Folding hub assembly for propeller blades

Description

FIG. 1 is a front elevational view of a folding hub assembly for propeller blades showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a side elevational view thereof, the opposite side view being a mirror image of that shown;

FIG. 4 is an end elevational view thereof, the opposite end view being a mirror image of that shown;

FIG. 5 is a front perspective view thereof; and

FIG. 6 is a front perspective view thereof showing the propeller shaft attachment.

Referenced Cited
U.S. Patent Documents
D171582 March 1954 Conrad
D203780 February 1966 Beck
3715171 February 1973 Kettner
4768927 September 6, 1988 Munk
Foreign Patent Documents
407547 October 1944 ITX
Patent History
Patent number: D307738
Type: Grant
Filed: Jun 1, 1988
Date of Patent: May 8, 1990
Inventor: Thomas C. Kerr (Philadelphia, PA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Kay H. Chin
Law Firm: Steele, Gould & Fried
Application Number: 7/201,093
Classifications
Current U.S. Class: Propeller (D12/214)