Work holders – With fluid means – Vacuum-type holding means
Patent
1984-03-16
1985-12-31
Schmidt, Frederick R.
Work holders
With fluid means
Vacuum-type holding means
269 95, B25B 1100
Patent
active
045616426
ABSTRACT:
A portable vacuum holding device is provided for holding a planar wood workpiece in an elevated position above the flat surface of a workbench so that the workpiece can be conveniently worked upon. The device comprises a plastic molded thin-walled hollow body having four sidewalls with an inwardly rim extending about the upper ends thereof defining a rectangular top opening and an outwardly rim extending about the lower ends thereof defining a rectangular bottom opening. A plastic molded thin-walled sleeve is positioned within a circular opening provided on one of the sidewalls of the hollow body with its shoulder secured by an adhesive to provide an airtight seal. Flat sponge-rubber gaskets are provided on the top and bottom rims. The end connector of a flexible hose provided on a portable vacuum pump is adapted to fit within the sleeve with an airtight fit. When the hollow body is positioned on the flat surface of a workbench and a planar wood workpiece is placed over the top opening thereof, an enclosed chamber is formed which when evacuated by the vacuum pump provides for holding the workpiece on the top rim of the hollow body and for holding the bottom rim of the hollow body against the flat surface of the workbench.
REFERENCES:
patent: 1851028 (1932-03-01), Worrall
patent: 2457908 (1949-01-01), Meyerhoeffer
patent: 2782574 (1957-02-01), Copold
patent: 3520055 (1970-07-01), Jannett
patent: 3584859 (1971-06-01), Siron
patent: 3652075 (1972-03-01), Thompson
patent: 4138080 (1979-02-01), Albert
patent: 4313478 (1982-02-01), Suzuki
Hartman Judy J.
Matlago John T.
Schmidt Frederick R.
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