Shock absorbing evacuation system restraint

Patent metadata

Field	Value
Publication number	US-10486818-B2
Application number	US-201715407818-A
Country	US
Kind code	B2
Filing date	Jan 17, 2017
Priority date	Jan 17, 2017
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

A restraint arrangement for an inflatable slide may comprise a force releasing member attached to the inflatable slide at at least two locations, and a dampener in operable communication with the force releasing member such that a rate of force applied to the force releasing member is reduced compared to if the dampener was not present.

First claim

What is claimed is:

1. A restraint arrangement for an inflatable slide comprising:
a force releasing member attached to the inflatable slide at least two locations;
a dampener in operable communication with the force releasing member such that a rate of force applied to the force releasing member is reduced compared to if the dampener was not present;
a first strap coupled to the force releasing member at a first location;
a second strap coupled to the force releasing member at a second location; and
the dampener is coupled to the force releasing member in parallel with the second strap.

2. The restraint arrangement of claim 1 , wherein the force applied to the force releasing member is due to a pressure increase that causes the inflatable slide to inflate.

3. The restraint arrangement of claim 2 , wherein the dampener is a dashpot.

4. The restraint arrangement of claim 2 , wherein the dampener is a shock absorber.

5. The restraint arrangement of claim 4 , wherein the dampener comprises an elastic strap.

6. The restraint arrangement of claim 2 , wherein the force releasing member comprises the dampener.

7. The restraint arrangement of claim 2 , wherein the force releasing member is configured to separate in response to the pressure increase.

8. The restraint arrangement of claim 1 , wherein the force releasing member is configured to separate in response to a predetermined pressure.

9. A restraint arrangement for an evacuation system comprising:
a restraint comprising;
a dampener body coupled to a second strap;
a plunger coupled to a first strap, wherein the plunger is configured to extend from the dampener body in response to an internal pressure of the evacuation system;
a spring member; and
a shear pin configured to break in response to the internal pressure of the evacuation system being greater than a threshold value;

the first strap coupled between the restraint and the evacuation system; and
the second strap coupled between the restraint and the evacuation system;
wherein the restraint is configured to separate in response to a tensile force applied to the first strap, the second strap, and the restraint.

10. The restraint arrangement of claim 9 , wherein the second strap comprises an elastic material, the second strap configured to stretch to dampen a load through the restraint.

11. The restraint arrangement of claim 10 , wherein the restraint is configured to separate in response to the load.

12. The restraint arrangement of claim 9 , wherein at least one of the first strap and the second strap comprises a nylon webbing.

13. The restraint arrangement of claim 9 , further comprising a dampener coupled in series with the restraint configured to dampen a load through the restraint.

14. The restraint arrangement of claim 13 , wherein the dampener comprises a dampener body and a plunger configured to translate within the dampener body.

15. The restraint arrangement of claim 9 , wherein the evacuation system is configured to unfold in response to the restraint separating.

Assignees

• Goodrich Corp

Inventors

• Volny Jaro
• Hartman Drew

Classifications

• B64D25/08

  Ejecting or escaping means · CPC title

• A62B1/20

  by making use of sliding-ropes, sliding-poles or chutes, e.g. hoses, pipes, sliding-grooves, sliding-sheets · CPC title

• B64D25/14 Primary

  Inflatable escape chutes · CPC title

• B63B27/28

  of chutes · CPC title