Method for milling and drilling glass
AssigneeThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration
InventorStephen H. Rice
Life of this patent
Estimating the term…
Abstract
A process for machining glass by placing a rotating carbide working surface under minimum pressure against an area of glass to be worked and concurrently wetting the region between the working surface and the area of glass with a lubricant consisting essentially of a petroleum carrier, a complex mixture of esters and a complex mixture of naturally occurring aromatic oils.
Claims7
A process for machining glass, comprising the steps of:
- placing a carbide working surface of a solid tool against an area of a glass workpiece;
- wetting the working surface with a lubricant consisting essentially of a middle molecular weight petroleum distillate carrier, a complex mixture of esters, and a complex mixture of naturally occurring aromatic oils;
- and
- driving said wetted working surface with continuous motion and minimal pressure against said glass workpiece area.
A process for machining glass, comprising the steps of:
- placing a rotating carbide working surface subject to minimum pressure against an area of glass to be worked;
- wetting the region between the working surface and the area to be worked with a lubricant consisting essentially of a mixture of a middle molecular weight petroleum distillate, a complex mixture of synthetic esters, and a complex mixture of natural occurring, purified aromatic oils.
A process for machining glass, comprising the steps of:
- driving a tool having a working surface of a material exhibiting a hardness greater than glass with continuous motion and minimal pressure against a glass workpiece;
- and
- wetting the region between said working surface and said glass workpiece with a liquid phase lubricant consisting essentially of a complex mixture of synthetic esters, a complex mixture of purified aromatic oils of plant origin arranged with a definite distribution, and a middle molecular weight petroleum distillate carrier.
Dependencies are inferred from the claim text.