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:
May. 29, 2012
Filed:
Jan. 09, 2008
Peter Tell, Akersberga, SE;
Peter Tell, Akersberga, SE;
Xerex AB, Taby, SE;
Abstract
An ejector device effective to generate a negative pressure by element of compressed air fed to an ejector of the device via a compressed-air duct includes an air suction duct, a pressure sensor and an electrically activatable valve member arranged in the compressed-air duct for regulating the flow of compressed air to the ejector, as well as electrically supplied control electronics () adapted to actuate the valve member in response to the pressure in the air suction duct detected by the sensor. The device includes an accumulator by which the control electronics are supplied with electricity, and a generator, which via a charging air duct (), is in flow communication with the compressed-air duct and is driven by compressed air for generating electrical energy, which is brought into the accumulator for charging the same.