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. 01, 1992
Filed:
Jan. 11, 1991
Applicant:
Inventors:
James B VanderKelen, Midland, MI (US);
William C Topham, Midland, MI (US);
Donald R Koenig, Bay City, MI (US);
Joseph M VanderKelen, Midland, MI (US);
Assignee:
Snow Machines Incorporated, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F25C / ;
U.S. Cl.
CPC ...
239-22 ; 239 142 ;
Abstract
An improved ducted-fan type snowmaking machine and method wherein an impeller is driven at a variable speed selected to produce a variable noise level depending on the proximity of the apparatus to an inhabited area. The machine includes air stream straightening vanes for converting a spiraling stream to a linear, laminar flow stream, and a plurality of neucleating nozzles positioned within the confines of the duct.