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










Image Number 2 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
Analysis device and an analysis apparatus using the analysis device
Method and system for fail-safe call survival
Subpixel-based image down-sampling
Techniques for performing translation of messages
Secondary battery pack including insulative mounting member into which PCM is inserted in lateral direction
Detecting the type of NAT firewall using messages
Method and system for physical verification using network segment current
  Randomly Featured Patents
Power-unit support structure of motorcycle
Roof shingle remover
Musical instrument with free reeds
IUD inserting apparatus
Hub assembly for automotive vehicles
Microphone assembly for speech recording using noise-adaptive output level control
Patient support system
Charge coupled device subtractor
Maize variety hybrid X00A926
Gaming device and method for enhancing the issuance or transfer of an award