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| Number | Title | Issue Date |
| 7416055 | Platform lift apparatus for attic storage space A platform lift apparatus enables the safe movement of objects to and from an attic storage space. The platform lift apparatus includes a frame, a drive mechanism, and a platform. The frame includes internal and external mounting surfaces. The drive mechanism is sub... | 08/26/2008 |
| 7308968 | Transportable rescue conveyer A transportable conveyer is provided for simultaneous rescue of multiple persons and objects. The conveyer is capable of being stored and transported in a compact folded position. The preferred embodiment is an endless conveyer with three elements: a belt equipped w... | 12/18/2007 |
| 7240726 | Elevating operator cabin for coiled tubing injector A transportable, elevating operator cabin for use in connection with controlling coiled tubing injection equipment comprises a cabin including control elements; an elongated flexible element of fixed length, such as a belt or chain, extending under the cabin, betwee... | 07/10/2007 |
| 7228669 | Suspended table assembly A suspended table assembly includes a first support and a second support that are vertically spaced from each other. A plurality of legs is provided. Each of the legs has a first end and a second end. Each of a plurality of first brackets is pivotally coupled to one... | 06/12/2007 |
| 7228939 | Platform lift A platform lift has support posts, and a platform that is coupled to the lift so as to be capable of being raised and lowered relative to the posts. A lifting mechanism moves the platform up and down relative to the posts. The platform has support structure and deck... | 06/12/2007 |
| 7222697 | Elevator An elevator is described, comprising a first series connected pulley set installed in a fixing frame, a carriage located below the first series connected pulley set, a second series connected pulley set installed on the top of the carriage, a rotary wheel installed ... | 05/29/2007 |
| 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 |
| 7014011 | Scaffolding lift system A scaffolding lift system includes a base member and a plurality of elongated vertical support members secured to the top surface of the base member. A power-operated motor is positioned adjacent the scaffolding and on the base member. The scaffolding further includ... | 03/21/2006 |
| 6318503 | Exterior emergency escape system for use on a multi-storied building An exterior emergency escape system for use on a multi-storied building that includes an escape module for holding people escaping from the multi-storied building and for moving along the exterior of the multi-storied building, cables for suspending the e... | 11/20/2001 |
| 6227537 | Service walkway for sheet-stacking apparatus An apparatus for stacking sheets has a frame defining a stacking station, a conveyor for delivering the sheets continuously one after the other at a predetermined upper level in a transport direction to the station, a platform vertically displaceable in t... | 05/08/2001 |
| 6062809 | Lift for physically-challenged passengers and method of operation A passenger lift (10) is provided for loading a passenger (12) into and out of an aircraft (14). Lift (10) includes a chassis (38) having a front (34) end and a back (36) end. A plurality of wheels (62 and 63) are attached to the chassis (38) providing me... | 05/16/2000 |
| 5595470 | Lift for physically-challenged passengers and method of operation A passenger lift (10) is provided for loading a passenger (12) into and out of an aircraft (14). Lift (10) includes a chassis (38) having a front (34) end and a back (36) end. A plurality of wheels (62 and 63) are attached to the chassis (38) providing de... | 01/21/1997 |
| 4869341 | Automatic control of work platforms This invention relates to the automatic control of work platforms and in particular to a circuit means that provides a safe operation and automatic relevelling of a work platform that is being raised and lowered by electrically powered hoists. Angle sense... | 09/26/1989 |
| 4821842 | Security unit for a hanging stage scaffolding A security unit for a hanging stage scaffolding motorized by two electric winches of which each is supplied through a control circuit, said stage having a platform or gondola directly or indirectly suspended by two lugs pivotally mounted on each of said w... | 04/18/1989 |
| 4776429 | Loading and inspection platform An access structure such as a petroleum products loading platform which includes a vertically moving work platform having guides restrained with a plurality of vertical support members to vertically guide the platform along the support members. A pluralit... | 10/11/1988 |
| 4163480 | Line travelling skips A carriage has pulleys adjacent opposite ends thereof for riding on a pair of line cables which have obstructions thereon, such as hangers and spacers. The carriage has brakes associated therewith for engaging the line cables. These brakes are such that t... | 08/07/1979 |
| 4122917 | Fire rescue equipment Fire rescue equipment for mounting on the roof of a building which includes a boom which is rotatably mounted on the roof for swinging movement over the edge of the roof and on which boom there is a pulley with a cable which is raised and lowered toward g... | 10/31/1978 |
| 4121693 | Method and means relating to high rise building access for fire fighting purposes An arrangement for assisting access to a high rise building in the event of fire within the building in which chains are secured to a movable frame so that when the apparatus is in an extended position, the chains hang well away from the face of the build... | 10/24/1978 |
| 4109896 | Boat hoists A boat hoist has longitudinally spaced lifting beams together with winch and cable means for raising and lowering the beams simultaneously by manipulation of a single hand wheel to move a boat straight up and down, there being a scissors support for each ... | 08/29/1978 |
