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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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)...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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,...
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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...
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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...
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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...
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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...
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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...
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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...
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4059170 |
Fire engine construction
A boom carrying vehicle such as a fire engine having an extremely high-strength, low-weight frame including a chassis having front and rear wheels, a cab mounted proximate said front wheels, a...
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4053075 |
High lift mounting means for loader buckets
A loader comprises means mounting a loader bucket thereon for selectively moving the bucket substantially vertically between lowered and raised positions thereof. Such mounting means comprises...
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4047593 |
Actuating system for transportable articulated booms having raisable platforms
Transportable booms having lift platforms are now well established in the art. In the lift platform where the lift controls are located, there are means to operate an actuator and four bar linkage...
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4026519 |
Building panel placement apparatus
A machine for use in placing of a wall or ceiling panel in position which holds the panel firmly in place as it is nailed into the structure of a building. The machine is mounted on wheeled base...
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3964504 |
Leveling valve
A hydraulic valving mechanism for controlling an object in a normally level position such that upon a shifting of the same from level an actuating mechanism is driven to return the object to the...
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3958377 |
Lightweight high strength boom construction
An articulated boom of high strength to weight ratio is disclosed including an inner steel boom of modified trapezoidal cross-section including a top web, inclined opposed side webs and an...
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3891056 |
Hydraulically elevatable platforms
Access equipment of the kind comprising an articulated boom structure which consists of a first boom pivotally and preferably rotatably mounted on a vehicle or like supporting structure, and at...
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3882963 |
Access equipment
Access equipment for fire fighting purposes including an articulated boom structure having two booms, the structure being mounted on a turntable attached to a vehicle, each boom having ladder means...
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3877544 |
Stress balanced extendible boom structure
A lazy tong or scissor-type of extendible boom structure having one end mounted on a platform. The boom structure can be extended, elevated, and/or rotated independently by drive structure mounted...
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3856108 |
THREE WHEEL AERIAL PLATFORM APPARATUS
A three wheel aerial platform apparatus has a pair of aligned wheels at one end, a powered, steered single wheel at the other end and a boom having a platform at its free end. The chassis comprises...
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3844378 |
CONTROL SYSTEM FOR AN AERIAL DEVICE
This invention is a control system for an aerial device having movable beams, drive means for moving the beams, and a workman's basket supported on the upper end of the beams. The control mechanism...
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3828939 |
THREE-STAGE SELF-PROPELLED CRANE
The present invention relates to a crane that is provided with a principal or first hydraulic lifting stage, co-operating with a first lever system and with two secondary hydraulic stages for...
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3809182 |
REMOTE CONTROL CIRCUITS FOR HYDRAULIC MOTORS
A simplified remote control system for a plurality of hydraulic motors in which the transmitter and receiver controllers are simplified by providing for only a single proportional control member at...
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