Patents by Inventor Takanori Nakahara

Takanori Nakahara 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).

  • Constant-rate deflator for sphygmomanometer
    Patent number: 5833620
    Abstract: A constant-rate deflator for constantly reducing air pressure of a cuff-type sphygmomanometer is disclosed. The constant-rate deflator includes a ventilation-adjusting shaft 2 with a truncate-cone recess 2a formed in one of the end thereof and a leak valve 1 with a hole 1b formed in the center thereof, the leak valve having a projection 1c opposing the recess of the ventilation-adjusting shaft and has the same truncated cone shape as the recess, wherein the rate of deflation is kept constant by adjusting the clearance between the projection of the leak valve and the recess of the ventilation-adjusting shaft.
    Type: Grant
    Filed: November 14, 1996
    Date of Patent: November 10, 1998
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Tomomi Murakami, Hidetaka Tsuchiya, Masahiro Kasaya, Takanori Nakahara