Patents by Inventor Tsukasa Nakaya

Tsukasa Nakaya 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).

  • BITE TYPE TUBE CONNECTION STRUCTURE, TUBE FITTING, VALVE, CLOSING VALVE, REFRIGERATING CYCLE DEVICE, HOT-WATER SUPPLY DEVICE, BITE TYPE TUBE CONNECTION METHOD, AND ON-SITE TUBE CONNECTION METHOD
    Publication number: 20090045624
    Abstract: A fitting has a bite type tube connection structure with a bite type sleeve in cylindrical form. The bite type sleeve is formed of a primary deforming portion and a secondary deforming portion. The primary deforming portion bites into a connection tube 5 or is inserted between the fitting main body and the connection tube in a wedge-like fashion as a result of a first pressing force in the axial direction applied when a fastening nut is fastened. The secondary deforming portion is deformed by a second pressing force in the axial direction applied when the fastening nut is fastened and greater than the first pressing force. When the primary deforming portion bites into the connection tube, the connection tube is temporarily held against the fitting main body. Then, the fastening operation is completed by fastening the fastening nut.
    Type: Application
    Filed: January 30, 2007
    Publication date: February 19, 2009
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Haruo Nakata, Tsukasa Nakaya, Takashi Shimamura