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US 8,627,747 B2Granted
Device for treating blades to improve their cutting properties
OwnerCelso E. Martellinventor
Life of this patent
Estimating the term…
Abstract
A treatment device for improving the cutting properties of the blade of a non-electric shaving razor. The device has a treatment surface for interacting with the cutting edge of the razor blade, as the blade is put into sliding contact with the treatment surface. The treatment surface has a plurality of resilient honing projections that are compressed as the blade is moved in sliding contact with the surface.
Claims24
A device for treating a blade of a manual razor, the blade having a cutting edge, the device comprising:
- a. a treatment surface made of resilient material for interacting with the cutting edge when the blade is in sliding contact with the treatment surface to provide a non-abrading treatment of said cutting edge, the treatment surface including a plurality of resilient projections having a base portion and a tip portion said treatment surface having an edge direction and a direction transverse to said edge direction, the resilient projections having a height less than about 1 millimeter and are arranged on the treatment surface to have, in a length of 1 millimeter in said transverse direction, a number of resilient projections in a range of 1 to 5;
- b. the resilient projections defining a discontinuous contact surface with the blade during the sliding contact.
A device for treating a blade of a manual razor, the blade having a cutting edge, the device comprising:
- a. a treatment surface made of resilient material, having a resiliency of less than 70 according to shore A or 00 scale in the ASTM D2240 standard, for interacting with the cutting edge when the blade is in sliding contact with the treatment surface to provide a non-abrading treatment of said cutting edge, the treatment surface including a plurality of resilient projections having a base portion and a tip portion, said treatment surface having an edge direction and a direction transverse to said edge direction the resilient projections having at least one segment obliquely oriented relative to the transverse direction and having a height less than about 1 millimeter and being arranged on the treatment surface to have, in a length of 1 millimeter in said transverse direction, a number of resilient projections in a range of 1 to 5 such as to provide sufficient pressure on the blade to substantially restore an original shaped of the cutting edge during sliding contact;
- b. the resilient projections defining a discontinuous contact surface with the blade during the sliding contact.
Dependencies are inferred from the claim text.