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:
Dec. 28, 1982
Filed:
Oct. 02, 1980
David J Riley, Chester, GB;
Gerald McGreavy, Bolton, GB;
Chloride Silent Power Limited, London, GB;
Abstract
For filling sodium into the sodium reservoir of a sodium-sulphur cell, the reservoir is closed except for an open-ended metal filling tube. In a filling machine, the cell is heated to a temperature such that the sodium will remain liquid, the tube is temporarily sealed around a sodium outlet of the filling machine by an inflatable seal, the reservoir is evacuated of air, flushed with an inert gas and then evacuated for vacuum filling with a metered quantity of sodium through a sodium feed tube within said outlet and extending downwardly into the filling tube. The sodium is pressurized using an inert gas to force the sodium into the cell, the gas is evacuated and the filling tube on the cell sealed by pinching and welding.