Vehicular two-wheel drive and four-wheel drive switching system

Details Vehicular two-wheel drive and four-wheel drive switching system Vehicular two-wheel drive and four-wheel drive switching system

2005-11-08

2005-11-08

Boehler, Anne Marie (Department: 3611)

Motor vehicles

Having four wheels driven

C180S247000, C192S1030FA, C701S069000

Reexamination Certificate

active

06962226

ABSTRACT:
To provide a vehicular two-wheel drive and four-wheel drive switching system the power consumption of which can be reduced. A vehicular two-wheel drive and four-wheel drive switching system is provided with a switching unit for transmitting power or disconnecting the transmission of power. The switching unit is provided with a driving shaft connected to the drive side, a driven shaft fitted to the driving shaft via an annular clearance gap. A plurality of connecting/disconnecting members are provided in a clearance between the driving shaft and the driven shaft for connecting or disconnecting the driving shaft and the driven shaft by being fitted or disconnected to/from respective opposite surfaces. A switching mechanism is provided for selectively positioning the connecting/disconnecting members in a position in which the driving shaft and the driven shaft are connected and in a position in which the driving shaft and driven shaft are disconnected. A control unit is provided for supplying driving current to the switching mechanism by repeating continuous supply and supply by duty cycle control.

REFERENCES:
patent: 3300002 (1967-01-01), Roper
patent: 4937750 (1990-06-01), Gilliam
patent: 5620072 (1997-04-01), Engle
patent: 5839084 (1998-11-01), Takasaki et al.
patent: 6123183 (2000-09-01), Ito et al.
patent: 2001/0002629 (2001-06-01), Arai et al.
patent: 2001/0042652 (2001-11-01), Watson et al.
patent: 2002/0144851 (2002-10-01), Porter
patent: 62-25223 (1987-02-01), None
patent: 1-175528 (1989-07-01), None
patent: 8-216714 (1996-08-01), None

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