Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 8069955 | Elevator and traction sheave of an elevator An elevator may include an elevator car, a counterweight, a set of hoisting ropes, and one or more rope pulleys. The car and counterweight may be suspended on the hoisting ropes. At least one rope pulley may include a solid surface including a plurality of rope groo... | 12/06/2011 |
| 8020669 | Elevator and traction sheave of an elevator An elevator may include an elevator car, counterweight, set of hoisting ropes, and one or more rope pulleys. The elevator car and counterweight may be suspended on the set of hoisting ropes. The one or more rope pulleys may be provided with one or more rope grooves.... | 09/20/2011 |
| 7775325 | Drive for an elevator installation and method of converting a drive in an elevator installation A modular drive for an elevator installation and a method of converting and fastening the drive in the elevator installation includes combining the main drive components such as a drive device, a brake device and a drive pulley into a drive module. Connecting parts ... | 08/17/2010 |
| 7757818 | Drive motor for an elevator installation and method of mounting a drive motor The invention relates to an elevator installation and a method for mounting a drive unit of an elevator installation. The elevator installation comprises a car and a counterweight in a shaft and a drive unit mounted on a crossbeam or the shaft roof. The drive unit h... | 07/20/2010 |
| 7712584 | Emergency braking for an elevator without counterweight An elevator without counterweight may Include an elevator car suspended by a hoisting rope, a traction sheave operatively connected to the elevator car by the hoisting rope, and a brake structure configured to engage with the traction sheave in a braking operation i... | 05/11/2010 |
| 7562744 | Method for installing an elevator, and elevator delivery assembly An elevator is provided comprising a number of diverting pulleys in the upper part of an elevator shaft or equivalent, a number of diverting pulleys in the lower part of the elevator shaft and a number of diverting pulleys on the elevator car. In various embodiments... | 07/21/2009 |
| 7461721 | Elevator and traction sheave of an elevator An elevator hoisting rope set (3) suspends a counterweight (2) and an elevator car (1). The elevator has one or more rope pulleys provided with rope grooves, one of said rope pulleys being a traction sheave (7) that moves the hoisting rop... | 12/09/2008 |
| 7428950 | Low overhead machine roomless elevator configuration A drive arrangement for an elevator car and a machine roomless elevator incorporates a machine (26) having a drive sheave (27) extending along an axis parallel to the axes of the deflection sheaves (23, 25) associated with both the counter-weigh... | 09/30/2008 |
| 7419033 | Emergency brake device for elevator An emergency brake device for an elevator includes a brake shoe portion provided inside a sheave 1 or deflector sheave of an elevator and having a brake shoe 5a at a lower end of the brake shoe portion, the brake shoe generating a braking force ... | 09/02/2008 |
| 7383921 | Elevator with a support for a hoisting machine An elevator including a car placed in an elevator shaft so as to move vertically along a pair of car guide rails, and a counterweight placed in the elevator shaft so as to move vertically along a pair of counterweight guide rails. A rope connects the car and the cou... | 06/10/2008 |
| 7377366 | Sheave assembly for an elevator system An elevator system includes guide rail mounted machine (16) and a sheave assembly (32) that accommodates a guide rail (38) within a hoistway. The inventive sheave assembly includes individual sheave portions (54) rotatable along a common ... | 05/27/2008 |
| 7367430 | Elevator system A wedge-ribbed belt supports an elevator car in a cantilevered mode and engages a drive pulley of a drive mounted at the head of an elevator shaft. The belt has a running surface facing the drive pulley with a plurality of ribs and grooves extending in parallel in a... | 05/06/2008 |
| 7367431 | Elevator system A wedge-ribbed belt supports an elevator car by underlooping and engages a drive pulley of a drive mounted at the head of an elevator shaft. The belt has a running surface facing the drive pulley with a plurality of ribs and grooves extending in parallel in a longit... | 05/06/2008 |
| 7364019 | Machine-room-less traction sheave elevator The present invention is about a traction sheave elevator, without the machine room, comprising an elevator car that runs on guide rails placed in the shaft and connected to at least one hoisting rope un-coiling on a diverting pulley driven by a traction sheave. The... | 04/29/2008 |
| 7360467 | Worm reduction gear and electric power steering apparatus A torsion coil spring 30 applies an elastic force to a worm shaft 29 in a direction towards a worm wheel, via a pre-load pad 70. The pre-load pad 70 restricts displacement in relation to the widthwise direction, by one side face portion o... | 04/22/2008 |
| 7360630 | Elevator positioning system The present invention provides an elevator position compensation system which minimizing the re-leveling of an elevator car in an elevator shaft. The elevator car is suspended in the shaft by an elevator cable system and elevator motor, wherein the elevator position... | 04/22/2008 |
| 7353913 | Elevator hoisting machine and motor A elevator hoisting machine is provided with a stator mounting portion at which a stator core of a motor is mounted to a surface of a side opposite to a sheave in a sheave rotation centerline direction of the hoisting machine. A hat shape fixed frame member in which... | 04/08/2008 |
| 7339297 | Drive for an elevator installation with integrated sensor A drive for an elevator installation which drives a car and a counterweight with supporting and driving belts includes a drive shaft and a drive pulley. A motor is arranged at either side of the drive pulley and is equipped with a signal transmitter. An inner ring o... | 03/04/2008 |
| 7326139 | Belt with integrated monitoring A belt has at least two fiber strands which have synthetic fiber threads twisted in themselves and are designed for acceptance of force in longitudinal direction. The strands are arranged at a spacing relative to one another along the longitudinal direction of the b... | 02/05/2008 |
| 7316295 | Drive unit with brake for an elevator An elevator drive unit includes an engine, an engine stand, a bearing block, a traction sheave and an engine frame with a counter-roller base. The stator of the electric drive is bolted, by means of a flange, to the engine stand. The rotor of the electric drive sits... | 01/08/2008 |
| 7316296 | Elevator apparatus In an elevator apparatus, a first driving machine having a first drive sheave and a second driving machine having a second drive sheave are disposed in an upper portion of a hoistway. A car and first and second counterweights are suspended inside the hoistway by a m... | 01/08/2008 |
| 7299896 | Elevator system having drive motor located adjacent to hoistway door An elevator system includes a hoistway having a plurality of hoistway doors. An elevator car and counterweight are provided in the hoistway. A drive motor is drivingly coupled to the elevator car and counterweight, and is located adjacent to either the top or bottom... | 11/27/2007 |
| 7293631 | Machine room-less elevator There is provided an machineroom-less elevator which can reduce the pit depth in a bottom part of an elevator shaft, mostly perform maintenance work on an upper space of a cage, and reduce a top clearance. A pair of right and left cage-side sheaves are disposed in t... | 11/13/2007 |
| 7273133 | Elevator hoisting machine An elevator hoisting machine includes a first rotary part having a sheave, a brake-side end plate, and a brake disk integrally formed together, a second rotary part having a rotor with a permanent magnet and a motor-side end plate integrally formed together, wherein... | 09/25/2007 |
| 7267200 | Elevator with compact rope suspension An elevator with an elevator car, guide rails, a counterweight and counterweight guide rails is arranged to minimize shaft space requirements. This elevator has a plurality of diverting pulleys mounted in an upper part of the shaft. A drive motor with a traction she... | 09/11/2007 |
| 7268514 | Motor control for stopping a load and detecting mechanical brake slippage A method and apparatus for stopping an AC motor that is controlling a load while detecting mechanical brake slippage of a mechanical brake for holding the load against movement includes a controller for decreasing torque-producing current commands from the drive whi... | 09/11/2007 |
| 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 |
| 7255330 | Field adjustable bridge crane block A field adjustable block for use with a bridge crane having a rotating cylindrical drum for rope. The block includes a cylindrical center pin having a key way recess parallel to an axis of the center pin. An inner side plate has an opening therethrough and an extend... | 08/14/2007 |
| 7249753 | Winch, particularly for driving an umbrella Disclosed is a winch, particularly for driving an umbrella, comprising a rope drum (48a) which is driven by a hand crank (24) and winds up a rope (28). Functioning of the winch is improved by the fact that said winch is provided with a fe... | 07/31/2007 |
| 7246688 | Elevator door system An elevator door system includes an elevator car having a front face defining a door opening. At least one elevator door is coupled to the front face of the elevator car for movement between an open position exposing the door opening and a closed position covering t... | 07/24/2007 |
| 7243870 | Portable studio hoist A portable studio hoist which can be positioned and secured in a studio pipe grid or other structural setting without the need for hard wired power supplies or fixed attachments. The portable studio hoist is designed to operate on standard single phase 120 volt powe... | 07/17/2007 |
| 7243759 | Tapered coupler for coupling a motor to a hoist machine There is disclosed a coupling arrangement for coupling a motor to a hoist machine. The coupling arrangement comprises a first drum flange comprising an outer body having a first end and a second end, and an inner wall surface defining a cavity of substantially circu... | 07/17/2007 |
| 7225901 | Elevator roping system An elevator, preferably an elevator without machine room, in which the hoisting machine (10) engages the hoisting ropes (3) by means of a traction sheave (11), the elevator car (1) being at least partially supported by the hoisting ropes ... | 06/05/2007 |
| 7207421 | Elevator An elevator in which the elevator car is suspended by means of hoisting ropes consisting of a single rope or several parallel ropes, said elevator having a traction sheave which moves the elevator car by means of the hoisting ropes. The elevator has rope portions of... | 04/24/2007 |
| 7207550 | Elevator, procedure for the maintenance of the elevator, procedure for the modernization of an elevator and clamping device for an elevator An elevator having a car and a suspension member or respectively hoisting member for carrying an operating weight. Furthermore, a power transmission is intended for moving the suspension member and the hoisting member over at least one moving surface of the power tr... | 04/24/2007 |
| 7207420 | Installation with support means for driving an elevator car, and corresponding support means An elevator installation has a support device engaging a driven drive pulley for driving an elevator car. The support device loops around the drive pulley at least partly and has a safety section which is so arranged that the safety section interacts with the drive ... | 04/24/2007 |
| 7204348 | Assembly arrangement of a lift drive in a lift shaft An assembly arrangement for a lift construction supports the lift drive at the upper end of both a support column and lift cage and counterweight guide rails, allowing the lift drive load to be transferred to the floor of the lift by each of the supporting members. ... | 04/17/2007 |
| 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 |
| 7195107 | Machine having pulley coupled to rotor and partially overlying stator, elevator system including machine, and drive method A machine includes a motor that includes a stator carrying a concentrated winding wound on teeth and a rotor rotatable about the stator. The rotor includes a tubular casing and permanent magnets, and a pulley coupled to the rotor. ... | 03/27/2007 |
| 7185881 | Electric winch Apparatus and methods for operating a winch system comprising a wire spooled onto a drum rotatably mounted to a shaft. A permanent magnet is mounted to the drum such that, when an electric current is applied to a coiled winding mounted to the shaft, the drum rotates... | 03/06/2007 |
