Unlocking device, elevator system having an unlocking device, and method for actuating an unlocking device
AssigneeInventio AG
InventorsChristian Studer, Raphael Bitzi
Life of this patent
Estimating the term…
Abstract
An unlocking device with an actuator releases a safety cover of a maintenance opening for opening. The locking device has a safety circuit for actuating the actuator. The safety circuit includes at least one first switching contact and a second switching contact arranged in series, wherein the actuator in a closed state of the first and the second switching contacts is connected by the safety circuit with a power source, and the first switching contact can be switched by a control unit. One or more of the unlocking device can be used in an elevator system.
Claims14
1-12. (canceled)
An unlocking device for releasing a safety cover of a maintenance opening, comprising:
- an actuator for releasing the safety cover;
- a safety circuit for activating the actuator, the safety circuit including a first switching contact arranged in series with a second switching contact, wherein the actuator in a closed state of the first switching contact and the second switching contact is connected by the safety circuit with a power source to activate the actuator;
- and
- a control unit for switching the first switching contact to the closed state.
An elevator system with an elevator car that travels in an elevator shaft, a safety cover that covers a maintenance opening, and an unlocking device for releasing the safety cover, comprising:
- an actuator for releasing the safety cover;
- a power source for activating the actuator;
- a first switching contact;
- a control unit for switching the first switching contact to a closed state;
- a second switching contact connected in series with the first switching contact between the actuator and the power source;
- and
- an actuation device for manually switching the second switching contact to a closed state whereby the actuator is activated to release the safety cover when the first switching contact and the second switching contact are both in the closed state.
An unlocking device for releasing a safety cover of a maintenance opening in an elevator system, comprising:
- a first actuator for releasing a first safety cover;
- a second actuator for releasing a second safety cover
- a safety circuit for activating each of the first actuator and the second actuator;
- the safety circuit including a first switching contact arranged in series with a first second switching contact, wherein the first actuator in a closed state of the first switching contact and the first second switching contact is connected by the safety circuit with a power source to activate the first actuator;
- the safety circuit including the first switching contact arranged in series with a second second switching contact, the first second switching contact and the second second switching contact being arranged in parallel, wherein the second actuator in a closed state of the first switching contact and the second second switching contact is connected by the safety circuit with a power source to activate the second actuator;
- and
- a control unit for switching the first switching contact to the closed state.
Dependencies are inferred from the claim text.