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
Method for transmitting a signal from a transmitter to a receiver in a power line communication network, transmitter, receiver, power line communication modem and power line communication syst
Bioreactor device, and method and system for fabricating tissues in the bioreactor device
Cartridge for separating analyte from mixture, comprising dispensing and receiving chambers and insert
System and methods for obstacle mapping and navigation
Enterprise seamless mobility
Method for assisting in the checking of transaction records, transaction device, server, mobile terminal, and corresponding computer programs
Techniques for determining optimized local repair paths
  Randomly Featured Patents
Method and system for authenticating reliable biometric data
Apparatus for filling self-sealing tubes
Portable radio communication terminal having expression style processing apparatus therein and express style method
Appliance for measuring pressure
Wireless station, wireless transmission method for the wireless station, and wireless transmission system using the wireless station
Data latch circuit and electronic device
Portable hands-free gas pumping device and method therefor
Electrode array for even neural pressure
Contact method for multiphase processing
Reducing the oxygen content of tantalum