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. 15, 2014
Filed:
May. 28, 2010
Detlef Schulz, Altenriet, DE;
Thomas Strehler, Bad Neustadt, DE;
Rudolf Hermann, Sülzfeld, DE;
Roland Illig, Heustreu, DE;
Peter Lehmann, Meiningen, DE;
Silvio Hamm, Sülzfeld, DE;
Detlef Schulz, Altenriet, DE;
Thomas Strehler, Bad Neustadt, DE;
Rudolf Hermann, Sülzfeld, DE;
Roland Illig, Heustreu, DE;
Peter Lehmann, Meiningen, DE;
Silvio Hamm, Sülzfeld, DE;
Other;
Abstract
The invention relates to an air volume flow and pushing force control device for a vacuum cleaner that has at least a motor, a dust receptacle and a suction nozzle, comprising a controller for controlling the motor power, a first sensor for detecting the air volume flow, which in conjunction with the controller forms a first control loop in order to maintain the air volume flow at a prescribed air volume flow value on the basis of the signal of the first sensor. The control device further comprises a second sensor for detecting a pushing force that is required for pushing the suction nozzle, and in conjunction with the controller, forms a second control loop in order to maintain the pushing force below a prescribed value on the basis of the signal of the second sensor, and a control loop selection device that activates one of the two control loops as a function of the signals of the two sensors.