Abstract: A window positioning apparatus for a vehicle comprising a window panel, a frame in which the window panel is guided between a closed position closing a window opening in the frame and an open position opening the window opening, and a multi-stage telescoping screw actuator mechanism connected between the window panel and the frame, the actuator mechanism being extendible to move the window panel from its open position to its closed position and collapsible to move the window panel from its closed position to its open position. The multi-stage telescoping screw actuator mechanism includes a plurality of screw members of progressively decreasing diameter respectively telescopically disposed within a next adjacent screw member of larger diameter.

Abstract: A window positioning apparatus for a vehicle comprising a window panel, a frame in which the window panel is guided between a closed position closing a window opening in the frame and an open position opening the window opening, and a multi-stage telescoping screw actuator mechanism connected between the window panel and the frame, the actuator mechanism being extendible to move the window panel from its open position to its closed position and collapsible to move the window panel from its closed position to its open position. The multi-stage telescoping screw actuator mechanism includes a plurality of screw members of progressively decreasing diameter respectively telescopically disposed within a next adjacent screw member of larger diameter.

Abstract: A linear actuator includes an actuator housing (20), a drive screw assembly (26) extending into the actuator housing (20), a tubular thrust rod (22), and an inner sleeve (104) disposed therein and engaging the drive screw assembly (26) for supporting the drive screw assembly (26) against radial movement during axial movement of the thrust rod (22) relative to the actuator housing (20). The drive screw assembly (26) includes a rotatable drive screw (72), a nut (74) coupled to the thrust rod (22) for movement with the nut (74) and in threaded engagement with the screw (72) for driving the nut (74) relative to the screw (72), and a screw bearing (76) coupled to a distal end (90) of the screw (72) for providing engagement between the screw (72) and the inner sleeve (104), where the nut (74) translates rotational movement of the screw (72) into axial movement of the thrust rod (22).

Abstract: A linear actuator includes an actuator housing (20), a drive screw assembly (26) extending into the actuator housing (20), a tubular thrust rod (22), and an inner sleeve (104) disposed therein and engaging the drive screw assembly (26) for supporting the drive screw assembly (26) against radial movement during axial movement of the thrust rod (22) relative to the actuator housing (20). The drive screw assembly (26) includes a rotatable drive screw (72), a nut (74) coupled to the thrust rod (22) for movement with the nut (74) and in threaded engagement with the screw (72) for driving the nut (74) relative to the screw (72), and a screw bearing (76) coupled to a distal end (90) of the screw (72) for providing engagement between the screw (72) and the inner sleeve (104), where the nut (74) translates rotational movement of the screw (72) into axial movement of the thrust rod (22).

Abstract: A linear actuator having particular application for reconfigurable fixtures used to hold large area workpieces. The linear actuators include a thrust rod connected to a translatable nut member that is driven by a rotatable drive screw that has a longitudinal axis off-set from the longitudinal axis of the thrust rod that preferably is centrally disposed within the housing of the actuator. The off-set axis of the drive screw enables the drive screw per unit size to handle greater loads and run at higher speeds. Also, the use of a solid thrust rod enables the thrust rod per unit size to handle greater loads and be less expensive as opposed to being hollow when the drive screw is coaxial with the thrust rod. This arrangement also enables less material to be used to manufacture the linear actuator per unit size. The linear actuators may be used as an alternative to existing assemblies with central thrust rods.

Abstract: A linear table includes a slide plate, a base, and pair of bearing assemblies. Each bearing assembly has an inner and outer bearing way, and a rolling element located between the bearing ways. The bearing ways are securely fixed to the slide plate and the base. A precision parallel device and preload fixture are used to align the bearing ways and provide a proper preload on the bearing assemblies without integral preload screws or other preload method, or integral bearing locating shoulders or other such geometry.

Abstract: A method of producing a green compact which includes the steps of forming a generally homogeneous powder blend of powder components; consolidating the powder blend into a green body wherein the green body includes a flashing; impinging the green body with a fluid stream so as to dislodge the flashing; and removing the dislodged flashing from the surface of the green body.

Abstract: A package assembly formed from two detachably connectable package modules is provided for separately packaging a plurality of articles, such as machine tool cutting inserts. Each package module is substantially structurally identical to the other module, and comprises a tray having a top portion, a bottom wall, side walls, and a plurality of spaced-apart interior walls that define a plurality of article-holding chambers, a transparent lid slidably mounted on the top portion of the tray for retaining, displaying, and sequentially dispensing articles disposed in the article-holding chamber of the tray. Each tray further comprises a cantilevered lip on the exterior of the tray for releasably interconnecting the side walls of the trays of two different package modules such that the bottom wall of the tray of one module and the transparent lid of the other module face the same direction. A label concerning the nature of the articles may be applied to the bottom wall of the tray or to the lid of each module.

Abstract: A tool is insertable in the narrow annular access space between the cylindrical core barrel and the thermal shield of a nuclear reactor for testing and removing a plug from a flow hole in the core barrel. The tool includes two hydraulically driven jaws which have gripping flanges receivable in a peripheral groove in the plug head for gripping same. The jaws are thin plate-like members and each carries two short pistons having a length less than the thickness of the jaws and hydraulically extendable into engagement with the core barrel for exerting on the jaws and the gripped plug a predetermined force in a plug-removing direction. The jaws are preferably substantially coplanar and carried by a flat arm with the plane of the jaws disposed at a slight angle to the plane of the arm, which angle is selectively variable. Means are provided for pivotally moving the arm about an axis substantially parallel to the axis of the plug.