Electrical generator or motor structure – Educational or construction units or kits
Patent
1974-08-05
1976-07-20
Budd, Mark O.
Electrical generator or motor structure
Educational or construction units or kits
310 91, 310 89, H01L 4104
Patent
active
039708802
ABSTRACT:
A crystal mounting structure for mounting a crystal plate having a plurality of electrodes on major surfaces thereof assembled by means of a rectangular conductive lead frame having a plurality of inwardly extending mounting members and a frame of insulating material defining a central aperture formed with the mounting members embedded therein for rigid support of the crystal plate and electrical connection thereto. A number of rigid conductive mounting members extend through the insulating material and have first portions extending into the central aperture. A number of conductive mounting members hold the mounting structure to the lead frame for later testing purposes. Two of the first portions of the mounting members extending into the central cavity extend inwardly from substantially opposite directions. The crystal plate electrodes are electrically and mechanically secured to the first portions of the mounting members in the central aperture by means of a relatively plastic solder or the like. The first portions are rigid for reducing flexure of the first portions and the crystal plate. Top and bottom covers are secured to the frame, for providing a sealed enclosure, and to a mounting member for providing a grounded RF shield.
REFERENCES:
patent: 2508232 (1950-05-01), Dewey
patent: 3046423 (1962-07-01), Wolfskill et al.
patent: 3173035 (1965-03-01), Fisher
patent: 3643305 (1972-02-01), Furnival
patent: 3828210 (1974-08-01), Livenick
patent: 3849681 (1974-11-01), Scott, Jr. et al.
Deutschmann William B.
Livenick Corwin E.
Paulsen Robert W.
Rose Clifford L.
Tyler Len A.
Budd Mark O.
Gillman James W.
Motorola Inc.
Parsons Eugene A.
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