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US 2007/0184760 A1Published application
Lawnmower Blade Sharpener
OwnerDon Cottoninventor
Life of this patent
Estimating the term…
Abstract
In one embodiment, a method of sharpening reel blades on a lawnmower reel includes positioning a grinding wheel in contact with the reel, rotating the grinding wheel about an axis of rotation, linearly translating the grinding wheel along a longitudinal path. and rotating the reel about its longitudinal axis. The axis of rotation of the grinding wheel is transverse to a longitudinal axis of the reel.
Claims23
A method of sharpening reel blades on a lawnmower reel, the method comprising:
- positioning a grinding wheel in contact with the reel so that an axis of rotation of the grinding wheel is transverse to a longitudinal axis of the reel;
- rotating the grinding wheel about its axis of rotation;
- linearly translating the grinding wheel along a longitudinal path;
- and
- rotating the reel about its longitudinal axis.
2 more elements
A lawnmower blade sharpener, comprising:
- a supporting frame;
- a carriage assembly coupled to the supporting frame, the carriage assembly including a longitudinally extending railway and a carriage slidably mounted on the railway;
- a grinding wheel coupled to the carriage, the grinding wheel having an axis of rotation that is transverse to the railway;
- and
- a powering device coupled to the grinding wheel, the powering device being configured to rotate the grinding wheel about the axis of rotation.
2 more elements
A lawnmower blade sharpener comprising:
- a grinding wheel having an axis of rotation;
- means for rotating the grinding wheel about the axis of rotation;
- and
- means for moving the grinding wheel along a path of linear translation, the path of linear translation of the grinding wheel being transverse to the axis of rotation of the grinding wheel, such that when a lawnmower reel is placed in the sharpener with a longitudinal axis of the reel extending along the path of linear translation, the axis of rotation of the grinding wheel is transverse to the longitudinal axis of the reel.
1 more element
A method of sharpening a rotary lawnmower blade comprising:
- positioning a lip of a cupped grinding wheel in contact with a cutting surface of a rotary blade, an axis of rotation of the cupped grinding wheel being perpendicular to the cutting surface of the rotary blade;
- rotating the cupped grinding wheel about its axis of rotation;
- linearly translating the cupped grinding wheel along a longitudinal path, the longitudinal path being substantially perpendicular to a longitudinal length of the rotary blade.
Dependencies are inferred from the claim text.