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. 30, 1992
Filed:
Dec. 19, 1990
Thomas M Golz, Willoughby Hills, OH (US);
General Electric Company, Schenectady, NY (US);
Abstract
For mounting a lamp that comprises a glass envelope including a seal and a glass exhaust tube having a tip projecting from the seal, there is provided a base having a cavity for receiving the seal and the exhaust-tube tip. Within the cavity about the seal and the tip is a hard cement for fixedly positioning the envelope within the cavity. Surrounding the tip and located between the tip and the adjacent cement is a thin layer of soft material that can yield in response to forces developed thereon by thermal expansion and contraction of the cement, thereby protecting the tip from being cracked by these forces. The hard cement extends into contact with the glass seal about a substantial portion of the seal's exterior surface so that the hard cement is able to fixedly position the envelope relative to the base without interference from the softer material about the tip.