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:
Jul. 29, 2014
Filed:
Jun. 02, 2009
Laurent Marc Philippe, Gresin, FR;
Nigel James Gibbins, Pevensey, GB;
Michael Roger Czerniak, Wellington, GB;
Michael Mooney, Brighton, GB;
Laurent Marc Philippe, Gresin, FR;
Nigel James Gibbins, Pevensey, GB;
Michael Roger Czerniak, Wellington, GB;
Michael Mooney, Brighton, GB;
Edwards Limited, West Sussex, GB;
Abstract
The present invention relates to a vacuum pumping system () which comprises: a vacuum pumping mechanism () and a motor () for driving the vacuum pumping mechanism. Means () are provided for determining a cumulative load on the vacuum pumping system over time by monitoring a characteristic of the motor over that time. Means () are also provided for activating a maintenance activity on the system when the cumulative load exceeds a predetermined amount.