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. 15, 1997
Filed:
Feb. 06, 1995
Manabu Kamiya, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A digital multimeter is provided with a highly reliable seal at a connection interface between an upper and lower enclosure forming an enclosure. The multimeter also has a highly reliable seal at peripheral boundaries of operating elements disposed on a surface of the enclosure thereby providing a highly-reliable, water-proof and dust-proof mechanism at a low cost. A packing serves as an elastic sealing material and is disposed at the connection interface between the upper enclosure and the lower enclosure. The packing is pressed and crushed in a slant direction relative to the direction of the thickness of the enclosure thereby providing a sealing mechanism at the connection interface. The periphery of a rubber key serving as an operating element is sealed by a double sealing mechanism comprising an uneven face formed on a peripheral side and an even face formed on the upper enclosure. The periphery of a rotary switch is sealed by a sealing mechanism including an O-ring pressed in a direction perpendicular to the thickness of the enclosure. Thus, the invention provides a simple sealing mechanism for a digital multimeter which provides excellent protection from water and dust.