Parker-hannifin Corporation

Michael D Bridges

Thomas J Baric

Adis Halimic

William K Fletcher

Alexander M Pankiw

Daniel H Craft

Jeremiah K Miller

Christopher R Vargas

Andrew C McClelland

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. The plurality of screw members includes a first stage screw member that is rotatably supported and axially constrained in a housing fixed with respect to the frame, a last stage screw member attached to the window panel, and at least one intermediate stage screw member, and each intermediate stage screw member has internal and external threads respectively for engaging external and internal threads on next adjacent screw members, such that rotation of the first stage screw member in a first direction relative to the last stage screw member will cause the intermediate and last stage screw members to extend telescopically along an extension axis from the first stage screw member and rotation in a second direction opposite the first direction will cause the intermediate and last stage screw members to telescopically retract.

Window lift mechanism

Provided is a carriage assemblyincluding a carriage, a wheel barthat is deflectable relative to the carriage, and a plurality of wheelsmounted to the barfor rotation around a respective axis, the axisof at least one of the wheelsbeing offset from the axisof at least one of the other wheelsin a direction of the wheel bar deflection. The wheel baris deflected relative to the carriageto allow the wheelsto engage respective railsin a trackto eliminate or reduce play between the wheels and the track.

Wheel preload device

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

Actuator thrust rod and method of assembly

Track body for linear modules

Growing community of inventors

Monroeville, PA, United States of America

Michael D Bridges