Elevator assembly with extendable sill
AssigneeOtis Elevator Company
InventorsRobin Mihekun Miller, Timothy P. Galante
Life of this patent
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Abstract
An elevator (20) includes a sill (38) that extends out from underneath an elevator car (30) to bridge an operating gap (26) between the car (30) and a landing (24). When an elevator door (34) is aligned with a landing door (36), the sill (38) extends outwardly from the car (30) until the sill (38) makes contact with a landing structure (40). A locking mechanism (52) securely locks the sill (38) to the landing structure (40). In one example, once proper sill alignment and locking engagement occurs, a door moving mechanism (50) is released and the elevator (34) and landing (36) doors open.
Claims22
An elevator assembly comprising
- an elevator door mounted for movement relative to a car frame;
- a sill supported by said car frame wherein said sill moves from a retracted position to an extended position and to decrease a space between said sill and a landing structure when said elevator door is initially aligned with a landing door;
- and
- a locking mechanism for selectively locking said sill to said landing structure near the landing door, a door moving mechanism that prevents the elevator door from moving from a closed position unless the sill is in the extended position and locked to the landing structure.
An elevator assembly comprising:
- an elevator door mounted for movement relative to a car frame;
- a sill supported by said car frame wherein said sill moves from a retracted position to an extended position and to decrease a space between said sill and a landing structure when said elevator door is initially aligned with a landing door;
- a locking mechanism for selectively locking said sill to said landing structure near the landing door, wherein said locking mechanism comprises an actuator, an arm having a hook portion, and a pin mounted to said landing structure wherein said actuator actuates said hook portion to selectively engage said pin to secure said sill to said landing structure;
- and
- a door moving mechanism having a lock position where said elevator door and landing door are prevented from opening and a release position where said elevator door and landing door are allowed to move from a closed position to an open position wherein said door moving mechanism does not switch to said release position until said hook portion securely engages said pin and said sill is in the extended position.
A method for opening an elevator door assembly comprising the steps of:
- aligning an elevator door with a landing door;
- and to decrease a space between said sill and said landing structure;
- locking the sill to the landing structure;
- and
- opening the elevator and landing doors subsequent to the locking and the extending of said sill.
A method for opening an elevator door assembly comprising the steps of
- aligning an elevator door with a landing door;
- and to decrease a space between said sill and said landing structure;
- locking the sill to the landing structure;
- and
- releasing a door moving mechanism only after the sill is securely locked to the landing structure and said sill is extended.
Dependencies are inferred from the claim text.