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:
Dec. 18, 2007
Filed:
Jul. 12, 2006
Satoru Araki, Hachimantai, JP;
Satoru Araki, Hachimantai, JP;
ZAMA Japan Co., Ltd., Iwate-Gun, Iwate-Ken, JP;
Abstract
The carburetor prevents an air-fuel mixture from becoming excessively lean and prevents a fuel pressure from becoming unstable, thereby making it possible to stably supply a fuel to an engine, in a diaphragm-type carburetor with a pressure regulator. A diaphragm-type carburetor includes a fuel pump using a pulsation pressure generated in a crank chamber of an engine or an intake pipe as a driving force, and a metering chamber having a diaphragm and a lever mechanism and provided with fuel at a desired constant pressure. The diaphragm-type carburetor includes a bubble discharge path connecting the metering chamber to other predetermined discharge portions and with a check valve in each of an inlet side and an outlet side. A bubble removing pump is connected to the bubble discharge path, withdraws the bubble to the bubble discharge path from the metering chamber in conjunction with a closing or opening operation of a throttle shaft by a driver or operator and discharging the withdrawn bubble to the discharge portion in conjunction with an opening or closing operation of the throttle shaft.