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. 27, 1977
Filed:
Nov. 10, 1975
Applicant:
Inventor:
Harold K Haavik, South Norwalk, CT (US);
Assignee:
The Nash Engineering Company, Norwalk, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04C / ;
U.S. Cl.
CPC ...
417 68 ; 210222 ;
Abstract
Liquid ring compressors and pumps using a ferrofluidic ring liquid are disclosed there being electrical coil means disposed around the compressor or pump casing to induce a field in the ferrofluidic ring liquid causing that liquid to form a rotating ring within the casing to drive the rotor.