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
Color variation control process for molding plastic and composite multi-color articles
Process for preparing synthetic intermediates of peripherally-selective inhibitors of dopamine-.beta.-hydroxylase involving catalytic asymmetric hydrogenation
Switching element for a valve train of an internal combustion engine
Composite high reflectivity layer
Group of amino substituted benzoyl derivatives and their preparation and their use
Nacelle cover
Providing a web page to a client
  Randomly Featured Patents
Pulse rate monitor console
Apparatus and method for producing high fidelity output with a limited resolution output device
Power generating wind turbine
Precursor of a heat resistant resin, heat resistant resin, insulating film and semiconductor device
Method and apparatus for decoding BCH code
Magnetic particles having core-shell structure
Removably coated optical fibre
Nozzle for fabric dryer
Image forming apparatus to select alternate image information and control method thereof
Storage device, control device, and vibration-detection method