Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 4376930 | Call signal conversion apparatus for elevator system A call signal conversion apparatus for an elevator system comprises a call button device as a serial connection of a call button and a call registration lamp; a control device as a computer for inputting a call signal given by actuation of the call button... | 03/15/1983 |
| 4288859 | Apparatus for placing in order the servicing sequence of storey calls of elevator systems An apparatus for placing in order the servicing sequence of storey calls of an elevator system, comprising storage elements for storing the storey calls, storage transmitter means for controlling the storage elements, a scanner for scanning the storage el... | 09/08/1981 |
| 4206438 | Elevator control circuit module A circuit for use with double riser elevator call systems having two sets of "up" and "down" elevator hall buttons per floor associated with respective signal lights. It comprises first and second substantially identical subcircuits each comprising a firs... | 06/03/1980 |
| 4195712 | Control system for a plurality of elevators A control system for use in conjunction with several elevators which are located close to one another and are controlled independently. The elevators are provided with a call button for each elevator door on each floor. After actuating one call button, al... | 04/01/1980 |
| 4191277 | Apparatus for transmitting control signals to elevators or the like An apparatus for transmitting control signals to a transportation installation, such as typically an elevator wherein a respective diode matrix codes the cabin and floor calls, and the outputs of which are connected by common call lines with the inputs of... | 03/04/1980 |
| 4149614 | Elevator system An elevator system including at least one elevator car mounted for movement in a building to serve the floors therein, and pushbuttons for entering calls for elevator service. Calls for elevator service initiated by the pushbuttons are visually displayed ... | 04/17/1979 |
| 4120381 | Elevator system An elevator system including an elevator car mounted in a building to serve the floors therein. A car call station in the elevator car includes a plurality of car call pushbuttons and associated lamps. Each pushbutton requires only a single set of contact... | 10/17/1978 |
| 4111284 | Elevator system An elevator system with an asynchronous-synchronous interface between the system processor and each car controller. Each interface includes a serially accessed memory which intermittently receives command words from the system processor. The serially acce... | 09/05/1978 |
| 4042067 | Elevator system An elevator system including an elevator car mounted for movement in a building to serve the floors therein, and a call entry and display station for registering calls for destination floors. The call entry panel includes a plurality of switches, and nota... | 08/16/1977 |
| 3952837 | Signaling system for an elevator An elevator system selectively moves and stops an elevator car at a plurality of landings in response to the operation of a signaling system wherein a controlled rectifier operates with a control circuit to command the stopping of an elevator car at a flo... | 04/27/1976 |
