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:
Jun. 10, 1980
Filed:
Dec. 01, 1978
Applicant:
Inventors:
Peter Hold, Milford, CT (US);
Zehev Tadmor, Teaneck, NJ (US);
Assignee:
USM Corporation, Farmington, CT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01F / ; B29B / ; B65D / ;
U.S. Cl.
CPC ...
366 97 ; 366307 ; 277 53 ; 277135 ; 425224 ; 425466 ; 4253812 ;
Abstract
Sealing means for controlling leakage of material between closely spaced apart, relatively moving coaxial annular surfaces. Essentially, leakage is controlled by providing a pumping channel on one of the surfaces and a leakage liquid retaining channel on the other surface. The pumping and leakage liquid retaining channels are cooperatively arranged to resist flow of leakage liquid between the surfaces. The sealing means are particularly adaptable for controlling leakage from processing passages of rotary processing apparatus.