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| Number | Title | Issue Date |
| 6269904 | Truss style trolley beam for a fall protection system A fall protection system has at least two widely spaced apart support members which support a rail assembly above a work area. The rail assembly includes a beam and a truss member. The beam has a generally vertical web and at least a lower generally horiz... | 08/07/2001 |
| 5720400 | Portable hoist device A portable hoist is provided for lifting and moving heavy loads a short distance. The hoist has a rectangular frame which supports a movable carriage containing a winch and pulley. The rectangular frame is adjustable along corner legs which allows individ... | 02/24/1998 |
| 5575220 | Side roller assembly for gantry crane bridge wheels A gantry truck assembly for rolling on a rail (16) where the rail has a top rail surface (42) and a side rail surface (48). The truck has a wheel (38) for rolling on the top rail surface. A flange (44) extends radially from the wheel and can contact the s... | 11/19/1996 |
| 5495956 | Crane assembly The invention is a crane system for a building for the assembly of a gas bag for a lighter-than-air vehicle, the building having a floor and a roof thereover with a longitudinal, vertical and lateral axis. In detail, the crane assembly includes a pluralit... | 03/05/1996 |
| 5156463 | Roller bearing assembly and arrangement for power tool support A roller assembly and arrangement for a torque reaction absorbing power tool support, in which sets of pairs of parallel opposing rollers are mounted to a bracket to define a space receiving a tool support shaft for guided in and out movement of the shaft... | 10/20/1992 |
| 5072840 | Medical bed apparatus A medical bed apparatus is provided that has a body frame, a hoisting assembly and a hammock supported from the hoisting assembly by hanging strings. The body frame is positioned over a hospital bed or the like and a person is placed on the hammock. A pai... | 12/17/1991 |
| 5061148 | Polar crane material handling apparatus A material handling apparatus includes a central tower having an elevated pivot point, a movable base, a support track that rests at its upper end on the central tower pivot and at its lower end on the movable base, and a trolley with hoist that moves alo... | 10/29/1991 |
| 4877206 | Concrete delivery trolley A trolley for positioning a concrete delivery conduit in a work area utilizes a carriage member movable along a support beam to carry a pipe engaging cradle. The carriage and cradle permit the conduit to be moved laterally and axially without substantial ... | 10/31/1989 |
| 4825769 | Rail assembly for use in a radioactive environment An improved rail assembly and method of construction thereof is disclosed herein that is particularly adapted for use with a crane trolley in a hot cell environment which is exposed to airborne and liquidborne radioactive contaminants. The rail assembly i... | 05/02/1989 |
| 4820101 | Automated in-process pipe storage and retrieval system An automated storage and retrieval system for use at a pipe manufacturing facility includes a computer and memory; a storage/retrieval crane operable in a storage yard; a plurality of containers, each being capable of containing material for storage and a... | 04/11/1989 |
| 4796765 | Permanent magnet transporter A permanent magnet transporter for use with a magnetizable structure having a horizontal downwardly facing supporting surface, the transporter comprising a frame member having upper and lower surfaces, a plurality of bipolar permanent magnets on the upper... | 01/10/1989 |
| 4762239 | Apparatus including a portable hoist and grapples for use in repairing water main meters Apparatus is provided for assisting in the repair of valves used in water line meters. The apparatus comprises a travel lift mounted on a collapsible frame specifically configured for erection on water line meters. Grapples are included for grappling a va... | 08/09/1988 |
| 4752011 | Rail mounted cranes A crane comprising: an elongated support structure arranged to extend generally horizontally during crane operation; a crane chassis; at least one mounting assembly mounting the chassis at least substantially on the top of the support structure for moveme... | 06/21/1988 |
| 4733783 | Multidirectional material handling support and shuttle systems Material handling systems for supporting and transferring articles within defined areas from one location to another in which cooperatively spaced support plates are mounted within the defined areas and carriages or shuttles are movably supported by the p... | 03/29/1988 |
| 4725193 | System for handling structural components A handling system for components or tools comprises a guiding track formed by a pair of spaced parallel guiding posts, on which is displaceably mounted an intermediate carrier for the components coupled to an apparatus for displacing and positioning the i... | 02/16/1988 |
| 4702661 | Robot carrier structure A robot carrier structure constituted by a portal wagon movable on rails and laterially supported by a pair of carriages each comprising a pair of wheels longitudinally coupled by motion transmission means actuated in synchronism by an electric motor. Fur... | 10/27/1987 |
| 4667835 | Hydraulically operated cranes A crane has a hollow substantially cylindrical load trolley supporting a girder and a support arrangement for the girder. A trolley track device is positioned on the outside of the hollow cylindrical girder for traversing a load along the girder means. A ... | 05/26/1987 |
| 4664873 | System for performing remotely-controlled manual-like operations in large-area cell of a nuclear facility The invention is directed to remotely-controlled manipulator carrier systems for use in maintaining and servicing process equipment housed in large-area cells affected by radioactivity wherein industrial processes are conducted. The cells are part of a nu... | 05/12/1987 |
| 4648777 | Conveyor comprising a runway rail and crab A conveyor system comprises a runway rail in the form of an extruded hollow body of oblong cross-section. The runway rail has a top portion which includes a pair of parallel surfaces including between them an angle. A similar pair of parallel surfaces is ... | 03/10/1987 |
| 4641757 | Circulating latch transport mechanism for overhead cranes A circulating latch transport mechanism is provided which is capable of moving freely in any direction across the under side of a horizontal array of parallel I-beams while remaining attached to this array. The transport mechanism is attached simultaneous... | 02/10/1987 |
| 4642017 | Automated in-process pipe storage and retrieval system An automated storage and retrieval system for use at a pipe manufacturing facility includes a computer and memory; a storage/retrieval crane operable in a storage yard; a plurality of containers, each being capable of containing material for storage and a... | 02/10/1987 |
| 4632617 | Method and system for installing a layered vessel on location A method and system for installing a layered vessel wherein the method includes the steps of constructing the bottom vessel head section in an inverted position mounting the bottom head section on the vessel foundation, erecting a generally cylindrical co... | 12/30/1986 |
| 4601360 | Beam and chain hoist for removing vehicle transmission A beam and chain hoist assembly is provided including a longitudinally extending support beam having longitudinally spaced bearing surfaces adapted to engage support portions of the cab of an overland vehicle. The support beam is bifurcated at its front e... | 07/22/1986 |
| 4454818 | Advancing of apparatus for refurbishing overhead structures A coupling trolley is provided for a rail or runway beam that is longitudinally translatable relative to a member located above and extending transversely of the rail or runway beam. The trolley has rollers to engage and support the rail or runway beam vi... | 06/19/1984 |
| 4289076 | Self aligning carrier head and truck assembly A carrier head which rides a rail is provided such that when connected by a load carrying member to a second carrier head on a second rail lateral movement is facilitated between the carriers to adjust for differences in distance between the rails. The ca... | 09/15/1981 |
| 4161144 | Restraint means for overhead travelling crane An overhead travelling crane for a structure subject to oscillations resulting from earthquake shocks, comprises a bridge having flanged main wheels at opposite ends which are supported on a circular runway rail attached to the structure. Restraint means ... | 07/17/1979 |
| 4158414 | Crane device A crane device having a track supported main frame with a trolley rollable on the main frame at right angles to the direction of travel of the main frame and with a carriage rotatable on the trolley. The trolley may consist of a single load trolley or it ... | 06/19/1979 |
