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:
Jul. 21, 1981
Filed:
Sep. 21, 1979
Applicant:
Inventor:
Robert D Scott, West Covina, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10H / ; H01C / ;
U.S. Cl.
CPC ...
84-114 ; 8441 / ; 84DI / ; 338 69 ; 338114 ; 338 99 ;
Abstract
Faithful replication of a drummer's hits on an electric drum, free of cogeneration of spurious signals by acoustic coupling of the drum pick-up with extraneous energy sources such as nearby musical instruments is achieved by employing as the drum hit pick-up a variable resistance transducer comprising a foamed dielectric matrix, e.g. polymer, having electroconductive particles therein, sandwiched between conductive members one of which is contiguous with the drum head.