Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 8167087 | Multimodal indicator safety device for ladder positioning A safety device for measuring and indicating the level of a ladder having rungs extending between a pair of elongated ladder rails, the safety device comprising a housing dimensioned to be inserted into one of the rungs of the ladder, an electronic sensor disposed i... | 05/01/2012 |
| 7828116 | Mobile mount for attachment of a fall arrest system A mobile mount for attachment of a fall arrest system is provided for example for aircraft and includes a base carried on ground wheels and a support which is adjustable in height upstanding from the base and an arm cantilevered over the base. At least one receptacl... | 11/09/2010 |
| 7392593 | Angle meter and spirit level The angle meter and spirit level apparatus can be affixed to a ladder and used to determine the angle at which the ladder is placed. The apparatus is also self-verifying in that it provides a way to know that the apparatus is operating properly. The apparatus also a... | 07/01/2008 |
| 7370725 | Motorized rungless ladder A device supported by a ground surface and a structure for at least one of elevating and descending a user. The device includes a first guide rail having a first channel extending along a length thereof and a second guide rail having a second channel extending along... | 05/13/2008 |
| 7341159 | Safety system for preventing falls A safety system for preventing crane operator injury. Two ergonomic tracks are attached on either side of the working crane. A fall transmitter is used whenever a crane operator is not on the floor. The fall transmitter has speed and travel distance governors that l... | 03/11/2008 |
| 7337878 | Emergency ladder system An emergency ladder system for providing an exit from non-ground level floors of a building in the event of an emergency such as a fire includes an alarm system having fire detectors positioned in a building. The alarm system is operationally coupled to a ladder pos... | 03/04/2008 |
| 7311178 | Work piece support hinge assembly A work piece support assembly can be assembled in either an operating configuration or in a flattened coplanar configuration for storage. The support assembly includes a pair of leg assemblies, one each for the proximal and distal end portions of an elongated rail s... | 12/25/2007 |
| 7271286 | Carboxylation of aromatic hydrocarbons to produce aromatic carboxylic acids Aromatic carboxylic acids are produced by reacting a Lewis acid: CO2 complex with aromatic hydrocarbons. The complex can be created by incubating a Strong Lewis acid and CO2 and forming a composition consisting essentially of CO2, st... | 09/18/2007 |
| 7200949 | Motorized chalk box The motorized chalk box includes a chalk line reel having an internal ring gear. An electric motor drives a pinion gear, which engages the ring gear, thus resulting in a very compact assembly. The motor and gearing are sealed from the chalk dust reservoir, through w... | 04/10/2007 |
| 7198134 | Method and apparatus for assisting multiple climbers A method is provided for assisting multiple climbers in ascending and descending the same ladder using an apparatus that includes a plurality of counterweights and a rigging system coupled to the counterweights, the rigging system includes at least two subsystems, e... | 04/03/2007 |
| 7194842 | Portable observation tower A portable structure from which hunters and wildlife observers can command elevated views of wildlife habitat. Commonly called a blind, it can be constructed as a stand-alone structure and transported intact to habitat sites on, for example a flat-bed truck. It can ... | 03/27/2007 |
| 7194358 | Lift collision avoidance system The present invention is directed to systems, devices and methods for avoiding collisions and detecting objects proximate to a surface. In one embodiment, a system for collision avoidance includes at least one sensor adapted to sense an object above a lift device an... | 03/20/2007 |
| 7188704 | Energy absorber An energy absorber comprises a housing (1), a store (15) of plastically deformable material (8) mounted in the housing and having an endstop (27), an attachment (3) for attaching the energy absorber to a structure, another attachme... | 03/13/2007 |
| 7182174 | Method and system for emergency evacuation of building occupants and a method for modernization of an existing building with said system A method and a system for emergency evacuation of building occupants and to a method for modernization of an existing building with the evacuation system. The system is used in a multi-story building having a plurality of floors and with at least one elevator positi... | 02/27/2007 |
| 7163221 | Retractable vehicle step with anti-strike/anti-pinch sensor system A retractable step assist for a vehicle comprises a step, an actuator, an optical fiber sensor, and a safety. The step is movable between a retracted position and a deployed position that is downward and outboard from the retracted position. The actuator is mechanic... | 01/16/2007 |
| 7163083 | Safety anchoring device comprising a shock absorber The invention relates to An anchoring device that is intended for, for example, the roof of a building. The inventive device comprises: a base which is used to fix to roofing; a hook element which is mounted to the base at one end thereof and which comprises a hook ... | 01/16/2007 |
| 7140467 | Bulk material transport vehicle access structure A bulk material transport vehicle access structure includes an elongated service platform for workers which is pivotally supported at its opposite ends to cantilever arms on parallel horizontal axes to avoid binding between the roller carriages of the cantilever arm... | 11/28/2006 |
| 7121382 | Independently adjustable extensions leveling a ladder Independently adjustable ladder extensions for use with folding, step, or extension ladders includes at least one pair of ladder extensions with each ladder extension including an adjustable leg disposed within and encompassed by the lower end of the ladder side rai... | 10/17/2006 |
| 7108099 | Personal safety methods and apparatus A safety anchor (20) for securing a user to a substantially vertical safety structure, e.g., elevator cable (21). Safety anchor (20) includes a back plate (26) to which are pivotally mounted a roller (28), inner cam assembly (30... | 09/19/2006 |
| 7073627 | Dorsal pad assembly for use with a safety harness A preferred embodiment safety harness includes two straps operatively connected to a D-ring, which is operatively connected to a biasing mechanism urging the D-ring to an upright position. The safety harness may also include an impact indicator for providing indicat... | 07/11/2006 |
| 7048092 | Helical ramp life-preserver The present Patent of invention “HELICAL RAMP LIFE-PRESERVER” refers to a model of helical ramp, aimed for collective use, for immediate rescue of lives subjected to a probable fire, to be used in buildings of any height, or in places that cannot be reached by t... | 05/23/2006 |
| 7036631 | Wheel attachment for ladder A wheeled dolly or support for a ladder is made in two pieces, including a base plate that permanently affixes to an outside surface of a rail of a ladder, and a frame that is removably mounted on the base plate. The frame carries wheels that will support the ladder... | 05/02/2006 |
| 7021424 | Support platform A support platform with a first and second bracket. The brackets each have first, second, and third sleeves. A cross member is inserted into and extends between the first sleeves of the brackets. Leg members are slidably inserted into and extend from the second and ... | 04/04/2006 |
| 7017768 | Floatable barrier for use with a beverage container A floatable barrier suitably adapted for use with a beverage container having a circular base and a cylindrical wall extending vertically therefrom. The floatable barrier comprising top and bottom planar surfaces for displaying advertising material thereon and for f... | 03/28/2006 |
| 7004287 | Hidden fire escape An improved safety ladder and safety window as well as a method for use are disclosed. The ladder is discrete and compact, for convenience. The ladder is stored in a hidden container that is an extension or an addition to a normal window, or made part of an existing... | 02/28/2006 |
| 7000731 | Multi-material cover for a ladder rail end A cover for an end of a ladder rail includes a shell and a tread. The shell comprises at least one material, whereas the tread comprises at least one other material. The shell is sized to engage the ladder rail. The tread is engaged with the shell at least partially... | 02/21/2006 |
| 6966403 | Smart ladder A ladder with a tip warning system. The ladder is configured to be carried by at least one human user, and includes a plurality of legs with rungs disposed between the legs, and a tip warning system. The tip warning system includes an audio alarm and a visual alarm,... | 11/22/2005 |
| 6966448 | Trailer-mounted crane apparatus A trailer-mounted crane apparatus includes a trailer supported from a ground surface on at least two wheels. A hydraulically operated crane arm is mounted to the trailer and is extendable outwardly. A crane hydraulic power unit is mounted to the trailer and supplies... | 11/22/2005 |
| 6959784 | Torso harness A torso harness for reducing injury from a fall from a utility pole. The torso harness has a segment of elastic cordage having a first end and a second end. The torso harness also has means for securing the first end to a support device in the utility pole and means... | 11/01/2005 |
| 6959783 | Figure eight descender A figure eight descender for rappelling with a rope includes a first loop, a second loop, a neck connecting the first loop and the second loop, and a clip attached on the neck. The clip surrounds the rope so that the clip contains the rope between the first loop and... | 11/01/2005 |
| 6945356 | Termination arrangement for a horizontal lifeline cable A termination arrangement for a horizontal lifeline cable (4) for use with a structure (6) includes an elongate stocking (14) of woven wire form surrounding an end section of the cable (4). The stocking (14) has a first end (22 | 09/20/2005 |
| 6942070 | Emergency braking and shock absorbing device for a lift or suspended load The load or the working platform is suspended and displaced by at least a pair of cables whereof the stresses are equivalent. Advantageously, each pair of cables is controlled by an emergency braking device comprising means for detecting the slack strand on one of t... | 09/13/2005 |
| 6918464 | Energy absorber An energy absorber comprises a housing (1), a store (15) of plastically deformable material (8) mounted in the housing and having an endstop (27), an attachment (3) for attaching the energy absorber to a structure, another attachme... | 07/19/2005 |
| 6910553 | Building elevator A building elevator with an elevator mast and an elevator car with at least one electric drive motor for the elevator car for moving the same along the elevator mast. A novel overload-prevention device for the building elevator has two drive motors with the device i... | 06/28/2005 |
| 6902140 | Adjustable support foot An adjustable support foot comprises a support post, a plurality of retaining plates, a control device and an outer shell. The support post has a base and a screwed axle erected thereon. The retaining plates each provided with a screw thread cover around the screwed... | 06/07/2005 |
| 6880671 | Save me! sling A fire escape device that enables parents to lower their children (as well as pets and possessions) to the safety of the ground from elevated windows or terraces of tall structures. The load-lowering device is a hard-shell vessel cradled in a fire-resistant sling th... | 04/19/2005 |
| 6868941 | Security belt The invention relates to a security belt, in particular for personal protection, which can be attached and fixed to the human body. The belt comprises at least two belt sections which enable the security belt to be fitted and removed and a fixing element for connect... | 03/22/2005 |
| 6771181 | Crawl to the light emergency exit The present application provides a new emergency exit system. The system comprises an exit door controlled by an emergency detection system, which includes emergency detection sensors such as a smoke detector, a heat detector and/or a carbon monoxide detector functi... | 08/03/2004 |
| 6766761 | Firehose coupling exit indicator An indicator device captured between couplers of ends of firehose sections that point to the source of the firehose and to safety. The preferred embodiment includes gasket-like annular body which fits over the male threads of the male coupler and is captured between... | 07/27/2004 |
| 6691824 | Comfortable safety harness An improved strap for the construction of safety harnesses of the type designed to protect against falls provides increased flexibility and comfort. The strap is composed of a tubular sheath of elastic fabric that coaxially surrounds a typical high streng... | 02/17/2004 |
