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:
Mar. 19, 1996
Filed:
May. 19, 1994
Jae-Man Joo, Seoul, KR;
Yong-Woo Kim, Suwon, KR;
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
A noise control apparatus for a vacuum cleaner, having a simple construction and capable of easy installation in the vacuum cleaner which effectively attenuates noise in a wide frequency band. The noise control apparatus includes a control unit, a noise detecting unit for detecting a noise generated from a noise source, generating a noise level signal on the basis of the noise detection, and sending the noise level signal to the control unit, a control sound generating unit for generating a control sound adapted to attenuate the noise from the noise source under a control of the control unit, and an error sound detecting unit for detecting an error sound resulting from the noise attenuation by the control sound from the control sound generating unit, generating an error sound signal on the basis of the error sound detection, and sending the error sound signal to the control unit. A low pass filter is coupled to each of the noise detecting units, the error sound detecting unit and the control sound generating unit. By the provision of such a low pass filter, it is possible to greatly attenuate noise having a frequency of 500 Hz or below.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile