Electricity: motive power systems – Automatic and/or with time-delay means – Radiant energy
Patent
1996-12-09
1998-10-06
Cabeca, John W.
Electricity: motive power systems
Automatic and/or with time-delay means
Radiant energy
32420717, 324 97, 324166, 318640, 318 16, 359109, 359159, G05B 500
Patent
active
058181881
ABSTRACT:
A noncontacting power transfer apparatus, a noncontacting signal transfer apparatus, to be referred to below as a power coupler and a signal coupler, respectively, 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 remove from the static unit.
REFERENCES:
patent: 4641071 (1987-02-01), Tazawa et al.
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patent: 5304899 (1994-04-01), Sasaki et al.
patent: 5323001 (1994-06-01), Igaki 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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