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. 25, 2010
Filed:
Dec. 17, 2004
Pascal Adam, Ayguesvives, FR;
Phillippe Pichon, Villenueve de Riviere, FR;
Pascal Adam, Ayguesvives, FR;
Phillippe Pichon, Villenueve de Riviere, FR;
Abstract
The invention relates to a method for controlling an automatic device for cleaning a surface immersed in liquid which comprises electric motors for driving a chassis along a cleanable surface. The inventive method consists in periodically measuring at least one electrical quantity which makes it possible to obtain the representative value of the resisting torque of at least one driving electric motor (), in comparing each obtained value with the predetermined threshold representative value of a maximum acceptable value and, when said value is greater than said threshold value for the driving electric motor (), a procedure known as a protection procedure is started. Said procedure consists in inverting the control of at least said driving electric motor () in such a way that the device is displaced in a direction opposite to the initial displacement direction and in controlling the device displacements in such a way that it follows the path enabling said device to deviate from the initial path which it followed when said threshold value was exceeded.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile