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US Patent 4357006 - Distortion free 3 point vacuum fixture
US Patent Issued on November 2, 1982
Estimated Patent Expiration Date:
November 28, 2000Estimated 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.
Estimated Patent Expiration Date:
November 28, 2000Estimated 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.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. | 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 IMMOBILIZERField of Search269/21, Vacuum-type holding means269/296Gapped supportExaminersPrimary: Yost, Frank T.Attorney, Agent or FirmUS Patent References799922, 2529331, 2701723, 2729040, 2730370, 2782574, 3084928, 3116919, 3484093, 4088312Variable contour securing systemIssued on: 05/09/1978 Inventor: Frosch, et al. International ClassB25B 11/00 (20060101) |
