Ekso Bionics. has been granted a patent for an electromagnetic brake assembly featuring a solenoid coil, a movable ferrous armature, and a rotating member. The design includes a conical braking interface and a friction O-ring, enhancing braking efficiency when the solenoid is energized. GlobalData’s report on Ekso Bionics 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 Ekso Bionics, Ambulatory assistance devices was a key innovation area identified from patents. Ekso Bionics's grant share as of July 2024 was 60%. Grant share is based on the ratio of number of grants to total number of patents.
Electromagnetic brake assembly with conical braking interface
The patent US12071990B2 describes an innovative electromagnetic brake assembly designed for use in powered mobility assistance devices. The assembly features a solenoid coil, a fixed ferrous brake stator, and a movable ferrous armature with a conical braking face. This armature can transition between disengaged and engaged positions, allowing it to apply a braking force to a rotating member when the solenoid coil is energized. The design incorporates a conical braking interface formed by the armature's conical face and a tapered surface on the rotating member, enhanced by a friction O-ring that rolls within a groove at the interface. Additional features include anti-rotation mechanisms to stabilize the armature's movement and configurations that allow for slight rotational movement.
In the context of powered mobility assistance devices, the electromagnetic brake assembly is integrated into an actuator assembly that includes a motor and transmission system. This setup enables the brake to apply a holding torque to a driven joint member, which connects to components such as knee-ankle-foot orthoses (KAFO) or hip-knee-ankle-foot orthoses (HKAFO). The design allows for flexible cabling to connect the driven joint member to the actuator assembly, facilitating adaptable positioning. The assembly may also include magnets or springs to assist in retracting the armature when the solenoid coil is de-energized, ensuring reliable operation in mobility aids.
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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.
