Airplane propeller blade with slotted flap
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Description
FIG. 1 is a rear perspective view of an airplane propeller blade with slotted flap showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a left side elevational view thereof; and,
FIG. 5 is a airplane propeller of four propeller blades with a slotted flap .
Referenced Cited
U.S. Patent Documents
D172121 | May 1954 | Apostolescu |
D200986 | April 1965 | Wojciechowski |
D252390 | July 17, 1979 | Voisard |
1905891 | April 1933 | Blanchard |
3461966 | August 1969 | Biermann |
Patent History
Patent number: D344487
Type: Grant
Filed: Jul 7, 1992
Date of Patent: Feb 22, 1994
Assignee: The Ishida Foundation (Nagoya)
Inventor: Futoshi Iwamoto (Nagoya)
Primary Examiner: Kay H. Chin
Law Firm: Sughrue, Mion, Zinn, Macpeak & Seas
Application Number: 7/909,440
Type: Grant
Filed: Jul 7, 1992
Date of Patent: Feb 22, 1994
Assignee: The Ishida Foundation (Nagoya)
Inventor: Futoshi Iwamoto (Nagoya)
Primary Examiner: Kay H. Chin
Law Firm: Sughrue, Mion, Zinn, Macpeak & Seas
Application Number: 7/909,440
Classifications