Foldable rotor blade for toy helicopter

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Description

FIG. 1 is a perspective view of foldable rotor blade for toy helicopter showing my new design.

FIG. 2 is a top view thereof.

FIG. 3 is a bottom view thereof. The broken line at the center portion of the blade is for illustrative purpose only and forms no parts of the claimed design.

FIG. 4 is a front view thereof.

FIG. 5 is a rear view thereof.

FIG. 6 is a left view thereof.

FIG. 7 is a right view thereof.

FIG. 8 is a top view of the foldable rotor blade of the new design, illustrating the blades being pivotally folded at one direction.

FIG. 9 is a top view of the foldable rotor blade of the new design, illustrating the blades being pivotally folded at an opposite direction.

FIG. 10 is a perspective view of the new design thereof, illustrating the foldable rotor blade being mounted at the top helicopter, wherein the broken lines of the top helicopter shown in FIG. 10 no part of the claimed design; and,

FIG. 11 is a perspective view of the new design thereof, illustrating two of the foldable rotor blade being mounted at the top helicopter to form a double-blade system thereof, wherein the broken lines of the top helicopter shown in FIG. 11 no part of the claimed design.

It is understood that the broken lines in the drawing are for illustrative purposes only and forms no part of the claimed design.

Claims

The ornamental design for a foldable rotor blade for toy helicopter, as shown and described.

Referenced Cited
U.S. Patent Documents
3124897 March 1964 Shapiro
3722132 March 1973 Seefluth
D290978 July 21, 1987 Capo et al.
4718874 January 12, 1988 Warren
D544825 June 19, 2007 Van de Rostyne et al.
D554040 October 30, 2007 Van de Rostyne et al.
D561084 February 5, 2008 Wai
D561085 February 5, 2008 Wai
D561679 February 12, 2008 Wai
D579403 October 28, 2008 Van de Rostyne et al.
D582833 December 16, 2008 Van De Rostyne et al.
D583297 December 23, 2008 Van De Rostyne et al.
Patent History
Patent number: D646728
Type: Grant
Filed: Apr 21, 2010
Date of Patent: Oct 11, 2011
Inventor: Randy Cheng (San Gabriel, CA)
Primary Examiner: Sandra Morris
Attorney: David and Raymond Patent Firm
Application Number: 29/349,667
Classifications
Current U.S. Class: Element Or Attachment (D21/453); Helicopter (D21/442)