# US 2016/0355249 A1 · Jettisonable emergency exit for a vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0355249 A1 - Document ID: US20160355249A1 - Status: Published application - Kind: A1 - Application number: 15/169,906 - Filed: 2016-06-01 - Published: 2016-12-08 - Earliest claimed: 2015-06-05 - Assignees: Airbus Helicopters Deutschland GmbH; Airbus Helicopters - Applicants: Airbus Helicopters Deutschland GmbH; Airbus Helicopters - Inventors: Fabrice JOUSSELLIN; Aurelien VAYSSIERE; Pierre FRUITET; Laure-Anne MATHIEU; Hassene HEBOUB; Philippe BENENTENDI - Web page: https://patentgrep.com/patent/US20160355249A1 ## CPC - B64C 27/04: Helicopters - B64C 1/1492: {Structure and mounting of the transparent elements in the window or windscreen} - B64C: AEROPLANES; HELICOPTERS ## Abstract A jettisonable emergency exit for a vehicle, comprising an outer peripheral edge that is adapted to be accommodated in an associated frame provided in a vehicle, wherein at least one emergency exit retention means and at least one emergency exit locking device are integrated into the outer peripheral edge, the at least one emergency exit retention means comprising at least one non-retractable pivot finger around which the jettisonable emergency exit is rotatable in an emergency mode, and the at least one emergency exit locking device comprising at least one locking hook that is adapted for locking the jettisonable emergency exit in an associated locking position in normal operation mode and for releasing the jettisonable emergency exit in an associated retracted position in the emergency mode. ## Claims ### Claim 1 A jettisonable emergency exit for a vehicle, comprising an outer peripheral edge that is adapted to be accommodated in an associated frame provided in a vehicle, wherein at least one emergency exit retention means and at least one emergency exit locking device are integrated into the outer peripheral edge, the at least one emergency exit retention means comprising at least one non-retractable pivot finger around which the jettisonable emergency exit is rotatable in an emergency mode, and the at least one emergency exit locking device comprising at least one locking hook that is adapted for locking the jettisonable emergency exit in an associated locking position in normal operation mode and for releasing the jettisonable emergency exit in an associated retracted position in the emergency mode, the at least one locking hook being retractable from the associated locking position into the associated retracted position by means of an emergency exit activation strap. ### Claim 2 (depends on 1) The jettisonable emergency exit according to claim 1, wherein the emergency exit activation strap comprises synthetic fibers that are based on polyamide. ### Claim 3 (depends on 1) The jettisonable emergency exit according to claim 1, wherein the emergency exit activation strap comprises nylon. ### Claim 4 (depends on 1) The jettisonable emergency exit according to claim 1, wherein a first emergency exit locking device with a first locking hook is provided at a first section of the outer peripheral edge, and wherein a second emergency exit locking device with a second locking hook is provided at a second section of the outer peripheral edge, the first and second locking hooks being connected to the emergency exit activation strap. ### Claim 5 (depends on 4) The jettisonable emergency exit according to claim 4, wherein the first and second sections are arranged in a predetermined angle at the outer peripheral edge with respect to each other, preferably 90°. ### Claim 6 (depends on 4) The jettisonable emergency exit according to claim 4, wherein a third emergency exit locking device with a third locking hook is provided at the second section of the outer peripheral edge. ### Claim 7 (depends on 6) The jettisonable emergency exit according to claim 6, wherein the third locking hook is connected to the emergency exit activation strap. ### Claim 8 (depends on 1) The jettisonable emergency exit according to claim 1, wherein the at least one locking hook is rotatable by means of the emergency exit activation strap. ### Claim 9 (depends on 1) The jettisonable emergency exit according to claim 1, wherein the emergency exit activation strap is attached to at least one activation handle, the at least one activation handle being manually movable from an initial position defined by an associated handle holder into a first intermediate position by applying an initial release force and being further manually movable from the first intermediate position into a second intermediate position by applying a first traction force, and from the second intermediate position into a release position by applying a second traction force, the second traction force being greater than the first traction force, wherein the at least one locking hook is retracted into the associated retracted position when the at least one activation handle is in the release position. ### Claim 10 (depends on 9) The jettisonable emergency exit according to claim 9, wherein the at least one activation handle defines an inner activation handle and wherein at least one other activation handle is provided, the at least one other activation handle defining an outer activation handle, the inner and outer activation handles being arranged on opposed sides of the jettisonable emergency exit. ### Claim 11 (depends on 10) The jettisonable emergency exit according to claim 10, wherein the outer activation handle is releasable by means of an associated release element for movement from an initial position into a first intermediate position, the outer activation handle being manually movable from the first intermediate position into a second intermediate position by applying a first traction force, and from the second intermediate position into a release position by applying a second traction force, the second traction force being greater than the first traction force, wherein the at least one locking hook is retracted into the associated retracted position when the outer activation handle is in the release position. ### Claim 12 (depends on 10) The jettisonable emergency exit according to claim 10, wherein the at least one locking hook is retractable from the associated locking position into the associated retracted position by means of another emergency exit activation strap, the another emergency exit activation strap being attached to the outer activation handle. ### Claim 13 (depends on 1) The jettisonable emergency exit according to claim 1, wherein the at least one emergency exit retention means and the at least one emergency exit locking device are adapted to allow a rotation of the jettisonable emergency exit in the emergency mode prior to a translational ejection movement of the jettisonable emergency exit, the translational ejection movement being performable in a plane defined by the jettisonable emergency exit. ### Claim 14 (depends on 1) The jettisonable emergency exit according to claim 1, wherein at least one gravity retraction avoidance roller is provided, the at least one gravity retraction avoidance roller being adapted for avoiding unintentional gravity-based retraction of the at least one locking hook from the associated locking position into the associated retracted position. ### Claim 15 (depends on 1) The jettisonable emergency exit according to claim 1, which is configured as a vehicle window, wherein the outer peripheral edge defines an associated window frame. ### Claim 16 A method of releasing a jettisonable emergency exit for ejection from an associated vehicle, comprising at least the steps of: moving an activation handle of the jettisonable emergency exit from an initial position into a first intermediate position, manually moving the activation handle from the first intermediate position into a second intermediate position by applying a first traction force, and manually moving the activation handle from the second intermediate position into a release position by applying a second traction force, the second traction force being greater than the first traction force, wherein the jettisonable emergency exit is ready for ejection from the associated vehicle when the activation handle is in the release position.