Patents by Inventor Paul J. Meissner

Paul J. Meissner 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).

  • Filter cartridge for swimming pools and spas
    Patent number: 4921600
    Abstract: A filter cartridge is disclosed having a pleated filter element, hollow perforated core, a lower annular end cap sealed to the bottom ends of the core and filter element and an upper circular end cap sealed to the top ends of the filter element and core. A hollow threaded nipple open at both ends extends coaxially downwardly from the annular end cap, the hollow interior of the nipple being continuous with the hollow interior of the core. A handle extends upwardly from the circular end cap.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: May 1, 1990
    Assignee: Meissner Mfg. Co., Inc.
    Inventor: Paul J. Meissner
  • Fluid filter cartridge and method of its construction
    Patent number: 4507200
    Abstract: An insert for placement between concentric cylindrical filter elements comprises in a one-piece construction a tubular cylindrical body and pairs of parallel slits in the body each forming therebetween a strip of material connected to the remainder of the body at the ends of the strip. The strips are bowed inwardly away from the remainder of the body between their ends to form protrusions extending transversely from the remainder of the body.
    Type: Grant
    Filed: January 9, 1984
    Date of Patent: March 26, 1985
    Assignee: Meissner Manufacturing Company, Inc.
    Inventor: Paul J. Meissner
  • Spacing insert for concentric filter elements
    Patent number: 4487227
    Abstract: An insert for placement between concentric cylindrical filter elements comprises in a one-piece construction a tubular cylindrical body and pairs of parallel slits in the body each forming therebetween a strip of material connected to the remainder of the body at the ends of the strip. The strips are bowed inwardly away from the remainder of the body between their ends to form protrusions extending transversely from the remainder of the body.
    Type: Grant
    Filed: March 19, 1984
    Date of Patent: December 11, 1984
    Assignee: Meissner Manufacturing Company
    Inventor: Paul J. Meissner
  • Fluid filter cartridge and method of its construction
    Patent number: 4317727
    Abstract: An insert for placement between concentric cylindrical filter elements comprises in a one-piece construction a tubular cylindrical body and pairs of parallel slits in the body each forming therebetween a strip of material connected to the remainder of the body at the ends of the strip. The strips are bowed inwardly away from the remainder of the body between their ends to form protrusions extending transversely from the remainder of the body.
    Type: Grant
    Filed: June 18, 1980
    Date of Patent: March 2, 1982
    Assignee: Meissner Manufacturing Company, Inc.
    Inventor: Paul J. Meissner
  • Cover plate for a filter cartridge
    Patent number: D294167
    Type: Grant
    Filed: June 14, 1985
    Date of Patent: February 9, 1988
    Assignee: Meissner Manufacturing Company
    Inventor: Paul J. Meissner
  • Cover plate for a filter cartridge for a spa or swimming pool water filter
    Patent number: D306199
    Type: Grant
    Filed: February 25, 1987
    Date of Patent: February 20, 1990
    Assignee: Meissner Mfg. Co., Inc.
    Inventor: Paul J. Meissner
  • Filter cartridge for swimming pools and spas
    Patent number: RE35900
    Abstract: A filter cartridge is disclosed having a pleated filter element, hollow perforated core, a lower annular end cap sealed to the bottom ends of the core and filter element and an upper circular end cap sealed to the top ends of the filter element and core. A hollow threaded nipple open at both ends extends coaxially downwardly from the annular end cap, the hollow interior of the nipple being continuous with the hollow interior of the core. A handle extends upwardly from the circular end cap.
    Type: Grant
    Filed: April 14, 1992
    Date of Patent: September 22, 1998
    Assignee: Meissner Manufacturing Co., Inc.
    Inventor: Paul J. Meissner