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:
Mar. 12, 1991
Filed:
Oct. 26, 1989
Nobuo Nohtomi, Saitama, JP;
Hideaki Saito, Saitama, JP;
Pioneer Electronic Corporation, Tokyo, JP;
Abstract
A knob device mounted on an operating member such as an on/off switch or volume control of a piece of audio or video equipment has a push button which is pushed from the front side of a panel. The push button has a flange which is received in an escutcheon having an inner flange at its front end. A sheet having small projections on at least one of its inner and outer peripheries is disposed between the inner flange and the flange of the push button, as well as between the push button and the escutcheon, thereby to prevent any play or backlash from occurring. The sheet may be thin and interposed between the flange of the push button and the inner surface of the escutcheon in sliding contact with the flange. The knob device may be made of a light transmitting resin mounted on the operating element. The knob has a flange and a mark on its face formed by a non-light transmitting panel. The panel has a non-light transmitting knob guide formed on its rear to guide the flange. The guide covers at least a peripheral surface of the knob. A light-guiding member guides light rays to the rear face of the knob. A lamp may be provided to direct light rays directly to the knob.