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:
Feb. 03, 1981
Filed:
Aug. 14, 1978
Yngve Lindstrom, Turku, FI;
Valmet Oy, , FI;
Abstract
Nozzle apparatus for airborne paper web dryers of the non-impingement or underpressure type including a blow box member defined by top web supporting and bottom wall portions and back and front wall portions. The front and top supporting wall portions are interconnected by a curved guide surface and an upwardly directed nozzle is provided on the front wall portion spaced below the entry edge plane of the guide surface. The relative values of the width of the nozzle gap and the radius of curvature of the curved guide surface are such that the gas flow exiting from the nozzle follows a portion of the guide surface and departs therefrom prior to the exit edge plane of the guide surface. The upper surface of the top supporting wall of the blow box defines a small angle with the running plane of the web.