HYDRAULIC ACTUATOR WITH FLOATING PISTONS
    1.
    发明申请
    HYDRAULIC ACTUATOR WITH FLOATING PISTONS 有权
    液压执行器与浮动活塞

    公开(公告)号:US20090229694A1

    公开(公告)日:2009-09-17

    申请号:US12045924

    申请日:2008-03-11

    Abstract: A hydraulic actuator is configured to provide redundant boost control to an aircraft within approximately the same space required by a single hydraulic cylinder. The hydraulic actuator includes a housing and a piston assembly disposed within the housing. The piston assembly includes a ram, a first piston secured to the ram, and second and third pistons disposed on the ram such that the second and third pistons are translatable relative to the longitudinal axis of the ram. The pistons form two hydraulically separate actuator cylinders within the space required by a single cylinder which results in a reduction in the weight and size of the hydraulic actuator.

    Abstract translation: 液压致动器被配置为在单个液压缸所需的大致相同的空间内为飞机提供冗余升压控制。 液压致动器包括壳体和设置在壳体内的活塞组件。 活塞组件包括柱塞,固定到冲头的第一活塞,以及设置在冲头上的第二和第三活塞,使得第二和第三活塞可相对于压头的纵向轴线平移。 活塞在单个气缸所需的空间内形成两个液压分离的致动器气缸,这导致液压致动器的重量和尺寸的减小。

    Fuel cell metallic gas diffusion layer

    公开(公告)号:US12237515B2

    公开(公告)日:2025-02-25

    申请号:US17508652

    申请日:2021-10-22

    Abstract: In certain embodiments, an apparatus includes an electrolyte membrane layer (EML), and includes a first electrode catalyst layer (ECL) and a first metallic gas diffusion layer (MGDL) positioned to a first side of the EML such that the first ECL is positioned between the first MGDL and the EML. The first MGDL includes a metal-containing layer and a coating of porous material disposed on a surface of the metal-containing layer of the first MGDL that faces the first ECL. The apparatus further includes a second ECL and a second MGDL positioned to the second side of the EML such that the second ECL is positioned between the second MGDL and the EML. The second MGDL includes a metal-containing layer and a coating of porous material disposed on a surface of the metal-containing layer of the second MGDL that faces the second ECL.

    LANDING GEAR WITH CASTER AND VARIABLE SHIMMY DAMPING

    公开(公告)号:US20250002142A1

    公开(公告)日:2025-01-02

    申请号:US18342123

    申请日:2023-06-27

    Abstract: An aircraft landing gear shimmy damping device for aircraft landing gear with castering may include a centering cam engaged in a curvic slot in an internal diameter of an aircraft landing gear wheel spindle when the landing gear wheel is aligned with forward ground travel of the aircraft, engaging a landing gear wheel shimmy dampener. The centering cam may be pushed out of the curvic slot when the aircraft begins to turn, disengaging the landing gear wheel shimmy dampener, and may slide back into the curvic slot and (re)engage the shimmy dampener, when the landing gear wheel is realigned with forward ground travel of the aircraft.

    CONFIGURABLE LIFT ACTUATOR FOR LAWN MOWER CUTTING UNIT

    公开(公告)号:US20250000017A1

    公开(公告)日:2025-01-02

    申请号:US18341830

    申请日:2023-06-27

    Applicant: Textron Inc.

    Abstract: One embodiment is a cutting assembly for a mower, the cutting assembly comprising a cutting unit comprising a plurality of blades; a lift arm including a float plate, wherein the cutting unit is connected to the lift arm via a yoke and wherein a slot is provided in the float plate; a lift actuator comprising a lift pin disposed in the slot; and a control system for selectively controlling a position of the lift actuator; wherein the position of the lift actuator comprises one of a first operating position, in which the lift pin is positioned proximate a center of the slot and a second operating position, in which the lift pin is positioned between the center of the slot and an end of the slot proximate a body of the actuator.

    Controlled environment composite testing system

    公开(公告)号:US12174152B2

    公开(公告)日:2024-12-24

    申请号:US17112879

    申请日:2020-12-04

    Abstract: A test apparatus includes a first grip, a second grip movable relative to the first grip, a test specimen disposed to provide a load path between the first grip and the second grip, and a test chamber disposed to both substantially envelope the test specimen and move with one of the first grip and the second grip. The test chamber does not contact the test specimen. Another test apparatus includes, a first grip, a second grip movable relative to the first grip, a test specimen disposed to provide a load path between the first grip and the second grip, a first test chamber disposed to both substantially envelope the test specimen and move with one of the first grip and the second grip, and a second test chamber disposed to both substantially envelope both the test specimen and the first test chamber.

    Aircraft thermal management system
    10.
    发明授权

    公开(公告)号:US12134481B2

    公开(公告)日:2024-11-05

    申请号:US17192478

    申请日:2021-03-04

    Abstract: Various implementations directed to an aircraft thermal management system are provided. In one implementation, an aircraft may include a fuselage having one or more fuselage sections. The aircraft may also include one or more electric motors configured to drive one or more propulsion systems of the aircraft, where the one or more electric motors are configured to generate thermal energy. The aircraft may further include an aircraft thermal management system configured to transfer the thermal energy generated by the one or more electric motors to the one or more fuselage sections.

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