Patents by Inventor Takao Umezawa

Takao Umezawa 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).

  • Patent number: 10814837
    Abstract: An object of the present invention is to suppress variations in shape of flow channels to have an enlarged flow channel. When an attachment main body 51 of a lid member 50 is attached to a recessed attachment part 46 of a main body member 40, a pair of flange parts 52 provided to the lid member 50 abuts on the main body member 40. Therefore, the insertion amount of the attachment main body 51 into the recessed attachment part 46 in each product can be maintained approximately constant while enlarging a main channel MC and a pair of sub channels SS1 and SS2, which are formed by the main body member 40 and the lid member 50, and variations in shape of these flow channels can be reliably suppress.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: October 27, 2020
    Assignee: Mitsuba Corporation
    Inventors: Takao Umezawa, Atsushi Otani, Hiroshi Yokoyama
  • Patent number: 10562213
    Abstract: The present invention addresses the problem of manufacturing first and second members with different materials when molding injection molding body one after another using first to third molds disposed at 120 degrees from each other on a turntable that performs reciprocating motion at 120 degrees and using fourth to sixth molds provided opposite to the first to third molds, respectively. According to the solution, first to third injection devices are disposed on the sides of fourth to sixth molds, respectively, the first injection device is caused to perform primary injection to mold a first member, and the second and third injection devices are caused to perform primary injection to mold a second member and secondary injection to integrate the first and second members with each other, whereby the first and second members can be manufactured with different materials one after another.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: February 18, 2020
    Assignee: Mitsuba Corporation
    Inventor: Takao Umezawa
  • Publication number: 20170348883
    Abstract: The present invention addresses the problem of manufacturing first and second members with different materials when molding injection molding body one after another using first to third molds disposed at 120 degrees from each other on a turntable that performs reciprocating motion at 120 degrees and using fourth to sixth molds provided opposite to the first to third molds, respectively. According to the solution, first to third injection devices are disposed on the sides of fourth to sixth molds, respectively, the first injection device is caused to perform primary injection to mold a first member, and the second and third injection devices are caused to perform primary injection to mold a second member and secondary injection to integrate the first and second members with each other, whereby the first and second members can be manufactured with different materials one after another.
    Type: Application
    Filed: December 3, 2015
    Publication date: December 7, 2017
    Applicant: Mitsuba Corporation
    Inventor: Takao UMEZAWA
  • Publication number: 20150197218
    Abstract: An object of the present invention is to suppress variations in shape of flow channels to have an enlarged flow channel. When an attachment main body 51 of a lid member 50 is attached to a recessed attachment part 46 of a main body member 40, a pair of flange parts 52 provided to the lid member 50 abuts on the main body member 40. Therefore, the insertion amount of the attachment main body 51 into the recessed attachment part 46 in each product can be maintained approximately constant while enlarging a main channel MC and a pair of sub channels SS1 and SS2, which are formed by the main body member 40 and the lid member 50, and variations in shape of these flow channels can be reliably suppress.
    Type: Application
    Filed: July 17, 2014
    Publication date: July 16, 2015
    Inventors: Takao Umezawa, Atsushi Otani, Hiroshi Yokoyama
  • Patent number: 7855494
    Abstract: An electric connection part between a bulb and a terminal is masked without using a special masking material when a lamp unit is produced through a primary injection step of molding a lamp main body and a lens part while using a movable mold and a fixed mold, a film forming step of covering the lamp main body with a film, and a secondary injection step of uniting the lamp main body and the lens part together with a resinous material. The bulb is incorporated through a step set between the primary injection step and the film forming step. In the state in which the bulb is incorporated in the lamp main body, the surface of the top of the bulb is covered with a film, and a part hidden by the shadow of the film is masked, and hence electric insulation properties are secured.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: December 21, 2010
    Assignee: Mitsuba Corporation
    Inventor: Takao Umezawa
  • Patent number: 7744798
    Abstract: When integrally producing a lamp holder, which is provided with a lamp body and a lens portion, by using a mold-sliding injection system, a lamp holder having a reflection surface formed on the interior surface thereof is produced. A fixed mold is provided with a vacuum deposition apparatus, wherein a lamp holder having a reflection surface is produced by a reflection surface forming process, which is provided between a primary injection process for molding a lamp holder and a lens portion and a secondary injection process for integrating the lamp holder and the lens portion by matching the same together, for vacuum-depositing the reflection surface on the interior surface of the lamp holder.
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: June 29, 2010
    Assignee: Mitsuba Corporation
    Inventors: Motosuke Ishizawa, Takao Umezawa
  • Patent number: 7740783
    Abstract: When forming a film on a work, such as a lamp holder, the work is not set in a film-forming chamber as in the prior art, but a film is formed thereon by using a mold, thereby simplifying the film formation work. A movable mold is matched to a fixed mold in a state where a vacuum deposition apparatus, the film-forming element, is provided in the fixed mold and the work is supported in the movable mold. Next, film formation is carried out with the film-forming space in a vacuum state. Thereafter, the movable mold is opened, wherein the film formation work on the work surface using molds can be carried out with a series of processes.
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: June 22, 2010
    Assignee: Mitsuba Corporation
    Inventors: Motosuke Ishizawa, Takao Umezawa
  • Patent number: 7686487
    Abstract: A door mirror comprising a mirror portion and a side blinker which is one example of lamp bodies allows easily performed maintenance for the side blinker. It is also structured so as to make a lamp body elongated in lateral dimension. A second opening is formed on the back side of a mirror housing with fixing pieces formed on the second opening. A lamp unit integrates a lens portion with the back face of a base body having an inner base and an outer base which covers the front face of the inner base and is structured so that the base end side avoids the vehicle body mounting portion. The lamp unit is inserted into the second opening through the back face side of the mirror housing, and fixing pieces on the lamp unit and the mirror housing-fixing pieces are tightened by screws.
    Type: Grant
    Filed: August 14, 2006
    Date of Patent: March 30, 2010
    Assignee: Mitsuba Corporation
    Inventors: Yoshihiro Takahashi, Yosuke Fukasawa, Motosuke Ishizawa, Takao Umezawa
  • Publication number: 20090243460
    Abstract: An electric connection part between a bulb and a terminal is masked without using a special masking material when a lamp unit is produced through a primary injection step of molding a lamp main body and a lens part while using a movable mold and a fixed mold, a film forming step of covering the lamp main body with a film, and a secondary injection step of uniting the lamp main body and the lens part together with a resinous material. The bulb is incorporated through a step set between the primary injection step and the film forming step. In the state in which the bulb is incorporated in the lamp main body, the surface of the top of the bulb is covered with a film, and a part hidden by the shadow of the film is masked, and hence electric insulation properties are secured.
    Type: Application
    Filed: March 14, 2006
    Publication date: October 1, 2009
    Applicant: OSHIMA ELECTRIC WORKS CO., LTD.
    Inventor: Takao Umezawa
  • Publication number: 20090134543
    Abstract: A vacuum film forming apparatus includes a target chamber in which a target is disposed for performing a vacuum film forming; a first mold at a side of the target chamber; and a second mold that includes a workpiece chamber in which a workpiece is capable of being disposed. The first mold and the second mold are structured such that a film being formed onto the workpiece is capable of being carried out by die matching between the first mold and the second mold, and a shutter device for opening and closing the target chamber is provided to the first mold.
    Type: Application
    Filed: September 11, 2006
    Publication date: May 28, 2009
    Applicant: OSHIMA ELECTRIC WORKS CO., LTD.
    Inventors: Takao Umezawa, Atsuo Kitazume, Hiroshi Takano, Fusami Oyama
  • Publication number: 20080138561
    Abstract: When a lamp unit is formed by applying a resinous material onto an abutting part between a lamp main body and a lens part through a secondary injection process, a mold receiving portion that is shaped like a concave groove and that is entered by a mold face is formed inside an abutting portion of the lamp main body so as to receive an injection force generated when secondary injection is performed. When the lamp main body is pushed out with the abutting portion and is extracted alone, the groove of the mold receiving portion is prevented from being expanded and deformed by receiving a load generated when pushed out. A reinforcing rib with which the mold receiving portion is filled is formed at a location that corresponds to a part of the mold receiving portion pushed out by a push-out member.
    Type: Application
    Filed: March 9, 2006
    Publication date: June 12, 2008
    Applicant: OSHIMA ELECTRIC WORKS CO., LTD.
    Inventor: Takao Umezawa
  • Publication number: 20080113100
    Abstract: A hollow coated molded product is easily produced whose interior is coated, by using first and second moldings injection-molded through a first injecting step. Against first and second moldings injection-molded through a first injecting step, a coating device provided on a robot hand is butted and forms coatings thereon at a step at which a movable mold is separated from the fixed mold and thereafter, the first and second moldings are butted against each other and integrated through a second injecting step, whereby a coated molded product is formed.
    Type: Application
    Filed: January 13, 2006
    Publication date: May 15, 2008
    Applicant: OSHIMA ELECTRIC WORKS CO., LTD.
    Inventor: Takao Umezawa
  • Publication number: 20070277732
    Abstract: A film forming apparatus which can perform a film forming process to a base material while the base material is being mounted on a die for a molding process. The film forming apparatus is provided with a cylinder-shaped frame body (1h) having one end closed with a bottom part and the other end opened, a target (1a) arranged on an inner plane of the bottom part, and a port (3b) formed to penetrate a wall part of the frame body (1h).
    Type: Application
    Filed: March 10, 2005
    Publication date: December 6, 2007
    Applicants: SHINMAYWA INDUSTRIES, LTD., OSHIMA ELECTRIC WORKS CO., LTD.
    Inventors: Nobuo Yoneyama, Takashi Nakayama, Shiro Takigawa, Takao Umezawa, Motosuke Ishizawa, Hiroshi Takano
  • Patent number: 7278767
    Abstract: A door mirror comprising a mirror portion and a side blinker which is one example of lamp bodies allows easily performed maintenance for the side blinker. A second opening is formed on the back side of a mirror housing with fixing pieces formed on the second opening. A lamp unit integrates a lens portion with the back face of a base body having an inner base and an outer base which covers the front face of the inner base. The lamp unit is inserted into the second opening through the back face side of the mirror housing, and fixing pieces of the lamp unit and the mirror housing-fixing pieces are tightened by screws.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: October 9, 2007
    Assignee: Mitsuba Corporation
    Inventors: Yoshihiro Takahashi, Yosuke Fukasawa, Motosuke Ishizawa, Takao Umezawa
  • Publication number: 20070029700
    Abstract: When forming a film on work, such as a lamp holder, the work is not set in a film-forming chamber as in the prior arts, but a film is formed thereon by using a mold, thereby simplifying the film formation work. A movable mold is matched to a fixed mold in a state where a vacuum deposition apparatus, the film-forming element, is provided in the fixed mold and the work is supported in the movable mold. Next, film formation is carried out with the film-forming space in a vacuum state. Thereafter, the movable mold is opened, wherein the film formation work on the work surface using molds can be carried out with a series of processes.
    Type: Application
    Filed: May 17, 2004
    Publication date: February 8, 2007
    Applicant: OSHIMA ELECTRIC WORKS CO., LTD.
    Inventors: Motosuke Ishizawa, Takao Umezawa
  • Publication number: 20070018351
    Abstract: When integrally producing a lamp holder, which is provided with a lamp body and a lens portion, by using a mold-sliding injection system, a lamp holder having a reflection surface formed on the interior surface thereof is produced. A fixed mold is provided with a vacuum deposition apparatus, wherein a lamp holder having a reflection surface is produced by a reflection surface forming process, which is provided between a primary injection process for molding a lamp holder and a lens portion and a secondary injection process for integrating the lamp holder and the lens portion by matching the same together, for vacuum-depositing the reflection surface on the interior surface of the lamp holder.
    Type: Application
    Filed: May 17, 2004
    Publication date: January 25, 2007
    Applicant: Oshima Electric Works Co., Ltd.
    Inventors: Motosuke Ishizawa, Takao Umezawa
  • Publication number: 20060274543
    Abstract: A door mirror comprising a mirror portion and a side blinker which is one example of lamp bodies allows easily performed maintenance for the side blinker. It is also structured so as to make a lamp body elongated in lateral dimension. A second opening is formed on the back side of a mirror housing with fixing pieces formed on the second opening. A lamp unit integrates a lens portion with the back face of a base body having an inner base and an outer base which covers the front face of the inner base and is structured so that the base end side avoids the vehicle body mounting portion. The lamp unit is inserted into the second opening through the back face side of the mirror housing, and fixing pieces on the lamp unit and the mirror housing-fixing pieces are tightened by screws.
    Type: Application
    Filed: August 14, 2006
    Publication date: December 7, 2006
    Applicant: MITSUBA CORPORATION
    Inventors: Yoshihiro Takahashi, Yosuke Fukasawa, Motosuke Ishizawa, Takao Umezawa
  • Publication number: 20050276057
    Abstract: A door mirror comprising a mirror portion and a side blinker which is one example of lamp bodies allows easily performed maintenance for the side blinker. A second opening is formed on the back side of a mirror housing with fixing pieces formed on the second opening. A lamp unit integrates a lens portion with the back face of a base body having an inner base and an outer base which covers the front face of the inner base. The lamp unit is inserted into the second opening through the back face side of the mirror housing, and fixing pieces of the lamp unit and the mirror housing-fixing pieces are tightened by screws.
    Type: Application
    Filed: March 22, 2004
    Publication date: December 15, 2005
    Inventors: Yoshihiro Takahashi, Yosuke Fukasawa, Motosuke Ishizawa, Takao Umezawa
  • Publication number: 20040061249
    Abstract: In order to eliminate post-molding mounting of a bulb 3 and a terminals 7 using a socket, when molding of a side turn signal blinker 1 in a manner of die slide injection, a process to mount the bulb 3 and the terminals 7 to a housing 4 is provided between a process to separate a first and second dies 9 and 10 from each other, which has carried out a primary injection molding of a lens portion 2 and the housing 4 as semi-finished products, and a process in which the dies are slid, the lens portion 2 and the housing 4 are butted and the secondary injection is carried out; thereby post-molding mounting of the bulb and the terminals is eliminated and the side turn signal blinker 1 in which the bulb 3 and the terminals 7 have been inserted, is obtained.
    Type: Application
    Filed: May 9, 2003
    Publication date: April 1, 2004
    Inventors: Takao Umezawa, Yousuke Fukasawa, Katsuo Matsunaga, Hitoshi Konuma, Yoshihiro Takahashi
  • Patent number: D479706
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: September 16, 2003
    Assignee: Mitsuba Corporation
    Inventors: Yousuke Fukasawa, Takao Umezawa