Matches 1 - 35 out of 35


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8985274 Flatbed loading system with self-aligning platforms  
A mobile platform has a separate and independent linear actuator pivotally connected near each opposite end of the platform where there is a contact limit switch that when triggered by contact...
8978821 Anchor trolley and fall arrest system and method implementing the same  
A fall arrest anchor trolley for arresting the fall of a user. In one embodiment, the invention can be a fall arrest trolley comprising: a body a brake sub-system, and a plurality of wheels...
8973708 Hunter's tree stand  
A tree stand includes an upper support ring formed of a pair of separable, semicircular sections, each having a plurality of brackets depending therefrom. Each bracket includes a slot for...
8833521 Rotatably-engaged tree stand and ladder for access there with  
The rotatably-engaged tree stand and ladder for access there with includes a pair of track straps that install around an outer surface of an existing tree, and which are generally parallel with...
8657068 Securing device  
The present invention relates to a securing device for protecting individuals against falling, with two stop elements which can be attached releasably to a positionally fixed securing element and...
8434592 Mobile tower drive system  
A mobile tower drive system for efficiently attaching a removable drive system to a scaffolding unit and driving the scaffolding unit from the work platform. The mobile tower drive system...
8002083 Search line rescue system  
A search line rescue system for use by rescue personnel to facilitate a safe search and rescue mission through an area of low to zero visibility is disclosed. The search line rescue system...
7228936 Mobile scaffolding braking system  
A mobile scaffold (10) having bi-axially rotatable casters (22–28) and including brake assemblies (30 and 32) associated with the casters (22–28) is disclosed. The inventive brake assemblies...
6786299 Swivel-power scaffold mobilizing device  
A novel and unique user-friendly swivel-power scaffold mobilizing device that provides movement in any direction parallel to the ground and rotation about a vertical axis. The device may be...
6283249 Mobile ladder with lifting tray  
A combined stepped structure and lifting mechanism includes a base and a framework secured to the base, the framework having a pair of spaced apart vertical tubes rising upwardly from the base. A...
6039148 Mechanized scaffold  
A scaffold device including a frame having four stanchions, an upper peripheral railing mounted to tops of the stanchions, and a pair of cross brace assemblies mounted between the stanchions. A...
5924524 Integrated, multi-level elevator shuttle  
An elevator system provides service between a ground level and each of three upper levels through a single elevator shuttle hoistway system. Three elevator cabs 34-36, B, D, F are moved in a...
5660249 Elevator cabs transferred horizontally between double deck elevators  
Horizontally moveable elevator cabs (22, 23) are transferred from the upper deck of a first car frame (26) to the upper deck of a second car frame (27) and from the lower deck of the second car...
5464072 Self-propelled elevator system  
A self-propelled elevator car for vertical and horizontal travel in an elevator shaft has a plurality of driven friction wheels which are pressed against associated running surfaces by a passive...
5433293 Vertical-horizontal passenger conveying system  
A vertical-horizontal passenger conveying system includes elevator cars provided with individual drives for travel in intersecting vertical and horizontal shafts. The shafts have fixed and movable...
5427557 Self-propelled ice rescue device and component  
A self-propelled ice rescue device component, as well as the device itself. The component includes (a) a main support frame; (b) a motor attached to the main support frame; (c) a power source...
5209433 Mobile rocket service tower  
A rocket assembly apparatus is disclosed in which a vertical assembly building houses a multi-stage rocket and provides a clear work area around the entire circumference of the rocket. A mobile...
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...
5014381 Rolling platform assembly  
The present invention relates to a method of installing a platform assembly designed to be mounted below a bridge deck to prevent impeding traffic below the bridge deck during installation of the...
4790410 Safety track support and coupling  
Safety apparatus for used by workers at height comprises a fixed safety cable (1) secured in spaced relation to a fixture (2) by supports such as (3), and a coupling device (8) by which a safety...
4781144 Off-shore drilling installation evacuation system  
There is provided a new and useful offshore evacuation system for drilling rigs or platforms comprising a launch structure for a survival craft; the structure comprising at least one support strut...
4633974 Inflatable roof safety rigging system  
A rigging system for retrieving a worker in the event of the collapse or tearing of a peripheral panel of an air-supported fabric roof employs one or more endless cables each entrained over...
4630708 Semi-adjustable service platform apparatus for gantry crane  
An adjustable service platform apparatus for a gantry crane having an elongated base frame which includes a pair of horizontally sliding beams which are laterally extendible outboard in opposite...
4546852 Adjustable service platform apparatus for a gantry crane  
An adjustable service platform apparatus for a gantry crane has an elongated base frame generally comforming in size and shape to a conventional load carrying lifting spreader, and twin service...
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...
4335803 Gangway ladder arrangement  
A gangway ladder arrangement used to provide a passage for a crew or operating personnel across a quay and a vessel berthing against the quay comprises a basement frame anchored to the quay, and a...
4274507 Portable support for a scaffold  
A portable support for a scaffold comprising first and second wheeled support members which are adapted to be placed on the building roof. The support members are interconnected by length...
4154318 Retractable suspended scaffolding on a self-propelled truck, particularly adapted for maintenance work on road-bridges and the like  
There is disclosed a retractable suspended scaffolding mounted on a self-propelled truck which is particularly adapted for maintanence work on structures that are situated along roadways and at...
3936333 Method for prefabricating brick panels  
An assembly line method of prefabricating brick panels in a factory for shipment to the intended site of use includes the steps of mixing a supply of mortar in one area of the plant, placing the...
3608668 MOBILE SCAFFOLD  
A mobile scaffold suitable for use in working at elevated positions on the outside or inside structure of buildings, the said scaffold being mounted on a supporting platform with means to...
3340960 Ladder  
3282374 Elevating stock picker truck  
3141521 Mining apparatus  
3095060 Scaffolding for dome structures  
2870820 Auxiliary tractor seat  

Matches 1 - 35 out of 35