Operable stabilization device for a rescue stretcher and method thereof
View Patent ↗An operable stabilization device for a rescue stretcher and method thereof are disclosed. The present invention is especially but not exclusively used in an aircraft rescue of an injured person that is carried in a rescue stretcher suspended from a helicopter by a cord. The stabilization device is configured to adjust direction of a downward airflow from a main rotor of the helicopter to control rotation of the rescue stretcher, and includes a manually operable stabilization sail configured to accept the airflow, an airflow passageway configured to allow and direct the airflow through the stabilization sail and an airflow regulator configured to restrict the amount of airflow being accepted by the airflow passageway.
1. A stabilization device for controlling a downward airflow on a rescue stretcher comprising:
a manually operable stabilization sail configured to accept the airflow;
an airflow passageway configured to allow and direct the airflow through the stabilization sail; and
an airflow regulator configured to restrict the amount of the airflow being accepted by the airflow passageway, wherein the stabilization sail is adjustable between a raised position and a lowered position to control rotation of the rescue stretcher, such that when coupled to the stabilization device:
the rescue stretcher rotates in a clockwise direction in the raised position, and
the rescue stretcher rotates in a counterclockwise direction in the lowered position.
2. The stabilization device according to claim 1 wherein the stabilization sail further comprises a first curved side piece and second curved side piece coupled to a center portion.
3. The stabilization device according to claim 1 wherein the stabilization sail is coupled to a handle.
4. The stabilization device according to claim 1 wherein the stabilization sail comprises a wing shape.
5. The stabilization device according to claim 1 where in the stabilization sail is substantially rectangular in shape.
6. The stabilization device according to claim 1 wherein the airflow passageway has a circular opening.
7. The stabilization device according to claim 1 wherein the airflow passageway is centrally located on the stabilization sail.
8. The stabilization device according to claim 1 wherein the airflow regulator is at least partially overlapping the airflow passageway.
9. The stabilization device according to claim 1 wherein the airflow regulator is rectangular in shape.
10. The stabilization device according to claim 1 wherein the stabilization sail is coupled to the side of a helicopter stretcher.
11. The stabilization device according to claim 1 further comprising a pocket for self storage of the stabilization device.
12. The stabilization device according to claim 1 further comprising:
a stretcher attached to a cord; and
the stabilization device coupled to the stretcher.
13. A method to stabilize a rescue stretcher suspended from a helicopter by a cord, the method comprising providing a manually operable stabilization device according to claim 1 and adjusting the stabilization device to counter balance a downward airflow created by the helicopter to control rotation of the rescue stretcher about the cord.
14. The method according to claim 13 , wherein the adjusting comprises raising a handle of the stabilization device to the raised position to move the rescue stretcher counterclockwise and lowering the handle of the stabilization device to the lowered position to move the rescue stretcher clockwise.
15. A stabilization device for controlling a downward airflow on a rescue stretcher comprising:
a manually operable stabilization sail configured to accept the airflow, wherein the stabilization sail comprises a first curved side piece and second curved side piece coupled to a center portion;
an airflow passageway configured to allow and direct the airflow through the stabilization sail; and
an airflow regulator configured to restrict the amount of the airflow being accepted by the airflow passageway.
16. A stabilization device for controlling a downward airflow on a rescue stretcher comprising:
a manually operable stabilization sail configured to accept the airflow;
an airflow passageway configured to allow and direct the airflow through the stabilization sail; and
an airflow regulator configured to restrict the amount of the airflow being accepted by the airflow passageway, wherein the stabilization sail is coupled to the side of a helicopter stretcher.