Patents by Inventor William M. Churchill

William M. Churchill 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: 4653618
    Abstract: A double-cylinder shock absorber, which is particularly suitable for use in a MacPherson strut, includes an inner cylinder having a closed lower end and which is filled with oil. A piston rod extends into the inner cylinder through the upper end thereof. A piston is secured to the lower end of the piston rod and divides the cylinder into upper and lower oil chambers. The piston is provided with a fluid metering device providing a damping force mechanism. A rod guide head closes the upper end of the inner cylinder and is provided with an opening which is slightly spaced from the piston rod to form an annular clearance therebetween. An outer cylinder is coaxially disposed around the inner cylinder and forms therewith an annular reservoir chamber having closed upper and lower ends. The lower portion of the reservoir chamber is filled with oil and the upper portion is filled with gas.
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: March 31, 1987
    Assignee: International Telephone and Telegraph Corporation
    Inventors: William M. Churchill, Anil G. Walambe
  • Patent number: 4086475
    Abstract: A severable ticket-type entry item for admission to an event attended by a plurality of people has a magnetic code indication. A detector detects the magnetic code indication of the entry item and produces an input electrical signal varying in accordance with the magnetic code indication. An identifying device has a variable predetermined code electric signal recorded therein. The identifying device is electrically connected to the detecting device and compares the input and code signals and produces an acceptance signal when the signals are the same and a rejection signal when the signals are different. A severing device electrically connected to the identifying device severs the entry item to provide a stub part for the holder thereof and a record part for recorded entry data on the entry item when the identifying device produces an acceptance signal.
    Type: Grant
    Filed: August 31, 1976
    Date of Patent: April 25, 1978
    Inventor: William M. Churchill