Propeller impact protector and model flying airplane incorporating same
First Claim
Patent Images
1. An airplane flying toy comprising:
- a longitudinal frame bearing a wing and a stabilizer;
a propeller rotatably disposed at a front end of the frame;
a force generating device attached to the longitudinal frame and adapted to impart a rotary motion to the propeller by a rotatable shaft; and
a propeller protector comprising a substantially continuous frame disposed around and forward of the propeller, the propeller protector being connected by struts to the longitudinal frame;
wherein at least one of the propeller protector struts connects to the longitudinal frame at a position behind the wing.
1 Assignment
0 Petitions
Accused Products
Abstract
An airplane flying toy includes a longitudinal frame bearing a wing and a stabilizer, a propeller rotatably disposed at an end of the frame, a force generating device attached to the longitudinal frame and adapted to impart a rotary motion to the propeller by a rotatable shaft, and a propeller protector extending at least partially around and longitudinally beyond the propeller, the propeller connector being connected by struts to the longitudinal frame.
39 Citations
18 Claims
-
1. An airplane flying toy comprising:
-
a longitudinal frame bearing a wing and a stabilizer; a propeller rotatably disposed at a front end of the frame; a force generating device attached to the longitudinal frame and adapted to impart a rotary motion to the propeller by a rotatable shaft; and a propeller protector comprising a substantially continuous frame disposed around and forward of the propeller, the propeller protector being connected by struts to the longitudinal frame; wherein at least one of the propeller protector struts connects to the longitudinal frame at a position behind the wing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An airplane flying toy comprising:
-
a longitudinal frame bearing a wing and a stabilizer; a propeller rotatably disposed at a front end of the frame; a force generating device attached to the longitudinal frame and adapted to impart a rotary motion to the propeller by a rotatable shaft; a propeller protector extending at least partially around and longitudinally beyond the propeller, the propeller protector being connected by struts to the longitudinal frame and comprising at least one filament; and a battery comprising at least one of a NiMH and a LiPo cell; wherein the force generating device is a coreless DC motor having an output shaft connected to a gear in a reduction gear set and the propeller is connected by a shaft to the other gear in the reduction gear set, and wherein at least one of the wing and the stabilizer comprises a foam structure having a skin attached thereto. - View Dependent Claims (12, 13, 14)
-
-
15. An ultra-light slow flying toy airplane comprising:
-
a frame; and a battery-powered motor attached to the frame, the motor configured to rotate a propeller; wherein the frame comprises a main longitudinal element comprising a longitudinal rod, a wing support structure, and a propeller protector structure, wherein the wing support structure comprises a vertical wing fore strut, a horizontal wing fore strut, a plurality of wing rear struts, and a plurality of chordal struts collectively securing a wing to the main longitudinal element, wherein the propeller protector structure comprises at least one rod disposed to extend at least partially around and longitudinally beyond the propeller, and wherein the propeller protector is connected to at least one of the wing support structure and the main longitudinal element by a plurality of struts. - View Dependent Claims (16, 17)
-
-
18. A propeller and propeller protector combination for flying toys, comprising:
-
a propeller configured to rotate about a center axis; a frame disposed forward of and around the propeller; a plurality of struts connected, at a first end, to the frame and disposed to extend away from the frame in a direction toward and around the propeller and to connect, at a second end, to a frame member behind the propeller, wherein a distance between the connection between the plurality of struts and the frame member and the center axis is less than a corresponding distance between the frame and the center axis where the center axis intersects a plane containing the frame.
-
Specification