초록 ▼

A power drive moves a movable closure between an open position and a closed position with respect to a portal defining a passage through a barrier. The power drive can include an elongated drive member connected to the movable closure and a ball nut drive assembly for selectively moving the drive me

A power drive moves a movable closure between an open position and a closed position with respect to a portal defining a passage through a barrier. The power drive can include an elongated drive member connected to the movable closure and a ball nut drive assembly for selectively moving the drive member longitudinally to position the movable closure between the open position and the closed position with respect to the passage through the barrier. The barrier can define at least a portion of a stationary structure or a vehicle, where the passage allows access within the structure or the vehicle. The movable closure can include a sliding door, hatch, window, or roof panel. The elongated drive member can be a flexible, wire wound push/pull cable having at least one wire member helically wound in uniformly spaced turns around a core of the push/pull cable to form a screw member capable of being driven by operable engagement with the recirculating ball nut drive assembly.

대표청구항 ▼

[ What is claimed is:] [1.] A moveable closure and a power drive for accommodating manual and powered operation of said moveable closure between an open position and a closed position with respect to a portal defining a passage through a barrier, said power drive comprising:an elongate flexible driv

[ What is claimed is:] [1.] A moveable closure and a power drive for accommodating manual and powered operation of said moveable closure between an open position and a closed position with respect to a portal defining a passage through a barrier, said power drive comprising:an elongate flexible drive member connectible to said moveable closure through a non-linear path, said flexible member including a push/pull cable having at least one wire member helically wound in uniformly longitudinally spaced turns around a flexible core member over at least a portion of a longitudinal length of said cable to define an unobstructed helical groove with side wall portions defining an unobstruted open area between adjacent helical windings and a bottom wall portion of the helical groove formed by said core member of said flexible drive member; andball nut drive means having a plurality of recirculating balls operably engaged with said unobstructed helical groove and selectively moving said drive member longitudinally through said non-linear path in response to rotation of said ball nut drive means, and for selectively positioning said moveable closure in said open and closed positions with respect to said passage through said barrier.