Patents by Inventor Teruomi Yanagidate

Teruomi Yanagidate 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 of manufacturing a shock absorbing type steering shaft
    Patent number: 5623756
    Abstract: In a method of manufacturing a shock absorbing type steering shaft, the fore end portion of a tubular outer shaft having a female serration formed on the inner peripheral surface thereof and the fore end portion of an inner shaft having a male serration formed on the outer peripheral surface thereof are brought into engagement with each other, and then the fore end portions of the two shafts are plastically deformed in the diametral direction thereof. Thereafter, the outer shaft and the inner shaft are displaced relative to each other toward each other in the axial direction thereof. The fore end portion of the small-diametered portion of the outer shaft is then pressure-fitted into the base end portion of the large-diametered portion of the inner shaft. At the same time, the fore end portion of the large-diametered portion is pressure-fitted into the base end portion of the small-diametered portion.
    Type: Grant
    Filed: July 17, 1995
    Date of Patent: April 29, 1997
    Assignee: NSK Ltd.
    Inventors: Teruomi Yanagidate, Kiyoshi Sadakata