Latecoere has been granted a patent for an innovative aircraft door design. The door includes a support arm and a locking/unlocking mechanism controlled by a control shaft and guide track. The mechanism allows for smooth transition between locked, unlocked, and open positions, enhancing aircraft safety and efficiency. GlobalData’s report on Latecoere gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Latecoere, Fiber-reinforced material joining techniques was a key innovation area identified from patents. Latecoere's grant share as of April 2024 was 46%. Grant share is based on the ratio of number of grants to total number of patents.

Aircraft door locking/unlocking mechanism with support arm

Source: United States Patent and Trademark Office (USPTO). Credit: Latecoere SA

A recently granted patent (Publication Number: US11920386B2) details an innovative aircraft door design that includes a leaf with a door structure, an external wall, and door stops, along with a surround featuring a door frame fixed to the aircraft fuselage. The door also incorporates a support arm connected to the leaf, allowing movement between closed, unlocking, and open positions. A locking and unlocking mechanism, controlled by internal and external levers, facilitates this movement. The mechanism includes a control shaft, guide track, actuating finger, and mechanical transmission, enabling smooth operation of the door.

Furthermore, the patent outlines various configurations and components of the aircraft door, such as the actuation configuration where the actuating finger interacts with the guide track and fork, and the release configuration where the levers are in the unlocking position. The mechanical transmission involves a cam, connecting rod, and guide lever to ensure precise movement of the actuating finger. Additionally, the support arm's connection to the leaf allows for longitudinal and transverse movement, while a pivot arm enables pivoting of the leaf. The door stops and frame stops ensure secure closure of the door, while the guide track's ranges dictate specific movements of the support arm and leaf. Overall, the patented aircraft door design offers a sophisticated and efficient system for unlocking and opening the door in various directions, enhancing safety and functionality in aircraft operations.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.