Patents Assigned to Ralph Dalton
  • Device for removing stains
    Patent number: 6003505
    Abstract: A cleaning tool for cleaning vinyl or acrylic type items, such as swimming pools or hot tubs. An aggregate and a binder are mixed together to provide an improved cleaning device. The binder and the aggregates are matched so as to wear at substantially identical rates.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: December 21, 1999
    Assignee: Ralph Dalton
    Inventors: Ralph Dalton, Roy J. Walters
  • Device for removing stains from swimming pool walls and concrete
    Patent number: 5908350
    Abstract: A cleaning tool for cleaning the walls of a swimming pool or other concrete structures. Two different sized aggregate or abrasives are combined with a binder to provide an improved cleaning device. The binder and the aggregates are matched so as to wear at substantially identical rates.
    Type: Grant
    Filed: May 21, 1997
    Date of Patent: June 1, 1999
    Assignee: Ralph Dalton
    Inventor: Roy J. Walters