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:
Feb. 07, 1989
Filed:
Dec. 28, 1987
John M Anderson, Scotia, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
An envelope, containing a torus-shaped arc of a high-intensity-discharge electrodeless arc lamp has a shape, in a vertical plane, with a sidewall formed of a truncated conical portion, with apex located in a downward position with respect to the cone portion utilized. The upper and lower enclosing surfaces are of convex form and are smoothly joined to the truncated conical side wall of the envelope. In one presently preferred embodiment, the sidewall has a dual truncated conical form, with each truncated cone section having an apex located outside of the arc envelope and with the larger diameter section ends joined together, to allow the lamp to operate either with a base-down or a base-up disposition.