Patents by Inventor Jyuzaemon Iwasaki
Jyuzaemon Iwasaki 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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Patent number: 9527219Abstract: A height dimension D1 of a head section 4 is smaller than a front-back dimension D2 of the head section 4. The head section 4 has therein a linear actuator 12 as a drive source. Inner blades 13 are coupled to a drive coupling section protruding form an actuator main section. A height dimension of the actuator main section is smaller than a front-back dimension of the actuator main section.Type: GrantFiled: September 21, 2010Date of Patent: December 27, 2016Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Jyuzaemon Iwasaki, Makoto Fukutani, Hiroaki Shimizu, Toshio Ikuta
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Patent number: 9399302Abstract: An electric shaver includes a rod-shaped body part, a head part, and an interposer. The head part projects from one end portion, in a longitudinal direction, of the body part and swingably attached to the body part. The head part includes a shaving portion and a drive mechanism. The interposer is configured to support the head part swingably about a first swing axis parallel with a longitudinal direction of the shaving portion, and to be supported on the body part swingably about a second swing axis orthogonal to the projecting direction of the head part and orthogonal to the first swing axis.Type: GrantFiled: December 11, 2013Date of Patent: July 26, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Hiroaki Shimizu, Hiroshi Shigeta, Shin Hosokawa, Jyuzaemon Iwasaki
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Patent number: 9248578Abstract: Bars 40 include a hair raising bar 45 having a hair raising portion 45g raising body hair 75. A cross section of the hair raising portion 45g has a profile shape including connecting elements 80 which are connected, each connecting element being at least any one of a line segment 81 and an arc line 82.Type: GrantFiled: March 16, 2011Date of Patent: February 2, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Noboru Kobayashi, Hiroaki Shimizu, Shunsuke Komori, Toshio Ikuta, Jyuzaemon Iwasaki
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Patent number: 9199383Abstract: A blade of a reciprocating electric shaver includes a newly provided guide frame freely detachably held on a holding frame provided on a shaver body, in which, in the guide frame, there are provided: coupling portions to which an outer edge frame that fixes an outer edge thereto is coupled; and spring receiving portions which support lower ends of inner edge push-up springs.Type: GrantFiled: July 3, 2008Date of Patent: December 1, 2015Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Hiroaki Shimizu, Shunsuke Komori, Takeshi Shiba, Jyuzaemon Iwasaki
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Patent number: 9108325Abstract: An electric shaver includes: a main body; an outer blade provided to an end of the main body and having a blade hole defined by a bar; and an inner blade provided inward of the outer blade and configured to reciprocate in a longitudinal direction of the outer blade to cut hair in the blade hole with the outer blade. The bar has a hair raising portion coming in contact with hair upon movement of the outer blade on a skin surface to raise hair up from the skin surface. A contact pressure on the skin surface to be exerted by the outer blade in a first portion of the outer blade is greater than that in a second portion of the outer blade. Hair raising performance in raising hair up from the skin surface in the first portion is smaller than hair raising performance in the second portion.Type: GrantFiled: January 19, 2011Date of Patent: August 18, 2015Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shigetoshi Sakon, Kenji Narita, Jyuzaemon Iwasaki, Makoto Fukutani, Hiroaki Shimizu, Takeshi Shiba
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Patent number: 8925205Abstract: An electric shaver 1 includes: outer blades 8 having blade holes 50 defined by bars; and inner blades 13 which is provided inside of the outer blades 8 and moved relative to the outer blades 8 to cut body hair 71 inserted into the blade holes 50. A first bar 43 in which a skin contact surface 43a coming into contact with skin 70 is positioned on the inner blade 13 side of a skin contact surface 45j of a hair raising bar 45 is provided adjacent to and forward of the hair raising bar 45.Type: GrantFiled: March 16, 2011Date of Patent: January 6, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Jyuzaemon Iwasaki, Hiroaki Shimizu, Noboru Kobayashi, Shunsuke Komori, Toshio Ikuta
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Publication number: 20140165406Abstract: An electric shaver includes a rod-shaped body part, a head part, and an interposer. The head part projects from one end portion, in a longitudinal direction, of the body part and swingably attached to the body part. The head part includes a shaving portion and a drive mechanism. The interposer is configured to support the head part swingably about a first swing axis parallel with a longitudinal direction of the shaving portion, and to be supported on the body part swingably about a second swing axis orthogonal to the projecting direction of the head part and orthogonal to the first swing axis.Type: ApplicationFiled: December 11, 2013Publication date: June 19, 2014Applicant: PANASONIC CORPORATIONInventors: Hiroaki SHIMIZU, Hiroshi SHIGETA, Shin HOSOKAWA, Jyuzaemon IWASAKI
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Patent number: 8661688Abstract: 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: GrantFiled: December 30, 2009Date of Patent: March 4, 2014Assignee: Panasonic CorporationInventors: Hiroshi Shigeta, Masanobu Yamasaki, Shin Hosokawa, Takeshi Shiba, Jyuzaemon Iwasaki
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Patent number: 8627574Abstract: An electric shaver includes a rod-shaped body part, a head part, and an interposer. The head part projects from one end portion, in a longitudinal direction, of the body part and swingably attached to the body part. The head part includes a shaving portion and a drive mechanism. The interposer is configured to support the head part swingably about a first swing axis parallel with a longitudinal direction of the shaving portion, and to be supported on the body part swingably about a second swing axis orthogonal to the projecting direction of the head part and orthogonal to the first swing axis.Type: GrantFiled: December 30, 2009Date of Patent: January 14, 2014Assignee: Panasonic CorporationInventors: Hiroaki Shimizu, Hiroshi Shigeta, Shin Hosokawa, Jyuzaemon Iwasaki
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Patent number: 8458911Abstract: An electric shaver includes a rod-shaped body part, a head part, and a link mechanism. The head part projects from one end portion of the body part and is swingably attached to the body part with a support base between the body part and the head part. The head part includes a shaving portion and a drive mechanism. The shaving portion is elongated in a direction orthogonal to a projecting direction of the head part and has paired blades configured to operate relative to each other. The drive mechanism is configured to drive at least one of the paired blades. The link mechanism includes two link arms each connected to the support base and the head part respectively at connecting axes parallel to a longitudinal direction of the shaving portion. The link mechanism is configured to support the head part on the support base swingably.Type: GrantFiled: November 21, 2012Date of Patent: June 11, 2013Assignee: Panasonic CorporationInventors: Hiroaki Shimizu, Hiroshi Shigeta, Shin Hosokawa, Jyuzaemon Iwasaki
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Patent number: 8381405Abstract: 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 ready.Type: GrantFiled: December 30, 2009Date of Patent: February 26, 2013Assignee: Panasonic CorporationInventors: Hiroshi Shigeta, Masanobu Yamasaki, Shin Hosokawa, Takeshi Shiba, Jyuzaemon Iwasaki
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Patent number: 8347508Abstract: An electric shaver includes a rod-shaped body part, a head part, and a link mechanism. The head part projects from one end portion, in a longitudinal direction, of the body part and is swingably attached to the body part with a support base between the body part and the head part. The head part includes a shaving portion and a drive mechanism. The shaving portion is formed to be elongated in a direction orthogonal to a projecting direction of the head part and has paired blades configured to operate relative to each other. The drive mechanism is configured to drive at least one of the paired blades. The link mechanism includes two link arms each connected to the support base and the head part respectively at connecting axes parallel to a longitudinal direction of the shaving portion. The link mechanism is configured to support the head part on the support base swingably.Type: GrantFiled: December 22, 2009Date of Patent: January 8, 2013Assignee: Panasonic CorporationInventors: Hiroaki Shimizu, Hiroshi Shigeta, Shin Hosokawa, Jyuzaemon Iwasaki
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Publication number: 20120324732Abstract: Hair lifting frames are provided in a range between a top of a first outer blade located on one side in the traveling direction and a top of a second outer blade located on the other side in the traveling direction in the use of a shaver main body (an electric shaver). Accordingly, the hair lifting frames can efficiently lift body hair up, and at the same time, an influence (damage) on a skin surface can be prevented.Type: ApplicationFiled: March 24, 2011Publication date: December 27, 2012Applicant: PANASONIC CORPORATIONInventors: Hiroaki Shimizu, Noboru Kobayashi, Shunsuke Komori, Toshio Ikuta, Jyuzaemon Iwasaki
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Publication number: 20120317815Abstract: Second hair lifting frames provided on the rear side in the traveling direction is arranged closer to a top than first hair lifting frames provided on the front side in the traveling direction. Accordingly, the differences in hair lifting ability between the first hair lifting frames and the second hair lifting frames can be reduced so as to lift body hair up more efficiently.Type: ApplicationFiled: March 24, 2011Publication date: December 20, 2012Applicant: PANASONIC CORPORATIONInventors: Hiroaki Shimizu, Noboru Kobayashi, Shunsuke Komori, Toshio Ikuta, Jyuzaemon Iwasaki
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Patent number: 8296955Abstract: An electric shaver in which a blade frame part is attached to an upper portion of a body part, the blade frame part including an outer blade, an outer blade frame to fix the outer blade thereto, a holding frame to hold the outer blade frame vertically movable, and an outer peripheral frame connected to the holding frame, the upper portion including an inner blade. The holding frame is detachably attached to the outer peripheral frame from an under side thereof, and the outer peripheral frame entirely covers an outer periphery of the holding frame.Type: GrantFiled: June 13, 2008Date of Patent: October 30, 2012Assignee: Panasonic CorporationInventors: Masaaki Sato, Takeshi Shiba, Jyuzaemon Iwasaki
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Publication number: 20120151773Abstract: A height dimension D1 of a head section 4 is smaller than a front-back dimension D2 of the head section 4. The head section 4 has therein a linear actuator 12 as a drive source. Inner blades 13 are coupled to a drive coupling section protruding form an actuator main section. A height dimension of the actuator main section is smaller than a front-back dimension of the actuator main section.Type: ApplicationFiled: September 21, 2010Publication date: June 21, 2012Applicant: PANASONIC CORPORATIONInventors: Jyuzaemon Iwasaki, Makoto Fukutani, Hiroaki Shimizu, Toshio Ikuta
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Publication number: 20120151774Abstract: An electric shaver (11) is provided with a grip section (12) and a head (13) which is provided at the upper end of the grip section (12). Five outer blades (20) into which body hair can be introduced are provided at the upper end of the head (13) and arranged side by side in the front-rear direction (X) of the head (13). Each of the outer blades (20) is provided thereinside with an inner blade (30), which can reciprocate in the widthwise direction (Y) of the head (13) and cuts and removes body hair, which is introduced into the outer blade (20), by sandwiching the body hair between the inner blade (30) and the outer blade (20). The outer blades (20) include a slit blade (21) which is located at the center of the outer blades (20) in the front-rear direction (X), and net blades (22-25), a pair of which is provided at each side of the head (13) in the front-rear direction (X) of the head (13) and centered about the slit blade (21).Type: ApplicationFiled: September 22, 2010Publication date: June 21, 2012Applicant: Panasonic CorporationInventors: Hiroaki Shimizu, Shunsuke Komori, Jyuzaemon Iwasaki, Toshio Ikuta, Shin Hosokawa
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Patent number: 8146253Abstract: 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: GrantFiled: April 20, 2007Date of Patent: April 3, 2012Assignee: Panasonic CorporationInventors: Masaaki Sato, Takeshi Shiba, Jyuzaemon Iwasaki, Shinji Fujimoto, Shunsuke Komori
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Publication number: 20110232098Abstract: Bars 40 include a hair raising bar 45 having a hair raising portion 45g raising body hair 75. A cross section of the hair raising portion 45g has a profile shape including connecting elements 80 which are connected, each connecting element being at least any one of a line segment 81 and an arc line 82.Type: ApplicationFiled: March 16, 2011Publication date: September 29, 2011Applicant: PANASONIC ELECTRIC WORKS CO., LTD.Inventors: Noboru KOBAYASHI, Hiroaki SHIMIZU, Shunsuke KOMORI, Toshio IKUTA, Jyuzaemon IWASAKI
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Publication number: 20110232097Abstract: An electric shaver 1 includes: outer blades 8 having blade holes 50 defined by bars; and inner blades 13 which is provided inside of the outer blades 8 and moved relative to the outer blades 8 to cut body hair 71 inserted into the blade holes 50. A first bar 43 in which a skin contact surface 43a coming into contact with skin 70 is positioned on the inner blade 13 side of a skin contact surface 45j of a hair raising bar 45 is provided adjacent to and forward of the hair raising bar 45.Type: ApplicationFiled: March 16, 2011Publication date: September 29, 2011Applicant: PANASONIC ELECTRIC WORKS CO., LTD.Inventors: Jyuzaemon IWASAKI, Hiroaki SHIMIZU, Noboru KOBAYASHI, Shunsuke KOMORI, Toshio IKUTA