The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 1988
Filed:
Dec. 17, 1986
David C Abbe, El Cajon, CA (US);
Kurt Manufacturing Company, Inc., Minneapolis, MN (US);
Abstract
A gas bearing designed for instantaneous 5-10 micro inch separation at startup due to regulated entry and activation of rarefield molecular gas particles. This bearing has two opposing bearing faces with carefully matched geometries. One surface having grooves with lands formed between the grooves that are designed for hydrodynamic operation. The other surface being smooth such as an optically flat plane. The lift-off occurs at startup through the friction-energized gas molecules increasing their volume, and forcing the slowly rotating bearing faces apart. To sustain this effect until the bearing interface reaches its normal design speed, a precisely contoured leading edge is formed on each land which sustains a negative molecular gas pressure in the slowly moving bearing interface, so as not to cause any unwarranted cooling or compression of the gas molecules until such speed is reached so that the normal pressurzied gas bearing liftoff has been achieved, causing the gas compression flow to become unregulated and go normal. The precision contouring of that leading edge may be easily and inexpensively created by several high speed chemical, laser, or air driven abrasive means.