# US 2021/0171202 A1 · Device for closing a passage between two seat units > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0171202 A1 - Document ID: US20210171202A1 - Status: Published application - Kind: A1 - Application number: 17/179,713 - Filed: 2021-02-19 - Published: 2021-06-10 - Earliest claimed: 2017-04-04 - Assignees: Safran Seats - Applicants: Safran Seats - Inventors: Bastien Bonnefoy; Patrick Herault - Web page: https://patentgrep.com/patent/US20210171202A1 ## CPC - B64D 11/0606: {with privacy shells, screens, separators or the like (class dividers B64D11/0023)} - B64D 11/0023: {Movable or removable cabin dividers, e.g. for class separation} - B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT ## Abstract The invention relates mainly to a closure device, notably for closing a passage formed in a cabin of an aircraft, comprising: a support means that is able to slide along a slideway in a sliding direction, a closing wall that is able to close off the passage, and a locking system that is able to take up a locked state, in which the locking system ensures a mechanical connection between the closing wall and the support means, such that the closing wall is movable with the support means in the sliding direction, characterized in that, notably in the case of a malfunction, the locking system is able to pass into an unlocked state, in which the closing wall is disconnected from the support means, such that the closing wall is movable on its own in the sliding direction. ## Claims ### Claim 1 Closure device, in particular for closing a passage in an aircraft cabin, comprising: a support means capable of sliding along a slide in a sliding direction, a closure wall capable of closing the passage, and a locking system capable of assuming a locked state in which the locking system provides a mechanical connection between the closure wall and the support means, such that the closure wall is movable together with the support means in the sliding direction, characterized in that, in particular in the event of a malfunction, the locking system is capable of moving into an unlocked state in which the closure wall is disconnected from the support means, such that only the closure wall is movable in the sliding direction. ### Claim 2 (depends on 1) Closure device according to claim 1, characterized in that the locking system comprises at least one stud, in particular provided with a head, which is capable of cooperating with at least one holding zone when the locking system is in the locked state and with at least one disengagement zone when the locking system is in the unlocked state. ### Claim 3 (depends on 2) Closure device according to claim 2, characterized in that the holding zone and/or the disengagement zone is formed in at least one rail. ### Claim 4 (depends on 3) Closure device according to claim 3, characterized in that the rail is arranged on the closure wall and the stud is arranged on the support means, or vice versa. ### Claim 5 (depends on 2) Closure device according to claim 2, characterized in that the locking system comprises at least one retaining member arranged between the holding zone and the disengagement zone. ### Claim 6 (depends on 5) Closure device according to claim 5, characterized in that the retaining member has a retaining force threshold that is greater than a force required to move the closure wall and/or the support means along the slide when the locking system is in the locked state. ### Claim 7 (depends on 5) Closure device according to claim 5, characterized in that the retaining member is formed by a ball bearing mounted on a spring. ### Claim 8 (depends on 1) Closure device according to claim 1, characterized in that an end stop is provided in the closure wall. ### Claim 9 (depends on 8) Closure device according to claim 8, characterized in that the end stop is capable of assuming a blocking position in which the end stop abuts a part that is fixed in position relative to the support means in order to prevent any relative movement of the closure wall relative to the support means, and an unblocking position in which the end stop is disengaged from the part that is fixed relative to the support means in order to allow relative movement of the closure wall relative to the support means. ### Claim 10 (depends on 8) Closure device according to claim 8, characterized in that a gripping means, in particular a handle, in particular positioned on a corner of the closure wall, is capable of controlling a movement of the end stop. ### Claim 11 (depends on 1) Seat unit that comprises at least one housing and is provided with a closure device according to any of the preceding claim 1, characterized in that the closure wall, when in a stowed position, is arranged inside the housing. ### Claim 12 (depends on 11) Seat unit according to claim 11, characterized in that the closure wall is capable of abutting a base of the housing due to gravity when the locking system is in the unlocked state. ### Claim 13 (depends on 12) Seat unit according to claim 12, characterized in that the base of the housing is covered with a layer of a coating having a low coefficient of friction.