Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1986-09-08
1987-06-16
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310328, 310345, 310369, 324158P, H01L 4108
Patent
active
046738398
ABSTRACT:
A pressure sensing apparatus for use in an integrated circuit testing station is disclosed. The testing station includes a probe, a support structure, and lift means for moving an integrated circuit upward toward the probe. The invention specifically consists of a pressure pad secured to the support structure directly above the probe. The pad includes a resilient body portion having a rigid tip. Embedded within the pad is a piezoelectric element having electrical contact leads attached thereto. When the testing station is used, an integrated circuit is moved upward by the lift means toward the probe. As the circuit contacts the probe, it moves the probe upward. As the probe moves upward, it pushes on the pad, causing internal pressures to be generated therein. Such pressures are transmitted to the piezoelectric element which generates electrical impulses proportional to the pressures exerted on the pad.
REFERENCES:
patent: 3213666 (1965-10-01), Rudnick
patent: 3810016 (1974-05-01), Chayka et al.
patent: 3832632 (1974-08-01), Ardezzone
patent: 3996516 (1976-12-01), Luther
patent: 4079362 (1978-03-01), Grimm et al.
Budd Mark O.
Lovell William S.
Malkin Jay K.
Tektronix Inc.
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