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. 27, 1995
Filed:
Nov. 12, 1992
Toto Ltd., Fukuoka, JP;
Abstract
A multi-layer disk fan with blades operates quietly. The multi-layer disk fan with blades is formed by laminating a multiplicity of annular disks in a measured spaced relation, the arrangement having such a feature that a multiplicity of blades are interposed between the annular disks and the ends of the respective blades. The blades are further positioned a circumferentially measured spaced apart distance inward of the outer peripheral edges of the annular disks. Turbulent air flow caused by peeling-off at the tips of the blades through the effect of laminar flow by the disks is effectively prevented. Likewise, distortion in outlet speed at the outer peripheral edges of the annular disks is controlled, reducing noises from turbulent flow and interference and resulting in quiet operation.