Method for forming three-dimensional objects from sheet metal

Patent 4215194 Issued on July 29, 1980. Estimated Expiration Date:

February 21, 1998. 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.

Abstract Claims Description Full Text

Patent References

2710791

3325319

3503815

3508108

3723269

3895947

Flat costume jewelry and method for the surface treatment thereof
Patent #: 3959527
Issued on: 05/25/1976
Inventor: Droege

Method for making comb electrode for electrical recording apparatus Patent #: 3962002
Issued on: 06/08/1976
Inventor: Finkbeiner , et al.

Inventor

Shepherd, Stephan C.

Assignee

Masterwork, Inc.

Application

No. 05/880022 filed on 02/21/1978

US Classes:

430/323, Including etching substrate216/100, Substrate contains elemental metal, alloy thereof, or metal compound216/47, Mask is multilayer resist216/48, Mask is exposed to nonimaging radiation216/52, MECHANICALLY SHAPING, DEFORMING, OR ABRADING OF SUBSTRATE29/557, Shaping one-piece blank by removing material29/558, Successive distinct removal operations427/272, Mask or stencil utilized428/7, SPECIAL OCCASION ORNAMENT430/325, Post image treatment to produce elevated pattern430/394, PLURAL EXPOSURE STEPS72/379.2Deforming sheet metal

Examiners

Primary: Kimlin, Edward C.

Attorney, Agent or Firm

International Classes

B44C 3/00 (20060101)
B44C 3/06 (20060101)
C23F 1/04 (20060101)
C23F 1/02 (20060101)
G03F 7/00 (20060101)

Abstract

A method for chemically milling sheet metal to form three-dimensional objects comprising masking the sheet metal by selectively applying a resist material to opposite sides of the sheet metal to form a design, applying an etchant to the masked metal which erodes the metal according to the design, and simultaneously forming connecting tabs and score lines. The tabs and score lines allow certain design portions to be bent to different planes to form the three-dimensional object.