This invention is directed to a self-propelled elevator system having multiple motors or one motor, and methods for synchronizing said multiple motors. This invention is also directed to an elevator brake system to be used in said self-propelled elevator system or other types of elevators to increase their level of safety.

A belt and sheave assembly for an elevator system includes a sheave having a plurality of tracking grooves laterally spaced across a sheave width, and a debris channel located in a tracking groove of the plurality of tracking grooves defining a radially inwardmost extent of the tracking groove. The assembly further includes a belt having a plurality of tension members arranged along a belt width and extending longitudinally along a length of the belt, a jacket at least partially enclosing the tension members, the jacket defining a side of the belt configured to interface with the sheave, and a plurality of tracking features extending from the side of the belt. The tracking features are laterally spaced across the belt width. Each tracking feature is configured to be received in a tracking groove, and each tension member is laterally offset from each of the tracking features.

An elevator installation may include at least one car that is displaceable in an elevator shaft; a first supply unit for supplying the car with energy, material, and/or data; and an interchange arrangement for interchanging the first supply unit to the car whereby the first supply unit is removed from or attached to the car during ongoing operation of the elevator installation. The interchange arrangement may be configured to remove and/or attached one or more supply units from the car during a regular door-opening cycle where the car stops at a floor of a building in which the elevator installation is installed. A duration of time required to remove the first supply unit from the car, or alternatively add the first supply unit to the car, is less than a duration of time required for a regular door-opening cycle.

An elevator installation may include at least one car that is displaceable in an elevator shaft; a first supply unit for supplying the car with energy, material, and/or data; and an interchange arrangement for interchanging the first supply unit to the car whereby the first supply unit is removed from or attached to the car during ongoing operation of the elevator installation. The interchange arrangement may be configured to remove and/or attached one or more supply units from the car during a regular door-opening cycle where the car stops at a floor of a building in which the elevator installation is installed. A duration of time required to remove the first supply unit from the car, or alternatively add the first supply unit to the car, is less than a duration of time required for a regular door-opening cycle.

A wireless power transmission system for use in an elevator system includes a power transmitting electrode unit including at least two power transmitting electrodes, and a power receiving electrode unit arranged on a carriage and including at least two power receiving electrodes for receiving electric power output from the at least two power transmitting electrodes. The power transmitting electrode unit is arranged so as to oppose at least a portion of the power receiving electrode unit when the carriage is at rest at a predetermined power-supplying floor and is extended in at least one of an upward direction and a downward direction. Electric power is transmitted from the power transmitting electrode unit to the power receiving electrode unit when the carriage is at rest at the power-supplying floor, when the carriage is accelerating off the power-supplying floor, and/or when the carriage is decelerating toward the power-supplying floor.

A wireless power transmission system for use in an elevator system includes a power transmitting electrode unit including at least two power transmitting electrodes, and a power receiving electrode unit arranged on a carriage and including at least two power receiving electrodes for receiving electric power output from the at least two power transmitting electrodes. The power transmitting electrode unit is arranged so as to oppose at least a portion of the power receiving electrode unit when the carriage is at rest at a predetermined power-supplying floor and is extended in at least one of an upward direction and a downward direction. Electric power is transmitted from the power transmitting electrode unit to the power receiving electrode unit when the carriage is at rest at the power-supplying floor, when the carriage is accelerating off the power-supplying floor, and/or when the carriage is decelerating toward the power-supplying floor.

An elevator end termination includes a base member including a proximal end and a distal end and defining an internal belt cavity opening at the proximal end of the base member, an elevator belt comprising an outer jacket and an internal load carrier of a substantially rectangular cross-section, wherein the internal load carrier is exposed on an end of the elevator belt, in which a portion of the elevator belt end is positioned in the belt cavity, and an adhesive provided in the belt cavity at least between opposite sides of the elevator belt and opposing interior walls of the base member, in which the elevator belt is adhesively bonded to the base member.

An electrode unit is used in a power transmitting device or a power receiving device of a wireless power transmission system based on an electric field coupling method. The electrode unit includes: a first electrode to which a first voltage is applied when power is transferred; a second electrode to which a second voltage antiphase to the first voltage is applied when power is transferred; and a third electrode spaced apart from the first and second electrodes, the third electrode having a third voltage whose amplitude is less than amplitudes of the first and second voltages when power is transferred. The first and second electrodes are arranged along an electrode installation plane. At least a portion of the third electrode does not overlap the first and second electrodes as viewed from a direction perpendicular to the electrode installation plane.

An elevator hoistway dimension measuring apparatus includes: a base that is mounted to a floor; a first arm that extends in a first direction from the base so as to penetrate inside a hoistway; a pair of second arms that extend from two sides of the base when viewed in the first direction, and that are respectively placed in contact with inner surfaces of a facing pair of jambs of a doorframe; a pair of third arms that extend parallel to the second arms beyond the jambs of the doorframe; and a three-dimensional coordinate measuring machine that is mounted to an end portion of the first arm to measure the hoistway three-dimensionally from inside the hoistway, whereby measuring time is shortened significantly, and safety is also improved.

An elevator hoistway dimension measuring apparatus includes: a base that is mounted to a floor; a first arm that extends in a first direction from the base so as to penetrate inside a hoistway; a pair of second arms that extend from two sides of the base when viewed in the first direction, and that are respectively placed in contact with inner surfaces of a facing pair of jambs of a doorframe; a pair of third arms that extend parallel to the second arms beyond the jambs of the doorframe; and a three-dimensional coordinate measuring machine that is mounted to an end portion of the first arm to measure the hoistway three-dimensionally from inside the hoistway, whereby measuring time is shortened significantly, and safety is also improved.