Distortion free 3 point vacuum fixture
Patent 4357006 Issued on November 2, 1982. Estimated Expiration Date: 
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.
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 InventorApplicationNo. 06/210936 filed on 11/28/1980US Classes:269/21, Vacuum-type holding means269/296, Gapped support279/3, VACUUM408/76, Magnetic or suction means451/388, Vacuum83/451WITH WORK IMMOBILIZERExaminersPrimary: Yost, Frank T.Attorney, Agent or FirmInternational ClassB25B 11/00 (20060101)AbstractThis 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. | |
