Matches 1 - 50 out of 116 1 2 3 >
Match Document Document Title
7246684 Boom lift vehicle and method of controlling boom angles  
A boom lift vehicle includes a tower boom pivotally coupled at one end to a vehicle base for tower lift function and rotatable relative to the vehicle base for swing function. A main boom is...
7128186 Airport bridge people lift  
The present invention is an aircraft people lift system for use in combination with a movable elevated passenger walkway/bridge having an attached auxiliary access stairway and landing platform....
6543578 Analog control  
A control system for three mechanisms of a machine may include a pair of pivotable or rotatable structures and a telescoping or longitudinally urgeable structure that are coupled to a single...
6460652 Boom arrangement for rock drilling apparatus  
A boom arrangement for a rock drilling apparatus includes at least one boom and an actuator, e.g., a passenger cage, arranged at a free end of the boom. The boom also includes at least two boom...
6439341 Apparatus for monitoring loading of a lift  
A load lift comprising a lifter and a linkage on the lifter carrying a load support for movement therewith to different elevations. The linkage is a four-member linkage which includes a first...
6390312 Lift structures and lifting arrangement therefor  
Load-bearing apparatus, such as a boom lift, including first and second arm portions, in which at least one element, such as a hydraulic cylinder, is provided for selectively imparting a...
6325749 Robot vehicle for hot-line job  
A robot vehicle for hot-line job for transmission and distribution lines which comprises an insulating boom formed of an insulating material at a tip end stage of multiple stage booms, a base end...
6276488 Crane extension system  
A crane extension system is provided for use with a crane having a boom, the improvement having a mounting platform assembly and a mounting basket, with the mounting basket secured to the mounting...
6024191 Lift apparatus having an articulated double parallelogram boom assembly  
A lift apparatus includes a superstructure frame support, a riser, and an articulated parallelogram boom assembly operatively connected between the superstructure frame support and the riser. The...
5727645 Aerial lift including a detachable end-hung basket  
An aerial lift comprising a self-propelled vehicle such as a truck or the like having a rotatable pedestal mounted thereon. An elongated telescopic boom has one end pivotally secured, about a...
5538207 Boom-mountable robotic arm  
A telescoping robotic arm for temporarily supporting energized power lines to enable repair or replacement of transmission poles, crossarms, insulators and the like. The robotic arm is connectible...
5286159 Mobile vehicular apparatus with aerial working device  
A mobile vehicular apparatus includes an aerial control cabin mounted on a tip end of a telescopic boom by a vertical shaft for turning movement about the vertical shaft, and an aerial working...
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...
5249643 Vehicular self-propelled aerial work platform and telescoping parallelogram boom therefor  
A vehicular self-propelled aerial work platform wherein a lower telescopic boom assembly is connected to a riser frame assembly having an upper telescopic boom assembly also connected thereto. A...
5113969 Displaceable working platform with extensible boom  
A displaceable working platform comprising a main frame having stabilizing extension posts secured thereto for immovably securing the main frame to surrounding surfaces. A displaceable platform is...
5107954 Control device for mobile vehicular apparatus with aerial platform  
A mobile vehicular apparatus for moving an operator around a three-dimensional aerial work location such as an electric cable or wire supported on posts includes a mobile vehicle having a vehicle...
5062245 Telescopic beam  
A telescopic beam has a cross-section comprising an array of members (11-17) whose cross-section are of essentially spiral or modified spiral form such that members have lengths of identical (or...
5021917 Control panel power enabling and disabling system for aerial work platforms  
A control panel enabling and automatically disabling system is coupled between a source of electrical power and a plurality of motion controls on an aerial work platform. Upon activation of a...
4979588 Overhead impact sensing system  
An electrical deactivation circuit and a two piece overhead guard assembly including two separately movable bar members which extends upward and over the head of an operator located on the upper...
4962827 Extendable, elevatable, rotatable, collapsible boom and basket for vehicles  
An extendable, elevatable and rotatable boom carrying at its outer end a basket which is longitudinally collapsible in order to reduce the longitudinal space occupied by the collapsible basket, the...
4946027 Boom conveyor  
A boom conveyor including a cantilevered conveyor section having an operator's platform at its outer free end is disclosed. The conveyor section is mounted so that in use the outer free end is...
4946003 Mobile and aerial lift having offset boom support  
A mobile aerial lift having a vehicle of the type having a frame with a longitudinal axis and ground-engaging wheels carried by the frame. An operator's driving station is carried by the frame. An...
4936414 Detachable self-contained-aerial-maintenance platform  
An apparatus for maintaining and inspecting a dockside container crane includes a framework and a base for supporting thereon a rotatable turret having a telescopic boom and platform member. The...
4917213 Power transmission  
An electrohydraulic control system that includes a plurality of electrohydraulic devices coupled to a remote master controller by a high-speed serial communication bus. The bus has a serial...
4852690 Aerial ladder tower with pretensioned truss members  
In a ladder tower having multiple telescoping sections, each section includes a pair of longitudinally extending, laterally spaced apart truss members and a plurality of longitudinally spaced...
4809472 Carrier track assembly for extensible and retractable boom machines  
A carrier track assembly for extensible and retractable boom machines wherein the carrier track assembly is positioned within the telescopic boom sections and has one end connected to the extension...
4793437 Portable lift with telescopic booms and load-carrying apparatus  
Inclined telescopic booms actuated and regulated from the ground with detachable rungs forming a level track between the telescopic booms. A two-stacked load carrier, both stages on crawler type...
4784278 Lock mechanism for crane device  
A crane apparatus is provided with a lock mechanism which releasably locks the pivot axle of the personnel bucket against pivotal movement relative to the upper boom arm. The pivot axle is affixed...
4775029 Collapsible tower boom lift  
A collapsible boom lift comprised of upper and lower telescoping boom assemblies. The upper boom is pivotally connected to an upright support member which is pivotally connected at its lower end to...
4744718 Aircraft service vehicle  
A support vehicle particularly for use with aircraft wherein the vehicle, in a non-operative mode is maintained at low overall height and size for ease of transport and storage but includes an...
4726445 Mobile lift  
A mobile lift comprises an undercarriage structure having a tow bar (1), a towing extension (9) and road wheels (7) supporting a main swivel bearing (6) for a lift boom (5) with a basket or...
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...
4706779 Transportable, twin telescopic arm platform hoist  
The present invention is a transportable hoist consisting of a twin-arm telescopic unit comprising a given number of rectangular telescopic elements, which can be extended longitudinally by means...
4687073 Hydraulically elevatable access equipment  
Access equipment including a vehicle (10) on which stands a mast (14) movable between horizontal and vertical positions and mounted for rotation about an axis (13). The mast is telescopically...
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...
4676339 Self-contained-aerial-maintenance platform  
An apparatus for maintaining and inspecting a dockside container crane which includes at least one aerial work platform unit rigidly attached to one end of an ISO container. A spreader attached to...
4657109 Attachment jib for cranes  
An attachment jib for supporting various working devices, such as a pipe manipulator, includes a support base which can be rigidly coupled removably with existing elements on the nose block of a...
4625830 Work platform centering apparatus  
There is provided an over-translation sensing and centering apparatus for a scissors lift work platform comprising a linear cam arranged with electronic sensing means to detect an out-of-balance...
4589519 Vehicle mounted fire escape chute  
A telescoping, extensible fire escape chute is mounted on a vehicle carrying a telescoping boom having a passenger basket mounted at an upper end. The fire escape chute is formed of a plurality of...
4580659 Combination fire escape tube and rescue vehicle  
A combination fire escape tube and rescue vehicle is provided. The fire escape comprises an upper, supporting entry ring member and a mesh tube attached to this upper support member, the mesh tube...
4558758 Prime mover  
A prime mover having a central body with a plurality of elongated legs pivotally connected to said central body for movement both up and down and sideways and individual steerable drive means on...
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...
4511015 Manlift  
A manlift having improved stability and safety. A telescoping vertical mast driven by a package of integrally attached cylinders is attached to a rotating base plate slightly offset from the center...
4506480 Extensible boom construction for self-propelled aerial work platforms  
An extensible boom assembly which has a tubular outer section, a tubular intermediate section and a tubular inner section supported in a telescoping relationship, and containing a flexible power...
4458780 Mobile cranes or aerial lift platforms  
A mobile crane or aerial lift platform vehicle wherein the chassis comprises a horizontally disposed solid metal slab carrying axle/outrigger mountings and on which the boom or jib turntable is...
4456093 Control system for aerial work platform machine and method of controlling an aerial work platform machine  
An electronic control system allows control over the safe operation of an aerial work platform machine. The control system uses a firmware programmed digital processor to execute a sequence of...
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...
RE31400 Self propelled and extensible boom  
A self-propelled rotatable hydraulic lift having a body with an extensible boom pivotally attached to the upper rear portion of a counterweight and terminating in a self-leveling workman's...
4396093 Ladder or boom extension system  
A ladder or boom extension system includes a base section, at least one movable section in telescoping arrangement with the base section, and a piston rod fixedly connected longitudinally of the...
4366591 Automatic safety gangplank  
The automatic safety gangplank includes a plurality of cooperating ladder sections which are extendable from a fully telescoped or retracted position to an elongated position for extension from a...
Matches 1 - 50 out of 116 1 2 3 >