Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1981-10-06
1982-11-09
Skaggs, H. Grant
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
187 61, 187 57, 49 31, B66B 100
Patent
active
043579981
ABSTRACT:
Between floors or landings the elevator car door may be opened allowing passengers to open the hall door. To prevent this from occurring, a stop apparatus is attached to the car door and hall door. This apparatus allows the car door to only be opened to a certain minimum acceptable distance when the car is above a predetermined distance above the landing.
REFERENCES:
patent: 1838524 (1931-12-01), Brown
Gibson George W.
Mahon Joseph P.
McAulay John
Wolper Stanley M.
Greenstien Robert E.
Noland Kenneth
Otis Elevator Company
Skaggs H. Grant
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