Metal working – Method of mechanical manufacture – Electrical device making
Patent
1979-11-13
1981-05-26
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
29622, 29858, 29860, H01F 4100, H01R 4300
Patent
active
042689538
ABSTRACT:
The invention contemplates a unitary magnetically sensitive circuit element or network and a flexibly articulatable elongate assembly of a plurality of such elements or networks, with electrical interconnection of the same, such assembly being inherently suited to precision operation as a function of length, whatever the length selected for a particular application or use. In one application to liquid-depth indication within a tank, the longate assembly is merely inserted into the tube along which a float-borne permanent magnet is guided, and the magnetically sensitive element of each successive unit is actuated as the float tracks liquid level and is displaced from actuating relation with one and then to the next-adjacent one of the circuit-element units. The connection of circuit-element units is such that electrical-resistance observation from one end of the assembly provides a direct indication of the liquid level at which the float magnet is currently operative. Various forms and a method of manufacture are described.
REFERENCES:
patent: 3651297 (1972-03-01), Jones
patent: 3672046 (1972-06-01), Storey et al.
Hall Carl E.
Transamerica DeLaval Inc.
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