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. 09, 1999
Filed:
Aug. 04, 1997
Lalit M Chordia, Pittsburgh, PA (US);
Other;
Abstract
The mixing apparatus comprises a pressure vessel having a chamber and a first opening that communicates with the chamber. The mixing apparatus also comprises a first cap which fits over the first opening to engage the vessel and close the first opening. Additionally, the mixing apparatus comprises a stirrer having a shaft. The shaft extends through the first cap into the chamber. There is a motor connected to the shaft to turn the shaft. The motor is disposed adjacent to the vessel and external to the chamber. Moreover, there is a first self-sealing spring-loaded seal disposed between and preferably in contact with the first cap and the vessel to seal the first cap with the vessel as pressure increases in the vessel. The mixing apparatus comprises a shaft self-sealing spring-loaded seal which seals the shaft to the first cap as pressure increases in the vessel. The shaft is rotatable in the shaft self-sealing spring-loaded seal.