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. 15, 1987
Filed:
Apr. 02, 1987
Domenico Angelillo, Sesto San Giovanni, IT;
Industrie Magneti Marelli S.r.l., Milan, IT;
Abstract
The valve comprises a body with an inlet connector and an outlet connector for connection to a pressure source and a pneumatic circuit respectively, and with an obturator valve which controls communication between the connectors. The valve has a control device including a piston sealingly slidable in a guide portion of the body between a first chamber which can be put into communication with a pressure source and a second chamber housing a valve so that the piston can move and open the valve under the effect of the pressure in the first chamber. The guided portion of the piston is generally cylindrical and has a smaller cross-section than the passage cross-section of the guide portion of the body. An intermediate member is sealingly interposed between the guided portion of the piston and the guide portion of the body. The intermediate member has stop means and is locatable between the wall of the body and the guided portion of the piston in the first or second orientations, in which the stop means respectively allow and prevent the movement with the piston under the effect of the pressure in the chamber.