Patents by Inventor Clarence G. Smith, Jr.

Clarence G. Smith, Jr. 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).

  • Air-injection cleaning system for liquid filters
    Patent number: 4219423
    Abstract: A pump and filter assembly suitable for circulating and filtering swimming-pool water is provided with a normally closed air-injection valve to aerate water flowing into a filtration element in the filter. When the exterior surfaces of the element become covered with dirt or filter cake, the air-injection valve and an auxiliary filter outlet are opened. Air aspirated through the valve into the filter inlet water stream causes a churning cleaning action which dislodges the dirt, and the debris-laden water is discharged through the auxiliary outlet without passing through the element.
    Type: Grant
    Filed: September 27, 1978
    Date of Patent: August 26, 1980
    Assignee: Muskin Corporation
    Inventor: Clarence G. Smith, Jr.