Relay with a core having an enlarged cross-section

Details Relay with a core having an enlarged cross-section Relay with a core having an enlarged cross-section

2006-04-11

2006-04-11

Donovan, Lincoln (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Polarity-responsive

C335S128000

Reexamination Certificate

active

07026896

ABSTRACT:
The invention relates to a relay comprising a coil bobbin, a core penetrating the coil bobbin and a yoke. To achieve a high switching force with a low overall height, the cross-sectional area of the core is greater in the region toward the transition to the yoke than in the central region of the coil bobbin. Increased magnetic flux can be conveyed from the core owing to the cross-sectional enlargement and at the same time more coil windings can be arranged in the central region owing to the reduced cross-section there. Both measures act together and allow high switching forces with low overall height.

REFERENCES:
patent: 2539547 (1951-06-01), Mossman et al.
patent: 3497845 (1970-02-01), Bernier
patent: 5084688 (1992-01-01), Martino
patent: 5627503 (1997-05-01), Mader
patent: 5945900 (1999-08-01), Shibata et al.
patent: 42 32 228 (1993-04-01), None
patent: 0 202 651 (1986-11-01), None
patent: 0 202 651 (1986-11-01), None
patent: 0 363 176 (1990-04-01), None
patent: 0 691 667 (1996-01-01), None
patent: WO 00/24019 (2000-04-01), None

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