Patents by Inventor Alphonso L. Martinez

Alphonso L. Martinez 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).

  • Backwashing-type filtering apparatus with filter support grid of ring-like segments
    Patent number: 4427547
    Abstract: A filtering apparatus suitable for being cleaned by backwashing includes an outer housing (11) and an inner filter (13) disposed in the outer housing defining an outer annular flow passage (16) and an inner flow passage (17). The outer housing is tapered in relation to the external shape of the filter to provide a substantially uniform liquid velocity through the filter in both forward flow and backflow directions. The filter is made up of a plurality of ring-like segments (38) stacked end to end on which a filter medium (37) is mounted.
    Type: Grant
    Filed: May 6, 1982
    Date of Patent: January 24, 1984
    Assignee: Quantum Systems Corporation
    Inventors: Wendell R. Miller, Alphonso L. Martinez