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
Information display device and program storing medium
Smart television system having methods or means for accessing paid or subscribed digital content from the internet
Multi-level integrated circuit, device and method for modeling multi-level integrated circuits
Computer network running a distributed application
Animation control apparatus, animation control method, and non-transitory computer readable recording medium
High performance actuator motor
Method for restricting the use of an application program, system for authenticating the user of a measuring apparatus, authentication server, client apparatus and storage medium
  Randomly Featured Patents
Apparatus for filling and hermetically sealing thermoplastic containers under vacuum
Display device drive circuit
Dead reckoning range finding device for cart
Method for controlling multiple common memories and multiple common memory system
Process for producing high-capacity concrete beams or girders
Information processor input device thereof and display device
Wheeled table foot
Apparatus for metered filling of toner from a reservoir into the developing station of a printer or copier device
Valve packing removal tool
Digital message transmission protocol