Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Clinch fastener










Image Number 3 for United States Patent #6394686.

A concealed, clinch ("crown") fastener (30) includes a cylindrical body (32) closed at one end to form a surface (34) deformable to attach the fastener to a binder ring mechanism (18). A first set (40) of prongs (42) extend from the opposite, open end of the fastener body to attach the fastener to a binder spine material (M) when the prongs are driven into the material. A second set (50) of prongs (52) are also formed at this end of the fastener, intermediate adjacent prongs comprising the first set. These prongs are shorter in length than those comprising the first set, and while the prongs forming the first set extend from the body in one direction, the prongs forming the second set extend in the opposite direction. The fastener provides better holding strength than other concealed fasteners and better resists pulling and twisting forces which tend to pull the mechanism away from the binder cover than these other fasteners.








 
 
  Recently Added Patents
Compositions substantially free of sodium chloride and methods for the storage of red blood cells
Highly stable electrolytic water with reduced NMR half line width
Stable pharmaceutical composition and methods of using same
Battery comprising circuitry for charge and discharge control, and method of operating a battery
Computer device with digitizer calibration system and method
Radiation-emitting semiconductor chip and method for producing a radiation-emitting semiconductor chip
Playlist search device, playlist search method and program
  Randomly Featured Patents
Isolation trench with a rounded top edge using an etch buffer layer
Comb
Method and apparatus for gain control in a CMOS low noise amplifier
Duplexer module
Monocyclic compounds and their use in medicine: process for their preparation and pharmaceutical compositions containing them
Confocal microscopic equipment
Transformer comprising coaxial coil formers
Battery charging capacitors electromagnetic launcher
Laser spraying process
Vacuum valve with heater