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:
Oct. 26, 1993
Filed:
Jul. 17, 1991
Masakatsu Fujiwara, Kasai, JP;
Yasuyuki Tsuchida, Hyogo, JP;
Yuji Nakanishi, Kasai, JP;
Yoshikazu Morishita, Hyogo, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
An electric vacuum cleaner comprises a main body having an electric blower and a dust collecting chamber, a triac controlling the electric blower, a floor nozzle coupled to the main body, a pressure sensor sensing the pressure in the vicinity of a suction port of the electric blower, a current sensor sensing the current in a rotary brush driving motor of the floor nozzle, and a microcomputer. The microcomputer performs a fuzzy inference on the outputs of the pressure sensor and the current sensor to determine the duty cycle of the blower control triac on the basis of the result of the inference. By doing this, supply of power to the electric blower in accordance with the condition of a floor surface is realized.