Patents by Inventor Yasuo Yoshizawa

Yasuo Yoshizawa 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: 5570607
    Abstract: A fulcrum of a lever member which is rotatably supported by a stationary shaft has force and action points provided with a force point regulator and an action point regulator, respectively. Each of the regulators has a roller and a pair of guide plates guiding the roller between the guide plates as the lever member is rotated about the fulcrum supported by the stationary shaft.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: November 5, 1996
    Assignee: Yoshiki Industrial Co., Ltd.
    Inventor: Yasuo Yoshizawa
  • Patent number: 5535709
    Abstract: An apparatus for mutual conversion between circular motion and reciprocal motion includes a lever member which is rotatably mounted on a line connecting a rotational center and a circumference of a rotary disk, the lever member having a fulcrum, an action point and a force point, and being provided with a first regulator serving as an action point regulator and a second regulator serving as a movable fulcrum regulator. The first regulator is coupled to a reciprocating body. The movable fulcrum regulator has support members for supporting the fulcrum point and the first regulator has support members for supporting the action point in a longitudinal direction of the lever member.
    Type: Grant
    Filed: May 12, 1994
    Date of Patent: July 16, 1996
    Assignee: Yoshiki Industrial Co., Ltd.
    Inventor: Yasuo Yoshizawa
  • Patent number: 5479838
    Abstract: A lever unit 11 having a fulcrum regulator 12 movably connected to a first motor 14 and a force point regulator 13 movably connected to a second motor 15, in which the motor 15 is driven while the motor 14 is stopped, thereby moving an injection mold 20A to come close to the other mold 20B, and mold locking of the molds 20A and 20B is executed by driving the motor 15 at this position.
    Type: Grant
    Filed: July 21, 1994
    Date of Patent: January 2, 1996
    Assignee: Yoshiki Industrial Co., Ltd.
    Inventor: Yasuo Yoshizawa
  • Patent number: 5182967
    Abstract: A lever member (1) is pivotally supported on a shaft for a roller (2) which is in rolling contact with a guide plate (3). One end of the lever member (1) is connected to a force point regulator (4), and the other end of the lever member is connected to an action point regulator (6).
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: February 2, 1993
    Assignee: Yoshiki Industrial Co., Ltd.
    Inventors: Yasuo Yoshizawa, Mitsuo Kato
  • Patent number: 5011414
    Abstract: A large number of keys arranged in a matrix are provided on the keyboard (KB) of a host computer. Of these keys, keys (K10, . . . , K15, . . . ), located at positions corresponding to Learning terminals in a classroom, are assigned to the respective learning terminals.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: April 30, 1991
    Assignees: Yoshiki Industrial Co., Ltd, Uchida Yoko Co., Ltd.
    Inventors: Yasuo Yoshizawa, Hiroichi Kawaguchi, Kazunari Seto
  • Patent number: 4698574
    Abstract: When an output from a sensor (11) is decreased below a key-lock release preset value (K), a comparator (19) generates an output so as to reset a flip-flop (21) and to enable an AND gate (22). When the output from the sensor (11) is decreased below a reset preset value (R), a comparator (20) generates an output so as to supply a reset signal to an integrated value holding unit (16) through the AND gate (22) and to reset the flip-flop (21), thus thereafter restarting an integral action by the integrated value holding unit (16).
    Type: Grant
    Filed: October 23, 1985
    Date of Patent: October 6, 1987
    Assignee: Yoshiki Industrial Co., Ltd.
    Inventors: Yasuo Yoshizawa, Masatoshi Jinno
  • Patent number: 4594675
    Abstract: Sampling pulses are obtained by a plurality of sampling through holes which are formed at equal angular intervals in a disc encoder which is fixed to a crankshaft of a piston engine to be measured. An analog output from a pressure sensor for sensing the pressure inside a cylinder is sampled, held by the obtained sampling pulses and converted into a digital signal to provide digital measurement data. The digital measurement data is written into a RAM during a positive period of an internal clock pulse under the control of a direct memory access control circuit and the RAM is accessed by a CPU during a negative period of the internal clock pulse. The digital data read out of the RAM is undergone for the data arithmetic operation by the CPU in the realtime manner.
    Type: Grant
    Filed: August 26, 1983
    Date of Patent: June 10, 1986
    Assignee: Yoshiki Industrial Co., Ltd.
    Inventor: Yasuo Yoshizawa
  • Patent number: 4138445
    Abstract: A flame-retardant fiber is made comprising 20 - 95% by weight of amino resin condensate of an amino compound and formaldehyde in which the amino compound may be a melamine, combined melamine and guanamine, combined melamine and urea, combined melamine, guanamine and urea, and benzoguanamine and/or urea, and in which the chemical bond linking the polymer chain is for the most part methylene linkage and 80 - 5% by weight of polyvinylalcohol, the resulting fiber being cured when necessary and having a tensile strength of at least 1.0 g/d., and having a break elongation of at least 5%.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: February 6, 1979
    Assignee: Toray Industries, Inc.
    Inventors: Tatsuo Nogi, Yasuo Yoshizawa, Kanzi Kashihara, Nobuo Yoshizumi, Yoshizo Tsuda