Electricity: motive power systems – Supplied or controlled by space-transmitted electromagnetic...
Patent
1999-07-21
2000-05-02
Ro, Bentsu
Electricity: motive power systems
Supplied or controlled by space-transmitted electromagnetic...
318468, 318286, 318266, 318480, 49 25, E06B 924, A47H 5032
Patent
active
060576588
ABSTRACT:
A wireless battery-operated window covering assembly is disclosed. The window covering has a head rail in which all the components are housed. These include a battery pack, an interface module including an IR receiver and a manual switch, a processor board including control circuitry, motor, drive gear, and a rotatably mounted reel on which lift cords wind and unwind a collapsible shade. The circuitry allows for dual-mode IR receiver operation and a multi-sensor polling scheme, both of which are configured to prolong battery life. Included among these sensors is a lift cord detector which gauges shade status to control the raising and lowering of the shade, and a rotation sensor which, in conjunction with internal registers and counters keeps track of travel limits and shade position.
REFERENCES:
patent: 4712104 (1987-12-01), Kobayashi
patent: 4956588 (1990-09-01), Ming
patent: 5134347 (1992-07-01), Koleda
patent: 5517094 (1996-05-01), Domel et al.
patent: 5642022 (1997-06-01), Sanz et al.
patent: 5675487 (1997-10-01), Patterson et al.
Colson Wendell B.
Gaudyn Erwin
Holford Michael S.
Jarosinski Marek
Kovach Joseph E.
Hunter Douglas Inc.
Ro Bentsu
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