Electrical generator or motor structure – Educational or construction units or kits
Patent
1975-01-23
1976-08-24
Favors, Edward G.
Electrical generator or motor structure
Educational or construction units or kits
310 91, 317DIG11, H01V 700
Patent
active
039769003
ABSTRACT:
In a piezo-electric manually-operated spark generating device the actuating mechanism comprises an actuating lever pivoted on the body of the device which accommodates the piezo-electric crystal assembly. It is arranged that in response to pivotal movement of the lever a cam rotates through a small angle between a fixed abutment and a relatively fixed head or pressure pad of the crystal assembly to exert high pressure on the crystal assembly for the generation of sparks. The cam is formed with precision by blanking or stamping from sheet metal so that it does not need to be subsequently machined as in the case of prior cam construction which would increase the cost of the cam. The stamping out or blanking of the cam from sheet metal also enables a roll pin to be formed integrally with the cam instead of being a separate member which is received by a hole in the cam.
REFERENCES:
patent: 3262019 (1966-07-01), Maltner et al.
patent: 3463943 (1969-08-01), Parkinson
patent: 3558903 (1971-01-01), Kiasha
Favors Edward G.
Plessey Handel und Investments A.G.
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