Patents by Inventor Tomiaki Sakano

Tomiaki Sakano 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: 6489696
    Abstract: A rotor of a motor has a cylindrical magnet coaxially disposed with a shaft. The shaft and the magnet are bonded with thermosetting resin formed by injection molding. Since the molding shrinkage of the thermosetting resin is so small that a high preciseness is achieved in the motor structure. This precision structure can reduce vibration due to unbalance of a rotor. Also, an annealing process, in which a motor is left at a temperature higher than the limit temperature for operating the motor, can be eliminated. As a result, the efficiency of producing the motor can be improved.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: December 3, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masahiro Sashino, Masaaki Matsubara, Tomiaki Sakano
  • Publication number: 20020047329
    Abstract: A rotor of a motor has a cylindrical magnet coaxially disposed with a shaft. The shaft and the magnet are bonded with thermosetting resin formed by injection molding. Since the molding shrinkage of the thermosetting resin is so small that a high preciseness is achieved in the motor structure. This precision structure can reduce vibration due to unbalance of a rotor. Also, an annealing process, in which a motor is left at a temperature higher than the limit temperature for operating the motor, can be eliminated. As a result, the efficiency of producing the motor can be improved.
    Type: Application
    Filed: May 11, 2000
    Publication date: April 25, 2002
    Inventors: Masahiro Sashino, Masaaki Matsubara, Tomiaki Sakano
  • Patent number: 5438448
    Abstract: The present invention discloses the construction and manufacturing method of a turning mirror which has a single face or multiple face reflector mirror for scanning laser light in a laser beam printer and the like. The disclosed construction and manufacturing method achieve a low-cost and high-accuracy turning mirror. Photo-setting resin is coated onto the surface of a base mount having a rotating shaft at its center. The surface of the base serves as a substrate for reflector mirror. A glass plate having a good flatness is placed into contact with the resin coating layer. Resin setting light is operated to irradiate the resin coating layer with the peripheral side fringe of the resin coating layer partially or entirely open in order to set the resin coating layer. The glass plate is then separated from the resin coating layer, allowing the flatness of the glass plate to be transferred to the resin coating layer. The turning mirror is then fabricated by attaching a metallic film onto the resin coating layer.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: August 1, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tomoko Nishimura, Tomiaki Sakano, Katsuhiro Murano
  • Patent number: 4504543
    Abstract: This disclosure is directed to a friction material which includes a porous material and capsules containing a hydrophobic substance in a liquid form. The porous material and capsules are formed into a composite structure by a binding agent so as to use the hydrophobic substance contained in the capsules for a component of a lubricating layer to be formed on the friction material upon breakage of the capsules.
    Type: Grant
    Filed: July 20, 1983
    Date of Patent: March 12, 1985
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Fumitoshi Yamashita, Tomiaki Sakano
  • Patent number: 4263711
    Abstract: An armature of double insulation construction for commutator motors of the wound-rotor type and a method of making the armature. An insulator insulating an iron core from a shaft and windings from the iron core also insulates a commutator from the shaft and unites the shaft, iron core and commutator into an integral rigid body. The armature can be fabricated with high precision by a simplified method.
    Type: Grant
    Filed: August 31, 1978
    Date of Patent: April 28, 1981
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tomiaki Sakano, Hiromichi Yamamoto, Shigeru Kajiwara
  • Patent number: 4219748
    Abstract: The present invention is a stator terminal construction for use in a rotary electrical machine such as an electric motor. The coil element of the stator coil is inserted in an iron core and a coil end of the coil element extends outwardly from a corresponding end of the core. This coil end has coil winding ends extending out of it and connected to lead wires for an external power source. The terminal structure is constituted by a block of moldable resin positioned directly on the coil end having the connections between the coil winding ends and the lead wires embedded therein. The terminal structure thus serves to insulate and fix the connections between the coil winding ends and the lead wires.
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: August 26, 1980
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yukinobu Sakaguchi, Tomiaki Sakano, Junichi Hirata