Starter solenoid switch with highly reliable contacts

Details Starter solenoid switch with highly reliable contacts Starter solenoid switch with highly reliable contacts

2006-03-07

2006-03-07

Donovan, Lincoln (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

C335S131000

Reexamination Certificate

active

07009475

ABSTRACT:
A starter solenoid switch according to the present invention includes a first and a second set of contacts that are disposed between a battery and a starter motor in parallel with each other. The first and the second sets of contacts are so configured that the second set of contacts is closed to supply a lighter electric current to the starter motor before the first set of contacts is closed to supply a heavier electric current to the same. The second set of contacts is composed of a second fixed contact and a second movable contact, one of which includes a low-resistance portion at one end thereof and a high-resistance portion that contains more carbon than the low-resistance portion. The low-resistance and the high-resistance portions are serially disposed along a conducting path of electric current from the battery to the starter motor, thereby ensuring reliability of the starter solenoid switch.

REFERENCES:
patent: 4801909 (1989-01-01), Fasola
patent: 5521566 (1996-05-01), Krubsack et al.
patent: 5525947 (1996-06-01), Shiga et al.
patent: 5656981 (1997-08-01), Niimi et al.
patent: 6822544 (2004-11-01), Shiga et al.
patent: 2002/0053961 (2002-05-01), Kajino
patent: 2003/0193382 (2003-10-01), Shiga et al.
patent: A 2003-293913 (2003-10-01), None

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