Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Motors electrically connected in cascade or tandem
Reexamination Certificate
2007-07-24
2007-07-24
Ip, Paul (Department: 2837)
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
Motors electrically connected in cascade or tandem
C318S066000, C318S083000, C318S095000, C417S002000, C417S003000
Reexamination Certificate
active
10399303
ABSTRACT:
A radiator blower, in particular for motor vehicles, is indicated that comprises a plurality of individual fans (11, 12), each having an electrical drive motor (13, 14), and a plurality of switches (S1, S2, S3), each capable of being switched over into two positions, by means of which the drive motors (13, 14) are capable of being turned on and back off individually or in a series or parallel connection. To prevent disturbing noises from developing when the individual fan (11, 12) comes to rest after being turned off, when the operating drive motor or motors (13, 14) is/are turned off, an electronic control unit (20) forces the switches (S1, S2, S3)—at least temporarily—over into switch positions that bring about a short-circuiting of the turned-off drive motor or motors (FIG.1).
REFERENCES:
patent: 3163252 (1964-12-01), Koci
patent: 4779577 (1988-10-01), Ritter et al.
patent: 4988930 (1991-01-01), Oberheide
patent: 5371445 (1994-12-01), Couetoux
patent: 5488835 (1996-02-01), Howenstine et al.
patent: 5825974 (1998-10-01), Hutton et al.
patent: 6614194 (2003-09-01), Kobayashi et al.
patent: 6747432 (2004-06-01), Yoshimura
patent: 7135826 (2006-11-01), Ma et al.
patent: 2002/0093299 (2002-07-01), Kobayashi et al.
patent: 2003/0140643 (2003-07-01), Yoshimura
patent: 2006/0022620 (2006-02-01), Gubbels
patent: 2006/0099082 (2006-05-01), Simofi-llyes et al.
patent: 2006/0175992 (2006-08-01), Makaran
patent: 2006/0261761 (2006-11-01), Ma et al.
patent: 35 34 908 (1978-04-01), None
patent: 28 27 373 (1980-01-01), None
patent: 1 554 695 (1979-10-01), None
patent: 59-160095 (1984-09-01), None
Patent Abstracts ofJapan vol. 009, No. 268 (M-424), Oct. 25, 1985 & JP 60 113723 A, Jun. 20, 1985.
Ip Paul
Robert & Bosch GmbH
Striker Michael J.
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