Patent application number | Description | Published |
20100155184 | ELEVATOR HAVING A SHALLOW PIT AND/OR A LOW OVERHEAD - The elevator has a car movable vertically within a shaft between lower and upper end positions and a drive system coupled to a traction system for controlling movement of the car. A limit switch which is open when the car is in a selected distance range from one of the end positions. The limit switch forms part of a power line supplying power to the drive system for controlling movement of the car in a direction towards that end position in an inspection operation. Thus movement of the car is prevented only in that direction when the car is in the selected distance range in an inspection operation. | 06-24-2010 |
20100163346 | SAFETY DEVICE FOR SECURING MINIMUM SPACES AT THE TOP OR BOTTOM OF AN ELEVATOR SHAFT BEING INSPECTED, AND ELEVATOR HAVING SUCH SAFETY DEVICES - The safety device for an elevator system comprises a retractable element mounted on a support. The retractable element has a stopping position in which a catch portion of the retractable element projects from the support to engage a triggering member of a safety brake associated with an elevator car as the elevator car traveling in a selected direction approaches a selected vertical position, and a retracted position. An actuator selectively controls the position of the retractable element. A position sensor is responsive to the position of the retractable element to make sure that it is in its stopping position when needed. | 07-01-2010 |
20110048863 | SINGLE BRAKESHOE TEST (ELECTRICAL) FOR ELEVATORS - A control arrangement ( | 03-03-2011 |
20110253483 | ELEVATOR DOOR FRAME WITH ELECTRONICS HOUSING - An exemplary enclosure for housing electronics useful with an elevator system includes a first sidewall and a second sidewall adjacent the first sidewall. A third sidewall is at an oblique angle relative to the first sidewall. The third sidewall provides a support surface for supporting electronics inside the enclosure. The first and second sidewalls are moveable relative to the third sidewall to provide a single opening facing the support surface. | 10-20-2011 |
20120175193 | ELEVATOR HAVING A SHALLOW PIT AND/OR A LOW OVERHEAD - The elevator has a car movable vertically within a shaft between lower and upper end positions and a drive system coupled to a traction system for controlling movement of the car. A limit switch which is open when the car is in a selected distance range from one of the end positions. The limit switch forms part of a power line supplying power to the drive system for controlling movement of the car in a direction towards that end position in an inspection operation. Thus movement of the car is prevented only in that direction when the car is in the selected distance range in an inspection operation. | 07-12-2012 |
20140284144 | SINGLE BRAKESHOE TEST (ELECTRICAL) FOR ELEVATORS - An example elevator brake includes a first braking member that is biased by a first spring member into engagement with a braking surface. The first braking member includes a first armature arranged to be actuated by an electromagnetic actuator to disengage the first braking member from the braking surface against the biasing force of the first spring member. A second braking member is biased by a second spring member into engagement with a braking surface. The second braking member includes a second armature arranged to be actuated by an electromagnetic actuator to disengage the second braking member against the biasing force of the second spring member. A first electromagnetic actuator actuates the first armature and a second electromagnetic actuator actuates the second armature. | 09-25-2014 |