Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 7267201 | Emergency brake device of elevator An emergency brake apparatus for an elevator system is installed on an elevator cage or a balance weight of the elevator system and includes a grip member with slant surfaces and a pressing surface sandwiching a guide rail, a pressing member disposed movably between... | 09/11/2007 |
| 7255204 | Apparatus for moving elevator equipment An apparatus for moving elevator equipment, particularly an elevator car when stuck in a shaft, comprises a suspension point which is connected to the elevator equipment by an adjustable-height connection. Contrary to the prior art, the suspension point includes a l... | 08/14/2007 |
| 7128189 | Equipment for engaging a safety braking device for a lift cage A tripping device for engaging an elevator lift cage safety brake has actuating levers arranged at a rotary axle for engaging safety brake wedges of the safety braking device. Each actuating lever has a longitudinal slot matched to the diameter of the rotary axle, w... | 10/31/2006 |
| 7097003 | Elevator landing door broken chain safety device A vertically sliding freight elevator landing door with a safety brake that deploys when a chain suspending the door breaks. The safety brake is adapted for use on both panels that slide up to open or that slide down to open. The brake, which is simple in constructi... | 08/29/2006 |
| 7077246 | Fall safety device A fall safety device is provided having a load-bearing rotor 2, which supports at least one locking member 6, which can be moved by centrifugal force and which is moved into engagement with at least one stop 7b of a stator 4 if a c... | 07/18/2006 |
| 7066822 | Multidirectional amusement device A multidirectional amusement device is shown having a support structure extending above a support surface. A ride vehicle is secured to the support structure with support lines and is allowed to move freely beneath the support towers. A retraction tower receives a t... | 06/27/2006 |
| 7036638 | Brake arresting device with adaptable brake force for an elevator A safety brake device has a setting device moving an abutment or a housing to limit movement of brake wedges engaging a guide rail which limits a braking force applied by the brake wedges. The setting device can continuously adjust the braking force limit in depende... | 05/02/2006 |
| 7024975 | Brake mechanism for power equipment Woodworking machines are disclosed having cutting tools adapted to cut workpieces. The machines include a detection system adapted to detect one or more dangerous conditions between a person and the cutting tool. The machines also include a brake mechanism having on... | 04/11/2006 |
| 6997287 | Elevator emergency stopping device In an elevator emergency stop device wherein emergency stop of the elevator cage (20) is achieved by generating frictional force at a sliding part (11) and guide rail (1) by pressing a sliding part (11) against guide rail 1 using a... | 02/14/2006 |
| 6938887 | Suspension system for bicycles The present invention relates to a spring damper system for bicycles having a first load-applying segment, a second load-applying segment, at least one spring mechanism, a damping means, and a regulating mechanism that automatically effects a damping behavior of the... | 09/06/2005 |
| 6877594 | Disc brake to be opened by torque A disc brake to be opened by torque is arranged between a drive shaft and a driven shaft and comprising a brake wheel arrangement arranged between the drive shaft and the driven shaft, a friction surface arrangement arranged to co-operate with the brake wheel arrang... | 04/12/2005 |
| 6691834 | Elevator governor A centrifugally activated device for controlling the speed of movement of an elevator cab includes the capability of controlling upward and downward movement. A first stopping device is associated with at least one elevator sheave. A second stopping devic... | 02/17/2004 |
| 6631792 | Low friction slip assembly An improved slip assembly having a base and at least two opposing slip frames positioned on the base with each of the slip frames including a planar slip surface. Additionally, a die is carrier positioned within each of the slip frames and each of the die... | 10/14/2003 |
| 6619435 | Device for preventing uncontrolled acceleration of an elevator car installed in an elevator installation A device for preventing uncontrolled acceleration of an elevator car installed in an elevator installation. The device has a limiting cable guided over rollers in a direction of movement of the elevator car. A braking device which is joined to the elevato... | 09/16/2003 |
| 6318507 | Emergency stop apparatus for elevator An emergency stop apparatus for an elevator having a simple structure as well as effectiveness, which may facilitate to reduce manufacturing and maintaining cost. The emergency stop apparatus for an elevator includes a pair of wedges for stopping the elev... | 11/20/2001 |
| 6315089 | Safety lock device with rotating clover mechanism A safety lock device including a clover mechanism mounted on a rotating shaft to be used with an unbalanced free-fall dog that precludes rotation of the rotating shaft upon rapid acceleration or excessive speed of the rotation of the shaft. The free-fall ... | 11/13/2001 |
| 6179094 | Hydraulic elevator with plunger brakes A brake for a plunger of a hydraulic elevator is provided which in a preferred embodiment includes a pressure plate, a first brake ring, a wedge plate, a biasing spring and a fluid release actuator. The pressure plate is movable along an axis generally pa... | 01/30/2001 |
| 6082506 | Breaking arrangement for elevating work platform A breaking arrangement for elevating work platform includes a break body, a C-shaped receiving piece, a breaking unit, and a break released handle. The breaking arrangement allows only upward movement of the elevating work platform during normal operation... | 07/04/2000 |
| 6010426 | Lock device of output shaft A lock device for an output shaft, wherein an output shaft is formed by connection of a driving shaft and a driven shaft, a play angle for not transmitting power for a specified angle in mutual rotating directions is formed in the connection area for conn... | 01/04/2000 |
| 6003636 | Safety apparatus for elevator A safety apparatus for an elevator of the present invention includes an emergency stopping mechanism for generating a high frictional force to brake the elevator, a driving apparatus for operating the emergency stopping mechanism, a cam latch mechanism fo... | 12/21/1999 |
| 6003798 | Adjustable brake for baitcast reel A braking apparatus for a fishing reel and a braking element assembly preferred for use in the inventive apparatus. The inventive braking apparatus comprises: a contacting structure; a plurality of braking elements for contacting the contacting structure ... | 12/21/1999 |
| 5950949 | Adjustable brake for baitcast reel A braking apparatus for a fishing reel comprising: a plurality of braking elements; a braking element assembly for retaining the braking elements in radial paths about a rotational axis such that a centrifugal force imparted to the braking elements by rot... | 09/14/1999 |
| 5782319 | Elevator car and counterweight safety A braking device is described for an elevator having a governor that actuates above a tripping speed for braking an elevator car or counterweight that is guided on a vertical guide rail. The braking device includes a unitary safety housing attached to the... | 07/21/1998 |
| 5767022 | Friction pad containing high temperature stable continuous filament glass fibers Composition and process for the preparation of high temperature stable continuous glass fibers with an upper temperature use limit of 2300° F. are provided. The compositional formulation, in mole percent, is 62-85% SiO2, 10-20% Al2 ... | 06/16/1998 |
| 5697476 | Safety brake A pair of pawl assemblies is mounted on a shaft. Each pawl assembly includes a pawl, an arm and a hub. The arm is attached to the hub by a pivot, and a spring biases the arm toward the hub. The pawl attaches to the end of the arm, and the surface of the p... | 12/16/1997 |
| 5645142 | Wedge braking system for multi-stage lifts Apparatus for braking relative vertical movement between two vertical members includes a ramp mounted on one of the members to oppose a vertical face on the other. If the ramp member accelerates downwardly a wedging roller is wedged between the ramp and t... | 07/08/1997 |
| 5630483 | Procedure and apparatus for triggering the safety gear of an elevator In this overspeed governor, an overspeed condition causes, by way of coupling elements (15,15'), a brake (5) comprised in the overspeed governor to engage a rope pulley (3) which, due to friction, brakes the rope driving the rope pulley itself and thus tr... | 05/20/1997 |
| 5492200 | Procedure and apparatus for triggering the safety gear of an elevator A procedure and an apparatus triggers the safety gear of an elevator at a speed lower than the gripping speed. The overspeed governor of the elevator comprises a pulley (3) driven by the safety gear rope and a brake (5) connected to it by knuckle pins (14... | 02/20/1996 |
| 5323877 | Device for the triggering of safety equipments of a lift plant An apparatus is mounted on an elevator car for actuating a safety catch or a car brake when an excess car speed is detected in either a downward or an upward direction of travel, or when an unchecked movement of the elevator car takes place. The actuation... | 06/28/1994 |
| 5310022 | Mechanical overspeed safety device An overspeed governor comprises a pair of wedge brakes for selectively acting against a brake surface attached to the rotational shaft of an elevator drive. A maintaining apparatus is provided to maintain the wedge brakes in a normal position, out of enga... | 05/10/1994 |
| 5301773 | Positive terminal overspeed protection by rail grabbing A permanent magnet 54 mounted on rods 41 passes vertically over a conductive plate 56 in an elevator hoistway 36, a reactive force causes movement of the permanent magnet 54 vertically away from the conductive plate 56 so that a wedge 24 secured to the ro... | 04/12/1994 |
| 5299661 | Mechanical overspeed safety device A bidirectional overspeed device is provided for an elevator system having an elevator car for travel within a hoistway along a guiderail. The elevator includes a governor rope running from a governor sheave at the top of the hoistway to a tension sheave ... | 04/05/1994 |
| 4907679 | Catch device for a roll-up door, grate, grill or the like A catch device to prevent a rapid rotation of the shaft of a roll-up door or the like has a toothed brake wheel received in an asymmetric clamping ring in a housing. A pawl on the clamping ring engages in a toothed recess of the brake ring at excessive sp... | 03/13/1990 |
| 4696375 | Chain break safety device A chain break safety device for vertically moving, bi-parting, counter-balanced elevator doors which comprises a block having a vertical lead disposed tapered opening, said block having limited vertical moveability with respect to the door, a braking memb... | 09/29/1987 |
| 4662481 | Elevator system An elevator system having a car mounted governor which includes a rotatable portion biased against a guide rail, and a fixed portion. The governor is pivoted from an operating position in which the rotatable portion rotates in response to car movement, to... | 05/05/1987 |
| 4653612 | Speed limiter for lifts provided with catch device The present invention concerns a speed limiter for lifts provided with catch device. The tension force acting on the lifting rope of an elevator is greatly variable. A detrimental feature herein is the jerky stopping of the rope sheave, resulting in loopi... | 03/31/1987 |
| 4602700 | Fail-safe mechanical drive for syringe A high reliability drive arrangement produces a rate-controlled output displacement and is particularly suited for driving a medical infusion apparatus. Energy for producing the output displacement is derived from a wound spring which, in a preferred embo... | 07/29/1986 |
| 4565264 | Elevator system An elevator system wherein installed within the elevator shaft are a governor and a guide wheel at the lower and upper portions, respectively, a governor wire rope extending therebetween to which is connected an actuation mechanism for a safety device of ... | 01/21/1986 |
| 4448290 | Safety device for a cable wound drum The invention relates to an improved safety device for stopping cable payout in an overspeed condition, and particularly to a safety device for securing an object from falling because of failure of a hoisting device. According to the invention, an inertia... | 05/15/1984 |
| 4407498 | Lock for a flexible element An inertial lock for a safety belt includes a frame supporting a fixed locking jaw and a movable locking jaw. The belt passes between the jaws. A spring yieldably urges the movable jaw into gripping orientation with respect to the fixed jaw to prevent mov... | 10/04/1983 |
