Resources Contact Us Home
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
Automated gate system
Position-measuring device
Method of predicting a motion vector for a current block in a current picture
Simulation tool for air traffic communications security
Protection circuit, substrate for electro-optical device, electro-optical device, electrophoretic display device, electronic apparatus, and manufacturing method of electro-optical device
Generator with a segmented stator
Systems and methods for simultaneously configuring multiple independent backups
  Randomly Featured Patents
Method of retrieving schemas for interpreting documents in an electronic commerce system
Semiconductor device manufacturing apparatus, method for removing reaction product, and method of suppressing deposition of reaction product
Flip-lens device with low prescription magnifier
Artificial gelatins of high methionine content for photographic film
Compounds, compositions and methods for treatment of inflammatory diseases and conditions
Lithographic apparatus, device manufacturing method and device manufacturing thereby
Voltage monitoring using bitstream signal processing
Ultrasonic diagnostic imaging system with articulating display