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:
Oct. 23, 1984
Filed:
Nov. 08, 1982
Applicant:
Inventor:
Stanley E Thompson, Healdsburg, CA (US);
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03D / ;
U.S. Cl.
CPC ...
415174 ; 415197 ; 2915 / ;
Abstract
A method and apparatus for adjusting the amount of clearance between the tips of the blades of a large axial flow fan and the inner surfaces of the fan cylinder wall. A plurality of foam spacer panels are secured to the inner surfaces of the fan cylinder walls. A cutting means is attached to the outer end of the longest fan blade and extends a short distance outwardly therefrom. Rotation of the fan causes the cutting means to trim the spacer panels to achieve the required clearance. A plurality of plastic sheets are secured to the spacer panels in covering relationship thereto.