Electromagnetic relay

Details Electromagnetic relay Electromagnetic relay

2006-01-17

2008-10-21

Donovan, Lincoln (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Polarity-responsive

C335S128000

Reexamination Certificate

active

07439834

ABSTRACT:
To reduce the internal resistance of small electromagnetic relays of a one-circuit three-contact gap type in order to make it possible to allow large electric currents and at the same time to improve the connection between the fixed contacts and the moveable contacts. Fixed contacts on the fixed terminals are positioned at each apex of an approximate triangle on the upper surface of the insulation base. Moveable contacts are installed on the lower surface of the moveable plate, and are respectively placed in a position which corresponds to each of the fixed contacts. The moveable plate is fastened to the moveable spring whose both ends are held onto the sides of the insulation base, and moves at a specified distance from the fixed contacts due to the pressure of the moveable spring. The construction results in the movable contacts contacting their corresponding fixed contacts at the three positions with uniform contact strength.

REFERENCES:
patent: 5844456 (1998-12-01), Mader
patent: 6611184 (2003-08-01), Hoffmann
patent: 7061350 (2006-06-01), Schneider et al.
patent: 2005/0264388 (2005-12-01), Chida et al.
patent: 10-125202 (1998-05-01), None
patent: 2001-093393 (2001-04-01), None

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