James B Crocker
Architects at Mac Arthur Blvd, Oakland, CA
License number
Colorado 301797
Issued Date
Feb 16, 1979
Renew Date
Oct 3, 1981
Expiration Date
Oct 3, 1981
Type
Architect
Address
Address
1505 Macarthur Blvd, Oakland, CA 94602
Professional information
Volume Control Device
US Patent:
7947892, May 24, 2011
Filed:
May 5, 2009
Appl. No.:
12/435929
Inventors:
James Roy Crocker - Oakland CA, US
International Classification:
G10H 1/46
US Classification:
84633
Abstract:
The volume control device temporarily alters the loudness of an electric musical instrument by allowing all (or part) of the audio signal to leak through a photosensitive resistor to ground. A light source is positioned so as to affect the value of the photosensitive resistor. The user indirectly controls the audio level by manipulating the light source in various ways: a control switch turns the light on and off; a selector switch determines whether the light source is normally off and turned on by the control switch, or vice versa; the brightness of the light source is adjusted by a variable resistor; and the time taken for the light to reach maximum brightness is controlled by an RC circuit. The device is removable and compatible with any electric instrument.