Patents by Inventor Leonard Paquette

Leonard Paquette 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).

  • Vacuum receiver with positive dump valve control
    Patent number: 7104743
    Abstract: A vacuum receiver for a pneumatic conveyor for conveying, e.g., plastic pellets, having a receiving vessel with a material inlet, a material outlet and a conveying gas outlet. A first valve member is provided for opening and closing the conveying gas outlet, and a second valve member is provided for opening and closing the material outlet. Both valve members are connected to a common valve shaft and actuated by a single actuator mounted on a vessel lid. The vacuum receiver of the invention has the advantage of affording positive control and sealing of the material discharge valve while at the same time being economical to manufacture and easily cleaned.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: September 12, 2006
    Assignee: Universal Dynamics, Inc.
    Inventors: Donald D. Rainville, Robert R. Crawford, Leonard Paquette, William Goldfarb
  • Vacuum receiver with positive dump valve control
    Publication number: 20050019108
    Abstract: A vacuum receiver for a pneumatic conveyor for conveying, e.g., plastic pellets, having a receiving vessel with a material inlet, a material outlet and a conveying gas outlet. A first valve member is provided for opening and closing the conveying gas outlet, and a second valve member is provided for opening and closing the material outlet. Both valve members are connected to a common valve shaft and actuated by a single actuator mounted on a vessel lid. The vacuum receiver of the invention has the advantage of affording positive control and sealing of the material discharge valve while at the same time being economical to manufacture and easily cleaned.
    Type: Application
    Filed: June 22, 2004
    Publication date: January 27, 2005
    Applicant: Universal Dynamics, Inc.
    Inventors: Donald Rainville, Robert Crawford, Leonard Paquette, William Goldfarb