Resources Contact Us Home
Driving apparatus for doors

Image Number 3 for United States Patent #5172518.

This specification discloses an automatic linear-motor-type driving apparatus for doors applied to windows, walls, opening portions as doorways of houses or vehicles, and the like. A driving apparatus for doors according to the present invention comprises: a door-like driven body; a conductive rail having a shape of inverted T with an edge portion at the center thereof, the conductive rail performing a function of a secondary member of a linear motor; two traveling bodies each consisting of two unit traveling bodies opposing each other, the unit traveling bodies moving along a surface of the conductive rail by means of first rollers disposed on a bottom surface thereof to drive the driven body; a connecting portion for connecting the pair of unit traveling bodies and a top of the driven body such that each unit traveling body of the pair of unit traveling bodies oppose each other across the edge portion of the conductive rail; a primary coil of the linear motor disposed on side surfaces of the unit traveling bodies opposing each other; second rollers disposed on side surfaces of the unit traveling bodies opposing each other; the second rollers rolling along side surfaces of the edge portion of the conductive rail while maintaining predetermined gaps between the primary coils and the side surfaces of the edge portion.

  Recently Added Patents
Hybrid fiber constructions to mitigate creep in composites
Combining seismic data from sensors to attenuate noise
Methods and systems for determining the reliability of transaction
Semiconductor device manufacture in which minimum wiring pitch of connecting portion wiring layer is less than minimum wiring pitch of any other wiring layer
Vehicle wheel rim protector
Liquid crystal display device
Buck converter having reduced ripple under a light load
  Randomly Featured Patents
Smoke detector
Method for screening and treating pulp
Fryer heat exchange tube
Vapor-phase epitaxial growth process by a hydrogen pretreatment step followed by decomposition of disilane to form monocrystalline Si film
Spring loaded stacked actuator assembly
Synchronous acquisition circuit and a synchronous acquisition method of a spread spectrum code
Method for installing fasteners in a workpiece
Photovoltaic power conditioning units