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:
Apr. 22, 1997
Filed:
Sep. 14, 1995
Norihiro Iwamoto, Sagamihara, JP;
Yutaka Nakamura, Zama, JP;
Toshiba Kikai Kabushiki Kaisha, Tokyo-to, JP;
Abstract
Operation can be switched from low- or high-speed injection process to intensified-pressure injection process by using only one accumulator, and an injection cylinder is composed of a single-acting cylinder, so that the space can be saved, and intensified-pressure surge can be reduced. A coaxial small-diameter portion is formed on the pressure surface side of a piston of the accumulator, a hydraulic oil discharge passage having an inside diameter corresponding to the outside diameter of the small-diameter portion is provided coaxial with the piston, and a passage is provided for guiding intensified-pressure oil in a cylinder chamber of the accumulator.