Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Agglomeration or accretion
Patent
1989-04-17
1992-04-14
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
Carbonizing to form article
Agglomeration or accretion
118432, 118429, 118620, 118712, 156 64, 1562735, 1562755, 156378, 1563796, 250432R, 2504921, 264 401, 264308, 364476, 364522, 365106, 365107, 425135, 4251744, 427 8, 427541430.1, B29C 3508, B29C 4102
Patent
active
051045923
ABSTRACT:
An improved sterolithography system for generating a three-dimensional object from object defining information, the information defining the object being structurally specified to reduce curl, stress and distortion in the ultimately formed object is described. A stereolithographic distortion known as curl is reduced by the system, and several techniques to eliminate or reduce curl are utilized by the system, including dashed line, bent line, secondary structure, rivets, and multi-pass techniques.
REFERENCES:
patent: 2775758 (1956-12-01), Munz
patent: 4575330 (1986-03-01), Hull
patent: 4945032 (1990-07-01), Murphy et al.
Freed Raymond S.
Hull Charles W.
Lewis Charles W.
Smalley Dennis R.
Spence Stuart T.
3-D Systems, Inc.
Tentoni Leo B.
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