U.S. patents available from 1976 to present.
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Adaptive lamina generation for shape dependent process control and/or object decomposition

Patent 5432704 Issued on July 11, 1995. Estimated Expiration Date: Icon_subject November 23, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

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Issued on: 09/05/1989
Inventor: Deckard

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Inventors

Assignee

Application

No. 156321 filed on 11/23/1993

US Classes:

700/182, Including CAD, CAM, or CIM technique345/420, Solid modelling700/119Rapid prototyping (e.g., layer-by-layer, material deposition)

Examiners

Primary: Ruggiero, Joseph

Attorney, Agent or Firm

International Classes

G06F 015/46
G06F 015/72

Abstract

A method of automatically operating a machine with respect to an object having a desired profile, wherein the machine's operation is controlled based on a model of the object's profile. The method includes generating at least a portion of the model in the form of a plurality of successive layers wherein the cross-section of each layer is defined by the intersection of a pair of parallel planes and a model profile connecting the parallel planes. Each layer's thickness is selected such that the geometrical error between the object's desired profile and the model profile of the layer remains no greater than a preselected geometrical error. More than one layer thickness is selected during the step of generating this portion of the object. The machine can be operated in successive steps with each step based on a separate one of the layers.

Other References

  • Chalasani et al, "Computers in Engineering" 1991 Abstract, pp. 209-215
  • Vouzelaud et al, "Solid Freeform Fabrication Proceedings", Dec. 1992 pp. 291-30
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