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. 10, 1980
Filed:
Jun. 24, 1977
Applicant:
Inventors:
Keizo Yamamoto, Nara, JP;
Charles C Austin, Huntington Beach, CA (US);
Assignees:
Sharp Kabushiki Kaisha, Osaka, JP;
Hycom Incorporated, Irvine, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307308 ; 307315 ; 3072 / ; 368224 ;
Abstract
A touch sensitive switch arrangement with an I.sup.2 L (Integrated Injection Logic) structure includes a battery power source, a current limiter, an injector, a first-stage and second-stage switching transistors being both supplied with current from the injector, a first touch electrode connected to the positive polarity of the battery power source and a second touch electrode connected to the base of the first-stage switching transistor with electrical isolation from the first touch electrode.