Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1998-04-02
1999-06-01
Gellner, M. L.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
335177, 335178, 335259, H01F 500, H01F 700, H01F 708
Patent
active
059091665
ABSTRACT:
A safety switch includes a spring-biased locking pin which is displaceable axially inside a switch housing by a lifting magnet against the biasing force of the spring to switch a switching element between a blocking position and a release position, and a retention magnet which holds the locking pin in the release position when the lifting magnet is de-energized.
REFERENCES:
patent: 1404910 (1922-01-01), Thompson
patent: 1767058 (1930-06-01), Eiseman
patent: 4065096 (1977-12-01), Frantz et al.
Dreyer Dirk
Scharlibbe Heinz
Ulfik Joachim
Wecke Rolf
Barrera Raymond
Feiereisen Henry M.
Gellner M. L.
Hans Bernstein Spezialfabrik fur Schaltkontakte
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