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:
Apr. 06, 1982
Filed:
Jan. 25, 1980
Applicant:
Inventor:
Harold K Haavik, South Norwalk, CT (US);
Assignee:
The Nash Engineering Company, Norwalk, CT (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04C / ;
U.S. Cl.
CPC ...
417 68 ; 417244 ;
Abstract
Discharge or unloading orifices are provided in both stages of the two stage pump to bleed seal liquid under various vacuum conditions and to render the pump immune to the effects of variation in rotor speed and in the delivery rate of seal liquid.