Patents by Inventor Duncan Adam Keller

Duncan Adam Keller 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).

  • Anti-Back-Streaming Carburetor Valve
    Publication number: 20100018582
    Abstract: A valve for sealing a carburetor inlet of a first diameter, includes a valve element having a curved surface for sealing the inlet opening, and a through hole of substantially the first diameter extending through the valve element, and a translation mechanism for rotating the valve element between a first position wherein the curved surface completely seals the opening and a second position wherein the through hole aligns with the inlet allowing a free flow into the carburetor.
    Type: Application
    Filed: January 16, 2009
    Publication date: January 28, 2010
    Applicant: CENTRAL COAST PATENT AGENCY, INC.
    Inventors: Duncan Adam Keller, Arthur Langlie
  • Anti-back-streaming carburetor valve
    Patent number: 7478800
    Abstract: A valve for sealing a carburetor inlet of a first diameter, includes a valve element having a curved surface for sealing the inlet opening, and a through hole of substantially the first diameter extending through the valve element, and a translation mechanism for rotating the valve element between a first position wherein the curved surface completely seals the opening and a second position wherein the through hole aligns with the inlet allowing a free flow into the carburetor.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: January 20, 2009
    Assignee: Central Coast Patent Agency, Inc.
    Inventors: Duncan Adam Keller, Arthur Langlie
  • Motorcycle engine mounting system
    Publication number: 20040007409
    Abstract: A vibration-isolation system for assembly of a motorcycle frame with an engine/transmission unit has a first pivotal mount at a rear portion of the frame and engine/transmission unit, the first mount comprising all rigid bearing components mounted to solid elements of both the frame and the engine/transmission unit, the first mount thereby allowing the engine/transmission unit to rotate around the first mount in substantially a vertical plane of the frame, but allowing no pivotal movement in any other plane or any translation movement in any direction relative to the frame; and a second mount at a front portion of the frame and engine/transmission unit, the second mount incorporating one or more elastomeric elements between a solid interface to the frame and a solid interface to the engine/transmission unit, thereby allowing substantially vertical translation of the engine transmission unit relative to the frame at the second mount, the translation of an amplitude limited by the elastomeric elements, and ther
    Type: Application
    Filed: June 30, 2003
    Publication date: January 15, 2004
    Inventors: Duncan Adam Keller, Gregory Spak
  • Motorcycle engine mounting system
    Patent number: 6588530
    Abstract: A vibration-isolation system for assembly of a motorcycle frame with an engine/transmission unit has a first pivotal mount at a rear portion of the frame and engine/transmission unit, the first mount comprising all rigid bearing components mounted to solid elements of both the frame and the engine/transmission unit, the first mount thereby allowing the engine/transmission unit to rotate around the first mount in substantially a vertical plane of the frame, but allowing no pivotal movement in any other plane or any translation movement in any direction relative to the frame; and a second mount at a front portion of the frame and engine/transmission unit, the second mount incorporating one or more elastomeric elements between a solid interface to the frame and a solid interface to the engine/transmission unit, thereby allowing substantially vertical translation of the engine transmission unit relative to the frame at the second mount, the translation of an amplitude limited by the elastomeric elements, and ther
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: July 8, 2003
    Assignee: A.E. Technologies, Inc.
    Inventors: Duncan Adam Keller, Gregory Spak
  • MOTORCYCLE ENGINE MOUNTING SYSTEM
    Publication number: 20030106733
    Abstract: A vibration-isolation system for assembly of a motorcycle frame with an engine/transmission unit has a first pivotal mount at a rear portion of the frame and engine/transmission unit, the first mount comprising all rigid bearing components mounted to solid elements of both the frame and the engine/transmission unit, the first mount thereby allowing the engine/transmission unit to rotate around the first mount in substantially a vertical plane of the frame, but allowing no pivotal movement in any other plane or any translation movement in any direction relative to the frame; and a second mount at a front portion of the frame and engine/transmission unit, the second mount incorporating one or more elastomeric elements between a solid interface to the frame and a solid interface to the engine/transmission unit, thereby allowing substantially vertical translation of the engine transmission unit relative to the frame at the second mount, the translation of an amplitude limited by the elastomeric elements, and ther
    Type: Application
    Filed: December 7, 2001
    Publication date: June 12, 2003
    Inventors: Duncan Adam Keller, Gregory Spak