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:
Oct. 28, 2014
Filed:
Jun. 07, 2011
Toshihide Sasaki, Hitachinaka, JP;
Shigetoshi Ishida, Hitachinaka, JP;
Hiroki Nagase, Sambu-gun, JP;
Toshihide Sasaki, Hitachinaka, JP;
Shigetoshi Ishida, Hitachinaka, JP;
Hiroki Nagase, Sambu-gun, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
An engine includes: a carburetor configured to supply an air-fuel mixture of fuel and air; a crank case defining a crank chamber; a cylinder block which includes: a cylinder bore in which a reciprocable piston is disposed; and an intake port which supplies the air-fuel mixture supplied from the carburetor to the crank chamber; a control valve configured to open and close the intake port; and a controller configured to control the control valve. The controller controls the number of times that the control valve closes the intake port with respect to the number of times that the piston moves up to thereby reduce pressure of the crank chamber.