Electricity: motive power systems – Supplied or controlled by space-transmitted electromagnetic...
Patent
1996-07-03
1998-08-25
Cabeca, John W.
Electricity: motive power systems
Supplied or controlled by space-transmitted electromagnetic...
318640, 324 97, 323355, 323902, G05B 106
Patent
active
057986223
ABSTRACT:
A noncontacting power transfer apparatus, a noncontacting signal transfer apparatus and a separate machine apparatus that uses these couplers are disclosed. The power coupler is composed of a primary side and a secondary side that are fixed to a static unit and rotatable unit of the machine apparatus, respectively, such that its output does not vary with arbitrary rotation by the rotatable unit. The signal coupler is composed of receiving side portion having a electric-to-light conversion device that converts an electric signal to an optical signal of rotational symmetry relative to the axis of rotation of the rotatable unit and a photoelectric conversion device that converts an optical signal to an electric signal. Accordingly, the rotatable unit can be supplied with power from the static unit even while rotating, and moreover, can communicate with the static unit. Further, the rotatable unit can be easily attached to the static unit and can be removed from the static unit.
REFERENCES:
patent: 5055775 (1991-10-01), Scherz et al.
patent: 5347256 (1994-09-01), Yumiki et al.
Hamamoto Hiroyuki
Hiraga Yoshiji
Hirai Junji
Hirose Kenji
Nitta Yuji
Cabeca John W.
Kabushiki Kaisha Yaskawa Denki
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