Patents by Inventor Osamu Hirao

Osamu Hirao 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).

  • Patent number: 7437896
    Abstract: There is provided a sock that causes no feeling of tightness or pressure when a toe is housed, has no connecting portion, causes no tightening of knitted fabric itself, and has good appearance. The sock includes a toe housing portion that forms a laterally asymmetrical substantially planar trapezoidal shape slanted to a thumb side that is provided continuously with a cylindrically knitted portion. The cylindrically knitted portion forms a sole portion and an instep portion. The toe housing portion is provided with a forward knitted portion for increasing thickness between a front portion and a back portion invertedly knitted to form a substantially planar trapezoidal shape, along contours thereof.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: October 21, 2008
    Assignee: Cooma Co., Ltd.
    Inventors: Osamu Hirao, Noriyoshi Yoshimura
  • Publication number: 20080034802
    Abstract: There is provided a sock that causes no feeling of tightness or pressure when a toe is housed, has no connecting portion, causes no tightening of knitted fabric itself, and has good appearance. The sock includes a toe housing portion that forms a laterally asymmetrical substantially planar trapezoidal shape slanted to a thumb side that is provided continuously with a cylindrically knitted portion. The cylindrically knitted portion forms a sole portion and an instep portion. The toe housing portion is provided with a forward knitted portion for increasing thickness between a front portion and a back portion invertedly knitted to form a substantially planar trapezoidal shape, along contours thereof.
    Type: Application
    Filed: March 16, 2005
    Publication date: February 14, 2008
    Applicant: Cooma Co., Ltd.
    Inventors: Osamu Hirao, Noriyoshi Yoshimura
  • Patent number: 5934058
    Abstract: A method and apparatus are described for piercing severed yarn to a sliver in a spinning machine in a manner to prevent formation of an excessively long or frail piecing portion by passing leading yarn Y' through a twist device T; driving draft rollers 1, 2, which have been stopped following severance of the yarn to remove the thinned, tapered tip of sliver 6 from the front roller 4; and then introducing sliver for piecing into the twist device while removing a portion of the fibers constituting such a sliver to make the piecing portion thereof more nearly as thick as the leading yarn.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: August 10, 1999
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Osamu Hirao, Masahiko Nishimura
  • Patent number: 5813209
    Abstract: Piecing method of a spinning machine whereby, after holding outside a twist device both a leading yarn ejected from the sliver guide entrance of a twist device in a stationary state and a sliver delivered by a re-operated draft device, the twist device is operated, the sliver supplied to the twist device and the fibers comprising the sliver are entangled in the leading yarn pulled from the twist device. The success rate of yarn piecing may be improved without detailed adjustment of the pulling timing of the leading yarn guided into the twist device and the supply timing of the sliver supplied to the twist device.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: September 29, 1998
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Osamu Hirao, Masahiko Nishimura
  • Patent number: 5406782
    Abstract: In a drawing false-twisting method, which draws a twisted yarn, heat-sets the drawn and twisted yarn, cools the yarn by making the yarn travel in contact with the surface of the guide groove of a cooling plate and untwists the yarn to obtain a textured bulk yarn, the yarn is moved laterally to spread the oil transferred from the yarn to the surface of the guide groove.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: April 18, 1995
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Hisao Inuyama, Masaru Kimura, Osamu Hirao
  • Patent number: 5136835
    Abstract: A false twisting method and device for twisting a yarn which runs under a predetermined tension includes an arrangement wherein the yarn is wound about a member such as a cylindrical member positioned approximately at the halfway point of the running of the yarn, and a yarn downstream of the wound member and a yarn upstream of the wound member intersect each other in a contacted state to provide a twist in the yarn.
    Type: Grant
    Filed: September 17, 1991
    Date of Patent: August 11, 1992
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Osamu Hirao
  • Patent number: 5094068
    Abstract: A yarn false twister in which an endless belt an a first rotary member are disposed across each other to constitute a nip point at which a yarn is twisted, and a second rotary member, on which the yarn is wound after the nipping thereof so that the upstream and downstream portions of the wound yarn cross in contact with each other, is provided coaxially with the first rotary member so that the second rotary member can be rotated independently of the first rotary member.
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: March 10, 1992
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Osamu Hirao
  • Patent number: 4540971
    Abstract: A metal oxide varistor is disclosed which a component of grain bodies comprised of zinc oxide and a component of grain boundary layers comprised of another metallic oxide, containing metal other than zinc wherein at least a portion of these starting materials comprised a fine particle powder prepared by a co-precipitatin method.The metal oxide varistor of the present invention is excellent in varistor characteristics such as non-linearity to voltage, life performances and capability of energy dissipation, is small in a scatter of the above characteristics between manufacture lots or within each lot at the time of manufacture, and has a good quality stability. Unexpected results are obtained when the co-precipitated fine particles are subjected to a refrigeration-dehydration type process.
    Type: Grant
    Filed: June 22, 1983
    Date of Patent: September 10, 1985
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Hideyuki Kanai, Takashi Takahashi, Motomasa Imai, Osamu Furukawa, Hiroshi Endo, Osamu Hirao, Masaru Hayashi