Handling: hand and hoist-line implements – Grapple – Resilient jaws
Patent
1975-04-07
1976-09-21
Cherry, Johnny D.
Handling: hand and hoist-line implements
Grapple
Resilient jaws
81 43, 294 33, B25B 902
Patent
active
039815277
ABSTRACT:
A tweezers for use in the movement of semi-conductor wafers can be constructed utilizing upper and lower arms connected to one another in an established manner so that the free or holding ends on such arms may be moved towards one another. In a tweezers as disclosed the holding end of the lower arm includes a flat plate and a shoulder connected to the plate to the remainder of the lower arm and the holding end on the upper arm includes a plurality of separate resilient fingers extending from a support securing these fingers to the remainder of the upper arm. When the plate is inserted beneath an object such as a semi-conductor wafer by appropriate manipulation of the arms the fingers can be brought against such an object so as to hold it against the plate. The resilient fingers are not apt to break such an object as it is held on the plate and will accommodate any variation in the height of such an object.
REFERENCES:
patent: 1919469 (1933-07-01), Keizer
patent: 2217319 (1940-10-01), Poole et al.
patent: 2304966 (1942-12-01), Thrower
patent: 2636500 (1953-04-01), Schwartz
patent: 2818866 (1958-01-01), Thomas
patent: 3496807 (1970-02-01), Jones et al.
patent: 3665790 (1972-05-01), Jones
patent: 3741602 (1973-06-01), Ploeckelmann
Cherry Johnny D.
Interconsal Associates, Inc.
O'Brian Edward D.
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