Resources Contact Us Home
Deformable switch keyboard

Image Number 2 for United States Patent #4375585.

A deformable switch keyboard assembly with a flexible unitary top member, a compressible intermediate switch assembly layer and a bottom member providing mechanical support for the intermediate assembly and mechanical isolation for the switching function.The top member has a plurality of switch site defining regions extending in a first direction and located in a predetermined array to define the keyboard. The intermediate switch assembly has a plurality of switch sites each underlying a different one of the top member projections. The bottom member has first and second sets of projections extending toward the top member, each of the first set of projections underlying a different one of the switch sites and providing a compression contact beneath the intermediate switch assembly when the corresponding top member region is actuated to advance in the first direction. Each of the second set of projections is located intermediate different adjacent ones of the switch sites and is longer than any of the first set of projections in order to provide mechanical isolation between an actuated switch site and the remainder of the switch sites.

  Recently Added Patents
Generation, display, and manipulation of measurements in computer graphical designs
Methods of establishing virtual circuits and of providing a virtual private network service through a shared network, and provider edge device for such network
System and method for optimizing use of plug-in air conditioners and portable heaters
System for presenting media services
Light emitting device power supply circuit, and light emitting device driver circuit and control method thereof
Information processing using batch setting information
Electrical terminal
  Randomly Featured Patents
Method and apparatus for adaptive synchronization of digital video and audio playback in a multimedia playback system
Substrate table
Bachmann's bundle electrode for atrial defibrillation
Portable reference laser unit and attachment accessory
Bench seat cushion
Printing with alternative halftone patterns in ink jet printing to reduce ink penetration
Eating utensil tool apparatus
Collision air bag and flotation system
Conveying of filament bundles over long conveying sections