Method of controlling access to an elevator car
First Claim
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1. A method of controlling access to an elevator car, comprising the steps of:
- unlocking or opening a landing door of an elevator shaft in which the car is running; and
switching an elevator control into a maintenance mode, the switching causing the car to travel to a predetermined stop position of a selected floor, which predetermined stop position is a position wherein a floor of the elevator car and a floor of the landing are not coplanar, the predetermined stop position permitting access to at least one of a roof and an underside of the elevator car from the selected floor, the elevator control being switched into said maintenance mode by;
first, unlocking or opening the landing door; and
second, operating a landing call receiving means in a predetermined identification pattern which differs from a call pattern for calling the elevator in normal elevator operation, the landing call receiving means and the landing door located at the selected floor, the predetermined stop position based on the selected floor.
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Abstract
A method of controlling access to an elevator car, in particular to its roof and/or underside, including the steps of switching the elevator control into a maintenance mode which controls the car to travel to a predetermined stop position permitting access, and opening a landing door of the elevator shaft the car is running in. The elevator control is switched into the maintenance mode only if operating a landing call receiving device in a predetermined identification pattern which differs from a call pattern for calling the elevator.
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Citations
11 Claims
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1. A method of controlling access to an elevator car, comprising the steps of:
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unlocking or opening a landing door of an elevator shaft in which the car is running; and switching an elevator control into a maintenance mode, the switching causing the car to travel to a predetermined stop position of a selected floor, which predetermined stop position is a position wherein a floor of the elevator car and a floor of the landing are not coplanar, the predetermined stop position permitting access to at least one of a roof and an underside of the elevator car from the selected floor, the elevator control being switched into said maintenance mode by; first, unlocking or opening the landing door; and second, operating a landing call receiving means in a predetermined identification pattern which differs from a call pattern for calling the elevator in normal elevator operation, the landing call receiving means and the landing door located at the selected floor, the predetermined stop position based on the selected floor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification