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8172265 |
Vehicle for deploying a mobile surveillance module
A surveillance module may be deployed from a vehicle. The vehicle to deploy the surveillance module includes a first portion configured to accommodate a user to operate the vehicle. A second...
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8151935 |
Lifting and positioning apparatus
A lifting and positioning apparatus (10) including a base support (14), an elevator mechanism (12) having an upper and a lower end; an actuator (21) for operating the elevator mechanism between a...
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7726690 |
Vehicle for deploying a mobile surveillance module
A surveillance module may be deployed from a vehicle. The vehicle to deploy the surveillance module includes a first portion configured to accommodate a user to operate the vehicle. A second...
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7493987 |
Platform load sensing for vertical lifts
A scissors lift includes a scissors arm assembly secured at one end to a base and coupled with a lift mechanism that expands and contracts the scissors arm assembly. A platform is supported at an...
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7448470 |
Maintenance stand
A wheeled maintenance stand for aircraft has a worker platform elevated by a pair of double scissor linkages, which have track and follower connections with a mobile base frame and the worker...
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7383923 |
Elevating load platforms
An elevating load platform comprising a base member and a load supporting member interconnected by a linkage means that facilitates vertical movement of the load supporting member generally...
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7093691 |
Portable scissor-lift-assembly
A lift assembly includes a first platform provided with a top surface, a pair of opposed sides, and wheels and brackets connected to one of the sides for rotating the assembly. A plurality of...
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6973997 |
Pollution containment apparatus for making a penetration in a ceiling or wall of a building or other structure
A pollution containment apparatus for removal of polluted material from a ceiling and/or a wall. The apparatus has a platform which can support a workperson and can be raised and lowered. A support...
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6883641 |
Mobile elevator working and load-lifting platform
A ground-movable load-lifting vehicle for lifting a load over ground. The vehicle comprises a platform bed, a ground-movable carriage, and an extendible scissor linkage assembly supporting the...
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6761248 |
Adjustable height platform suitable for installation on a vehicle
Variable height device includes a platform and a lifting mechanism for raising the platform relative to its base. The lifting mechanism may include a scissors lift connected to the platform and a...
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6651775 |
Low level scaffold with ballscrew drive
A low level scaffold with ball screw drive is a lightweight, mobile, compact, electrically activated, self-erecting, scissor-type lifting platform. The electronic system utilizes an electric motor...
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6595322 |
Working platform assembly
A working platform assembly, includes a platform, and a scissor-type mechanism for extending and retracting the platform. The scissor-type mechanism has a plurality of superimposed pairs of arm...
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6571913 |
Multipurpose machine
A multipurpose machine is provided with independently operable scissors lift functionality and fork lift functionality enabling the machine to perform a number of tasks such as moving personnel and...
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6460653 |
Combined trailer and hunting stand operable between elevated and collapsed positions
A portable, collapsible hunting box enclosure is constructed on a wheeled trailer. The hunting box enclosure may be raised and lowered through a scissor action support structure mounted on the...
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6425459 |
Aerial work platform apparatus with anti-tipping supplement
Aerial work platform apparatus comprising a vehicle, a work platform, a lift on the vehicle for elevating and lowering the work platform, and a stabilizer for inhibiting tipping over of the...
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6276489 |
Flanged cross tubes for use in scissors linkages
A flanged link cross tube (1) for use in pivotal connections of beams (10) that locates weld roots (5) to the outer mating surface of beam (10) and flange (4). As the beams (10) rotate about a...
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6158550 |
Safety guard for scissor lift
An expandable safety guard for a scissor lift is disclosed. The safety guard has a plurality of pivoting plates or blades which expand to create a barrier preventing insertion of objects and body...
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6050365 |
Scissors-type work platform lift machine with electro-mechanical based lift actuation arrangement
A scissors-type work platform lift machine includes a mobile chassis having rear stationary wheels and front steerable wheels, a scissors lift mechanism mounted at a lower end on the chassis, a...
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6044927 |
Work platform lift machine with scissor lift mechanism employing telescopable electro-mechanical based lift actuation arrangement
A scissors-type work platform lift machine includes a chassis, a work platform, a scissors lift mechanism, and a telescopable electro-mechanical actuation arrangement. The work platform is disposed...
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5992562 |
Scissor lift control apparatus
A controller for a scissor lift control system includes a multiplexing device for lessening the number of conductor lines sent to the controller. The controller includes a microprocessor, and it...
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5390760 |
Safety guard for scissor lift
A movable safety guard mechanism for use with a motorized scissor lift is provided. The guard mechanism includes two side assemblies which pivot about a point carried on the chassis of the lift. As...
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5297653 |
Pickup truck mounted lift apparatus
A stable lift apparatus for a pickup truck includes a base which is supported on the sidewalls of the cargo compartment. Each of a pair of scissor assemblies has two lifting arms having the front...
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5192053 |
Device for initiating a lifting movement in a lifting device
The invention relates to a device for initiating a lifting movement in a lifting mechanism, for instance in lifting tables, of the type of which includes at least one first lifting arm (3) and one...
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5145029 |
Self-storing maintenance stand for a scissor lift aerial work platform
A self-storing maintenance stand for a scissor lift aerial work platform wherein a pair of arms are freely pivoted on each side of a stack of pivotally connected scissor arms at the medial portion...
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5109951 |
Device for the curved displacement of an object in contact with a surface
Device for the curved displacement of an object in contact with a surface, such as a convex, concave or complex surface, comprising a vertical support frame, arranged in the vicinity of the...
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5109952 |
Mobile and adjustable scaffold system for tunnel roofing and other applications
An improved scaffold system suitable for tunnel roofing and siding, and other applications above and below the ground is disclosed. This invention is a diesel powered, hydraulically actuated,...
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4930598 |
Scissors lift apparatus
A scissors lift apparatus having a wheeled tube chassis and a platform connected together by one or more scissors arm assemblies, each scissors arm assembly including a center arm and two outside...
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4684314 |
Pipe handling apparatus
A pipe handling apparatus is adapted for transferring oil well pipe to and from a drilling rig. The apparatus includes a transportable chassis having tracks for supporting and guiding a...
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4614251 |
Load raising vehicle and method
A vehicle and method for raising elongated objects, especially for raising pipes and the like to a ceiling structure in the construction of a building. The vehicle has a pair of transversely...
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4576249 |
Device for fighting fires in highrise buildings and towers
A device for fighting fires in highrise buildings and towers is disclosed, whereby a pair of parallel arranged platforms are provided for alternative ascension up the side of the building in...
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4546852 |
Adjustable service platform apparatus for a gantry crane
An adjustable service platform apparatus for a gantry crane has an elongated base frame generally comforming in size and shape to a conventional load carrying lifting spreader, and twin service...
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4534544 |
Lift
A lift consists of a platform that the article to be lifted rests on and a scissors jack that is attached to the bottom of the platform and that can be spread up out of an extended position with...
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4526346 |
Self-contained elevating table
An improved self contained elevating table suitable for loading dock and the like load lifting operations. The platform is supported by at least one pair of scissor legs the opening of which is...
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4467893 |
Folding fork lift with a multiple telescoping top lift attachment
An attachment for a lift truck includes a base unit attachable to a vertically movable carriage of the lift truck, a lower stage slidably engaged on the base unit, at least one upper stage slidably...
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4391345 |
Elevatable scaffold
An elevatable scaffold including a base and a platform connected therebetween by a lift assembly movable between a collapsed position and extended positions for elevating the platform above the...
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4356887 |
Rotatable platform assembly
A rotatable platform assembly having upper and lower frames coupled together for rotation of the upper frame relative to the lower frame and about a first and fixed vertical axis. A large diameter...
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4282794 |
Self-propelled off-road vehicle
A self-propelled off-road vehicle particularly adapted for military use against targets such as tanks. The vehicle chassis mounts an elevatable support platform to which an operator platform is...
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4245441 |
Telescoping aerial lift
An aerial lift is described which has a pivotable boom with a load end and a pivot end. The boom is constructed such that, as the pivot end of the boom pivots upwardly, the load end is raised...
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4162873 |
Extensible boom lift
A workpiece lift including a pivotable boom with a pivot end that moves horizontally as the load end of the boom is raised and lowered, allowing the load end to move along a substantially vertical...
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4130178 |
Elevating device
An elevating device is described having one or more pairs of crossed scissors members, each member having at least two telescoping sections. The scissors members are mounted for pivotal movement...
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4126974 |
Expandable beam structure
The invention relates to an expandable beam structure comprising a plural-sided structure, each side formed of consecutive pairs of scissor links pivotally connected end-to-end to form a side. The...
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4088203 |
Adjustable scaffold
An adjustable scaffold having a platform supported from a base by at least two sets of scissors connectors, and a lifting means for adjusting the platform between stored and elevated positions. The...
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4070807 |
Aerial lift
An aerial lift including a pivotable boom with a pivot end that moves horizontally as the load end of the boom is raised and lowered, allowing the load end to move along a substantially vertical...
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3961681 |
Mobile scaffold with series-connected hydraulic motor drive
A base frame with four wheels, two of which are powered by separate hydraulic motors connected in series so that the fluid flowing through one motor then flows through the other. A speed control is...
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3920096 |
Vertical hydraulic ram system for scissors assembly scaffold
A scaffold having a base frame and a platform mounted on a vertically extensible and contractable scissors assembly, the scissors assembly comprising a plurality of ascending and interconnected...
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RE28455 |
Portable elevator working and load-lifting platform
The invention teaches the use of a hydraulic system having primary ram booster means to start the raising of a platform coacting with other ram means to raise and lower the platforms. The platform...
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3889778 |
Platform lift
This disclosure describes a scissors type platform lift device which comprises a narrow rectangular base and a corresponding narrow rectangular platform substantially parallel to and above the...
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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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3817346 |
MOBILE SCAFFOLDING
There is disclosed a mobile scaffolding which is powered by self contained electrical storage batteries. The electric drive is mechanically linked to the lift mechanism of the scaffolding by...
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3750846 |
LAZY TONG TYPE BOOM STRUCTURE WITH EXTENSION AID
A boom structure including a plurality of crossed links having their centers and ends pivotally connected to define a lazy tong structure includes a compression spring positioned to exert a force...
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