Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1980-06-05
1982-02-02
Scherbel, David A.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
49120, B66B 1300
Patent
active
043135250
ABSTRACT:
The power operated sliding door of an elevator car is provided with a mechanical safety interlock which permits the car door to be moved more than a critical distance from its closed position only when the car is in a landing zone. A pivoted interlock hook on the car door has a normal position in which it engages an interlock lug on the car frame when the door moves the critical distance from closed position. A movable element on the car door is driven to move the hook to a clearance position relative to the interlock lug. Drive of the movable element occurs when it contacts an interengaging member on the hatch door as the car door first starts to move from closed position in a landing zone.
REFERENCES:
patent: 1326440 (1919-12-01), Chaudoir
patent: 1531428 (1925-03-01), Way
patent: 2067242 (1937-01-01), Norton
patent: 3659677 (1972-05-01), Shalders
patent: 3721319 (1973-03-01), Hall et al.
patent: 3912049 (1975-10-01), Holland et al.
Moline Accessories Corp., Form #211, p-13002 Interlock, Published after Apr. 14, 1970.
Moline Accessories Corporation, Form #161, "#104 Hatch Door Drive and Interlock Adjustment Data", (5-12-71), Revision of drawings first published in 1961.
Moline Accessories Company catalog sheet titled "Interlock and Retractible Mechanical Door Clutch", published in Jun. of 1970.
Montgomery Elevator Company
Noland Kenneth
Scherbel David A.
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