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:
Feb. 15, 1983
Filed:
Aug. 07, 1980
Henry C Billingsley, Waukegan, IL (US);
Chester G DuBois, Zion, IL (US);
Outboard Marine Corporation, Waukegan, IL (US);
Abstract
Disclosed herein is a fuel supply system for an internal combustion engine including a combustion chamber and an ignition switch operable between 'off' and 'on' and 'start' positions, which fuel supply system comprises a carburetor communicating with the combustion chamber, a primer fuel inlet communicating with the combustion chamber, a manually operable fuel pump connected in series with a power operated fuel pump and communicating with a source of fuel and with the carburetor, a housing defining a chamber, a movable wall located in and supported by the housing and dividing the chamber into a first sub-chamber communicating with the fuel pumps and a second sub-chamber, a spring biasing the movable wall to increase the volume of the second sub-chamber and to decrease the volume of the first sub-chamber, and a valve having an inlet communicating with the fuel pumps, an outlet communicating with the second sub-chamber and with the primer fuel inlet, and a valve member located between the inlet and the outlet, movable between open and closed positions, biased toward the closed position, and moveable to the open position in response to movement of the ignition switch to the 'start' position.