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. 13, 1978
Filed:
Apr. 25, 1977
Naoyuki Takahashi, Hino, JA;
Olympus Optical Co., Ltd., Tokyo, JA;
Abstract
A controller comprises a first and a second pushbutton each carrying a pair of actuator pins of different lengths, first and second normally open switches located below each of the actuator pins having a reduced length, and a first and a second normally closed switch located below each of the other actuator pins. When depressed, each pushbutton causes its pin of an increased length to actuate its associated switch initially and then causes the other pin to actuate its associated switch. When the first pushbutton is depressed, a first circuit including the first normally open switch and the second normally closed switch in series is completed, and when the second pushbutton is depressed, a second circuit including the first normally closed switch and the second normally open switch in series is completed. When neither pushbutton is depressed, the first and second normally open switches prevent either the first or the second circuit from being completed. When the both pushbuttons are depressed simultaneously, the first and second normally closed switches are opened, thus preventing the completion of both the first and the second circuits.