Patents Assigned to Quantum Systems Corporation
  • Filtering apparatus
    Patent number: 4517088
    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: July 29, 1983
    Date of Patent: May 14, 1985
    Assignee: Quantum Systems Corporation
    Inventor: Wendell R. Miller
  • 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
  • Backwashing-type filtering apparatus
    Patent number: 4422938
    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: January 25, 1982
    Date of Patent: December 27, 1983
    Assignee: Quantum Systems Corporation
    Inventor: Wendell R. Miller