Patents by Inventor Masanori Morisawa

Masanori Morisawa 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).

  • Direct-current motor with two drive magnets
    Patent number: 4570093
    Abstract: A direct-current motor includes a rotatable shaft, a core mounted on the rotatable shaft and supporting windings disposed around the core, the core having winding-free portions, a first drive magnet disposed in radially confronting relation to the winding-free portions with an air gap, and magnetized substantially perpendicularly to the rotatable shaft, and a second drive magnet disposed in axially confronting relation to the winding-free portions with an air gap, and magnetized substantially axially of the rotatable shaft.
    Type: Grant
    Filed: June 1, 1984
    Date of Patent: February 11, 1986
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshihiro Morii, Teruaki Kitamori, Masanori Morisawa
  • Process for fabricating cup-shaped coreless armature
    Patent number: 4337568
    Abstract: A process for fabricating a cup-shaped coreless armature by placing a cup-shaped armature winding and a component including a commutator for constituting the armature into a heating die assembly along with a molding resin member in the form of a solid at room temperature, clamping the die assembly to melt the resin member and thereafter curing the resin to unite the winding and the commutator into a rigid body with the resin.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: July 6, 1982
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Masanori Morisawa
  • Permanent magnet with reduced thickness at the pole areas for small size d-c motors
    Patent number: 4181866
    Abstract: A cylindrical field magnet for use in small size d-c motors having a coreless armature. The magnet includes magnetic pole portions varying in wall thickness from the interpolar portions and possesses an increased quantity of magnetic flux in its entirety without an increase in its outside diameter.
    Type: Grant
    Filed: May 18, 1978
    Date of Patent: January 1, 1980
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Masanori Morisawa