Electrical transmission or interconnection systems – Switching systems – Plural switches
Reexamination Certificate
2007-10-16
2007-10-16
Sherry, Michael (Department: 2836)
Electrical transmission or interconnection systems
Switching systems
Plural switches
C307S127000, C246S220000, C246S224000, C246S253000
Reexamination Certificate
active
10836717
ABSTRACT:
A manual switch remote controller is adapted for use with a power switch machine to electrically and selectively move switch points of a track switch between a normal position and a reverse position from a remote location in the field. In one preferred embodiment, the manual switch remote controller includes a first switch for selectively connecting and disconnecting a first source of DC operating power from first and second input terminals to first and second output terminals which are coupled to respective first and second input operating terminals of a biased-neutral controller. A second switch is used for selectively connecting and disconnecting a second source of DC controlling power from third and fourth input terminals to third and fourth output terminals which are coupled to respective third and fourth input control terminals of the biased-neutral controller. Third and fourth switches are used for selectively connecting the first source of DC operating power from the first and second input terminal, when momentarily actuated, to the third and fourth output terminals with first and second polarities so as to cause the biased-neutral controller to energize either the reverse or normal field winding of the DC motor in order to electrically and selectively move the switch points between the normal and reverse positions.
REFERENCES:
patent: 3552692 (1971-01-01), Horeczky
patent: 5504405 (1996-04-01), Hager
patent: 5806809 (1998-09-01), Danner
patent: 6484974 (2002-11-01), Franke et al.
Chin Davis
Rutland-Wallis Michael
Sherry Michael
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