Guards Patents (Class 30/77)
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Patent number: 5410812Abstract: A razor head having a plastic body with a rear cover and a front guardbar that define surface points for engaging the skin of a user. A razor blade unit is disposed on a support of the body and has at least one cutting edge. A series of strands extend over and perpendicular to the cutting edge, which protrudes by at least 0.02 mm beyond a tangent plane formed by the skin-engaging surface points of the guardbar and the cover.Type: GrantFiled: March 15, 1993Date of Patent: May 2, 1995Assignee: Warner-Lambert CompanyInventor: Wolfgang Althaus
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Patent number: 5369885Abstract: A wet-shaving razor unit having at least one vertically-displaceable blade responsive to forces encountered during shaving. The razor unit also includes laterally-disposed vertical return springs extending from and continuous with both ends of the razor unit for supporting the blade. The return springs allow vertical displacement of the blade in response to forces encountered during shaving and return the blade to a resting position in the absence of such forces.Type: GrantFiled: May 2, 1994Date of Patent: December 6, 1994Assignee: Warner-Lambert CompanyInventor: Frank A. Ferraro
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Patent number: 5347716Abstract: A safety razor in which at least part of the skin engaging surface thereof has an adherent coating comprising substantially spherical elastomeric particles in a polymer matrix, the size and concentration of such particles being such that the coated surface has a surface roughness with spaced major and subsidiary peaks.Type: GrantFiled: May 27, 1993Date of Patent: September 20, 1994Assignee: The Gillette CompanyInventor: Alan Crook
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Patent number: 5313705Abstract: A segmented guard bar and skin flow control members disposed in the spaces between the guard bar segments. Though not limited to any specific type of razor, the present invention is particularly suited for use with a flexible safety razor having a cap member at least one and preferably two blades separated by a spacer, and a blade seat having a plurality of blade support portions separated by corrugations and a segmented guard bar with each segment independently connected to the blade support portions. Skin flow control members having at least one groove join the adjacent guard bar segments.Type: GrantFiled: February 1, 1993Date of Patent: May 24, 1994Assignee: Warner-Lambert CompanyInventors: David F. Rivers, Frank A. Ferraro
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Patent number: 5305526Abstract: To reduce the frictional resistance of a wet razor head, especially a razor blade unit thereof, as well as to provide a sharper blade without the risk of injury, there is provided a combination of a protective wire that covers a blade made of a steel strip having a width of less than 5 mm, a thickness between 0.05 and 0.25 mm, and a chromium/molybdenum steel composition having a hardness of greater than 620 HV and a retained austenite content of less than 32%, with the blade being a single piece that has no perforations or holes and that is mounted in a vibration-free manner in a plastic body. The protective wire comprises loops that are spaced greater than 2 mm but less than 5 mm apart and that have a minimum thickness of greater than 0.1 mm to form a protective guard over the razor blade with the effect of a protective foil.Type: GrantFiled: April 30, 1992Date of Patent: April 26, 1994Assignee: Wilkinson Sword Gesellschaft mit beschrankter HaftungInventor: Wolfgang Althaus
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Patent number: 5249361Abstract: A razor blade body in the form of a cartridge structure includes a guard member assembled thereon forward of, and extending parallel to, the blade or blades. The guard is of a two part molded structure having an upper portion of elastomeric material with a plurality of upwardly projecting protrusions formed thereon and a lower base portion of rigid plastic material having a downwardly projecting V-shaped cross-sectional portion. A pair of upwardly projecting elements are disposed in spaced relation forming a recess on the blade cartridge structure for receiving the V-shaped base portion therebetween and a latch means disposed in the recess retains the guard member in the assembled position.Type: GrantFiled: May 13, 1992Date of Patent: October 5, 1993Assignee: The Gillette CompanyInventors: Domenic V. Apprille, Jr., Gary R. Miller, Frank E. Brown, John B. Taylor
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Patent number: 5224267Abstract: Safety razors comprise frames in which blade members are mounted in such a manner as to permit their angular displacement to change their shaving angle in use. The blade members are pivotally or hingedly mounted and are spring biassed to a normal position in which their shaving angles are at a maximum value. When, in use, the razor experiences high drag forces, the blade members are caused to move so as to reduce their shaving angles. The blade members may respond directly to drag forces applied to them or indirectly in response to deflection of guard members under high drag forces.Type: GrantFiled: February 5, 1992Date of Patent: July 6, 1993Assignee: The Gillette CompanyInventors: Graham J. Simms, Brian Oldroyd
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Patent number: 5191712Abstract: A razor head or cartridge is provided on its skin engaging surfaces, e.g. caps and/or guard surfaces with an array of closely spaced projections which, in use, produce a pleasant tactile sensation tending to reduce shaving discomfort.The projections may be formed by closely packed flexible filaments, or by moulded fins or pillars.Type: GrantFiled: September 11, 1992Date of Patent: March 9, 1993Assignee: The Gillette CompanyInventors: Alan Crook, Oliver D. Oglesby, Brian Oldroyd
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Patent number: 5185927Abstract: A segmented guard bar and skin flow control members disposed in the spaces between the guard bar segments. Though not limited to any specific type of razor, the present invention is particularly suited for use with a flexible safety razor having a cap member at least one and preferably two blades separated by a spacer, and a blade seat having a plurality of blade support portions separated by corrugations and a segmented guard bar with each segment independently connected to the blade support portions.Type: GrantFiled: May 13, 1991Date of Patent: February 16, 1993Assignee: Warner-Lambert CompanyInventor: David F. Rivers
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Patent number: 5161307Abstract: A razor head, and especially a razor blade unit, is disposed at the front end of a handle of a wet razor and includes a plastic body that comprises a front guide strip and a rear cover. A single or double razor blade is disposed in the plastic body. The cover is provided with a glide strip that is convexly curved.Type: GrantFiled: April 19, 1991Date of Patent: November 10, 1992Assignee: Wilkinson Sword Gesellschaft mit beschrankter HaftungInventor: Wolfgang Althaus
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Patent number: 5092042Abstract: A shaving system includes body structure with guide structure and blade structure carried by the body structure. The blade structure has a cutting edge extending along the length of the body structure. A movable guard member of sheet material is carried by the body structure forwardly of the cutting edge of the blade structure and has a vertically extending rear wall portion, a sloped surface portion that extends forwardly in cantilever relation from the rear wall portion and that includes skin-tensioning surface structure, and integral guide portions disposed in the guide structure. The movable guard member is biased for dynamic movement as guided by the guide structure in the course of a shaving stroke.Type: GrantFiled: September 28, 1990Date of Patent: March 3, 1992Assignee: The Gillette CompanyInventors: Gary R. Miller, Chester F. Jacobson
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Patent number: 5084969Abstract: A razor head is provided that is disposed at the front end of a handle of a wet razor. The razor head includes a body in which is disposed a single or double razor blade. A guide strip that extends parallel to the razor blade is disposed in front of the same and is furthermore disposed on a displacement mechanism or a pivot mechanism in such a way that in a direction perpendicular to a lengthwise dimension of the guide strip, the latter is freely movable counter to a spring force. This allows the shaving angle and hence the cutting geometry to be altered in a straighforward manner.Type: GrantFiled: August 31, 1990Date of Patent: February 4, 1992Assignee: Wilkinson Sword Gesellschaft mit beschrankter HaftungInventor: Wolfgang Althaus
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Patent number: 5063668Abstract: A razor head, and especially a razor blade unit, is disposed at the front end of a handle of a wet razor. The razor head comprises a plastic body having an upper side that defines a surface for engaging the skin of a user. The plastic body also has a front side and a back side. A single or double razor blade is disposed in the plastic body. A wire, portions of which, in the vicinity of the upper side of the plastic body, extend over cutting edges of the razor blades at a distance from one another and parallel to a direction of shaving. Guide elements are distributed over the length of the plastic body in the vicinity of both the front and back sides thereof, with the guide elements being provided for guiding the wire in a zigzagged manner back and forth over the upper side of the plastic body.Type: GrantFiled: April 4, 1991Date of Patent: November 12, 1991Assignee: Wilkinson Sword Gesellschaft mit beschrankter HaftungInventor: Wolfgang Althaus
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Patent number: 5063669Abstract: A razor head and especially a razor blade unit, is disposed at the front end of a handle of a wet razor and includes a plastic body that comprises a front guide strip and a rear cover. A single or double razor blade is disposed in the plastic body and rests upon a platform of a base member of the plastic body in such a way that it is fixed in position between this platform and an upper part of the plastic body that is secured to the base member. The front guide strip and the rear cover are interconnected via side parts while leaving a central opening in the vicinity of the cutting edge or edges of the razor blade or blades. The thus-formed, frame-like upper part is placed upon and connected to the base member.Type: GrantFiled: April 4, 1991Date of Patent: November 12, 1991Assignee: Wilkinson Sword Gesellschaft mit beschrankter HaftungInventor: Wolfgang Althaus
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Patent number: 5056222Abstract: A shaving system of the wet shave type includes body structure with blade structure that has a cutting edge. A housing assembly carried by the body structure adjacent the blade structure includes surface structure disposed for skin-engagement adjacent of the cutting edge, structure that defines an elongated apertured chamber extending generally parallel to the cutting edge of the blade structure, and a member of shaving aid material disposed in the housing chamber. The housing assembly also includes guide portions disposed in cooperating relation with guide structure of the body structure for dynamic guided movement of the housing assembly against the biasing structure during shaving. The housing structure apertures communicate with the shaving aid material in the chamber structure and enable shaving aid material to be released and applied through the apertures to the shaver's skin surface during the course of shaving.Type: GrantFiled: September 28, 1990Date of Patent: October 15, 1991Assignee: The Gillette CompanyInventors: Gary R. Miller, Chester F. Jacobson, Robert A. Trotta
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Patent number: 5007169Abstract: A vibrating razor having a shaver head adapted to receive a cartridge. The shaver head is pivotally attached to a housing containing a power source and an electric motor having a rotatable shaft. The shaver head is directly and eccentrically coupled to the rotatable shaft with an eccentric coupler for imparting oscillatory movement to the cartridge.Type: GrantFiled: December 11, 1989Date of Patent: April 16, 1991Assignee: Warner-Lambert CompanyInventor: Vincent C. Motta
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Patent number: 5001832Abstract: A razor blade unit includes a plastic support member having a guide surface and a top cap. At least one razor blade having a cutting edge is embedded in the support member. At least one freely rotatable cylindrical roller is attached axially to the support member and extends parallel to the cutting edge of the razor blade to engage a skin area. A cylindrical roller has a lower coefficient of friction than the plastic support member. The cylindrical roller was preferably made of metal and is located in the guide surface and/or in the top cap of the razor blade unit.Type: GrantFiled: August 24, 1988Date of Patent: March 26, 1991Assignee: Wilkinson Sword GmbHInventor: Wolfgang Althaus
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Patent number: 4932123Abstract: A razor formed as a unitary moulding comprises a main body 1 including a cap member 3 and two side walls 4 and a guard member 6 connected to the body 1 by spring fingers 7 and living hinges which permit the guard member to be located in guide means 9 which guide the guard member for limited displacement during shaving.Type: GrantFiled: December 28, 1988Date of Patent: June 12, 1990Assignee: The Gillette CompanyInventor: John F. Francis
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Patent number: 4914817Abstract: A safety razor head comprising a guard surface and a cap surface is provided with a plurality of parallel riblets disposed on the head for contact with the surface being shaved, during use of the razor. The riblets may be disposed on the cap surface or on a substantially thin film material extending from the guard surface to the cap surface and are effective to improve shaving comfort.Type: GrantFiled: July 1, 1988Date of Patent: April 10, 1990Assignee: The Gillette CompanyInventors: John Galligan, John Thompson
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Patent number: 4912846Abstract: A safety razor blade has a blade body with a substantially planar upper surface. A row of blunt convex protrusions are spaced along the forward edge portion of the blade body in a comb-like configuration. The protrusions have upper surfaces substantially coplanar with the upper surface of the blade body. Cutting elements are provided between the protrusions, each cutting element having an upper surface which tapers downwardly from the upper surface of the blade body to a cutting edge. The protrusions extend beyond the respective cutting edges.Type: GrantFiled: March 18, 1988Date of Patent: April 3, 1990Inventor: Ying Ming Yu
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Patent number: 4777722Abstract: A safety razor assembly is provided having a removable cap slideably received in interfitting engagement with the razor head. The cap is provided with a shaving aid member having a skin contacting surface disposed adjacent, and extending along the forward edge thereof, and a cover wall. In the shaving mode, the cap is positioned on the shaving head with the cover wall below the head and the skin contacting surface disposed adjacent the blade edges in a preferred shaving geometry. The cap may be removed and positioned on the shaving head in the inverted position, with the cover wall disposed over the blade edges for protection of the blades, or adjacent items, during non-use of the safety razor.Type: GrantFiled: December 14, 1987Date of Patent: October 18, 1988Assignee: The Gillette CompanyInventor: Robert A. Trotta
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Patent number: 4700477Abstract: A throw away razor type eyebrow trimmer having a narrow straight cutting surface has front and rear guards to reduce the danger of cutting the skin with the sharp edge of a razor blade. The guards pull the skin tight between the guards to render the trimming more manageable and precise. The eyebrow trimmer consists of three basic elements, (1) the razor blade, (2) the front safety head guard for the razor, and (3) the rear safety head guard. In use, the front safety head guard depresses and stretches the skin between it and the rear safety head guard which rides above the razor blade thus facilitates easier and better removal of hair. The eyebrow trimmer is mounted at a comfortable operating angle on a handle having a textured grip for easy holding and manipulation of the eyebrow trimmer, and by using a mirror the party using the trimmer can have a clear view of the eyebrow curving and trimming operation as it progresses.Type: GrantFiled: August 26, 1985Date of Patent: October 20, 1987Inventor: Ava Heller
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Patent number: 4679324Abstract: In a razor blade unit having a blade (or blades) secured to a carrier, the carrier includes a protecting bar for protecting the blade edge and which bar is removable by breaking frangible connecting fingers linking the bar with a portion of the carrier mounting the blade.Type: GrantFiled: November 7, 1985Date of Patent: July 14, 1987Assignee: The Gillette CompanyInventor: Bryan R. Kirk
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Patent number: 4562644Abstract: The lubricant-applying safety razor includes single or multiple cutting blades supported in a blade-supporting head and a lubricant roll is supported by the blade-supporting head in a position in advance of the cutting edges of the blades when the safety razor is moved along the skin of the user in a shaving motion. The lubricant roll has a peripheral surface for engaging the skin of the user in advance of the cutting edges of the blades and is provided to apply a thin lubricous film to the skin in advance of the cutting edges for the purpose of reducing the coefficient of friction between the wet skin surface and the lubricous film. The peripheral surface of the lubricant roll initially positions the skin surface in a limited angular relationship with the blades. With continued use of the razor, the lubricant roll begins to wear away and thereby lowers so that the angular relationship between the cutting blades and the skin surface gradually increases.Type: GrantFiled: August 10, 1984Date of Patent: January 7, 1986Inventor: Peter B. Hitchens
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Patent number: 4546544Abstract: A one-piece disposable razor having a blade edge protector molded integrally with the razor operable to latch releasably to the razor.Type: GrantFiled: June 28, 1984Date of Patent: October 15, 1985Assignee: Warner-Lambert CompanyInventors: Ernest F. Kiraly, Frank A. Ferraro
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Patent number: 4512077Abstract: An electric shaver comprising a housing, a shaving head projecting from an upper end of the housing, a shaving blade having a front shaving edge extending laterally along a front end of the head, a comb having a number of combing teeth arranged laterally side by side and positioned below the front shaving edge of the shaving blade, and an edge cover provided above the shaving blade for abutting against skin when the shaver is in use to regulate, together with the comb, an angle which the edge of the shaving blade makes with respect to the skin. A front edge of the edge cover, the front shaving edge of the shaving blade, and a front end of the comb are aligned substantially on a straight line in a plane perpendicularly cutting the front end of the edge cover, the front shaving edge of the shaving blade and the front end of the comb.Type: GrantFiled: January 21, 1983Date of Patent: April 23, 1985Assignee: Matsushita Electric Works, Ltd.Inventors: Toshio Tanabe, Masakazu Kita
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Patent number: 4501067Abstract: A razor blade assembly, in the form of a razor or shaving unit, comprises a top cap 114, a razor blade 113 fixed relative to the top cap, and a guardbar 115 which is pivotally movable relative to the blade from a shaving position, in which the blade is exposed for shaving, to a protecting position in which the guardbar prevents contact between the cutting edge of blade 113 and a user of the razor. The guardbar can be formed integrally with a platform 112 on which a second blade 123 is secured, or the second blade 123 could be secured to the top cap. In either case the guardbar and platform will pivot between the shaving position and the protecting position, and in latter position both blades will be protected.Type: GrantFiled: March 23, 1983Date of Patent: February 26, 1985Assignee: Wilkinson Sword LimitedInventor: David S. Duncan
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Patent number: 4476630Abstract: A low cost razor for wet shaving having a permanently attached sliding blade cover and a cooperating cover actuating button connected to the cover by a flexible element.Type: GrantFiled: December 21, 1981Date of Patent: October 16, 1984Assignee: Warner-Lambert CompanyInventor: David S. Byrne
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Patent number: 4442598Abstract: A razor blade assembly including a body member, a guard member fixed to the body member, a blade member mounted on the body member for movement thereon, the blade member being independently movable in response to forces encountered during a shaving operation, spring finger biasing members integral with the body member and exercising a bias against the blade member, and a cap portion fixed to the body member.Type: GrantFiled: March 1, 1982Date of Patent: April 17, 1984Assignee: The Gillette CompanyInventor: Chester F. Jacobson
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Patent number: 4409735Abstract: A razor blade assembly which is flexible in at least one bending mode. A seat member of substantially planar shape has an integrally formed guard located transversely along its forward margin. The guard and seat members are formed of a flexible material. A flexible blade having a sharpened edge along a transverse margin is disposed on a surface of the seat member having its edge parallel to and rearwardly located of the guard bar. A cap member of flexible material has a planar surface in contact with the blade and a front margin located rearwardly of the cutting edge. The seat, blade and cap are yieldingly bonded together and freely flexible about an axis parallel to the plane of the blade and perpendicular to the cutting edge.Type: GrantFiled: December 6, 1978Date of Patent: October 18, 1983Assignee: Warner-Lambert CompanyInventors: Cyril A. Cartwright, James S. Emmett, Arthur E. Michael, Anthony J. Peleckis, Ernest M. Symes
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Patent number: 4407067Abstract: A shaving implement including a platform member, a cap member, and blade means disposed therebetween, the cap member including a series of forwardly extending fingers separated by recesses, the fingers having a first skin-engaging point thereon, and the recesses being defined in part by a cap member wall comprising a second skin-engaging point, the blade means comprising first and second blades each having a blade tangent angle in the range of 20.degree. to 32.degree. and a span in the range of 0.030 tp 0.080 inch, the first blade having an exposure of 0.0015.+-.0.0015 inch, and the second blade having alternating first and second exposures along its length, the first exposure being determined by a first tangent line extending from the first cutting edge to the first skin-engaging point, and the second exposure being determined by a second tangent line extending from the first cutting edge to the second skin-engaging point.Type: GrantFiled: September 3, 1981Date of Patent: October 4, 1983Assignee: The Gillette CompanyInventor: Robert A. Trotta
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Patent number: 4378633Abstract: A razor blade assembly including a body member, a guard member mounted on the body member for movement thereon, a blade member mounted on the body member for movement thereon, the guard member and the blade member being independently movable in response to forces encountered during a shaving operation, spring finger biasing members integral with the body member and exercising a bias against the guard member and the blade member, a cap portion fixed to the body member, and connector structure integral with the body member for connection of the blade assembly to a razor handle.Type: GrantFiled: January 29, 1981Date of Patent: April 5, 1983Assignee: The Gillette CompanyInventor: Chester F. Jacobson
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Patent number: 4378634Abstract: A razor blade assembly including a body member, a guard member mounted on the body member for movement thereon, a blade member mounted on the body member for movement thereon, the guard member and the blade member being independently movable in response to forces encountered during a shaving operation, spring finger biasing members integral with the body member and exercising a bias against the guard member and the blade member, a cap portion fixed to the body member, and connector structure integral with the body member for connection of the blade assembly to a razor handle.Type: GrantFiled: January 30, 1981Date of Patent: April 5, 1983Assignee: The Gillette CompanyInventor: Chester F. Jacobson
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Patent number: 4344226Abstract: A disposable razor has a body of synthetic plastic material. The front portion of the body has a slot in which a single-edge blade is mounted. A bladeguard is either a separate element and detachably connected to the body, or is of one piece with the body and can be broken off and removed.Type: GrantFiled: April 17, 1980Date of Patent: August 17, 1982Inventor: Joseph W. Blake, III
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Patent number: 4270268Abstract: A razor blade assembly including a body member, a guard member mounted on the body member for movement thereon, a blade member mounted on the body member for movement thereon, the guard member and the blade member being independently moveable in response to forces encountered during a shaving operation, spring finger biasing members integral with the body member and exercising a bias against the guard member and the blade member, a cap portion fixed to the body member, and connector structure integral with the body member for connection of the blade assembly to a razor handle.Type: GrantFiled: December 7, 1979Date of Patent: June 2, 1981Assignee: The Gillette CompanyInventor: Chester F. Jacobson
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Patent number: 4265015Abstract: A razor in which a razor blade and a blade support, on which the razor blade is mounted, move together back and forth with respect to the base of the razor so as to adjust the contacting angle with respect to the operator's skin. The base is provided on the top of the handle of the razor, and the razor blade and the blade support are covered by a top plate mounted on the base. Provided in front of the blade support is a guard member which projects forwardly beyond the cutting edge of the razor blade and extends parallel with the cutting edge. The blade support and the razor blade are moved back and forth by a rotatable operating member. When the blade support is retracted backwards, the whisker particles clinging to the blade are scraped off and dropped from between the base and the guard member.Type: GrantFiled: June 27, 1979Date of Patent: May 5, 1981Assignee: Kai Cutlery Center Company LimitedInventor: Tamoru Asano
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Patent number: 4094066Abstract: A surgical razor blade intended for one time use in shaving hair has an integral guard in the form of spiral windings of a fine flexible thread with the windings extending in uniformly spaced fashion around the blade cutting edge. The thread has a diameter within the range of 0.2 mm (0.0078 inches) to 1.0 mm (0.039 inches) and the spacing between adjacent windings of the thread is within the range of 1.0 mm (0.039 inches) to 4.0 mm (0.157 inches).Type: GrantFiled: March 8, 1977Date of Patent: June 13, 1978Inventor: Donald S. Daniel, Jr.
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Patent number: 4083102Abstract: A battery operated razor comprises:(a) a handle in the form of a stem, a battery in the stem, a battery operated motor in the stem, and means displaceable by the motor in the stem in response to battery energization of the motor to produce vibration, and(b) a blade receiving head assembly removably attached to the stem, the assembly including a blade guard yieldably supported for limited displacement relative to the blade and stem, whereby the blade is vibrated relative to the guard when the guard is urged against a user's skin and the motor is energized.Type: GrantFiled: December 10, 1976Date of Patent: April 11, 1978Inventor: Russell P. Harshberger
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Patent number: 4030193Abstract: A haircutting machine by which a haircut may be performed without need of help from another person or a hairdresser in executing the work. The haircut is attained with the use of the machine, which consists of an oblong metallic plate ending in a handle, that has on each side a series of comb teeth specially formed in various shapes and lengths of teeth. The machine can be adjusted for haircutting in various depths, or to the respective shape of the scalp or any other hairy part of the human body. The possibility of adjusting the machine, as the case may be, can be further regulated by increasing or decreasing the distance between the cutting edge of the blade and the tip of the teeth by a proportionate transposition of the cutting blade along the comb's teeth by attaching the cutting blade on a moving bearer that can be slid along the comb's teeth and also can be fixed at the desired position.Type: GrantFiled: July 18, 1975Date of Patent: June 21, 1977Inventor: Stephen Emmanuel Mandilaras