Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Apparatus for creating a concave surface from a spectacle blank










Image Number 6 for United States Patent #6227952.

A method for creation of a surface from a rough blank for spectacles is which is suitable for both brittle-hard materials and for plastics uses makes use of a disk-shaped, rotation-symmetrical tool of relatively large diameter, by means of which the material to be taken off the rough blank is removed with high grinding or milling efficiency in at least two work steps--a plunge-cut step and a shaping step with material removed along a spiral path. The outcome of the last work step is a machining path traveling in a spiral from the outside to the inside with low residual apex height and relatively large apex spacing. The resulting surface needs only slight fine-grinding and polishing aftertreatment. As an option, both a rim machining step adapted to the form of the eyeglass frame and a work step faceting the rim of the eyeglasses can be integrated into the method. Furthermore, tools are proposed for carrying out the grinding and milling process.








 
 
  Recently Added Patents
Vertical axis wind turbines
System and method for associating financial transaction data with a user's project data using a portable electronic device
Method of creating exercise routes for a user and related personal navigation device
Transferring storage devices within storage device testing systems
Apparatus and method to reduce noise in magnetic resonance imaging systems
Adaptive control for uncertain nonlinear multi-input multi-output systems
Method for producing interferon alpha 5
  Randomly Featured Patents
Fluid-filled vibration-damping device
Orthodontic coil spring and method of making the same
Method, system, and medium for calculating an emissions allowance
Embedded interaction code recognition
High-strength laminated sheet for optical applications
Reusable applicator tip
Virtual memory unit utilizing set associative memory structure and state machine control sequencing with selective retry
Home yogurt/cheese making machine
New Guinea Impatiens plant named Dueando
Ion storage system