Patents by Inventor Toyoo Kozima

Toyoo Kozima 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).

  • Method and a punch/die assembly for the production of heat exchanger fins
    Patent number: 4184355
    Abstract: A method of producing heat exchanger fins, comprising the steps of perforating an aperture of a small diameter in a predetermined portion of a sheet material, while simultaneously forming a projecting cylinder of a diameter smaller than that of the flanged aperture to be ultimately formed, and machining the projecting cylinder into a flange of a predetermined dimension by simultaneous burring an ironing operations using a punch of a predetermined size.
    Type: Grant
    Filed: March 16, 1978
    Date of Patent: January 22, 1980
    Assignee: Hidaka Engineering Co., Ltd.
    Inventor: Toyoo Kozima
  • Method for the production of heat exchanger fins
    Patent number: 4109501
    Abstract: A method of producing heat exchanger fins, comprising the steps of perforating an aperture of a small diameter in a predetermined portion of a sheet material, while simultaneously forming a projecting cylinder of a diameter smaller than that of the flanged aperture to be ultimately formed, and machining the projecting cylinder into a flange of a predetermined dimension by simultaneous burring an ironing operations using a punch of a predetermined size.
    Type: Grant
    Filed: March 14, 1977
    Date of Patent: August 29, 1978
    Assignee: Hidaka Engineering Co., Ltd.
    Inventor: Toyoo Kozima
  • Punch and die assembly for use in the production of heat exchanger fins
    Patent number: 4098108
    Abstract: A punch and die assembly for use in the production of heat exchanger fins comprising: a fixed lower tool holder including an ironing punch having the same dimension as a predetermined flanged aperture, and a movable upper tool holder having a die matching said ironing punch, wherein said punch can always be held concentrically to the die without requiring any particular adjustment and whereby uniform products can be continuously obtained.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: July 4, 1978
    Assignee: Hidaka Engineering Company, Limited
    Inventor: Toyoo Kozima
  • Method and a punch/die assembly for the production of heat exchanger fins
    Patent number: 4055067
    Abstract: A method of producing heat exchanger fins, comprising the steps of perforating an aperture of a small diameter in a predetermined portion of a sheet material, while simultaneously forming a perpendicularly projecting cylinder of a diameter smaller than that of the flanged aperture to be ultimately formed, and machining said perpendicularly projecting cylinder into a flange of a predetermined dimension by simultaneous burring and ironing operations using a punch of a predetermined size.
    Type: Grant
    Filed: August 13, 1975
    Date of Patent: October 25, 1977
    Assignee: Hidaka Engineering Co., Ltd.
    Inventor: Toyoo Kozima