Abstract

A sliding door drive system may include a drive axle and at least one idler axle spaced a part and parallel to each other. The sliding door drive system may further include a first pair of gears having a first radius, each of which is coupled to a different one of the drive axle and the at least one idler axle. The sliding door drive system may further include a second pair of gears having a second radius larger than the first radius. The sliding door drive system may further include a first drive belt coupled between the first pair of gears, and a second drive belt coupled between the second pair of gears. The sliding door drive system may further include a first door bracket coupled to the first drive belt and a second door bracket coupled to the second drive belt.

IPC Classes  ?

• E05F 15/643 - Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings operated by flexible elongated pulling elements, e.g. belts, chains or cables
• E05F 17/00 - Special devices for shifting a plurality of wings operated simultaneously

Abstract

A sliding door drive system may include a drive axle and at least one idler axle spaced a part and parallel to each other. The sliding door drive system may further include a first pair of gears having a first radius, each of which is coupled to a different one of the drive axle and the at least one idler axle. The sliding door drive system may further include a second pair of gears having a second radius larger than the first radius. The sliding door drive system may further include a first drive belt coupled between the first pair of gears, and a second drive belt coupled between the second pair of gears. The sliding door drive system may further include a first door.

IPC Classes  ?

• E05F 17/00 - Special devices for shifting a plurality of wings operated simultaneously
• E05F 15/643 - Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings operated by flexible elongated pulling elements, e.g. belts, chains or cables
• E05D 15/06 - Suspension arrangements for wings for wings sliding horizontally more or less in their own plane

Abstract

Systems and methods for monitoring the bottom of the doors to an elevator to increase safety in and around the elevator cab and prevent dangerous conditions when a hallway or cab door to the elevator is damaged, loose, misaligned, or malfunctioning.

IPC Classes  ?

• B66B 13/14 - Control systems or devices
• B66B 13/02 - Door or gate operation
• G01S 17/04 - Systems determining the presence of a target
• G01S 17/48 - Active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves
• G01S 17/06 - Systems determining position data of a target
• G01S 17/66 - Tracking systems using electromagnetic waves other than radio waves

Abstract

Systems and methods for monitoring the bottom of the doors to an elevator to increase safety in and around the elevator cab and prevent dangerous conditions when a hallway or cab door to the elevator is damaged, loose, misaligned, or malfunctioning.

IPC Classes  ?

• B66B 13/22 - Operation of door or gate contacts
• B66B 1/34 - Control systems of elevators in general Details
• G01K 3/00 - Thermometers giving results other than momentary value of temperature
• G01V 8/14 - Detecting, e.g. by using light barriers using one transmitter and one receiver using reflectors

Abstract

An elevator level warning system is provided, along with methods of use thereof. An elevator level warning system may include a controller, a laser, a sensor, and a reflector. The reflector may be a structured reflector. The elevator level warning system may also include a sensor board. The elevator level warning system may also include an indicator. The elevator level warning system may be used with an elevator system. The elevator level warning system may be used to detect that-and/or warn users that-a front cab-floor edge and a landing plane are misaligned and have a drop between them of greater than a threshold distance.

IPC Classes  ?

• B66B 1/34 - Control systems of elevators in general Details
• B66B 5/02 - Applications of checking, fault-correcting or safety devices in elevators responsive to abnormal operating conditions

Abstract

An elevator pit safety system is provided, along with methods of use thereof. An elevator pit safety system may include a control system, an emergency stop switch, and a power switch. The emergency stop switch may be configured to stop an elevator cab. The power switch may be configured to operate a lighting system. The control system may prevent either from being used without the other. The elevator pit safety system may be configured to allow overriding the safety features.

IPC Classes  ?

• B66B 5/00 - Applications of checking, fault-correcting or safety devices in elevators
• B66B 3/00 - Applications of devices for indicating or signalling operating conditions of elevators

Abstract

A power supply circuit for powering components of a facility are disclosed. The power supply circuit may include a power transformer, a power input terminal, a power output terminal, a bridge, a relay, and a control circuit. The relay is connected between the power input terminal and the power output terminal. A primary side of the power transformer is coupled between the relay and the power output terminal. The bridge is coupled to the secondary side of the power transformer. In a normal power mode, the control circuit closes the relay and operates the bridge as a rectifier. In an emergency power mode, the control circuit opens the relay and operates the bridge as a pulse width modulator. In this manner, the bridge and the power transformer can be used both to charge a battery during normal operation and generate emergency AC power from the battery.

IPC Classes  ?

• H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
• H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
• H02M 7/219 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
• H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
• H02M 7/5395 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation

Goods & Services

Elevator electronic components, namely, controllers, microprocessors, circuit boards, door controllers and electronic door edge sensors; Elevator parts; industrial motor controls, namely, electronic controls for industrial motors comprised of safety switches and signaling devices Electric lights for elevators and lighting assembly for elevators; LED (light emitting diode) lighting fixtures; Lighting fixtures; Electric lighting fixtures, namely, power failure backup safety lighting

Goods & Services

Elevator electronic components, namely, controllers, microprocessors, circuit boards, door controllers and electronic door edge sensors; Elevator parts; industrial motor controls, namely, electronic controls for industrial motors comprised of safety switches and signaling devices Electric lights for elevators and lighting assembly for elevators; LED (light emitting diode) lighting fixtures; Lighting fixtures; Electric lighting fixtures, namely, power failure backup safety lighting

Goods & Services

LED (light emitting diode) lighting fixtures; Lighting fixtures

Goods & Services

elevator electronic components, namely controllers, microprocessors, circuit boards, door controllers and electronic door edge sensors