Abstract An improved safety razor blade having a cutting edge in the form of a continuous series of substantially sinusoidal micro-waves which provide more cutting surface per unit of length than a smooth- or straight-edged blade and which achieve maximum closeness and comfort of shaving action without angling the blade to the direction of the shaving stroke. The improved blade is adaptable to most of the standard safety razors utilizing either single- or double-edge blades, as well as those of the narrow band or reel type flexible blades. For optimum results, the micro-waves of the cutting edges of the blades are very minute and preferably range in wave depth from crest to trough on the order of between 0.0005 inch minimum depth to about 0.0050 inch maximum depth, and the waves numbering on the order from between about 100 or 200 per inch to about 20 per inch of blade length.
A safety razor blade having a cutting edge of minutely scalloped form and conforming to a continuous and uniform series of sinusoidal micro-waves all lying wholly in the plane of the flat blade body, with the troughs between each adjacent pairs of wave crests being of a size approximating the size of an individual human facial hair, said waves ranging in number on the order of between about 100 and 200 per inch of blade length, and the depth from crest to trough ranging on the order of between 0.0005 inch and 0.0050 inch.
Claim 2
Dependent Claim
94 words
A safety razor blade having a cutting edge of minutely scalloped form and conforming to a continuous and uniform series of sinusoidal micro-waves all lying wholly in the plane of the flat blade body, with the troughs between each adjacent pairs of wave crests being of a size approximating the size of an individual human facial hair, said waves ranging in number on the order of between about 100 and 200 per inch of blade length, and the depth from crest to trough ranging on the order of between 0.0005 inch and 0.0050 inch.