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Document |
Document Title |
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5268591 |
Upper power supply arrangement for mobile vehicular apparatus with aerial platform
A mobile vehicular apparatus for moving an operator around a three-dimensional aerial work location includes a mobile vehicle having a vehicle body, a boom upwardly extensibly and downwardly...
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4947959 |
Folding ladder
A folding ladder comprising of four straight sections each consisting of two uprights and four rungs equally spaced. The sections are connected with insulating hinged joints which can be tightened...
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4883145 |
Ergonomic aerial basket
A simple apparatus is disclosed that reduces the risk of low-back injury to workers in elevated, partially enclosed, aerial baskets. The preferred embodiment basically comprises a circular well...
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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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4842098 |
Adjustable folding ladder
The invention is an adjustable folding ladder that can be easily altered in its length and shape to adjust to the proper working height and angles for the user. With the fiber glass nylon hinges,...
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4799573 |
Adjustable personnel platform
An adjustable personnel platform (38) is rotatably fastened on a lift tower end, with a carrying arm (42) and a pivot link (43) in the pivot plane of the elements (15, 21, 26) of the lift tower. It...
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4679653 |
Highly maneuverable insulated man lifting aerial crane for use in servicing overhead high-voltage electrical transmission lines
A powerful, highly maneuverable, man-lifting crane has three vertically articulating sections which swivel on a common turret for horizontal positioning, the third or outer section of the group...
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4676340 |
Telescopic boom assembly having high dielectric properties
A telescopic boom assembly is disclosed. The assembly includes a plurality of boom members having at least first, second and third boom arms telescopically disposed within each other. The first...
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4553632 |
Auto-leveled crane boom man baskets
An automatic leveling device for crane boom supported work baskets includes a weighted and damped plumb sensor coupled to a first potentiometer and a second potentiometer for measuring the relative...
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4534444 |
Insulated boom structure for telescoping aerial lift
The invention provides improved telescopic boom structure for aerial lifts, including the provision of a lower boom structure outer end portion made of electrical insulating material, which...
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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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4254846 |
Apparatus and method for removing liners from their outer containers
An apparatus and method for the removal of insulating liners and the like from their outer containers is disclosed. The apparatus comprises a strap attached to a hook means. The hook means is...
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4187927 |
Remotely actuated auxiliary pressurization system
The present invention is a remotely actuated battery powered, auxiliary pressurizing system for hydraulically actuated lift arm devices which system is driven independently of the principal power...
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4044856 |
Lifting equipment having a boom structure and a control mechanism for use therewith using a flexible light guide
Lifting equipment having a support structure and a boom structure mounted on the support structure with a workman's platform carried by the boom structure. The boom structure includes means for...
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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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3828941 |
HYDRAULIC JIB
A dielectric jib at the end of a hydraulically operated boom in which the jib is slidably supported in a sleeve, the sleeve being connected to a rotatable bushing surrounding a shaft extending to...
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3757895 |
AERIAL LIFT VEHICLE
An aerial lift vehicle having a carriage rotatably mounted on the vehicle, an electrically insulated boom support on said carriage and an aerial bucket pivotally carried at the upper end of said...
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3642096 |
INSULATING LINER FOR MAN-CARRYING BUCKETS
A man-carrying bucket for utility trucks in which a man is elevated in the bucket to work on electric powerlines, lamps and the like. The bucket is constructed of molded plastic reinforced with...
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3631939 |
MOBILE AERIAL TOWER
A mobile aerial tower incorporating an articulated boom having extensible boom elements mounted therein at least one of which is made of a dielectric material and with a rotatable and tiltable...
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3625305 |
TRANSPORT BASKET AND METHOD OF PRODUCING THE SAME
A transport basket for raising personnel or material to elevated positions from a vehicle having an elevatable basket supporting structure thereon. The basket comprises a liner of electrical...
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3554319 |
STRUCTURES
In a lifting or load-supporting structure for use in work on high voltage installations there is provided a boom formed wholly or part by a tubular beam made of material of high electrical...
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3489243 |
INSULATED REMOTE CONTROL APPARATUS FOR ARTICULATED AERIAL DEVICE
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3320524 |
Apparatus including electrode means for determining electrical condition of aerial booms for energized line working
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3301346 |
Mobile aerial tower
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3295633 |
Quick detachable basket for aerial towers
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3233700 |
Aerial tower mechanism
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3191716 |
Mobile lifting equipment
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3169602 |
Mobile aerial tower structure
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3159240 |
Aerial lifts for energized line working
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3149694 |
Bucket adaptor
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3146853 |
Boom extension
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3139948 |
Method and apparatus for working energized conductors
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3136385 |
High voltage aerial lift and control therefor
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3108656 |
Lifting apparatus for electric-line construction or maintenance workers
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3108655 |
Vehicle tower
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3087581 |
Fiberglas structural member and method of making same
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3056510 |
Derrick for vehicles
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3043394 |
Boom attachments
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3022854 |
Mobile aerial tower
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3005512 |
Aerial supporting structure for line construction and maintenance workers
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