Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Biaxial scissors fold, post tensioned structure










Image Number 4 for United States Patent #4539786.

A structure capable of being expanded and retracted. The structure includes a pair of cells each including a plurality of leg elements which are pivotally joined at one end to form an apex point and which are pivotally joined at their opposite ends from the apex point connection to the corresponding leg element from the other cell to form a plurality of common base points. The structure also includes a plurality of hinged elements connected between adjacent common base points to thereby form a common base and the hinged elements each have a pair of sections that are connected at a hinge point approximately midway between the adjacent common base points to which the other end of each section is connected. The structure further includes an actuator means having its ends pivotally attached to the apex points and a means associated with the actuator means for biasing the apex points to which the actuator means is attached towards and away from each other whereby the leg elements pivot about the apex points and the base points, the sections of the hinged elements pivot about the base points and the hinge points to thereby expand or retract the structure, respectively.








 
 
  Recently Added Patents
Non-aqueous electrolyte battery
Three-dimensional shape data processing apparatus and three-dimensional shape data processing method
Method of and apparatus for laser drilling holes with improved taper
Picture quality control method and image display using same
Regenerative power storage system mounted on DC electric railway car
LED package chip classification system
Vehicle drive control system
  Randomly Featured Patents
Fiber Bragg grating and fabrication method
Thermosetting optical waveguide coating
Cooling device and image forming apparatus using the same
Tabletop fountain
Antithrombotic peptides
Component mounting method
Slotted roller skate
Plant watering apparatus
Cis-2,6-disubstituted piperidines for the treatment of psychostimulant abuse and withdrawal, eating disorders, and central nervous system diseases and pathologies
Method of making a heterojunction bipolar transistor