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
Method and system for simulating wireless networks
Method and apparatus for disease diagnosis and screening using extremely low frequency electromagnetic fields
Computer system for routing package deliveries
Nutritional supplement method
Cycloalkylamine substituted isoquinoline and isoquinolinone derivatives
Light barrier and method for detecting objects
Battery module
  Randomly Featured Patents
Silos and methods of burying same
Low profile vibrating floor mat
Powder containing Fe-Ni nano-particles and its manufacturing method
Turbine airfoil with separately formed tip and method for manufacture and repair thereof
Vertical cavity surface emitting laser having intensity control
Mold structure for molding housing, method for molding housing, and housing
Topical applications for skin treatment
Rapid miosis with control of intraocular pressure using a mixture of a cetylcholine and carbachol derivatives
Automatic equalizer