...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7392884 | Elevator group management controller An elevator group supervisory control apparatus is obtained which can achieve efficient group supervisory control while preventing or reducing the possibility of collision and the safe stopping of an upper car and a lower car in one and the same shaft as much as pos... | 07/01/2008 |
| 7318501 | Elevator control apparatus with side mounted signal generating insert A control apparatus for an elevator installation has actuating elements on a front surface. The control apparatus includes an insert in the form of a key-operated switch cylinder which has a recess or a key slot. The insert is mounted in a side surface that is one o... | 01/15/2008 |
| 7213685 | Control device and control method for elevator An elevator control device which realizes, in a multi-car system, operation control superior in transportation efficiency. A first shunting device outputs a first shunting command for moving a car which has responded to a call request to a shunting floor. A blocked ... | 05/08/2007 |
| 7198136 | Elevator device for a multi-sky-lobby system An elevator system is provided with multiple sky lobbies to reduce the space required for elevator shafts and the space required for the entire elevator system, as well as the required elevator speed and motor capacity. Sky lobbies Ls1–Lsx | 04/03/2007 |
| 7083027 | Elevator group control method using destination floor call input A method controls the elevators in an elevator group when destination floor call input is used and the traffic within the elevator group is to be optimized. According to the concept of the method, based on traffic intensity, a cost function is optimized by changing ... | 08/01/2006 |
| 7025180 | Method of and device for controlling an elevator installation with zonal control A method of controlling an elevator installation having a plurality of cars in a building with floors subdivided into several zones wherein travel orders are allocated to the cars. There is no allocation to an elevator car, which has just been allocated a travel ord... | 04/11/2006 |
| 6976560 | Service/equipment equalization destination system for elevators An elevator car equalization computer program product includes software instructions for enabling a computer to perform predetermined operations, a computer readable medium bearing the software instructions, and a computer system including a processor and a memory. ... | 12/20/2005 |
| 6950813 | Fuzzy inference network for classification of high-dimensional data The present invention provides an improved method and system for training an on-line fuzzy inference network to generate a rule base, and a rule base generated thereby. Tuning and applying a learning rule to the fuzzy rules generated by the fuzzy inference network i... | 09/27/2005 |
| 6871727 | Elevator system with one or more cars moving independently in a same shaft The invention relates to an elevator system in tall buildings, the system having at least one first elevator shaft, which houses an elevator arranged to stop at floors called transfer levels, and at least one second elevator shaft, which houses elevators whose eleva... | 03/29/2005 |
| 6808049 | Optimal parking of free cars in elevator group control A method controls the distribution of free cars in an elevator system. First, the number of free cars in the elevator system are counted whenever this number changes. At the same time, the arrival/destination rates of passengers at each of the floor is determined. T... | 10/26/2004 |
| 6357553 | Elevator car access key switch A device for providing access to an elevator cab includes a key access switch that is useful to generate at least one signal indicating a desire to move a specified elevator cab to a specified landing within a building. A controller communicates with the ... | 03/19/2002 |
| 5767460 | Elevator controller having an adaptive constraint generator A group controller for controlling elevator cars in a building having a plurality of floors includes an elevator dispatcher for controlling the operation of the elevator cars during single source traffic conditions, the elevator dispatcher having a constr... | 06/16/1998 |
| 5663539 | Passenger transfer, double deck, multi-elevator shuttle system Double deck elevator cars (10-12) are moveable in corresponding adjacent overlapping hoistways (7-9). Passengers entering the bottom deck (39) from a ground landing are transferred into the bottom deck (47) of a second elevator as passengers in the upper ... | 09/02/1997 |
| 5644110 | Elevator service for dual lobby during up-peak An elevator system for up-peak servicing of a building having a dual lobby. The system includes a controller having an electronic processor coupled to a memory; a plurality of elevator cars controllably connected to the controller, a dual lobby routine st... | 07/01/1997 |
| 5511634 | Instantaneous elevator up-peak sector assignment Instantaneous car assignment is combined with sectoring for providing an elevator dispatching scheme in which, in response to a hall call registered at the lobby, a car not assigned to a sector and having the lowest remaining response time of all such car... | 04/30/1996 |
| 5480005 | Elevator swing car assignment to plural groups An elevator system has a low rise group of floors and a high rise group of floors and a swing car having doors and car call buttons enabling it to operate in either the low rise or high rise, the swing car being assignable to one or the other rise dependi... | 01/02/1996 |
| 5300739 | Cyclically varying an elevator car's assigned group in a system where each group has a separate lobby corridor Elevator swing cars 37 have doors 50 opening into a low rise lobby service corridor 31 and doors 51 opening into a medium rise lobby service corridor 32 with car panels 52 associated with the low rise group of floors (such as floors 1-13) and car panels 5... | 04/05/1994 |
| 5276295 | Predictor elevator for traffic during peak conditions A computer controlled elevator system (FIG. 1) including signal processing means for dynamically computing the population spread or density of the buildings, i.e., the number of elevator users in a building on a floor-by-floor basis, including the lobby, ... | 01/04/1994 |
| 5274202 | Elevator dispatching accommodating interfloor traffic and employing a variable number of elevator cars in up-peak Factors (IFL, UPK, DPK) indicative of the relative need for an elevator system to be operating in off-peak, up-peak and down-peak modes, respectively, are compared and if the relative need for up-peak is greater than for off-peak or down-peak, the ratio o... | 12/28/1993 |
| 5252789 | Using fuzzy logic to determine the traffic mode of an elevator system The traffic mode of an elevator system is set according to the number and frequency of passengers departing and arriving at a building lobby. The traffic mode is expressed as a fuzzy logic set having a term indicative of up peak mode, a term indicative of... | 10/12/1993 |
| 5241142 | "Artificial intelligence", based learning system predicting "peak-period" t i The present invention is directed to an elevator dispatching system for controlling the assignment of elevator cars. More particularly, the present invention is directed to a method of determining the commencement and/or conclusion of UP-PEAK and DOWN-PEA... | 08/31/1993 |
| 4930603 | Method and apparatus for serving the passenger traffic at a main floor of an elevator installation A method and apparatus for the control of the dispatch of elevator cars from the main floor are implemented in a plurality of algorithms performed by a process computer. A first algorithm for an elevator group receives data representing the measured arriv... | 06/05/1990 |
| 4926976 | Method and apparatus for the control of elevator cars from a main floor during up peak traffic A method and apparatus for the control of the dispatch of elevator cars from the main floor during up peak traffic conditions are implemented in an algorithm performed by a process computer. The algorithm for an elevator group, consisting of at least one ... | 05/22/1990 |
| 4846311 | Optimized "up-peak" elevator channeling system with predicted traffic volume equalized sector assignments An elevator system containing a group of elevator cars (1-4) and a group controller (32) having signal processing means (CPU) for controlling the dispatching of the cars from a main floor or lobby (L) in relation to different group parameters. During up-p... | 07/11/1989 |
| 4838384 | Queue based elevator dispatching system using peak period traffic prediction Elevator system with multiple cars (1-4) and a group controller (32) having signal processing means (CPU) controlling car dispatching from the lobby (L). During peak conditions (up-peak, down-peak and noontime), each car is dispatched and assigned to hall... | 06/13/1989 |
| 4804069 | Contiguous floor channeling elevator dispatching An elevator system contains a group of elevator cars. A group controller contains signal processing means for controlling the dispatching of the cars from a main floor or lobby in relation to different group parameters. During up-peak conditions, each car... | 02/14/1989 |
| 4792019 | Contiguous floor channeling with up hall call elevator dispatching An elevator system contains a group of elevator cars. A group controller contains signal processing means for controlling the dispatching of the cars from a main floor or lobby in relation to differnt group parameters. During up-peak conditions, each car ... | 12/20/1988 |
| 4735294 | Elevator group control for the distribution of traffic at a main floor A group elevator control wherein the calls entered by means of call registering devices at a main floor for desired destination floors are assigned to the next arriving or already present car, and indicated so that no doubts can arise for passengers, whos... | 04/05/1988 |
| 4691808 | Adaptive assignment of elevator car calls At a single floor of a building, such as at the lobby, destination calls are entered via a destination call entry device touch pad such as a (12) so that overall system response can be optimized during up-peak service intervals. A maximum number of calls ... | 09/08/1987 |
| 4523665 | Control apparatus for elevators A control apparatus for elevators in which one cycle of a fluctuating demand is divided into a plurality of sections, the demand in each section or a service condition value of the elevators for the demand is measured, the demand or the service condition ... | 06/18/1985 |
| 4499973 | Transportation system A transportation system including a group of elevator cars under the control of a group supervisory dispatcher function, and people mover apparatus arranged to serve the group of elevator cars. The group supervisory dispatcher function includes call assig... | 02/19/1985 |
| 4499975 | Control apparatus for elevators A control apparatus for elevators in which one cycle of a fluctuating demand is divided into a plurality of sections, the demand in each section or a service condition value of the elevators for the demand is measured, the demand or the service condition ... | 02/19/1985 |
| 4431086 | Elevator system An elevator system having a plurality of elevator cars under group supervisory control. An auxiliary dispatching control is connected to the existing telephone system of the building, arranged to enable callers to have cars dispatched to predetermined flo... | 02/14/1984 |
| 4084661 | Elevator system An elevator system, and method of operating same, including a plurality of elevator cars mounted in a building to serve the floors therein. A system processor, having instructions stored in a memory, responds to predetermined system information to provide... | 04/18/1978 |