Cooling-fan rotation-speed control circuit

Details Cooling-fan rotation-speed control circuit Cooling-fan rotation-speed control circuit

2006-08-17

2010-11-30

Kramer, Devon C (Department: 3746)

Pumps

Condition responsive control of pump drive motor

Having ambient condition responsive means

C417S032000, C417S326000, C307S075000, C307S139000, C318S473000, C388S934000

Reexamination Certificate

active

07841837

ABSTRACT:
The present invention discloses a cooling-fan rotation-speed control circuit, wherein a plurality of sets of input power sources respectively having different voltages is electrically and parallel coupled to a cooling fan; a switch is installed between at least one input power source and the cooling fan; the switch is turned on/off according to a rotation-speed parameter to determine whether the cooling fan is driven by a low-voltage driving power or a high-voltage driving power.

REFERENCES:
patent: 3853174 (1974-12-01), Kramer
patent: 4323192 (1982-04-01), Jackson
patent: 4352635 (1982-10-01), Saunders
patent: 4651922 (1987-03-01), Noba
patent: 4806832 (1989-02-01), Muller
patent: 5049801 (1991-09-01), Potter
patent: 5698908 (1997-12-01), Pollmeier et al.
patent: 5962933 (1999-10-01), Henderson et al.
patent: 5990582 (1999-11-01), Henderson et al.
patent: 6172476 (2001-01-01), Tolbert et al.
patent: 6265790 (2001-07-01), Vogman
patent: 6368064 (2002-04-01), Bendikas et al.
patent: 6390379 (2002-05-01), Huang
patent: 6400045 (2002-06-01), Hosokawa et al.
patent: 6583523 (2003-06-01), Bhate
patent: 6735704 (2004-05-01), Butka et al.
patent: 6747369 (2004-06-01), Griffith et al.
patent: 6768225 (2004-07-01), Chang et al.
patent: 6922038 (2005-07-01), Horng et al.
patent: 6956344 (2005-10-01), Robertson et al.
patent: 7145265 (2006-12-01), Mc Nulty et al.
patent: 7538453 (2009-05-01), Roux et al.
patent: 2003/0122438 (2003-07-01), Winkel et al.
patent: 2003/0193307 (2003-10-01), Burstein
patent: 2005/0084384 (2005-04-01), Delano et al.
patent: 1508754 (2005-02-01), None
patent: 420326 (2001-01-01), None
patent: 527090 (2003-04-01), None
patent: 545624 (2003-08-01), None
patent: M241884 (2004-08-01), None
patent: M250225 (2004-11-01), None

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