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"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 7510059 | Rope brake A rope brake for an elevator installation for braking a rope coupled to a car is provided, which has a stop that is immovable in the longitudinal direction of the rope and at least one brake shoe. The rope is led between the stop and the brake shoe, and the brake sh... | 03/31/2009 |
| 7416491 | Internal absorber for a shaft assembly An absorber for use within a shaft assembly of a vehicle is disclosed. The absorber includes at least one cantilever device and at least one constrained layer device. Both devices are disposed within a tube. The absorber is capable of being tuned to specific frequen... | 08/26/2008 |
| 7377371 | Rope brake A rope brake for an elevator installation for braking a rope coupled to a car is provided, which has a stop that is immovable in the longitudinal direction of the rope and at least one brake shoe. The rope is led between the stop and the brake shoe, and the brake sh... | 05/27/2008 |
| 7293632 | Brake-equipped retracting mechanism for retractable member In a brake-equipped retracting mechanism, rotational force of a motor is used to open a liquid crystal display device from a retracted position to an open position, a power spring is wound up in conjunction with this opening operation, and elastic restoring force th... | 11/13/2007 |
| 7287627 | Gravity operated cable brake for an elevator A cable brake has an electromagnet releasably retaining a mass that falls down guide rods under the effect of gravity and impacts a first arm of a trigger lever. Upon impact by the mass, the trigger lever rotates a second arm with a pawl to release a crossbar, where... | 10/30/2007 |
| 7137481 | Fall arrest device with locking roller A fall arrest device used with a fixed safety rope comprises a support arm articulated on a first spindle of the body, a roller in the form of a cylindrical wheel mounted rotating free on a second spindle securedly attached to the support arm, and a centrifugal coup... | 11/21/2006 |
| 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 |
| 7073632 | Safety system for restraining movement of elevator car when car doors are open A safety system for an elevator car which will prevent movement of the elevator car should the car drift beyond a predetermined distance from the hoistway sill with the car door in an open position. ... | 07/11/2006 |
| 6988593 | 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 device preferabl... | 01/24/2006 |
| 6948586 | Quick release rappel device A rappel device is used in rapidly descending from a height using a rope and then quickly disengaging from the rope. The rappel device comprises a body having a rim which defines a rope opening therein. The body is further adapted to be affixed to a harness. A lock ... | 09/27/2005 |
| 6846015 | Energy absorbing knee bolster An apparatus (10) for helping to protect an occupant (28) of a vehicle (12) includes a knee bolster (20). An energy absorbing device (80) is interposed between the knee bolster (20) and the vehicle (12). The device ( | 01/25/2005 |
| 6793046 | Fall arrest device for a fixed rope A follower fall arrest device used with a fixed safety rope is equipped with a securing system comprising a support arm articulated on a first spindle between an active locking and an inactive unlocking position, a roller in the form of a cylindrical wheel mounted r... | 09/21/2004 |
| 6328323 | Actuator Actuator having at least two coupling parts (4, 5) which are connected with a stabilizer (2, 13) and have coupling splines (10, 11) wherein one coupling part (5) is axially movable and prestressed by a spring (9) while the other coupling part (4) is firml... | 12/11/2001 |
| 6318506 | Single rope elevator governor An elevator system that includes a cab unit is connected by a hoisting system to a counterweight unit so that both units move at the same speed over vertical rails. A single governor rope is trained in an endless loop between an upper drive sheave and a l... | 11/20/2001 |
| 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 |
| 6296080 | Variable traction mechanism for rotary actuated overspeed safety device In an elevator safety braking device, a variable traction mechanism in a rotary actuator allows the drive wheels of the rotary actuator to operate at a reduced preload during normal elevator operation. When engaging, a higher preload is necessary. In the ... | 10/02/2001 |
| 6223868 | Brake mechanism for device for hauling up/down by rope A brake mechanism for a device for hauling up/down by rope, in particular one for the safe hauling up and down by rope of persons and loads. The device has a pulley which preferably has a back stop that prevents the pulley from turning during the roping d... | 05/01/2001 |
| 6161653 | Ropeless governor mechanism for an elevator car A ropeless governor system is provided for governing the speed of an elevator car (2) in the event of an overspeed condition. An actuator for a safety device (30) is positioned in close proximity to an elevator rail (14) and activated to come into contact... | 12/19/2000 |
| 5797472 | Reactive governor A governor for a moving device, such as an elevator, includes a primary assembly that generates a magnetic field and a secondary assembly extending through the generated magnetic field. The assemblies define a rotor and a stator that rotate at a relative ... | 08/25/1998 |
| 5738339 | Rope traction device with connected locking units A rope traction device has locking units that include a sheave on which a traction rope is wound. The rope traction device is adapted to be moved along with the traction rope and includes a traction rope inlet for feeding the traction rope to the sheave a... | 04/14/1998 |
| 5653312 | Elevator governor An elevator governor has two balancing springs, i.e., a first balancing spring for continually urging flyweights in a direction against a centrifugal force and a second balancing spring for urging flyweights in a direction against the centrifugal force on... | 08/05/1997 |
| 5617933 | Bi-directional elevator governor An elevator governor rope brake assembly is disclosed for slowing governor rope movement upon the occurrence of unintended movement of an elevator cab. The assembly comprising a governor sheave over which a governor rope passes, with a pivotally mounted b... | 04/08/1997 |
| 5540307 | Rescue system A centrifugal brake for use with a hoist having a rope wound around a rope drum mounted on a support plate, includes a housing adapted for attachment to the support plate, the housing having a rope wheel mounted on one end of a shaft for rotation with the... | 07/30/1996 |
| 5228540 | Elevator car brake with shoes actuated by springs An elevator car braking system in which a pair of brake shoes engage and grip the hoisting ropes, part of the hoisting apparatus or the car guide rails when compressed springs, which are normally held in a compressed state by an electrically operable lock... | 07/20/1993 |
| 5201821 | Disc brake elevator drive sheave Movement of an elevator cab drive sheave is controlled by a multiple disc brake assembly which is operably connected to the output shaft and sheave of the elevator drive machine. The disc brake assembly can act as an upward or downward safety brake, and c... | 04/13/1993 |
| 4923037 | Fall arrest device A fall arrest device movable along a vertical lifeline comprises a toothed wheel rotatable in its own housing, which housing is pivoted and spring loaded inside an outer housing, so as to cause the toothed wheel to bear upon a lifeline running within a co... | 05/08/1990 |
| 4729456 | Rope locking device with lock device and lock release therefor A rope locking device for stopping an abnormal descent of an ascending and descending apparatus such as a gondola used for a construction work. The device comprises two separate cases. One of the cases contains a rope clamping member formed on one side th... | 03/08/1988 |
| 4498563 | Wireline catcher An oil well wireline cable catcher apparatus includes a housing having a bore which passes vertically therethrough so that a wireline can pass vertically therethrough and then into the oil well bore. Sensing means are also included to monitor tension of t... | 02/12/1985 |
| 4488754 | Seat belt anchoring apparatus Apparatus for securing a seat belt to a longitudinally adjustable seat track mechanism of a motor vehicle. The seat belt is connected to one end of a lever, the lever being pivotal within the legs of a stepped U bracket, the step being secured to the mova... | 12/18/1984 |
| 4448531 | Displacement measuring instrument In a displacement measuring instrument comprising a case having a substantially enclosed construction, a fixed scale solidly secured to the case, a spindle abutted at the forward end thereof against an object under measurement and reciprocated due to a di... | 05/15/1984 |
| 4447018 | Toggle type web lock A toggle type web lock using articulated bars in a channel frame to close on webbing with a force dependent upon tension in the webbing. The web lock is variably located in safety belt harness systems and is of greatest utility in prevention of webbing el... | 05/08/1984 |
| 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 |
| 4392555 | Fall protection device A fall protection safety device is disclosed which is suitable for use in environments wherein suspended particulate matter is present. The device comprises an elongated tubular housing having an upper end guide block with a centrally located opening ther... | 07/12/1983 |
| 4311220 | Safety catch for elevators, lifting platforms, and the like A safety catch device for elevators, lifting platforms and the like in which a load bearing rod passing through the safety catch is clamped in by means of a plurality of series connected conical clamping discs which are acted upon by disc springs via an a... | 01/19/1982 |
| 4254941 | Automatic anti-fall device for manual or motorized lifting systems The device is adapted to be used in a manual or motorized lifting system comprises a self-tightening jaw-block which normally lets a lifting or an auxiliary cable pass through it, whereby a releasing device, by an excessive speed of the cable relatively... | 03/10/1981 |
| 4240529 | Vertical conveying apparatus Apparatus for conveying goods in vertical direction, such as a stacker crane or elevator, with a lifting unit and an emergency braking system which influences the lifting unit as soon as a preselectable speed is exceeded. The braking system comprises two ... | 12/23/1980 |
| 4171795 | Safety line and mechanism A safety line for use in industrial and other construction is combined with a take-up reel and braking device. The mechanism is maintained in a housing attached to harness device worn by the worker, with the line being attached to a suitable structural co... | 10/23/1979 |
| 4106753 | Automatic anti-fall device for power-driven lifting machinery The device, adapted to be associated with a motorized hauling installation, comprises a self-clamping jaws block with a safety cable passing through it onto which the load can be transferred by clamping the jaws. The jaws block is connected by means of co... | 08/15/1978 |
| 4078634 | Lift apparatus and safety bracket usable therewith In the preferred embodiment of the invention disclosed herein a lift apparatus includes a load carriage movable along a mast member by a hoist means including a cable supporting the load carriage and connected to a drive means. Also included is a safety b... | 03/14/1978 |
