Tensioned Blade Edge Patents (Class 30/52)
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Patent number: 8689448Abstract: An outer frame of a razor head includes two side parts, a front part and a rear part connecting the side parts. An inner side wall of each side part provides a positioning block which has a first plane for mounting and supporting razor blade assemblies. Resilient arms are connected with side walls of the positioning blocks. Each resilient arm includes a leg part connecting the positioning block and a head part connecting an end of the leg part. An inclination angle between the leg part and the first plane is in the range of 25°˜30°. The head part is extended out of the first plane. The resilient arm can provide a suitable supporting force to a razor blade holder within its allowable range to be prevented from being fractured easily, and in turn improve the using performance of the outer frame and extend its lifetime.Type: GrantFiled: July 30, 2010Date of Patent: April 8, 2014Inventor: Xiangrong Ren
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Patent number: 8544177Abstract: A shaving blade unit comprising a shaving cartridge having a rearwardly secured shaving blade member wherein the cartridge comprises a) a housing having a front wall, a rear wall, and opposing side walls extending between the front and rear walls; b) a shaving blade member disposed within said walls of the housing and wherein the blade member has a cutting edge that faces a front surface of said housing; c) a resilient member disposed rearward of the shaving blade member and that is secured by a shaving blade member retainer; and wherein the resilient member provides a forward biasing force to the shaving blade member and wherein the shaving blade member exhibits a springing motion during a shaving stroke.Type: GrantFiled: October 29, 2008Date of Patent: October 1, 2013Assignee: The Gillette CompanyInventors: Stephen Leonard Rawle, Russell Stuart Avens
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Patent number: 8234789Abstract: A shaving blade unit comprising a shaving cartridge having a floatably secured shaving blade member wherein said cartridge comprises: a) a housing with a front wall, a rear wall, and opposing side walls extending between said front and rear walls; b) said shaving blade member having opposing ends with a shoulder at each end and wherein said shoulder rests along said side wall and wherein a cutting edge of said shaving blade member is facing a front surface of said housing; c) a resilient member disposed rearward of said shaving blade member and that is secured by a shaving blade member retainer; and wherein said resilient member provides a forward biasing force to said shaving blade member such that said contact between said shoulder and said side wall is at least maintained when said unit is removed from a skin surface during shaving.Type: GrantFiled: October 29, 2008Date of Patent: August 7, 2012Assignee: The Gillette CompanyInventors: Russell Stuart Avens, Stephen Leonard Rawle
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Patent number: 7255705Abstract: A device for dissecting an object, such as a cell colony includes a handle and an incision knife module that can dissociate the colony into several colony pieces. In accordance with features of the invention, users can use this dissecting device to cut an object into several pieces quickly and smoothly at a time.Type: GrantFiled: December 24, 2003Date of Patent: August 14, 2007Assignee: Industrial Technology Research InstituteInventors: Lih Tao Hsu, Wannhsin Chen, Kuang Ning Chang, Mei Ju Yang, Jinn Fa Wu, Yeou Bin Guu
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Patent number: 6901833Abstract: An automated tube trimming system accurately trims tubes to the correct height and angle. The tube trimming system is a combination of an automated trimming saw and a unique spherical tube clamping system. A spherical clamp having a fixed clamp section and an internal swivel portion is used to clamp a tube at an appropriate angle for cutting in an automated tube trimming saw. The spherical clamp may be tightened onto the tube at an angle appropriate to provide the correct mating cut to easily weld to a second mating tube section or fitting. Conventional methods cut perpendicular to the direction of the tube, thereby requiring time consuming and labor intensive grinding and deburring. The ability to provide accurate and simple formation of trimmed tubes may be useful in a wide variety of industries where the movement of air and fluid through tubes is performed.Type: GrantFiled: November 22, 2002Date of Patent: June 7, 2005Assignee: The Boeing CompanyInventors: Edward O. Jorgenson, Albert L. Hametner
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Patent number: 5205040Abstract: The present invention pertains to an apparatus for shaving. The apparatus for shaving comprises at least one blade having an essentially straight and essentially continuous cutting edge. The blade is comprised of a plurality of pliable blade segments aligned adjacent to each other to form the essentially straight and essentially continuous cutting edge such that each blade segment is capable of being deflected in a direction perpendicular to the cutting edge independently with respect to the other blade segments by a surface while in contact with the surface during shaving of the surface. The apparatus is also comprised of a rectangular shaped head which holds the blade in a desired orientation. Additionally, the apparatus is comprised of a handle connected to the head. In a preferred embodiment, there can be two blades held in the head in a tandem relationship. Preferably, the head holds the blade such that the blade segments are freestanding and not prestressed.Type: GrantFiled: September 29, 1992Date of Patent: April 27, 1993Inventor: Eric J. Werner
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Patent number: 5038472Abstract: A pivoting safety razor assembly for holding a blade device has a handle and a flexible member which interconnects the handle with the blade device. The blade device defines a cutting edge and the flexible member bends in response to shaving forces to move the handle in a rotational motion about the cutting edge.Type: GrantFiled: November 17, 1989Date of Patent: August 13, 1991Assignee: Warner-Lambert CompanyInventor: Richard A. Iderosa
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Patent number: 4942662Abstract: The safety razor has an axial control rod that may have three detenting positions in the handle to define the movement up or down of the rod which arcuately bends at least one razor blade and a razor blade support plate in which the razor blade or blades are placed longitudinally into a convex curve, a straight blade or a concave curve providing a choice of arcuate cutting edges for a smooth shave over irregular surfaces of the portions of the body being shaved.Type: GrantFiled: January 17, 1989Date of Patent: July 24, 1990Inventor: Allan F. Radcliffe
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Patent number: 4459744Abstract: A razor blade arrangement is provided, wherein the razor blade is supported for movement between concave and convex configurations. The razor blade is mounted in a cartridge which holds the blade flexed in convex configuration. The blade is so mounted in the cartridge and the cartridge is so mounted on a handle, that the cartridge-blade assembly may be flexed upon an application of a force on the face thereof. The cartridge-blade assembly is detachably mounted on the handle. The blade is mounted in the cartridge so as to permit relative longitudinal displacement between the blade and cartridge. This movement is afforded by means of providing elongated holes in the blade, which are engaged by pins or pegs forming part of the cartridge. The method of the invention comprises flexing a razor blade between convex and concave shapes in correspondence with the surface to be shaved. The blade is actually flexible in the order of magnitude of about one-eighth of an inch.Type: GrantFiled: February 4, 1982Date of Patent: July 17, 1984Assignee: Alan K. RobertsInventor: Miguel H. Esnard
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Patent number: 3940853Abstract: A razor blade unit in the form of an elongated blade member, at least one long edge of which is constituted by a cutting edge, and means engaged with the blade member and in compression to strain the ends of the blade member apart.Type: GrantFiled: October 11, 1974Date of Patent: March 2, 1976Assignee: The Gillette CompanyInventor: John F. Francis