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:
Jan. 04, 1994
Filed:
May. 31, 1991
Applicant:
Inventor:
Calvin A Gongwer, Glendora, CA (US);
Assignee:
Innerspace Corporation, Covina, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B63H / ;
U.S. Cl.
CPC ...
416228 ; 298896 ; 298897 ; 2988971 ; 416230 ; 4162 / ; 4162 / ;
Abstract
A blade and method for fabrication of a blade for use on a hub for rotation in a fluid that enjoys the benefits of a skewed blade without the disadvantages. This is accomplished through the use of alternating clockwise skewed and counterclockwise skewed sections formed along the leading edge. In bidirectional applications the alternating clockwise and counterclockwise skewed sections are formed along both edges.