Patents Assigned to Amalgamated Performance Enhancements, L.L.C.
  • Apparatus for adjusting an operational point of an engine
    Patent number: 7152557
    Abstract: An exhaust valve assembly may include a diaphragm connected to a restricting member. The diaphragm may be configured to change a position of the restricting member based on a pressure on a first side of the diaphragm. A spring may abut a second side of the diaphragm opposite the first side. The spring may apply a force to the second side of the diaphragm. An adjustable portion adjacent the spring may be configured to change the force applied to the diaphragm by the spring.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: December 26, 2006
    Assignee: Amalgamated Performance Enhancements, L.L.C.
    Inventor: Lawrence B. Forbush