Abstract:
A manually operable switch in which the operating force is dissipated after operation so that the switch is restored to an unoperated condition from which it is again capable of operation, notwithstanding the pressure which generated the operating force continues to be applied to the switch.
Abstract:
Improved solid state control systems for elevators in which the solid state components are mounted on printed circuit boards, the conductor paths of which interconnect the components of each individual board and connect them to circuit terminals which enable the connections of various components on different boards to each other. A first plurality of printed circuit boards whose components are properly interconnected provides basic control circuitry for one elevator car operating in a single car system. When appropriately connected to the control equipment associated with its car so as to receive control signals therefrom this circuitry operates in response to such signals in a predetermined manner to control its car according to a particular mode of operation. Included among the conductor paths on the circuit boards of this first plurality and connected between circuit terminals and solid state components thereof are a number of paths which are unnecessary to the operation of the basic control circuitry. These enable the connection of auxiliary equipment to the basic control circuitry which causes that circuitry to operate differently in response to the control signals it receives from the associated control equipment even though the interconnections between the components of the basic control circuitry and the connection between it and the associated control equipment remain unaltered. The printed circuit boards employed in supervisory control systems for groups of elevator cars possess a similar such universal character.
Abstract:
AN CONVEYOR CONTROL SYSTEM FOR A GROUP OF CARS IN WHICH THE CARS RESPOND TO CALLS FOR SERVICE IN ACCORDANCE WITH THE RELATIONSHIP BETWEEN THE WORK LOAD OF EACH INFIVIDUAL CAR AND THE AVERAGE OF THE WORK LOADS OF ALL THE CARS IN THE GROUP. THE WORK LOAD OF A CAR PREFERABLY IS EXPRESSED IN TERMS OF THE PERFORMANCE TIME SEPARATING IT FROM THE CAR IMMEDIATELY AHEAD OF IT IN A PRESCRIBED WAY OF TRAVEL AND IS A FUNCTION OF BOTH THE DISTANCE BETWEEN IT AND THE CAR IMMEDIATELY AHEAT OF IT AND THE NUMBER OF LANDINGS BETWEEN THEM AT WHICH THE CAR IN QUESTION WILL ANSWER CALLS FOR SERVICE. IF THE WORK LOAD OF ANY CAR IS LESS THAN THE AVERAGE THE CAR IMMEDIATELY AHEAD OF IT IS ENABLED TO BYPASS WITHOUT STOPPING AT THOSE LANDINGS AT WHICH IT OTHERWISE WOULD IN ANSWER TO CALLS. IF THE COM-
BINED WORK LOADS OF ANY ONE CAR AND THE CAR IMMEDIATELY BEHIND IT ARE LESS THAN THE AVERAGE, THAT ONE CAR IS AVAILABLE AND WILL OPERATE TO PROVIDE-DIRECT SERVIVE TO A SELECTED ONE OF THE HALL CALLS IN REGISTRATION.
Abstract:
An arrangement for an elevator control system employing a power amplifier for supplying excitation current to a dynamo winding for controlling the speed of the elevator car wherein the magnitude of the current of both polarities which the amplifier is capable of supplying is limited in response to the approach of the car to a predetermined distance of a landing at which it is stopping and wherein only the limitation for one polarity is removed in response to the generation of a signal to start in a direction corresponding to that one polarity.
Abstract:
A DOOR COUPLING APPARATUS FOR AN ELEVATOR SYSTEM FOR COUPLING AND DRIVING AN ELEVATOR CAR DOOR AND A HOISTWAY DOOR OF AN ELEVATOR SYSTEM FOR SIMULTANEOUS MOVEMENT OF THE DOORS BETWEEN OPEN AND CLOSED POSITIONS. THE DOOR COUPLING APPARATUS INCLUDES A VANE ASSEMBLY, WHICH IS MOUNTED ON THE CAR DOOR COUPLING THE HOISTWAY DOOR THERETO, AND INCLUDES AN ELONGATE LINK ASSEMBLY WHICH HAS ONE END THEREOF CONNECTED TO THE VANE ASSEMBLY WHICH URGING THE VANE ASSEMBLY TO COUPLE THE DOORS AND FOR LATCHING THE VANE ASSEMBLY AFTER THE DOORS ARE COUPLED TOGETHER. THE DOOR COUPLING APPARTUS ALSO INCLUDES A DOOR OPERATING MECHANISM WHICH IS CONNECTED TO THE OTHER END OF THE LINK ASSEMBLY FOR DRIVING THE COUPLED DOORS BETWEEN THE OPEN AND CLOSED POSITIONS. THE DOOR COUPLING APPARATUS ALSO INCLUDES A RELEASING MEMBER ARRANGED TO ENGAGE THE LINK ASSEMBLY AFTER THE COUPLED DOORS REACH THE CLOSED POSITION FOR UNLATCHING THE VANE ASSEMBLY AND FOR UNCOUPLING THE DOORS IN THE CLOSED POSITION.