Vacuum cup construction

Details Vacuum cup construction Vacuum cup construction

1988-01-11

1989-08-01

Cherry, Johnny D.

Handling: hand and hoist-line implements

Utilizing fluid pressure

Venturi effect

248363, B25J 1506, B66C 102

Patent

active

048529265

ABSTRACT:
A vacuum cup construction designed to support large items includes a planar outer plate, and a planar, generally coincidentally shaped inner plate which is smaller than the outer plate. A generally flat coincidentally shaped compressible unmolded, non-preformed sealing member, which is larger than the inner plate, is retained between the outer and inner plates by a threaded stud and a threaded nut connecting the outer and inner plates, the tightening of which compresses the sealing member. Compression of the sealing member causes the periphery to deform and form a sealing edge. A vacuum passage passes through the outer plate, the sealing member, and the inner plate to permit a vacuum to be drawn when the assembly is placed against the surface of an item or object.

REFERENCES:
patent: 1252280 (1918-01-01), McDonald
patent: 1302028 (1919-04-01), Fuchs et al.
patent: 2382405 (1945-08-01), Eckman
patent: 2725255 (1955-11-01), Watter
patent: 2871054 (1959-01-01), Zinke
patent: 3152828 (1964-10-01), Lytle
patent: 3377096 (1968-04-01), Wood
patent: 3910620 (1975-10-01), Sperry
patent: 4006929 (1977-02-01), Barker
patent: 4023845 (1977-05-01), Schnebly

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