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US 9,440,325 B2Granted
Adaptable abrasive cutting assembly for sharpener
AssigneeSmith's Consumer Products, Inc.
InventorsRichard S Smith, Louis P. Chalfant
Life of this patent
Estimating the term…
Abstract
An electric sharpener having a pair of abrasive wheel assemblies including energy absorbing hubs mounted a powered drive shaft and further integral flexible radially extending arms affixed to respective outer abrasive rings. A pair of disk abrasives assemblies are also affixed to the powered rotatable shaft and include a pair of flexible metal disks operatively connected to a hub attached to the rotatable shaft.
Claims6
A self-powered electric sharpener for sharpening the edge of a tool comprising
- an abrasive wheel assembly being mounted on a powered rotatable shaft,
- said abrasive wheel assembly having a flexible hub affixed against movement relative to said rotatable shaft,
- a peripheral abrasive ring operatively connected to said flexible hub by a radially extending, non-abrasive central portion for rotation for sharpening the edge of a tool,
- an inner portion of said non-abrasive central portion being flexibly affixed to said flexible hub and an outer portion of said non-abrasive central portion being affixed to said to said peripheral abrasive ring, and
- said flexible hub allowing said inner portion and hence said abrasive ring to deflect relative to the flexible hub by an amount determined by the force applied to said peripheral ring by the tool being sharpened to absorb the force transmitted to said rotatable shaft and to maintain the rotational speed of said rotatable shaft generally constant.
2 more elements
A self-powered electric sharpener for sharpening the edge of a tool comprising
- an abrasive disk assembly being mounted on a powered rotatable shaft, said abrasive disk assembly having a deformable abrasive disk being affixed to said powered rotatable shaft,
- said disk having at least a peripheral portion for contacting the tool being sharpened,
- said disk being deformable to cause flexed deflection of at least said peripheral portion of said disk by an amount of deflection being determined by the force applied to said at least peripheral portion of said disk by the tool being sharpened for maintaining the rotational speed of said rotatable shaft generally constant during sharpening.
Dependencies are inferred from the claim text.