The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 1998
Filed:
Jul. 14, 1997
Robert Burrahm, Placentia, CA (US);
IMPCO Technologies, Inc., Seattle, WA (US);
Abstract
A fuel control unit which is formed in a housing such as a load block or carburetor has a passageway with a fuel inlet at one end thereof and a fuel outlet at the other end thereof. A pair of adjusting valves, one for adjusting the amount of fuel flow from a first fuel source such as natural gas and the other for adjusting the amount of fuel flow from a second fuel source such as propane are mounted in the passageway. The valves are positioned to set the sizes of metered passages and are preadjusted to provide the desired fuel flow to provide a proper air to fuel ratio for the fuel from each source. The passageway is alternatively set for proper operation with one or the other fuel sources either by manually positioning a shuttle valve or actuating a solenoid which drives the shuttle valve.