained electric motor drive lawn mower blade sharpening machine for use in sharpening most conventional rotary lawn mower blades. The machine includes a base for mounting the motor drive with abrasive wheel, and a free-floating blade guide which allows sharpening of unevenly worn blades to a beveled angle of thirty degrees along the contoured cutting edge.
Claims4
A self contained lawn mower blade sharpening machine, said machine comprising;
- (a) base means for the purpose of attachment to a work bench;
- (b) electric motor means attached to said base means via vibration isolators, for the purpose of providing power to a working surface;
- (c) composite abrasive wheel means attached to said motor drive means allowing both sides of the lawn mower blade to be sharpened without machine adjustment;
- and
- (d) a laterally traveling blade guide means attached to said base means for grinding both sides of the lawn mower blade;
- (e) said blade guide means totally enveloping said abrasive wheel means thereby making it virtually impossible for the operators hand to contact the abrasive wheel means.
3 more elements
Dependencies are inferred from the claim text.