Electricity: motive power systems – Automatic and/or with time-delay means – Radiant energy
Patent
1989-12-22
1991-02-26
Ro, Bentsu
Electricity: motive power systems
Automatic and/or with time-delay means
Radiant energy
318283, 318285, 49 25, 49 31, E05F 1520
Patent
active
049964674
ABSTRACT:
A garbage container is disclosed, which will open automatically when a user is present in front of the container and will close after a predetermined time of the departure of the user. This garbage container comprises an infrared ray transmitter and an infrared ray receiver to detect the presence of a user.
REFERENCES:
patent: 4552061 (1985-11-01), Brutsman
Keller Michael L.
Ro Bentsu
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