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:
Jun. 08, 2004
Filed:
Feb. 11, 2002
Steven G. Goldstein, Marina Del Ray, CA (US);
Mark R. Barton, Los Angeles, CA (US);
Other;
Abstract
A transparent container has two immiscible liquids of different densities, colors and viscosities. A pump with a magnetic coupling injects the denser liquid upwardly into the less dense liquid in response to changes in sound volume or frequency of the vicinity of the device providing a geyser display reactive to music or voice. Pump control circuitry includes a microphone, an amplifier; a filter for extracting a beat from dance music or syllabic content of speech; an amplitude detector for detecting a short-time amplitude envelope; a long time averager providing a reference signal proportional to the average sound level and an attenuator; a comparator connected to both the averager and the attenuator to change state when the attenuated version of the short time amplitude envelope momentarily rises above reference signal to provide an activating signal to a pump power controller causing electric power to be delivered to the pump.