Patents by Inventor Tsuyoshi Tatsumura

Tsuyoshi Tatsumura 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: 6869225
    Abstract: A center bearing support having an increased shock absorbing capability by a stopper required when the vibrating displacement of a supported shaft is increased, including an inner ring installed on the inner periphery surface of an outer ring fixed to a body side through an elastic body made of elastomer material and a center bearing installed on the inner peripheral surface of the inner ring, wherein a stopper extending convergently is formed at the end part of the flexible main body of the elastic body, and a rib is formed between the stopper and the end part of the flexible main body at a specified phase interval, whereby, because a deformation force given by the contact of the stopper with the outer ring when an excessive displacement is input is absorbed by the displacement of the end part of the flexible main body, an abrupt rise of a spring constant can be suppressed.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: March 22, 2005
    Assignee: NOK-Vibracoustic Co., LTD
    Inventor: Tsuyoshi Tatsumura
  • Publication number: 20030002760
    Abstract: To improve a shock-absorbing property of a center bearing support (1) by a stopper (132) at a time when a vibration displacement of a supported shaft is increased, in the center bearing support (1) with an inner ring (12) being provided in the inner periphery of an outer ring (11) fixed to the side of a vehicle body via an elastic body (13) made of an elastomer material, and a center bearing (3) being mounted to the inner periphery of the inner ring (12), a stopper (132) extending in a taper shape is formed at an end portion (131a) of a flexible main body (131) in the elastic body (13), and a rib (133) is formed between the stopper (132) and the end portion (131a) of the flexible main body (131) at a predetermined phase interval, so that a deforming force applied by the stopper (132) being in contact with the side of the outer ring (11) at a time when an excessive displacement is input is absorbed by a displacement of the end portion (131a) of the flexible main body (131) , whereby it is possible to restrict
    Type: Application
    Filed: July 8, 2002
    Publication date: January 2, 2003
    Inventor: Tsuyoshi Tatsumura