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:
Sep. 21, 2021
Filed:
Nov. 19, 2019
Tti (Macao Commercial Offshore) Limited, Macau, MO;
Patrick Diana, Davidson, NC (US);
Douglas M. Rukavina, Concord, NC (US);
TECHTRONIC FLOOR CARE TECHNOLOGY LIMITED, Tortola, VG;
Abstract
An extractor is provided. The extractor comprises: a base movable along a surface; a handle configured to be gripped by a user to move the base; a nozzle in fluid communication with a suction motor configured to generate a suction airflow through the nozzle; an encoder operable to generate an encoder signal as a first signal based on user-initiated movement of the base along the surface in a forward direction and as a second signal based on movement in a rearward direction; and a controller operatively connected to the encoder and the suction motor, the controller being configured to change a power to the suction motor to a forward power level based on the first signal during operation of the extractor and to a rearward power level based on the second signal during operation of the extractor, wherein the forward power level is less than the rearward power level.