Patents by Inventor Takeshi Shiba
Takeshi Shiba has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20100180447Abstract: An electric shaver in which a blade frame part 4 is attached to an upper portion of a body part 3, the blade frame part 4 including an outer blade 5, an outer blade frame 13 to fix the outer blade 5 thereto, a holding frame 14 to hold the outer blade frame 13 vertically movable, and an outer peripheral frame 12 connected to the holding frame 14, the upper portion including an inner blade 1. The holding frame 14 is detachably attached to the outer peripheral frame 12 from an under side thereof, and the outer peripheral frame 12 entirely covers an outer periphery of the holding frame 14.Type: ApplicationFiled: June 13, 2008Publication date: July 22, 2010Applicant: PANASONIC ELECTRIC WORKS CO., LTD.Inventors: Masaaki Sato, Takeshi Shiba, Jyuzaemon Iwasaki
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Publication number: 20100175259Abstract: An electric shaver including: a gripper portion to be held by the user's hand; and a head portion configured to hold a shaving-blade unit and supported to be swingable in predetermined directions with respect to the gripper portion, wherein the head portion is provided with an edge-trimmer-blade unit.Type: ApplicationFiled: December 30, 2009Publication date: July 15, 2010Applicant: PANASONIC ELECTRIC WORKS CO., LTD.Inventors: Hiroshi Shigeta, Masanobu Yamasaki, Shin Hosokawa, Takeshi Shiba, Jyuzaemon Iwasaki
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Publication number: 20100175260Abstract: An electric shaver including: a gripper portion to be held by the user's hand; and a head portion configured to hold a shaving-blade unit and supported to be swingable in predetermined directions with respect to the gripper portion, wherein the head portion is provided with: an edge-trimmer-blade unit configured to be switched between a ready-for-use state and a stored state by an operation element; and a engaging portion for fixing the head portion, the engaging portion configured to be engaged with the operation element when the edge-trimmer-blade unit is switched to the readyType: ApplicationFiled: December 30, 2009Publication date: July 15, 2010Applicant: PANASONIC ELECTRIC WORKS CO., LTD.Inventors: Hiroshi SHIGETA, Masanobu YAMASAKI, Shin HOSOKAWA, Takeshi SHIBA, Jyuzaemon IWASAKI
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Patent number: 7739798Abstract: A dry shaver has an elongated shaving head with a lengthwise axis. The shaving head carries semi-cylindrical first and second outer cutters disposed on its opposite width ends, as well as a semi-cylindrical finishing cutter and a slit cutter interposed between the first and second outer cutters. The finishing cutter has a finishing foil which is deeply curved than a foil of the first and second outer cutters into an arcuate contour having a width less than that of the first and second outer cutters. The finishing foil disposed behind the first outer cutter comes into contact with a user's skin to make closer shaving than the first and second cutters.Type: GrantFiled: December 7, 2007Date of Patent: June 22, 2010Assignee: Panasonic Electric Works Co., Ltd.Inventors: Jyuzaemon Iwasaki, Hiroaki Shimizu, Takeshi Shiba, Masaaki Sato, Shunsuke Komori, Shinji Fujimoto
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Patent number: 7730621Abstract: A shaving foil for a dry shaver has a plurality of perforation arranged in an array. The shaving foil is formed in its skin contact surface with a plurality of recesses which define a thin section of reduced thickness at the recesses, while leaving thick sections at the remainder of the foil. Each perforation is configured to have its circumference defined partly by the thin section and partly by the thick section. Both of the thin and thick sections can come into contact with a user's skin for smoothly guiding hairs into the perforations to make close shaving without irritating the skin, while the shaving foil is moved across the skin. Especially, the thin sections act to cut the hairs shorter than the thick section, as wall as to raise flattened hairs into the perforations for successfully cutting the flattened hairs.Type: GrantFiled: December 7, 2007Date of Patent: June 8, 2010Assignee: Panasonic Electric Works Co., Ltd.Inventors: Shunsuke Komori, Jyuzaemon Iwasaki, Hiroaki Shimizu, Takeshi Shiba, Masaaki Sato
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Publication number: 20100126022Abstract: An electric shaver including a hand grip 10 configured to be gripped by a user' s hand, and a blade head 20 provided on an upper end of the hand grip. The blade head carries at least one shaving unit 50 comprising an outer blade foil 70 and an inner blade 80 driven in a shearing engagement manner with the outer blade foil. The outer blade foil has a plurality of holes in which hairs are introduced. The outer blade foil is elongated and has a length, and is curved along a width direction to form a generally C-shaped cross section, and is curved convexly and uniformly along its length to have a longitudinal curved outline. A radius of to curvature of the longitudinal curved outline is 150 mm to 350 mm.Type: ApplicationFiled: August 31, 2009Publication date: May 27, 2010Applicant: Matsushita Electric Works, Ltd.Inventors: Takeshi Shiba, Nariyoshi Nakamura, Masaaki Sato, Tomoyuki Inoue, Shunsuke Komori, Makoto Fukutani
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Publication number: 20090307909Abstract: In an inner blade (5) for electric shaver comprising plural blade elements (30) which are supported on a base (20), and reciprocally driven parallel to an outer foil blade (10) having beard/moustache/whisker introduction apertures (11) so as to cut beards, moustaches or whiskers by the inner blade and the outer foil blade, wherein the plural blade elements (30) are arranged in parallel each other; a pair of cutting edges (32) is provided symmetrically on both sides of a top portion of each blade element (30); each cutting edge (32) is established with a top face (31) of the blade element (30) and a cutting face (33) slanted for the top face (31); a cusp of the cutting edge (32) is rounded to have a radius of curvature R (?m); and as an angle of the cutting face for the top face is designated by a symbol ? (degree), the radius of curvature R of the cusp of the cutting edge is selected to satisfy a relation that R??0.02ยท?+1.1 (?m).Type: ApplicationFiled: July 9, 2007Publication date: December 17, 2009Applicant: PANASONIC ELECTRIC WORKS CO., LTD.Inventors: Masaaki Sato, Shunsuke Komori, Jyuzaemon Iwasaki, Takeshi Shiba
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Publication number: 20090241343Abstract: A support arm 27 that is rockably supported on one end of a grip portion 2 and projects from the one end is provided. Both ends of a blade head 3 are supported by the support arm 27 such that the blade head 3 can rock around an axis extending along a reciprocating direction of an inner blade 14, and an axial direction of the rocking motion of the support arm 27 with respect to the grip portion 2 is set in a direction intersecting with the reciprocating direction of the inner blade 14. This configuration achieves an electric shaver capable of increasing the movable range of the blade head while preventing a main body from increasing in size.Type: ApplicationFiled: September 27, 2006Publication date: October 1, 2009Applicant: PANASONIC ELECTRIC WORKS CO., LTD.Inventors: Masanobu Yamasaki, Takeshi Shiba, Juzaemon Iwasaki, Shinji Fujimoto, Masaaki Sato, Shunsuke Komori
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Patent number: 7464471Abstract: In a reciprocation type electric shaver having an outside blade unit detachable from a main body, the outside blade unit comprises a main blade, a slit blade and an outside blade holder for holding the main blade and the slit blade capable of floating up and down. A coupling structure for coupling the slit blade on the outside blade holder has a retaining structure for engaging the slit blade and the outside blade holder in a lateral direction of the outside blade unit so as to prevent disengagement of the slit blade from the outside blade holder when the slit blade is floated up and down with inclination. The retaining structure is a pair of fitting recesses formed on the slit blade and a pair of fitting protrusions formed on the outside blade holder.Type: GrantFiled: December 28, 2005Date of Patent: December 16, 2008Assignee: Panasonic Electric Works, Ltd.Inventors: Makoto Fukutani, Takeshi Shiba, Shunsuke Komori
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Patent number: 7461456Abstract: A dry shaver includes a swingable shaving head which is provided with a pair of support points through which the shaving head is supported to a grip through a linkage mechanism. The linkage mechanism includes a pair of cranks each connected at its one end to each one of the support points and connected at the other end to each one of the anchor points on the side of the grip. A frame projects on top of the grip in an overlapping relation with the shaving head to give the anchor points which are positioned upwardly of the support points with respect to a height axis of the grip for suspending the shaving head an top of the grip by the frame.Type: GrantFiled: December 17, 2004Date of Patent: December 9, 2008Assignee: Matsushita Electric Works, Ltd.Inventors: Toshiyuki Tsushio, Jyuzaemon Iwasaki, Takeshi Shiba, Masanobu Yamasaki
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Publication number: 20080134514Abstract: A dry shaver has an elongated shaving head with a lengthwise axis. The shaving head carries semi-cylindrical first and second outer cutters disposed on its opposite width ends, as well as a semi-cylindrical finishing cutter and a slit cutter Interposed between the first and second outer cutters. The finishing cutter has a finishing foil which is deeply curved than a foil of the first and second outer cutters into an arcuate contour having a width less than that of the first and second outer cutters. The finishing foil disposed behind the first outer cutter comes into contact with a user's skin to make closer shaving than the first and second cutters.Type: ApplicationFiled: December 7, 2007Publication date: June 12, 2008Inventors: Jyuzaemon Iwasaki, Hiroaki Shimizu, Takeshi Shiba, Masaaki Sato, Shunsuke Komori, Shinji Fujimoto
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Publication number: 20080134515Abstract: A dry shaver has an elongated shaving head with a lengthwise axis. The shaving head carries semi-cylindrical first and second outer cutters disposed on its opposite width ends, and a semi-cylindrical finishing cutter and a slit cutter interposed between the first and second outer cutters. The finishing cutter has a finishing foil which is deeply curved than a foil of the first and second outer cutters into an arcuate contour having a width less than that of the first and second outer cutters. The finishing foil disposed behind the first outer cutter comes into contact with a user's skin to make closer shaving than the first and second cutters. A skin guard project between the first outer cutter and the finishing cutter to protect the skin from being pressed excessively to a side of the finishing foil when moving the shaving head across a user' skin with the first outer cutter leading in a moving direction, thereby reducing skin irritation.Type: ApplicationFiled: December 7, 2007Publication date: June 12, 2008Inventors: Masaaki Sato, Jyuzaemon Iwasaki, Takeshi Shiba, Hiroaki Shimizu, Shunsuke Komori
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Publication number: 20080134523Abstract: A shaving foil for a dry shaver has a plurality of perforation arranged in an array. The shaving foil is formed in its skin contact surface with a plurality of recesses which define a thin section of reduced thickness at the recesses, while leaving thick sections at the remainder of the foil. Each perforation is configured to have its circumference defined partly by the thin section and partly by the thick section. Both of the thin and thick sections can come into contact with a user's skin for smoothly guiding hairs into the perforations to make close shaving without irritating the skin, while the shaving foil is moved across the skin. Especially, the thin sections act to cut the hairs shorter than the thick section, as wall as to raise flattened hairs into the perforations for successfully cutting the flattened hairs.Type: ApplicationFiled: December 7, 2007Publication date: June 12, 2008Inventors: Shunsuke Komori, Jyuzaemon Iwasaki, Hiroaki Shimizu, Takeshi Shiba, Masaaki Sato
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Patent number: 7334338Abstract: A reciprocatory dry shaver has a shaving head carrying an outer cutter, and an inner cutter. An actuator is mounted in the shaving head for driving the inner cutter. The actuator includes an oscillator which carries a joint for driving connection to the inner cutter. Resilient coupling links are provided to support the oscillator to the shaving head in order to allow the oscillator to reciprocate relative to the shaving head. The resilient coupling link has its upper end coupled to the oscillator and has its lower end which is farther away from the inner cutter than the oscillator and is anchored to the shaving head. Thus, the oscillator is supported as being floated or lifted with respect to the shaving head, thereby being allowed to travel along a path which is somewhat arcuate in coincidence with the arc of the outer cutter.Type: GrantFiled: July 27, 2005Date of Patent: February 26, 2008Assignee: Matsushita Electric Works, Ltd.Inventors: Takeshi Shiba, Ryo Motohashi, Hidekazu Yabuuchi, Hiroaki Shimizu
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Publication number: 20080016694Abstract: An electric shaver includes net-shaped outer blades; and inner blades sliding reciprocally over an inner side of the outer blades as detachably connected with driving units driven by a motor. Each of the inner blades includes a blade plate having an inversed-like-U shape seen from a longitudinal direction in parallel with a reciprocating sliding direction; and a blade holder having attaching portions to be attached to the blade plate in longitudinally defined end regions, wherein connection portions to be detachably connected with the driving units are provided at the blade holder in a longitudinally defined center region, and, when dissembling the blade holder from the driving units, anti-detach portions are provided to thereby prevent separation of the blade holder in the longitudinally defined center region from the blade plate in the longitudinally defined center region due to a tensile load between the connection portions and the driving units.Type: ApplicationFiled: July 13, 2007Publication date: January 24, 2008Applicant: Matsushita Electric Works, Ltd.Inventors: Masaaki Sato, Shunsuke Komori, Takeshi Shiba, Jyuzaemon Iwasaki
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Publication number: 20070261249Abstract: The invention provides a hair removing apparatus having a body hair treatment head (A) removing a body hair by shaving the body hair, depilating the body hair or cutting the body hair, and a main body grip (2) held by a hand, and in which the body hair treatment head (A) being rotatably coupled to the main body grip (2) in such a manner that the body hair treatment head (A) is freely oscillated with respect to the main body grip (2). In this structure, the hair removing apparatus is provided with a weight applying means (100, 110, 120, 130, 140) for applying a force opposing to a force by which the body hair treatment head (A) is oscillated by its own weight of the body hair treatment head (A) around a center (81) of rotation of the body hair treatment head (A).Type: ApplicationFiled: December 16, 2005Publication date: November 15, 2007Applicant: MATSUSHITA ELECTRIC WORKS, LTD.Inventors: Masanobu Yamasaki, Toshiyuki Tsushio, Takeshi Shiba, Juzaemon Iwasaki
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Publication number: 20070245565Abstract: An inner cutter of an electric shaver that cuts hairs by sliding along an inner surface of an outer cutter includes a base portion that is connected to a driving unit, a plurality of cutting pieces that are formed in a U-shape and whose both ends in the longitudinal direction are fixed to the base portion, and a plate member whose one end is fixed to the base portion and the other end is connected to the cutting piece. The plate member is elastically deformed corresponding to elastic deformation of the cutting piece.Type: ApplicationFiled: April 20, 2007Publication date: October 25, 2007Applicant: MATSUSHITA ELECTRIC WORKS, LTD.Inventors: Masaaki SATO, Takeshi SHIBA, Jyuzaemon IWASAKI, Shinji FUJIMOTO, Shunsuke KOMORI
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Publication number: 20070056166Abstract: The electric shaver in accordance with the present invention comprises a hand grip 10 configured to be gripped by a user's hand, and a blade head 20 provided on an upper end of the hand grip. The blade head carries at least one shaving unit 50 comprising an outer blade foil 70 and an inner blade 80 driven in a shearing engagement manner with the outer blade foil. The outer blade foil has a plurality of holes in which hairs are introduced. The outer blade foil is elongated and has a length, and is curved along a width direction to form a generally C-shaped cross section, and is curved convexly and uniformly along its length to have a longitudinal curved outline. The feature of the present invention resides in that a radius of curvature of the longitudinal curved outline is 150 mm to 350 mm.Type: ApplicationFiled: November 10, 2004Publication date: March 15, 2007Applicant: MATSUSHITA ELECTRIC WORKS, LTD.Inventors: Takeshi Shiba, Nariyoshi Nakamura, Masaaki Sato, Tomoyuki Inoue, Shunsuke Komori, Makoto Fukutani
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Patent number: 7127818Abstract: An electric shaver is provided which can enhance the vibration sound by increasing the length of arch-like edges formed between adjacent slots of the inner blade. In the electric shaver, an inner blade having the arch-like edges is moved reciprocally while its outer face contacts with and slides over an inner face of an outer blade to cut beard. The inner blade has an arch-like plate member, as a main body of the inner blade, and it has slots extending from a side wall through a top curved portion to the other side wall, to form arch-like edges between adjacent slots, and the inner blade is connected through a joint to a driver of the main body to be moved reciprocally. Mounting members for the joint are provided at two ends of the inner blade in the longitudinal direction, and the lower ends of the edges at the central portion of the inner blade are set lower than the lower ends of the beads formed above the mounting members of the inner blade.Type: GrantFiled: February 25, 2004Date of Patent: October 31, 2006Assignee: Matsushita Electric Works, Ltd.Inventors: Masaaki Sato, Hiroyuki Kameoka, Takeshi Shiba
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Publication number: 20060150421Abstract: An electric shaver is provided which can enhance the vibration sound by increasing the length of arch-like edges formed between adjacent slots of the inner blade. In the electric shaver, an inner blade having the arch-like edges is moved reciprocally while its outer face contacts with and slides over an inner face of an outer blade to cut beard. The inner blade has an arch-like plate member, as a main body of the inner blade, and it has slots extending from a side wall through a top curved portion to the other side wall, to form arch-like edges between adjacent slots, and the inner blade is connected through a joint to a driver of the main body to be moved reciprocally. Mounting members for the joint are provided at two ends of the inner blade in the longitudinal direction, and the lower ends of the edges at the central portion of the inner blade are set lower than the lower ends of the beads formed above the mounting members of the inner blade.Type: ApplicationFiled: February 25, 2004Publication date: July 13, 2006Applicant: MATSUSHITA ELECTRIC WORKS LTD.Inventors: Masaaki Sato, Hiroyuki Kameoka, Takeshi Shiba