Patents by Inventor Teruie Takemasu

Teruie Takemasu 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: 11293476
    Abstract: A dual-threaded screw structure having two kinds of threads formed on a shank, namely, a first thread consisting of one or more threads and a second thread having a lead larger than a lead of the first thread is provided herein. The claimed configuration has a beneficial effect of preventing looseness when the screw structure is fastened with double nuts. One embodiment of the present invention exhibits an example of a dual-threaded screw structure, in which a root diameter between the ridges of the hill-like second thread ridges is formed to be larger by 10% of a height of the ridges than an effective diameter of a first thread. In this case, an inner diameter of an internal thread of a second nut for preventing looseness is formed to be larger than the effective diameter of the first thread by 10% of the height of the ridges.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: April 5, 2022
    Assignee: FORM ROLL TECH CO., LTD.
    Inventors: Toshinaka Shinbutsu, Teruie Takemasu, Shuichi Amano
  • Publication number: 20200132105
    Abstract: A dual-threaded screw structure having two kinds of threads formed on a shank, namely, a first thread consisting of one or more threads and a second thread having a lead larger than a lead of the first thread is provided herein. The claimed configuration has a beneficial effect of preventing looseness when the screw structure is fastened with double nuts. One embodiment of the present invention exhibits an example of a dual-threaded screw structure, in which a root diameter between the ridges of the hill-like second thread ridges is formed to be larger by 10% of a height of the ridges than an effective diameter of a first thread. In this case, an inner diameter of an internal thread of a second nut for preventing looseness is formed to be larger than the effective diameter of the first thread by 10% of the height of the ridges.
    Type: Application
    Filed: March 27, 2019
    Publication date: April 30, 2020
    Inventors: Toshinaka Shinbutsu, Teruie Takemasu, Shuichi Amano
  • Patent number: 10519995
    Abstract: The dual-threaded screw structure 1 has a first thread (S1) and a second thread (S2) with various leads formed on the dual-thread portion and has a function of preventing loosening without insufficiency in strength of the dual-thread portion. This dual-thread portion is composed of a first thread (S1) consisting of a coarse thread with a standard pitch P and a specific second thread (S2). The second thread (S2) is formed continuously on the thread ridge of the first thread (S1). The second thread (S2) has a sectional shape of this thread groove same as or substantially same as the first thread (S1), has a same twisting direction as the first thread (S1) and is a multi-threaded thread having threads with a triangular sectional shape and having a lead (L=n*P) a determined number (n)-times of a standard pitch P.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: December 31, 2019
    Assignee: FORM ROLL TECH CO., LTD.
    Inventors: Toshinaka Shinbutsu, Teruie Takemasu, Shuichi Amano
  • Publication number: 20180163757
    Abstract: The dual-threaded screw structure 1 has a first thread (S1) and a second thread (S2) with various leads formed on the dual-thread portion and has a function of preventing loosening without insufficiency in strength of the dual-thread portion. This dual-thread portion is composed of a first thread (S1) consisting of a coarse thread with a standard pitch P and a specific second thread (S2). The second thread (S2) is formed continuously on the thread ridge of the first thread (S1). The second thread (S2) has a sectional shape of this thread groove same as or substantially same as the first thread (S1), has a same twisting direction as the first thread (S1) and is a multi-threaded thread having threads with a triangular sectional shape and having a lead (L=n*P) a determined number (n)-times of a standard pitch P.
    Type: Application
    Filed: May 27, 2016
    Publication date: June 14, 2018
    Applicant: FORM ROLL TECH CO., LTD.
    Inventors: Toshinaka Shinbutsu, Teruie Takemasu, Shuichi Amano
  • Publication number: 20070069003
    Abstract: A boring such as a high accuracy boring is performed by inputting vibration only in the moving direction of a tool. The device comprises an ultrasonic horn (1) functioning as a vibrator, a punch (2) functioning as a boring tool for boring a work (W) which is an object to be bored, a guide bush (3) guiding the punch (2) in the moving direction, an elastic body (4) for retaining the punch (2) in a floating state on the guide bush (3), and a die (5) functioning as the boring tool formed in pairs with the punch (2). The punch (2) is floatingly retained by the elastic body (4) inside the guide bush (5), and vibration is applied to the punch (2) by the ultrasonic horn (1) to make the punch (2) jump toward the work (W) to strike the work (W) for boring the work (W).
    Type: Application
    Filed: October 14, 2004
    Publication date: March 29, 2007
    Inventors: Teruie Takemasu, Ichiki Terashima
  • Patent number: 7159429
    Abstract: A method and apparatus for manufacturing a bolt capable of mass-producing a multiple screw bolt such as a so-called double screw bolt at a low unit price, and a thread rolling die for use therein. The apparatus for manufacturing a bolt comprises a pair of thread rolling dies (1) which are arranged opposite to each other at a predetermined interval, and a bolt supporting unit (2) which supports a cylindrical bolt material (3) in a predetermined position. The thread rolling dies (1) are provided with a transfer pattern (4) having a coarse thread portion (5) which is part of a coarse thread formed by developing a coarse screw, and projections (6) which are part of a fine thread (6a) formed by developing a fine screw as shown by an imaginary line (6a), the fine thread (6a) being formed cyclically on a root portion (5a) of the coarse thread according to a phase shift between the fine thread and the coarse thread.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: January 9, 2007
    Assignee: Kyushu TLO Company, Limited
    Inventors: Teruie Takemasu, Hiroshi Miyahara
  • Publication number: 20060225477
    Abstract: A method and apparatus for manufacturing a bolt capable of mass-producing a multiple screw bolt such as a so-called double screw bolt at a low unit price, and a thread rolling die for use therein. The apparatus for manufacturing a bolt comprises a pair of thread rolling dies (1) which are arranged opposite to each other at a predetermined interval, and a bolt supporting unit (2) which supports a cylindrical bolt material (3) in a predetermined position. The thread rolling dies (1) are provided with a transfer pattern (4) having a coarse thread portion (5) which is part of a coarse thread formed by developing a coarse screw, and projections (6) which are part of a fine thread (6a) formed by developing a fine screw as shown by an imaginary line (6a), the fine thread (6a) being formed cyclically on a root portion (5a) of the coarse thread according to a phase shift between the fine thread and the coarse thread.
    Type: Application
    Filed: March 19, 2004
    Publication date: October 12, 2006
    Inventors: Teruie Takemasu, Hiroshi Miyahara
  • Patent number: D814283
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: April 3, 2018
    Assignee: FORM ROLL TECH CO., LTD.
    Inventors: Toshinaka Shinbutsu, Teruie Takemasu, Suichi Amano