"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
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| Number | Title | Issue Date |
| 7540356 | Method and apparatus to prevent or minimize the entrapment of passengers in elevators during a power failure The invention provides a system and method for handling power outages in a multiple car elevator system in a building having a plurality of floors. The system includes an energy calculator connected to the elevators, and determines a total energy of the elevator sys... | 06/02/2009 |
| 7261184 | Elevator system and triangulated support structure for the same The invention comprises a support structure for an elevator system comprising a pit channel module having a first leg and a second leg connected at a corner, a header module having three sides forming a triangle which is disposed in a horizontal plane above the pit ... | 08/28/2007 |
| 7246689 | Self-powered elevator button An elevator hall call device inductively receives an electrical signal from an interlock wiring circuit by means of a coupling device. The elevator hall call device comprises a capacitive device which stores electrical charge based on the electrical signal received ... | 07/24/2007 |
| 7246686 | Power supply for elevator systems having variable speed drives An improved system of variable speed drives that enhances the energy efficiency of an elevator system by enabling power transfer between the variable speed drives of two or more elevators via a common DC bus. Any combination of regenerative and non-regenerative vari... | 07/24/2007 |
| 7152715 | Snap-fit elevator hall fixture assemblies The present invention provides a snap-fit constructible elevator hall fixture assembly having a wall plate, a bezel, and a hall fixture. A snap-fit coupling attaches the wall plate to the bezel, and a snap-fit coupling attaches the hall fixture to the bezel. The fix... | 12/26/2006 |
| 7032715 | Methods and apparatus for assigning elevator hall calls to minimize energy use Energy saving methods and apparatus for elevator systems having a plurality of elevator cars operating in a plurality of elevator shafts. The present invention provides methods and apparatus for determining which one of the plurality of elevator cars is to be assign... | 04/25/2006 |
| 7032371 | Synthetic fiber rope for an elevator A synthetic rope for an elevator having improved resistance to compression and abrasion is provided and comprises a plurality of strands forming layers of the rope, each strand formed from a plurality of pre-twisted strands made from high modulus synthetic filaments... | 04/25/2006 |
| 7011184 | Increasing traffic handling performance of an elevator system based upon load A method and apparatus for utilizing unused power available in an elevator that is not fully loaded to improve the traffic handling capacity of an elevator system. The present invention can be used to provide an optimized velocity profile for the elevator based on t... | 03/14/2006 |
| 6966408 | Autobalance roping and drive arrangement An autobalancing roping and drive arrangement for elevators which continuously balances the weight of an elevator cab and the weight of a counterweight such that the force on the drive motor necessary to move the cab from floor to floor is minimized. A weighting dev... | 11/22/2005 |
| 6923065 | Apparatus for testing aramid fiber elevator cables An apparatus and method for inspecting and calculating the residual strength of an aramid fiber rope driving an elevator to determine when such rope is in need of replacement. The apparatus comprises a transmitter for introducing an acoustic wave that will travel al... | 08/02/2005 |
| 6854164 | Termination device for an aramid-based elevator rope A termination device for an aramid-based elevator rope comprises a socket having a tapered internal passageway adapted to receive a wedge and a rope. The passageway has first and second semi-cylindrical rope engaging surfaces. The wedge has a peripheral groove havin... | 02/15/2005 |
| 6845849 | Height adjustment clip for an elevator door A height adjustment assembly connecting an elevator door to an elevator door hanger comprises a door bracket, a plurality of door clip receiving sections and corresponding number of door clips. Each door clip comprises upper and lower fins, side fins, and an oblique... | 01/25/2005 |
| 6807893 | Jacket-assembly and method for protecting hydraulic elevator jacks A jacket-assembly is sealed to a hydraulic elevator jack to protect the jack from corrosion. The jacket-assembly is preferably manufactured from a non-galvanic, non-corrosive material. The jacket may be manufactured from any non-galvanic, non-corrosive material that... | 10/26/2004 |
| 6684573 | Elevator door sill assembly An elevator door sill assembly for use in elevator systems that have sliding doors. The door sill assembly comprises a sill plate, a support sill located below the sill plate having a rail that presents an inboard sliding surface and an outboard sliding s... | 02/03/2004 |
| 6672429 | Encoding system for communicating with elevator I/O devices An elevator system has a control processor which communicates with numerous I/O devices over a serial communications link. The processor is programmed to generate and receive data packets containing a 2-byte I/O identification field. The first byte is a g... | 01/06/2004 |
| 6668980 | Elevator car isolation system and method The isolation system and method comprise suspending an elevator platform from an upper portion of an elevator sling with upper tension members. In addition to being suspended from the sling by upper tension members, the elevator car platform may be secure... | 12/30/2003 |
| 6662660 | Apparatus for testing aramid fiber elevator cables The invention concerns an apparatus for inspecting and calculating the residual strength of an aramid fiber cable driving an elevator to determine when such cable is in need of replacement. The apparatus includes a transmitter for introducing an acoustic ... | 12/16/2003 |
| 6659514 | Swinging elevator hatchway door interlock An electromechanical interlock for a swinging elevator door is disclosed. The interlock comprises a pivotal hook member that may be attached to a swinging elevator door. The hook has a beak end and may pivot between a locked and an unlocked position. Disp... | 12/09/2003 |
| 6619434 | Method and apparatus for increasing the traffic handling performance of an elevator system A method and apparatus for utilizing unused power available in an elevator that is not fully loaded to improve the traffic handling capacity of an elevator system. The present invention can be used to provide an optimized velocity profile for the elevator... | 09/16/2003 |
| 6612404 | Contactless hall effect push button switch A programmable switching device that employs a Hall Effect sensor and a moving magnet is disclosed. The Hall Effect sensor is electrically connected to a programmable microprocessor that is programmed to detect changes in Hall Effect voltages at the senso... | 09/02/2003 |
| 6439349 | Method and apparatus for assigning new hall calls to one of a plurality of elevator cars The present invention provides a method and apparatus for use in elevator systems for assigning new hall calls to one of a plurality of available elevator cars. According to the invention, a call cost is calculated for each car for accepting the new hall ... | 08/27/2002 |
| 6427575 | Jacket-assembly and method for protecting hydraulic elevator jacks A jacket-assembly is sealed to a hydraulic elevator jack to protect the jack from corrosion. The jacket-assembly is preferably manufactured from a non-galvanic, non-corrosive material, such as high density polyethylene tubing. The jacket may be manufactur... | 08/06/2002 |