US 12,330,797 B2
Multi-stage evacuation systems and methods for aircraft
Angela Noelani Cruz, Seattle, WA (US); Mark Edward King, Rigby, ID (US); and Steven Philip McDonald, Marysville, WA (US)
Assigned to The Boeing Company, Arlington, VA (US)
Filed by THE BOEING COMPANY, Arlington, VA (US)
Filed on May 6, 2024, as Appl. No. 18/655,389.
Application 18/655,389 is a continuation in part of application No. 17/951,397, filed on Sep. 23, 2022, granted, now 12,172,761.
Application 17/951,397 is a continuation in part of application No. 17/872,094, filed on Jul. 25, 2022, granted, now 11,999,494.
Claims priority of provisional application 63/271,250, filed on Oct. 25, 2021.
Prior Publication US 2024/0286748 A1, Aug. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B64D 25/18 (2006.01); B64D 25/14 (2006.01); B64C 1/14 (2006.01)
CPC B64D 25/18 (2013.01) [B64D 25/14 (2013.01); B64C 1/1407 (2013.01)] 26 Claims
OG exemplary drawing
 
1. An emergency evacuation system comprising:
a first floatation device;
an inflator operably coupled to the first floatation device; and
a second floatation device coupled to the first floatation device,
wherein the inflator is configured to inflate the first floatation device to deploy the emergency evacuation system outside of a compartment, and
wherein the first floatation device in an inflated state is configured to dispose an open inflation system above water.