Patents by Inventor Takafumi Kato

Takafumi Kato 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: 20060047387
    Abstract: In a suspension control system, accelerations detected by acceleration sensors are differentiated by a differentiator to calculate acceleration derivative values. Based on these values, a target electrical current calculating section calculates a target electrical current that is supplied to an actuator which controls a damping force of a damper. Before a rolling or pitch angle occurs in the vehicle, the change of the rolling or pitch angle is predicted to control the damping force of the damper, thereby improving the response of rolling angle and pitch angle control to achieve, simultaneously, an accurate posture control and a satisfactory riding comfort. Because the target electrical current calculating section corrects the target electrical current of the actuator based on a damper speed obtained by differentiating a damper displacement, even when a large input is applied to the damper due to an unevenness of the road surface, a proper posture control is performed.
    Type: Application
    Filed: August 5, 2005
    Publication date: March 2, 2006
    Inventors: Masaki Izawa, Takafumi Kato, Shigenobu Sekiya, Yoshio Onoe, Tsukasa Fukuzato
  • Publication number: 20050011892
    Abstract: The invention provides a multilayer container that comprises a polyglycolic acid layer and a thermoplastic polyester resin layer and is much improved in terms of gas barrier properties, heat resistance, moldability, transparency and durability, and its production process. Polyglycolic acid is used as a gas barrier resin. At the body and bottom, the thermoplastic polyester resin forms an inner and an outer layer, and an intermediate layer comprising at least one polyglycolic acid layer is embedded in the thermoplastic polyester resin layer. The opening end of the container is formed of a thermoplastic polyester resin layer alone, and the body is biaxially oriented. The multilayer container has heat resistance enough to stand up to hot-filling at 93° C. for 20 seconds.
    Type: Application
    Filed: November 1, 2002
    Publication date: January 20, 2005
    Inventors: Junji Nakajima, Takafumi Kato, Yoshihiro Matsukura
  • Patent number: 5201824
    Abstract: A push button switch including a case, a key top fastened to the case, an elastic member disposed between the case and the key top and acting to upwards urge the key top and a contact portioned so as to confront a spring member fastened to an operation member of the key top so that the contact portion is pressed by the spring member when the key top is depressed, the push button switch comprising: a movable member disposed between the operation member of the key top and a projection wall of the case whereby the operation member and the movable member can be moved with respect to each other and the movable member and the projection wall can be moved with respect to each other.
    Type: Grant
    Filed: January 13, 1992
    Date of Patent: April 13, 1993
    Assignee: Alps Electric Co., Ltd.
    Inventors: Takafumi Kato, Kazutoshi Watanabe
  • Patent number: 5120923
    Abstract: A push button switch including a case, a key top fastened to the case, an elastic member disposed between the case and the key top and acting to upwards urge the key top and a contact portioned so as to confront a spring member fastened to an operation member of the key top so that the contact portion is pressed by the spring member when the key top is depressed, the push button switch comprising: a movable member disposed between the operation member of the key top and a projection wall of the case whereby the operation member and the movable member can be moved with respect to each other and the movable member and the projection wall can be moved with respect to each other.
    Type: Grant
    Filed: September 18, 1990
    Date of Patent: June 9, 1992
    Inventors: Takafumi Kato, Kazutoshi Watanabe
  • Patent number: 5010219
    Abstract: A push button switch used for a personal computer or a word processor, which uses a membrane switch in a contact portion. The push button switch comprises a casing, a key top slidably guided along the casing, a contact portion arranged below the key top, an actuator rotatably supported on the casing to open and close the contact portion, a spring retained in a curved orientation between the actuator and the top key, and a click portion provided on the actuator by which a curved side of the spring is pressed, the clock portion of the actuator actuated by downward movement of the key top urging the side of the spring so as to invert the curved orientation of the spring.
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: April 23, 1991
    Assignee: Alps Electric Co., Ltd.
    Inventor: Takafumi Kato