Abstract: An electric machine includes a rotor including a plurality of permanent magnets. The rotor is rotatable about a central axis of the machine. The machine further includes a stator having a stator hub and a plurality of stator windings positioned at the stator hub and located radially inboard of the plurality of permanent magnets. A plurality of fins extend radially inwardly from an inner surface of the stator hub.

Abstract: Embodiments are directed an elevator machine comprising: a stator assembly, and a plurality of support plates coupled to the stator assembly, wherein a respective at least one of the support plates is coupled on each end of the stator assembly and configured to enable the stator assembly to expand radially and axially in a substantially uniform manner over a range of temperatures.

Abstract: A braking system for an elevator includes a brake disc and one or more sets of brake calipers interactive with the brake disc. A hydraulic brake unit is operably connected to the one or more brake calipers. The hydraulic brake unit includes one or more valves to control hydraulic fluid flow during engagement of the brake calipers to the brake disc. An elevator includes a car, one or more sheaves, and a suspension member connected to the car and routed over the sheaves. A machine drives motion of the elevator car. A braking system located at the machine includes a brake disc and one or more brake calipers. A hydraulic brake unit is operably connected to the brake calipers and includes one or more valves to control hydraulic fluid flow during engagement of the brake calipers to the brake disc.

Abstract: An elevator machine comprises a motor, a sheave, and a bearing system supporting the sheave for rotation about an axis. The bearing system comprises: an inner sleeve; an inner race mounted to the inner sleeve; a housing; an outer race mounted to the housing; one or more circumferential arrays of rolling elements between the inner race and the outer race; and a shield. The shield comprises a hub secured to the sleeve and a radially outwardly open channel at least along a portion of the shield.

Abstract: An electric machine includes a rotor including a plurality of permanent magnets. The rotor is rotatable about a central axis of the machine. The machine further includes a stator having a stator hub and a plurality of stator windings positioned at the stator hub and located radially inboard of the plurality of permanent magnets. A plurality of fins extend radially inwardly from an inner surface of the stator hub.

Abstract: Embodiments are directed an elevator machine comprising: a stator assembly, and a plurality of support plates coupled to the stator assembly, wherein a respective at least one of the support plates is coupled on each end of the stator assembly and configured to enable the stator assembly to expand radially and axially in a substantially uniform manner over a range of temperatures.

Abstract: An elevator motor assembly includes a motor for driving an elevator, a temperature sensor for detecting a temperature of the motor and a blower configured to blow air onto the motor to cool the motor, and configured to blow air at varying speeds that vary according to a temperature detected by the temperature sensor.

Abstract: Embodiments are directed reducing the size of an elevator machine by establishing an envelope associated with a sheave of the machine, and recessing at least one bearing associated with the machine at least partially within the envelope. Embodiments are directed to an elevator machine comprising a motor, a sheave, and a plurality of bearings recessed at least partially within an envelope of at least one of the motor and sheave.

Abstract: A braking system for an elevator includes a brake disc and one or more sets of brake calipers interactive with the brake disc. A hydraulic brake unit is operably connected to the one or more brake calipers. The hydraulic brake unit includes one or more valves to control hydraulic fluid flow during engagement of the brake calipers to the brake disc. An elevator includes a car, one or more sheaves, and a suspension member connected to the car and routed over the sheaves. A machine drives motion of the elevator car. A braking system located at the machine includes a brake disc and one or more brake calipers. A hydraulic brake unit is operably connected to the brake calipers and includes one or more valves to control hydraulic fluid flow during engagement of the brake calipers to the brake disc.

Abstract: An exemplary bearing cartridge assembly includes an inner sleeve. An outer housing is supported for rotation relative to the inner sleeve. A bearing member within the outer housing and received about the inner sleeve facilitates rotation of the outer housing relative to the inner sleeve. The bearing member has an axial dimension (e.g., a width) that is smaller than an axial inner dimension of the outer housing. The bearing member is positioned relative to the inner sleeve and the outer housing to provide a first lubricant space between one side wall of the outer housing and the bearing member and a second lubricant space between an opposite side wall of the outer housing and the bearing member. There is at least one through passage between the first and second lubricant spaces to allow lubricant to move between them.

Abstract: A roller assembly includes a frame (16) defining a doorway (14). A rail (32), which includes at least one supporting surface along at least one side of the rail, is secured to the frame (16). At least one roller (38), which is adapted to roll along the supporting surface of the rail (32), has a tire material (68) that contacts the rail (32). A thermal barrier (62, 70, 72, 76, 80) is positioned to inhibit heat transfer from the rail (32) to the tire material (68).

Abstract: An exemplary bearing cartridge assembly includes an inner sleeve. An outer housing is supported for rotation relative to the inner sleeve. A bearing member within the outer housing and received about the inner sleeve facilitates rotation of the outer housing relative to the inner sleeve. The bearing member has an axial dimension (e.g., a width) that is smaller than an axial inner dimension of the outer housing. The bearing member is positioned relative to the inner sleeve and the outer housing to provide a first lubricant space between one side wall of the outer housing and the bearing member and a second lubricant space between an opposite side wall of the outer housing and the bearing member. There is at least one through passage between the first and second lubricant spaces to allow lubricant to move between them.

Abstract: A drive machine (10) for elevators has a rotatable drive sheave (18) that has an inner surface and an outer surface with at least one groove (34) for receiving a hoist rope. A rotor (36) is attached to the inner surface of the sheave (18). A stator (38) is connected to a fixed hollow shaft (22), wherein the stator (38), rotor (36), and drive sheave (18) are concentrically positioned about a centerline of the fixed hollow shaft (22). A plurality of bearings (42) are placed between the shaft (22) and rotor (36).

Abstract: A roller assembly includes a frame (16) defining a doorway (14). A rail (32), which includes at least one supporting surface along at least one side of the rail, is secured to the frame (16). At least one roller (38), which is adapted to roll along the supporting surface of the rail (32), has a tire material (68) that contacts the rail (32). A thermal barrier (62, 70, 72, 76, 80) is positioned to inhibit heat transfer from the rail (32) to the tire material (68).

Abstract: In an elevator sheave for a flat belt, hard, thin surface plating can be applied to enhance durability while maintaining traction.

Abstract: A hoist machine is provided for an elevator system that includes an elevator car and a rope, connected to the elevator car and by which the elevator car is hoisted. The output shaft of the machine motor carries a traction sheave for frictionally engaging and moving the rope, and at least two bearings support and guide the output shaft. When viewed axially, the profile of the traction sheave can be circumscribed by a profile of the bearings. The traction sheave and the output shaft can be of integral, unitary construction. The machine can also include a unitary bearing frame, having a pair of openings aligned with one another for respectively receiving and supporting one of the bearings. During assembly, the traction sheave can be inserted through one of the openings of the bearing frame.

Abstract: In an elevator sheave for a flat belt, hard, thin surface plating can be applied to enhance durability while maintaining traction.

Abstract: A hoist machine is provided for an elevator system that includes an elevator car and a rope, connected to the elevator car and by which the elevator car is hoisted. The output shaft of the machine motor carries a traction sheave for frictionally engaging and moving the rope, and at least two bearings support and guide the output shaft. When viewed axially, the profile of the traction sheave can be circumscribed by a profile of the bearings. The traction sheave and the output shaft can be of integral, unitary construction. The machine can also include a unitary bearing frame, having a pair of openings aligned with one another for respectively receiving and supporting one of the bearings. During assembly, the traction sheave can be inserted through one of the openings of the bearing frame.