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:
Aug. 18, 2015
Filed:
Jul. 03, 2013
Honda Motor Co., Ltd., Tokyo, JP;
Toshihiro Tsutsui, Wako, JP;
Ryota Morinaga, Wako, JP;
HONDA MOTOR CO., LTD, Tokyo, JP;
Abstract
A fuel supply device supplies fuel from a fuel tank to an injector by driving a diaphragm pump by use of pressure variation within a crankcase. The diaphragm pump includes: a pump casing; a diaphragm partitioning the interior of the pump casing into a negative pressure chamber and a pump chamber; and a plunger connected to the diaphragm and reciprocatively movable to and from the pump chamber. A pressure receiving area over which the plunger receives, at its end surface in a plunger advancing/retracting direction, pressure from the pump chamber is set smaller than a pressure receiving area over which the diaphragm receives pressure from the negative pressure chamber in the advancing/retracting direction.