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:
Feb. 15, 2011
Filed:
Jun. 20, 2005
Applicants:
Mats Stellnert, Farsta, SE;
Martin Sjölund, Grödinge, SE;
Inventors:
Mats Stellnert, Farsta, SE;
Martin Sjölund, Grödinge, SE;
Assignee:
Delaval Holding AB, Tumba, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01J 5/007 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a vacuum source for providing vacuum to at least a first vacuum drain through conduits, comprising at least a first and a second vacuum pump. The vacuum source comprises a control system adapted to detect the consumed airflow, and to control the operation of each of the first and second vacuum pump based on the detected airflow.