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:
Jan. 26, 1993
Filed:
Jan. 22, 1992
Thomas J Vorgitch, Simi Valley, CA (US);
Raymond A Bradford, Los Angeles, CA (US);
Grady O Floyd, Newhall, CA (US);
Harry L Tarnoff, Van Nuys, CA (US);
Wayne A Vinson, Valencia, CA (US);
Frank F Little, Lakeview, CA (US);
Richard A Harlow, Marina Del Rey, CA (US);
Wolfgang Schwarzinger, Moorpark, CA (US);
Paul H Marygold, Monrovia, CA (US);
Mark A Lewis, Valencia, CA (US);
Yehoram Uziel, Northridge, CA (US);
Borzo Modrek, Montebello, CA (US);
Robert T Pitlak, Westlake Village, CA (US);
Thomas P Chen, Saugus, CA (US);
3D Systems, Inc., Valencia, CA (US);
Abstract
A stereolithography system employing a more powerful laser and faster dynamic mirrors to speed up part building without sacrificing accuracy is described, especially large or complex parts. A controllable shutter is placed in the beam path of the laser to selectably block the passage of the beam and prevent unwanted solidification. A suitable servo controlled feedback loop is provided to accurately position the mirrors at the higher velocity. Also described is a means to reduce data flow by distributing tasks in a multiple processor environment, and to improve user interaction by the use of a spreadsheet model. These also improve the speed of part building, especially for large or complex parts.