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:
Apr. 08, 1997
Filed:
Jan. 18, 1996
Manabu Kamiya, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A multimeter is provided having an erroneous input prevention mechanism that allows more than one mode to be assigned to an input terminal hole located in a central section of a shutter board based on movement of a rotary switch. When the rotary switch is rotated, the first and the second drive-side protrusions formed at separate locations from the selector push away the first or second slave-side protrusions in the slave shell to rotate the shutter board about the center at the negative common terminal hole. Thus, only a specific terminal hole is in the open state. Even when the rotary switch is rotated to a predetermined position, the shutter board does not rotate to leaving the first input terminal hole in the open state.