Patents by Inventor Yukihiro Takatsu

Yukihiro Takatsu 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).

  • Publication number: 20190249270
    Abstract: Provided is a hot-band annealing equipment provided with a heating zone, a soaking zone and a cooling zone for subjecting a Si-containing hot rolled steel sheet to hot-band annealing, wherein when the Si-containing hot rolled steel sheet is subjected to hot-band annealing with the hot-band annealing equipment provided with a rapid heating device at an upstream side of the heating zone and/or in an inlet side of the heating zone, the hot rolled steel sheet is heated by not lower than 50° C. at a heating rate of not less than 15° C./s by using the rapid heating device to improve a descaling property, whereby descaling can be performed only by pickling without requiring mechanical descaling or heating the steel sheet in the pickling process. Also provided are a hot-band annealing method and a descaling method using the above equipment.
    Type: Application
    Filed: October 11, 2017
    Publication date: August 15, 2019
    Applicant: JFE Steel Corporation
    Inventors: Goki Yamada, Yoshimitsu Harada, Takahiro Takatsu, Yukihiro Matsubara, Yuta Tamura
  • Patent number: 4428261
    Abstract: A screw feed apparatus for use with a power screwdriving tool comprises a casing relatively slidably mounted on an adapter detachable to the tool, a pair of brackets mounted to the forward end of the casing, a pair of feed sprockets disposed within the brackets and engageable with a magazine belt which carries a series of self-drilling screws, a ratchet wheel supported by the brackets so as to be co-rotatable with the feed sprockets, a slide member supported on the casing so as to move toward the ratchet wheel in response to forward movement of the adapter and move away from the ratchet wheel in response to rearward movement of the adapter, and a claw member operatively supported by the slide member so as to force the ratchet wheel to rotate intermittently by a regular pitch as the slide member moves away from the ratchet wheel.
    Type: Grant
    Filed: February 23, 1982
    Date of Patent: January 31, 1984
    Assignee: Nisco Inc.
    Inventors: Yukihiro Takatsu, Shoichi Yamamoto, Masaru Kamioka