4 results about "Linear actuator" patented technology

An apparatus for cleaning deposits from the interior surfaces of a kiln. The apparatus utilizes a directed high-pressure fluid jet to remove deposits adhering to elements within a kiln. The pressurized fluid is delivered to the fluid jet through the shaft of a rotary drill. The drill shaft is received in a sleeve permitting rotational and longitudinal displacement of the shaft. The sleeve also defines a plenum surrounding the drill shaft to communicate pressurized fluid to the fluid jet throughout longitudinal and rotational displacement of the drill shaft. The drill further utilized a boring bit suitable for penetrating encrusted deposits to provide the fluid jet access to the interior surfaces of the kiln. For removing severe encrustations, the drill bit may be used to partially penetrate the encrustation and a linear actuator may then be employed to press large portions of the encrustation from the kiln's refractory lining.

Provided is an electric linear actuator with which operation lock of a ball screw is prevented and high rotational performance is achieved at a low cost. [Solution] A housing (2) comprises a first housing (2a), and a second housing (2b). An electric motor is attached to the first housing (2a). An accommodation hole is formed at the first and second housings (2a, 2b) to accommodate a screw shaft. A deceleration mechanism (6) comprises an input gear (3) which is fixed to a motor shaft, an intermediate gear (4) which is engaged with the input shaft (3), and an output gear (5) which is engaged with the intermediate gear (4), and fixed to a nut (18) as a single unit. The intermediate gear (4) is rotatably supported via a shell-type needle bearing (23) using gear shafts (22) respectively implanted at the first housing (2a) and the second housing (2b). Ring-shaped washers (27, 28) are mounted on both sides of the intermediate gear (4). A width of a gear section of the intermediate gear (4) is configured to be smaller than a face width.

The invention relates to a translating, locking and rotating leg rest mechanism, and particularly to a foot and leg rest deployment mechanism which prevents the leg rest from rotating into an upright, deployed orientation until fully translated. Likewise, the deployment mechanism prevents the leg rest from translating while in an upright orientation. A rotation arm with a rotation locking channel prevents rotation until a locking arm is disengaged from the rotation locking channel via the locking arm engaging a translation locking portion of a translation channel. A single, linear actuator applies a force to cause both translation and rotation where the leg rest deployment mechanism controls the order of steps of deployment.