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:
Dec. 25, 1990
Filed:
Oct. 16, 1989
Robert S Catan, Greenlawn, NY (US);
Dynaforce Corporation, Old Bethpage, NY (US);
Abstract
An air diffuser is provided, preferably for an air curtain generator, which consists of a frame within which are located a plurality of louvres. The louvres are striated and rotatably adjustable about respective axes of rotation. To provide for this rotatable adjustment the louvres are mounted on splined shafts which are received in splined receptacles. The splined receptacles are made in nesting sections which are releasably connected together to provide for the loosening of the shafts and adjustable rotation of the shafts and adjustable rotation of the same to positions whereat the shafts and thereby the louvres are locked in position. Some of the shafts are in parallel with the others. Some of the shafts are further mounted in axial extension of other of the shafts. The shafts of louvres which are in axial extension of one another are in nesting relationship and for this purpose are provided with polygonal cross-sections which prevent rotation of a relative nature therebetween.