Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1986-09-08
1988-01-05
Shoop, Jr., William M.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
187130, 250221, B66B 300, G08B 536
Patent
active
047169923
ABSTRACT:
An improved operating panel device for an elevator system is disclosed which can be constructed with a limited depth, and which involves no mechanically operating parts at those portions which are to be manipulated by passengers, providing a substantially extended service life, and which is also durable and relatively immune to vandalism or rough operation by passengers. The operating panel device comprises: an indicator panel having a plurality of indication marks described thereon; a plurality of first light-emitting elements for emitting light signals which pass along a surface of the indicator panel across the indication marks; and a plurality of light-receiving elements for receiving the light signals from the first light-emitting elements whereby when at least one of the light signals emitted from the first light-emitting elements passing across a specific one of the indication marks on the indicator panel is selectively interrupted, the light-receiving elements detects such a selective interruption of the at least one light signal and sends out to an appropriate control system an operation command signal corresponding to the specific indication mark.
REFERENCES:
patent: 4042067 (1977-08-01), Mandel
patent: 4387367 (1983-06-01), Fisher
Duncanson Jr. W. E.
Mitsubishi Denki & Kabushiki Kaisha
Shoop Jr. William M.
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