Enhanced cutting system for electric dry shavers
First Claim
1. A foil for dry shavers constructed for cooperating engagement with a reciprocating blade assembly having a plurality of blade members, the cutting edges of which are in sliding frictional engagement with one surface of the foil, said foil comprisingA. a substantially flat sheet of thin, flexible material defined bya. a first pair of juxtaposed, spaced, shaver-mounting edges, andb. a second pair of juxtaposed, spaced side edges extending between and interconnecting said shaver-mounting edges;
- B. a plurality of apertures formed in said flexible material,C. said plurality of apertures being aligned in a plurality of rows formed between the juxtaposed, spaced side edges and laterally extending from at least one of said juxtaposed, spaced shaver-mounting edges, each of said rows beinga. parallel to each other, andb. sloped relative to the plane of the cutting edge of the cutting blade cooperatingly associated therewith; and
D. a majority of each of said apertures of each of said rows being aligned with the corresponding aperture of each alternating, adjacent rowa. forming an elongated, longitudinally extending, substantially straight line of coincidence for each of said plurality of aligned apertures, andb. each of said lines of coincidence being parallel to each other and substantially perpendicularly to the planes of the cutting edges of the cutting blades, whereby an apertured foil is achieved having a natural radius of curvature, the axis of which is parallel to or coincident with the axis of reciprocation along which the blade assembly moves, thereby enabling the foil to surroundingly embrace the arcuate cutting edges of the blade assembly in close, continuously following engagement.
7 Assignments
0 Petitions
Accused Products
Abstract
By providing an apertured foil for dry shavers having a natural radius of curvature which is defined by an elongated axis that is parallel to the longitudinal axis of the cutting blade assembly associated therewith, a substantially improved cutting system is attained. By employing the apertured foil of this invention, the apertured foil naturally wraps tightly about the cutting edges of the cutting blades and remains in close, following contacting interengagement therewith during use. In this way, close contacting interengagement of the apertured foil with the cutting edges of the cutting blades is maintained throughout the shaving use and substantially enhanced cutting results and comfort are realized.
8 Citations
15 Claims
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1. A foil for dry shavers constructed for cooperating engagement with a reciprocating blade assembly having a plurality of blade members, the cutting edges of which are in sliding frictional engagement with one surface of the foil, said foil comprising
A. a substantially flat sheet of thin, flexible material defined by a. a first pair of juxtaposed, spaced, shaver-mounting edges, and b. a second pair of juxtaposed, spaced side edges extending between and interconnecting said shaver-mounting edges; -
B. a plurality of apertures formed in said flexible material, C. said plurality of apertures being aligned in a plurality of rows formed between the juxtaposed, spaced side edges and laterally extending from at least one of said juxtaposed, spaced shaver-mounting edges, each of said rows being a. parallel to each other, and b. sloped relative to the plane of the cutting edge of the cutting blade cooperatingly associated therewith; and D. a majority of each of said apertures of each of said rows being aligned with the corresponding aperture of each alternating, adjacent row a. forming an elongated, longitudinally extending, substantially straight line of coincidence for each of said plurality of aligned apertures, and b. each of said lines of coincidence being parallel to each other and substantially perpendicularly to the planes of the cutting edges of the cutting blades, whereby an apertured foil is achieved having a natural radius of curvature, the axis of which is parallel to or coincident with the axis of reciprocation along which the blade assembly moves, thereby enabling the foil to surroundingly embrace the arcuate cutting edges of the blade assembly in close, continuously following engagement. - View Dependent Claims (13, 14, 15)
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2. A foil for dry shavers constructed for cooperating engagement with a reciprocating blade assembly having a plurality of blade members, the cutting edges of which are in sliding frictional engagement with one surface of the foil, said foil comprising
A. a substantially flat sheet of thin, flexible material defined by a. a first pair of juxtaposed, spaced, shaver-mounting edges, and b. a second pair of juxtaposed, spaced side edges extending between and interconnecting said shaver-mounting edges; -
B. a plurality of apertures formed in said flexible material and comprising a substantially rhomic shape, with each side thereof having an overall length of between about 0.012 and 0.020 inches, C. said plurality of apertures being aligned in a plurality of rows formed between the juxtaposed, spaced side edges and laterally extending from at least one of said juxtaposed, spaced shaver-mounting edges, each of said rows being a. parallel to each other, and b. sloped relative to the plane of the cutting edge of the cutting blade cooperatingly associated therewith; and D. a majority of each of said apertures of each of said rows being aligned with the corresponding aperture of each alternating, adjacent row a. forming an elongated, longitudinally extending, line of coincidence for each of said plurality of aligned apertures, and b. each of said lines of coincidence being parallel to each other and substantially perpendicularly to the planes of the cutting edges of the cutting blades, whereby an apertured foil is achieved having a natural radius of curvature, the axis of which is parallel to or coincident with the axis of reciprocation along which the blade assembly moves, thereby enabling the foil to surroundingly embrace the arcuate cutting edges of the blade assembly in close, continuously following engagement. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification