Patents by Inventor Henry Ryder

Henry Ryder 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).

  • Hydraulic elevator muffler
    Patent number: 5101930
    Abstract: A muffler for attenuating pulsations within the hydraulic fluid of an hydraulic elevator includes a plurality of compressible elements for absorbing pressure pulsations within the fluid and a baffle for ensuring that the flow of fluid contacts the elements sufficiently to absorb such pulsations, the baffle allowing a certain amount of flow to pass therethrough so that the pressure drop around the baffle is not so extreme so as to cause the muffler to cease to function.
    Type: Grant
    Filed: August 28, 1990
    Date of Patent: April 7, 1992
    Assignee: Otis Elevator Company
    Inventors: Richard N. Fargo, Sib S. Ray, Louis Bialy, Henry Ryder