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:
Sep. 17, 1991
Filed:
Feb. 23, 1990
George A Nelson, Sandy, UT (US);
Other;
Abstract
A laser employing a dispenser cathode is provided with a tubular enclosure surrounding that cathode. The tubular enclosure serves as a support for the bore and the optical chamber on either side of the dispenser cathode and is insulated from ambient temperature conditions by a ballast reservoir housed in a jacket encircling the tubular enclosure. The jacket has peripheral sidewalls spaced apart from the tubular enclosure. Lateral end walls connect the opposite extremities of the peripheral sidewalls in a sealing engagement to the exterior of the tubular enclosure. Communication between the interior of the jacket and the interior of the tubular support is afforded through an aperture formed in the tubular support at a location remote from the dispenser cathode. Leads for the dispenser cathode are disposed in a sealing engagement through the end walls of the jacket and enter the interior of the tubular support through the aperture formed therethrough. By retaining rather than dissipating from the tubular support the heat generated by the dispenser cathode, a predictable and circumferentially uniform amount of longitudinal, temperature-related dimensional changes are induced in the tubular support, preventing cathode housing bending of the support structure between the optical chamber and the bore. This contributes to enhanced mirror alignment stability.