Abstract:
This invention employs a serrated or scalloped edge (7) on the undercutter of an electric razor to enhance the shaving performance. This improvement is achieved by promoting hair capture and retention and reducing the cutting forces required to sever the hair. The serrations and/or scallops (9) help retain the captured hair, thereby increasing hair cutting efficiency. They also reduce the tendency for the hair to "roll" along the edge of the foil aperture until it is trapped in the aperture angle; this promotes a closer shave. A serrated edge can be generated by various methods. In this disclosure, several possible methods are described. The preferred method of fabrication is to generate a weld bead on the outer surface of an undercutter blade and grind back the bead to generate sharp edges along the weld bead. In doing so, the weld bead produces a serrated pattern. The geometry of the serration is determined by the geometry of the weld bead.
Abstract:
Dry-shaving apparatus comprises a drive provided in a housing (1) and at least two parallel shaving units (13, 14, 15), each having a respective outer cutter (16, 17, 20), an inner cutter (21, 22, 34) and at least one biasing element (31, 32, 33, 45). In order to improve contact with the face during use, the biasing element (31, 32) of one shaving unit (13, 14, 15) has a characteristic which differs from that of the biasing element (33) of a further shaving unit (13, 14, 15), which characteristic is such that under the effect of a force applied externaly to the shaving units (13, 14, 15), motion can be performed by said one of the shaving units (13, 14, 15) relative to the further shaving unit (13, 14, 15).
Abstract:
The invention relates to a lower blade assembly for a dry shaver as well as to a dry shaver, which has an upper blade (5) equipped with openings and a motor for driving the upper blade and the lower blade assembly so as to oscillate with respect to one another, wherein the lower blade assembly has at least a first (10, 20; 30, 40) and a second (20, 10; 40, 30) lower blade, wherein the one blade (20, 10; 40, 30), which trails a blade that is leading (10, 20; 30, 40) in the movement direction, is provided for separating a hair protruding into the opening of the upper blade.
Abstract:
Die Erfindung bezieht sich auf ein Untermesser (4), welches zusammen mit einem zugeordneten Obermesser (6) den Scherkopf eines Trockenrasierapparates bildet. Das Obermesser ist als Lochfolie (6) ausgebildet, die das Untermesser (4) zumindest teilweise umgibt und gegen dieses vorgespannt ist. Das Untermesser (4) besitzt mehrere voneinander beabstandete in Form von Streifen zwischen zwei Randbereichen (9, 10) Schneidkanten (12, 13) aufweisende Klingen. Das Untermesser (4) ist im Querschnitt im wesentlichen U-förmig ausgebildet. Die Breite des Streifens von den beiden Randbereichen (9, 10) zur Mitte (Z) hin verjüngt sich monoton.
Abstract:
A cutter assembly for a dry shaver, comprising an elongate carrier member (221); and a cutter element (1210) having a plurality of turns forming a helix, each having an arcuate cutting portion (1211) and an arcuate mounting portion following sequentially along the helix; said carrier member being disposed substantially parallel to the axis (D-D) of said cutter element; and said carrier member contacting and supporting the mounting portions of the turns and leaving the cutting portions as free-span arches.
Abstract:
Die Erfindung bezieht sich auf ein Untermesser (1) für einen oszillierend angetriebenen Scherkopf eines Rasierapparats. Das erfindungsgemässe Untermesser (1) weist eine Vielzahl von Klingen (3) auf, die jeweils zu Paaren benachbarter Klingen (3) gruppiert sind, bei denen auf einander zugewandten Seiten der Klingen (3) erste Schneidkanten (4) zum Durchtrennen von Haaren (9) ausgebildet sind. Die Besonderheit des erfindungsgemässen Untermessers (1) besteht darin, dass auf voneinander abgewandten Seiten der beiden Klingen (3) eines jeden Paares zweite Schneidkanten (5) zum Durchtrennen von Haaren (9) ausgebildet sind, die eine geringere Schnittwirkung als die ersten Schneidkanten (4) aufweisen.
Abstract:
Described is a lower cutter (1) for the head (SK), also fitted with an upper cutter (2), of an electric razor (4). The lower cutter has several parallel blades (5) formed between notches (7) in a flat-section bar (6), essentially at right angles to the longitudinal axis of the bar, the bottoms (8) of the notches (7) being rounded. The blade thickness (D) decreases from the apex (SP) of the curve at the bottom of each notch (7) to the line (SL) joining the points of the blades. The reduction in blade thickness (D) extends from the point (SP) over a distance (B) which is greater than half the distance (A) between two adjacent blades along the line (SL).
Abstract:
Dry-shaving apparatus comprises a drive provided in a housing (1) and at least two parallel shaving units (13, 14, 15), each having a respective outer cutter (16, 17, 20), an inner cutter (21, 22, 34) and at least one biasing element (31, 32, 33, 45). In order to improve contact with the face during use, the biasing element (31, 32) of one shaving unit (13, 14, 15) has a characteristic which differs from that of the biasing element (33) of a further shaving unit (13, 14, 15), which characteristic is such that under the effect of a force applied externaly to the shaving units (13, 14, 15), motion can be performed by said one of the shaving units (13, 14, 15) relative to the further shaving unit (13, 14, 15).
Abstract:
This electric razor (1) includes: outer blades (32); inner blades (50); and an entry-inhibiting part (70). The inner blades (50) are provided so as to define an inner-blade hole (53) and an inner-blade internal space (54) communicating with the inner-blade hole, and so as to move translationally or rotationally with respect to the outer blades (32). The entry-inhibiting part (70) is disposed in the inner-blade internal space (54), in a position capable of coming into contact with skin, and is exposed to the exterior of the internal blades (50) via the inner-blade hole (53). The area of a tip section (72A) of the entry-inhibiting part (70) in a planar view of the internal blades (50) is smaller than the area of a base section (71) of the entry-inhibiting part (70) in the planar view of the internal blades (50).