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:
Nov. 24, 2015
Filed:
Jan. 11, 2011
Luca Palmieri, Zola Predosa, IT;
Luca Palmieri, Zola Predosa, IT;
FAAC S.P.A., Zola Predosa (BO), IT;
Abstract
An oil-hydraulic system for moving a gate, comprises a double-acting oil-hydraulic cylinder (), which is intended to be kinematically connected to the gate to move it, and an electro-hydraulic pump () to feed and actuate the cylinder upon command. A switching valve () interconnects the cylinder () alternatively with the pump () or with a tank () of oil-hydraulic fluid. In rest conditions, the valve () connects the cylinder () to the tank (), to allow free manual movement of a gate connected to the cylinder, and it is automatically controlled by the pressure variations in the system that are produced by the actuation of the pump () to disconnect the cylinder () from the tank () and connect it to the pump ().