U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Distortion free 3 point vacuum fixture

Patent 4357006 Issued on November 2, 1982. Estimated Expiration Date: Icon_subject November 28, 2000. 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.

Patent References

799922

2529331

2701723

2729040

2730370

2782574

3084928

3116919

3484093

Variable contour securing system Patent #: 4088312
Issued on: 05/09/1978
Inventor: Frosch, et al.

Inventor

Application

No. 06/210936 filed on 11/28/1980

US Classes:

269/21, Vacuum-type holding means269/296, Gapped support279/3, VACUUM408/76, Magnetic or suction means451/388, Vacuum83/451WITH WORK IMMOBILIZER

Examiners

Primary: Yost, Frank T.

Attorney, Agent or Firm

International Class

B25B 11/00 (20060101)

Abstract

This is a vacuum clamp for holding workpieces which assures that the workpiece is held without distortion. This is accomplished by providing a fixed support, with a convex surface, and a flexible seal around the fixed support so that when a vacuum is drawn within the seal the workpiece being held abuts the fixed support tangentially. The convex surface of the support does not force the workpiece to conform to the surface of the support as it would if the surface of the support were flat.

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