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:
May. 28, 1985
Filed:
Jun. 24, 1983
Applicant:
Inventor:
F John Herrington, Holcomb, NY (US);
Assignee:
Mobil Oil Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
F26B / ;
U.S. Cl.
CPC ...
34104 ; 34 20 ; 34107 ; 34105 ; 264569 ;
Abstract
Disclosed is an air plenum for surrounding and cooling a tubular extruded film. The plenum has an annular air flow chamber defined in part by an apertured annular distribution plate to which is mounted an annular channel-like one-piece molded housing forming a main flow chamber and having a cross-sectional area which progressively decreases from an air inlet in said housing to a point farthest removed therefrom. The annular air flow chamber receives air from the main air flow chamber through the apertures of the distribution plate and redirects it to an annular outlet nozzle.