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| Number | Title | Issue Date |
| 7270217 | Exterior fire resistant, passenger elevator system The methodology and advantages that are provided in the present invention are intended to provide assistance to fire fighters and other emergency care-givers with life saving tools during fires and other smoke related emergencies that render fire and smoke victims h... | 09/18/2007 |
| 7051838 | Scaffolding system, integral safety rail therefor and methods of making the same An angled brace scaffolding system comprises a plurality of scaffolding brackets, a plurality of adjustable outriggers and a plurality of walkways. The plurality of adjustable outriggers support the scaffolding brackets against a wall with the plurality of walkways ... | 05/30/2006 |
| 7032710 | Anchor point devices, systems and methods for use in fall protection An anchoring system includes an anchor member to anchor the lifeline and at least one extending unit to extend the anchor member out to a working position beyond (horizontally) and above (vertically) an edge to provide for an overhead anchoring point. The anchoring ... | 04/25/2006 |
| 6230841 | Track ladder A track ladder that includes a ladder frame, plurality of steps secured to the ladder frame and a carriage assembly secured to the ladder frame. The ladder frame rides on an upper track and a lower track and adapted to move in a horizontal direction and p... | 05/15/2001 |
| 5960906 | Movable ladder support assembly A ladder support system, comprising a free-standing frame having an upper and lower horizontal member, and a ladder that is supported on the upper horizontal member and lower horizontal member. The frame further has a pair of ends which each have two legs... | 10/05/1999 |
| 5653307 | Dual track mounted pivoting ladder assembly The ladder system is located adjacent the front face of a storage rack. The ladder is carried by a cantilever supported carriage assembly having a pair of pivotally mounted frames. The ladder is connected to one frame and may move longitudinally along the... | 08/05/1997 |
| 5480002 | Dual track mounted ladder system The ladder system is located adjacent the front face of a storage rack. The ladder is carried by a cantilever supported carriage assembly. The ladder may move longitudinally along the front face of the storage rack and may also be moved laterally in a dir... | 01/02/1996 |
| 5348119 | Tree stand and adaptor comprising the same A tree stand consists of mounting structure and a platform member, the platform member being rotatable about the mounting structure to permit facile reorientation without need for dismounting by the occupant. The platform member may itself provide the nec... | 09/20/1994 |
| 5065838 | Movable support for window washers and the like A movable support structure from which a window washer is suspended that utilizes the parapet wall of a building as a support or runway by directing the force applied by the weight of the washer downwardly into the parapet wall. An upright frame above the... | 11/19/1991 |
| 5027921 | Method and device for transporting and distributing materials and/or equipment around the periphery of a building Device and method for transporting and distributing materials and/or equipment at the periphery of a building by using a carrier structure similar to a scaffolding or to a working or circulation walkway filled with a parapet including a carriage having at... | 07/02/1991 |
| 5007500 | Device for the maintenance of large-capacity containers A device for the maintenance of large-capacity containers such as storage tanks or the like vessels is described, which consists of a scaffolding structure for accommodating a plurality of working platforms along the container wall, such scaffolding struc... | 04/16/1991 |
| 4979589 | Work apparatus for a work on a wall surface A work apparatus for a work on a wall surface of a structure, e.g., a building, comprises rail supports secured fixedly to an upper end portion of a structure, upper provisional horizontal rails supported provisionally on these rail supports, lower provis... | 12/25/1990 |
| 4960185 | Movable cradle The invention relates to a vertically and horizontally movable work platform 4 for carrying out renovations to the concrete on reinforced concrete buildings or for replacing the structural protection on steel constructions. To increase the operational saf... | 10/02/1990 |
| 4951779 | Multiuser high-rise building fire escape device A multiuser high-rise building fire escape device includes a basic bearing frame assembly alternatively mountd on the roof or either floor of a high-rise building, and several cabins mounted on the tracks of the basic bearing frame assembly and suspended ... | 08/28/1990 |
| 4921070 | Temporary suspended access equipment - a builder's cradle A work cradle comprising a work platform suspended by ropes from a building. Two guide ropes extend downwardly on either side of the platform and are secured to the building. The work platform is attached to the guide ropes by two further ropes which are ... | 05/01/1990 |
| 4773504 | Rolling safety trolley A rolling safety trolley for traversing the upper circumference of an open tank having a top ledge comprises: a frame having an upright member and at least one cross member, and preferably a plurality of cross members, an outer wall roller affixed to the ... | 09/27/1988 |
| 4646877 | Wheeled scaffold for workmen and building material A wheeled scaffold for roofing materials has a framework for carrying the roofing materials. The framework includes a row of steps extending along the framework. First and second wheels are secured to the framework. The first wheels support the framework ... | 03/03/1987 |
| 4640383 | Movable staging scaffold system for building construction A work scaffold system including a frame structure having spaced, parallel upper and lower horizontal track members upon which a pair of vertical column members may be horizontally moved. The vertical members have tracks for the vertical movement of worke... | 02/03/1987 |
| 4542804 | Bosun chair support apparatus A manually portable, movable, bosun chair support apparatus comprising: a frame member with rollers mounted to the underside which rests on the top ledge of a building wall; an adjustable U-shaped member with arms extending downwardly, one on the inside a... | 09/24/1985 |
| 4424884 | Emergency rescue system An emergency rescue system for use in rescuing persons trapped in the upper floors of a multistory building during emergency conditions such as during a fire or the like. The rescue system comprises a rescue gondola suspended alongside the exterior face o... | 01/10/1984 |
| 4396092 | Roof supported scaffold A scaffold has features that allow it to be supported vertically by connecting it to a building. The scaffold includes a pair of legs. Each leg will telescope to vary the length of the leg. A rail interconnects the legs. A worker's platform is carried by ... | 08/02/1983 |
| 4378860 | Movable staging scaffold system for building construction A work staging scaffold system comprising an open movable structural frame with horizontal track members mounting one or more sets of carriages that support one or more associated traverse tracks carrying vertically movable worker cars and also workpiece ... | 04/05/1983 |
| 4300657 | Scaffold A scaffolding apparatus has features that are easy to carry and easy to assemble. The scaffolding apparatus includes a pair of legs that are connected together by a horizontal rail. Standoff means supports the scaffold against the building, with the legs ... | 11/17/1981 |
| 4098371 | Mobile scaffold A mobile scaffold has a carriage for traversing longitudinally a first track and a second track. The carriage is suspended from the first track. Lateral support for one side of the carriage is provided by the second track, and this track is spaced vertica... | 07/04/1978 |
| 4048924 | Roofing system Packets of long metal roofing panels are transported on the skeletal structure of a pitched roof by a carrier structure with an elongated skeletal frame spanning the purlins which run the length of the pitched roof. The carrier structure comprises wheel s... | 09/20/1977 |
| 3967699 | Hoisting apparatus, particularly for a cooling tower A hoisting apparatus mounted on a building structure has parallel-extending upper and lower tracks attached to the building structure and supporting a respective upper and lower traveling block movable thereon by a propelling device, a hoisting cage suppo... | 07/06/1976 |