Patents by Inventor Katsuharu Uehara

Katsuharu Uehara 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).

  • Apparatus for assembling fins and tubes for heat exchangers
    Patent number: 4698904
    Abstract: An apparatus for producing various heat exchangers is disclosed in which a plurality of heat exchangers disposed side by side are formed at once. A series of manufacturing stations for working heat exchanger components such as fins and tubes and for opening the tubes are arranged in an endless manner to thereby automatically carry out the production steps with a high productivity while meeting various requirements of the specifications of the heat exchangers with a high flexibility.
    Type: Grant
    Filed: August 20, 1986
    Date of Patent: October 13, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Yoshio Nozawa, Izumi Ochiai, Yukio Kitayama, Masahiro Miyagi, Katsuharu Uehara, Takahiko Deguchi, Keikichi Morita, Katsuo Arai, Tamotsu Nakayama
  • Tube-enlarging press for use in heat exchanger fabrication
    Patent number: 4597171
    Abstract: Disclosed is a tube-enlarging press in which clamping units are provided for preventing the fins and tubes used in a heat exchanger, from being buckled. The clamping units are provided with a through-hole for permitting the passage therethrough of mandrels falling outside of the area of the fin when the mandrels are lowered during the tube enlarging process. Therefore, the arrangements and preparations for replacement of the mandrels can be omitted.
    Type: Grant
    Filed: August 17, 1984
    Date of Patent: July 1, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Yukio Kitayama, Izumi Ochiai, Yoshio Nozawa, Masahiro Miyagi, Tadaaki Ayabe, Katsuharu Uehara
  • Method of stacking fins of heat exchangers
    Patent number: 4566359
    Abstract: A method of stacking fins of heat exchangers suitable for use in producing fins of a plurality of heat exchangers arranged in a group widthwise thereof, characterized by causing one group of fins after another to adhere to a suction plate and forcedly inserting tube receiving apertures formed beforehand in the fins into stacking bars to thereby stack the groups of fins.
    Type: Grant
    Filed: February 15, 1984
    Date of Patent: January 28, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Miyagi, Katsuharu Uehara, Yoshio Nozawa, Takahiko Deguchi