Patents by Inventor David P. Sleeper

David P. Sleeper 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).

  • Sound reducing enclosing
    Patent number: 3960237
    Abstract: A sound reducing enclosure for a vibratory feeder includes a cylindrical base assembly which may be in one piece, or alternatively in two halves for ease of installation and maintenance of the equipment within the enclosure. The cylindrical base assembly rests upon a base plate comprising two flat half circles of 1/4 inch aluminum with the space between at right angles to the split between the cylinder halves and bounding a square hole for mounting clearance of vibratory feeder bowl equipment. A transparent generally hemispherical dome assembly of 1/4 inch plexiglass is hingedly secured to the top of the cylinder base assembly for trapping sound within the enclosure while allowing observation of the machine operations.
    Type: Grant
    Filed: March 10, 1975
    Date of Patent: June 1, 1976
    Assignee: Ecology Controls, Inc.
    Inventor: David P. Sleeper