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| Number | Title | Issue Date |
| 6955025 | Self-erecting tower and method for raising the tower A tall tower is divided into an upper section with a tower top and a lower section with a tower bottom. The sections are hinged together. The lower section is hinged to a tower base. A telescoping crane is attached to a lift point on the lower section. The crane is ... | 10/18/2005 |
| 6810993 | Articulated aerial device including an upper boom compensation unit An aerial lift apparatus unit includes at least a lower boom pivotally interconnected to a transport unit for raising and lowering of the lower boom. An upper boom is pivotally connected to the outer end of the lower boom for raising and lowering of the upper boom w... | 11/02/2004 |
| 6733227 | Elevating lift Disclosed herein is an elevating lift for raising and lowering a load (such as a sensor suite) onboard a vehicle, such as a Humvee, which can allow for the transport of the vehicle in a standard transport without removal of the sensor suite from the vehicle, and can... | 05/11/2004 |
| 6341665 | Retractable counterweight for straight-boom aerial work platform An aerial work platform apparatus includes a shiftable counterweight which shifts in response to movement of the boom in order to maintain optimum balance of the apparatus during movement of the boom and platform. The counterweight shifts towards and away... | 01/29/2002 |
| 6250485 | Boom articulation assembly for aerial boom sections A mobile aerial apparatus includes a lower boom and an upper boom and pivotally mounted to a pedestal. A lift cylinder pivots the lower boom. An articulated assembly includes a common pivot support secured to the articulated ends of the booms on a common ... | 06/26/2001 |
| 6182788 | Elevating work platform An elevating work platform unit is mountable on, and de-mountable from, a vehicle. A counter leverage arm assembly is connectable to the vehicle to provide vertical stability for the mast which supports a boom and platform for luffing and/or slewing movem... | 02/06/2001 |
| 6098352 | Deck assembly A deck assembly. The deck assembly may have at least one nonmovable horizontally-oriented unit and at least one movable unit that pivotally attached to a nonmovable unit. The movable unit can be pivoted between a first position wherein it is substantially... | 08/08/2000 |
| 5538150 | Boom latch A boom assembly includes a boom arm movable away from and into a first position used for storage and transport of the boom assembly, and a boom latch positioned adjacent a free end of the boom arm when the boom arm is in the first position for restricting... | 07/23/1996 |
| 5465808 | Elevating system An elevating system elevates a payload platform between a first position and a second position, such elevating system having a stowed position, an operational position, and a fully-deployed position. The elevating system includes an extendable actuator ro... | 11/14/1995 |
| 5460246 | Articulated aerial lift An articulated aerial lift has a platform that is coupled to one end of a boom. The other end of the boom is connected to an upper end of a riser. An arm couples the lower end of the riser to a turret. As the arm moves between a lowermost position to a ra... | 10/24/1995 |
| 5271707 | Aerial lift platform An aerial lift platform apparatus preferably mounted on a mobile vehicle which supports and transports the apparatus. The apparatus base is mounted on the vehicle, a mast of the apparatus is mounted on the base and houses a basically vertical mast hydraul... | 12/21/1993 |
| 5226776 | Foldable link rod for carrying an operative platform Foldable link rod system to be placed on a travelling frame comprises pivotally suspended link rods (16, 18) for raising and lowering an operation platform (14). A rotating stool (20) constitutes the connection between two link rods (16 and 18) which are ... | 07/13/1993 |
| 5196998 | Adaptive control man-augmentation system for a suspended work station An adaptive control man-augmentation system controls the movement of a suspended work station. A support structure, usually mounted on a chassis, has with an extendable boom and a work station at the end of the boom. A directing member pivots in accordanc... | 03/23/1993 |
| 5070964 | End effector with astronaut foot restraint The combination 10 of a foot restraint platform 12 designed primarily for use by an astronaut being rigidly and permanently attached to an end effector 14 which is suitable for attachment to the manipulator arm 16 of a remote manipulating system. The foot... | 12/10/1991 |
| 5037068 | Hoisting device A camera platform is positioned on the upper end of a lifting mechanism formed by a pair of driving cranks where the outer end of the second crank is connected to the camera platform and the inner end thereof is connected to the inner end of the primary c... | 08/06/1991 |
| 5033705 | Camera support apparatus with multi arm motion A camera/device support platform with improved structure for positioning the camera/device in multiple positions and about multiple axes. The camera/device is supported and counterbalanced in such a manner so as to maintain the mounting platform in a fixe... | 07/23/1991 |
| 5016731 | Articulated boom including tensioning apparatus An aerial lift comprising a frame, an articulated boom including a first and second boom portions, a workman support structure mounted on the upper end of the second boom portion for pivotal movement relative thereto about a generally horizontal axis, and... | 05/21/1991 |
| 4917214 | Aerial lift bucket rotation device including bucket leveling means An aerial lift including an improved structure for supporting the bucket or platform and compensating for changing forces on the bucket support structure as the bucket rotates from a side hung position to a forward position. The compensating structure pro... | 04/17/1990 |
| 4877422 | Mobile aerial lift with boom structure having insulated boom section containing a clean, moisture free environment and method A mobile aerial lift having a vehicle and a boom structure mounted on a vehicle. The boom structure has an outer extremity. A workman's basket is mounted on the outer extremity. A control is carried by the boom structure and is accessible to the workman's... | 10/31/1989 |
| 4846357 | Offshore station articulated boom maintenance unit This invention relates to an articulated boom structure unit (15) adapted to be mounted on an ocean going lift barge (16) for maintenance of an offshore station (14), and having a platform (17) vertically movable relative to ocean floor engageable leg uni... | 07/11/1989 |
| 4780045 | Robot with improved cable routing system In a robot including a first robot part which pivots with respect to a second robot part about a pivotal axis, a cable routing system includes a multitude of flexible cables which are retained at spaced apart positions by first and second retainers so tha... | 10/25/1988 |
| 4746024 | Aerial boom with tensiometer Tensiometer placed on the free end of an aerially articulable boom such that the tensiometer's load indicator is visible from the bucket. A cable extending from the boom's free end may be attached to a working object such as a transformer. When the boom i... | 05/24/1988 |
| 4724924 | Control handle arrangement for aerial bucket lift In an aerial lift having a lower boom, an upper boom, and a personnel carrier bucket attached to the upper boom, with the upper boom having an overcenter capability, wherein the upper boom can pivot from a folded position in a non-overcenter zone of opera... | 02/16/1988 |
| 4721213 | Equipment and method for installing apparatus at elevated locations Equipment for installing apparatus at an elevated location at a site comprising an aerial lift and a crane located at the site. Each of the aerial lift and the crane comprises a vehicle, a boom structure mounted on the vehicle and control means for the bo... | 01/26/1988 |
| 4667771 | Vehicle transported selectively elevatable nacelle supporting lifting crane A nacelle supporting lifting crane comprising four articulated lever stages, including a first lever stage articulated to a bracket integral with a thrust block rotatable in opposed directions around its vertical axis with respect to a fixed base supporte... | 05/26/1987 |
| 4606469 | Double link level luffing crane To enable the crane driver of a double link level luffing crane to adapt the height of his cab above the ground to the size of the ship to be loaded or unloaded, the drivers cab is mounted at the end of a separate cab link having a hinge connection with a... | 08/19/1986 |
| 4554995 | Arrangement for providing heat to a personnel bucket of an aerial lift vehicle An arrangement for providing heat to the working environment of a bucket attached to an aerial lift vehicle is disclosed. A tubing arrangement is located at the bottom of the bucket and is receptive to heated hydraulic fluid. The hydraulic fluid is common... | 11/26/1985 |
| 4514796 | Method and apparatus for controlling the position of a hydraulic boom A method is set forth for controlling the orientation of an articulated boom of the type having a first portion and a second feed arm portion such that the first portion remains parallel to a predetermined position during movement of the articulated boom.... | 04/30/1985 |
| 4512436 | Platform rotating mechanism for aerial devices A mechanism for rotating an aerial platform carried on the upper end of a truck mounted aerial boom assembly. The upper boom tip carries a rotatable platform pin to which a rigid beam is secured to extend forwardly beyond the boom tip. The platform is a b... | 04/23/1985 |
| 4476955 | Articulated powered lift machines An articulated power lifting machine has a tool at the end of its working arm. The position of the sections of the working arm is sensed and made to operate a tool levelling system. That same sensor is made to move counterweights in a system which achieve... | 10/16/1984 |
| 4475625 | Detachable non-conductive platforms for aerial boom trucks A platform for attachment to an aerial boom, said platform being constructed of lightweight dielectric material and mounting collapsible guard rails. The platform includes braces which stabilize and position it on the aerial boom.... | 10/09/1984 |
| 4453672 | Vehicle mounted aerial lift A lower boom is pivotally mounted on a turntable and moved upwardly and downwardly by a hydraulic cylinder, the lower end of which may be pivoted on the same pivot shaft as that on which a pair of links are pivoted. The outer ends of the links are pivotal... | 06/12/1984 |
| 4427121 | Hydraulic valve control for aerial book devices A hydraulic control system which is of an open center parallel circuit arrangement for aerial boom devices with two return lines, said system having control valves for upper and lower boom arms, wherein the lower boom control valve overrides the upper boo... | 01/24/1984 |
| 4407419 | Portable boom support for vehicles A portable boom support adapted to be mounted on a vehicle which can be adjusted to the contour of the ground and provides the total support for an aerial boom or similar device during its operation. The boom support includes a frame which is attached to ... | 10/04/1983 |
| 4365926 | Free-hanging load carrier for boom, with brake The use of a lift fork for a boom swinging vertically over 240° is made feasible by hanging the lift fork with freedom to pivot as gravity dictates when the angularity of the boom is changed, with a brake by which the angularity between boom and lift for... | 12/28/1982 |
| 4170854 | Joint between the lower portion and the main portion of a loading crane post and a method of providing such a joint An improved joint and method of providing such a joint between the upper and lower portions of a rotatably driven crane post, comprising a sleeve-shaped member formed internally with screw threads and provided at the lower end of the upper position, a pin... | 10/16/1979 |
| 4146998 | Position responsive valve for controlling the retraction rate of a lower boom in an articulated boom assembly In an articulated boom having a platform and comprised of upper and lower booms respectively, there are hydraulic actuators controlling the movements of the upper and lower booms. Control means are necessary in association with the lower boom to control i... | 04/03/1979 |
| 4109480 | Under water crane A system of submarine cranes suited to handling pipe, fittings, tools and machinery on the marine floor, as by divers, and having simple articulate carrying crossbeams with hydraulic motive means and controls, and possible balloon assistance and means to ... | 08/29/1978 |
| 4089388 | Fluid control system A hydraulic valve system uses spool type pilot valves with the valve openings notched to provide non-linear response to movement of pilot valves. A servo type valve with a four-way spring centered spool is operated either manually or hydraulically by the ... | 05/16/1978 |
| 4081055 | Hydraulic device for controlling the perpendicularity of boom members in mobile platforms In connection with a pair of articulated booms there is a leveling system consisting of a sprocket wheel at the base of the lower boom and a co-acting sprocket wheel at the free end of the upper boom with chains and rods interconnecting the two sprockets ... | 03/28/1978 |
