Patents Assigned to M&M Technologies, Inc.
  • Patent number: 8118579
    Abstract: A pump comprises a driving rotor and a driven rotor that are positioned in a housing such that, as the driving rotor and the driven rotor rotate, the teeth of the driving rotor and the teeth of the driven rotor mesh to form a positive displacement seal. The teeth of the driving rotor and the driven rotor are configured such that seals between the inlet side and the discharge side of the pump are formed between only the leading surfaces of the teeth of the driving rotor and the trailing surfaces of the teeth of the driven rotor.
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: February 21, 2012
    Assignee: M&M Technologies, Inc.
    Inventor: James B. Klassen
  • Patent number: 7479000
    Abstract: A pump comprises a driving rotor and a driven rotor that are positioned in a housing such that, as the driving rotor and the driven rotor rotate, the teeth of the driving rotor and the teeth of the driven rotor mesh to form a positive displacement seal. The teeth of the driving rotor and the driven rotor are configured such that seals between the inlet side and the discharge side of the pump are formed between only the leading surfaces of the teeth of the driving rotor and the trailing surfaces of the teeth of the driven rotor.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: January 20, 2009
    Assignee: M&M Technologies, Inc.
    Inventor: James B. Klassen
  • Patent number: 7014436
    Abstract: A pump comprises a driving rotor and a driven rotor that are positioned in a housing such that, as the driving rotor and the driven rotor rotate, the teeth of the driving rotor and the teeth of the driven rotor mesh to form a positive displacement seal. The teeth of the driving rotor and the driven rotor are configured such that seals between the inlet side and the discharge side of the pump are formed between only the leading surfaces of the teeth of the driving rotor and the trailing surfaces of the teeth of the driven rotor.
    Type: Grant
    Filed: June 2, 2003
    Date of Patent: March 21, 2006
    Assignee: M&M Technologies, Inc.
    Inventor: James B. Klassen
  • Patent number: D404099
    Type: Grant
    Filed: February 11, 1997
    Date of Patent: January 12, 1999
    Assignee: M & M Technologies, Inc.
    Inventor: William Pratt Mounfield, Jr.
  • Patent number: D406293
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: March 2, 1999
    Assignee: M&M Technologies, Inc.
    Inventor: William Pratt Mounfield, Jr.