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Document |
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7370725 |
Motorized rungless ladder
A device supported by a ground surface and a structure for at least one of elevating and descending a user. The device includes a first guide rail having a first channel extending along a length...
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7353817 |
Saw accessory for aerial work platform
A wall saw accessory is provided for an aerial work platform, where a wall saw is movably affixed on a track secured to a wall to be sawed. The accessory includes a saw/track manipulator fixable to...
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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...
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5944138 |
Leveling system for aerial platforms
A system for leveling a personnel carrying platform mounted on the end of an elongated vehicle mounted boom. A pendulum controlled hydraulic valve controls the application of fluid pressure to a...
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5868218 |
Mobile lift assembly
A lift assembly includes a work platform pivotally mounted on the end of a boom for rotation through 270° around a vertical post on the outer end of the boom. Rotation of the platform is effected...
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5269393 |
Brake mechanism for a boom supported occupant bucket
A vehicle mounted lift apparatus includes a boom having an L-shaped support arm pivotally suspended from the outer end thereof. An occupant supporting bucket is pivotally mounted on the L-shaped...
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5159989 |
Automatic hydraulic leveling system
An automatic leveling system for a four-wheel vehicle system having outrigger assemblies at each of the four corners of the vehicle chassis and in which each outrigger assembly has an outrigger pad...
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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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4763755 |
Bucket release assembly for aerial device
A release assembly for an aerial device for pivotally releasing a worker's bucket from an upright orientation to a horizontal orientation. The assembly consists of protrusions from the worker's...
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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...
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4537281 |
Two person aerial platform
This invention relates to aerial platforms capable of accommodating two occupants, and more particularly, to such devices which are especially suited for use with a hydraulic crane.
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4520894 |
Control wand for overhead personnel crane
The invention is a manually operable control wand for use with hydraulically actuated overhead personnel cranes or "Cherry Pickers". The wand is fixedly secured to a personnel carrying enclosure...
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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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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...
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4437543 |
Control system for cage supported by articulated boom
A control system for a personnel carrier attached to a boom which is displaceable by pressure fluid. The control system comprises at least one hand operable controlled handle axially rotatable in a...
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4160492 |
Control system for mobile self-propelled aerial lift
A mobile self-propelled aerial lift machine comprises a chassis, a swingable boom support structure mounted on the chassis, an elevatable telescopic boom mounted on the support structure and an...
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3830336 |
PERSONNEL BUCKET BRAKE FOR HYDRAULIC CRANES
A fluid-pressure responsive brake and actuation system therefor is disclosed which is operable to selectively brake the movement of a pivotally mounted, gravity leveled personnel bucket positioned...
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3809180 |
AERIAL PLATFORM APPARATUS HAVING PIPE GRABS
An aerial platform apparatus includes a wheeled chassis, an extensible boom mounted on the chassis for luffing and swinging movement, and a workman's platform carried by the boom. The platform is...
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3791484 |
MOBILE PLATFORM CARRYING MACHINE
A platform carrying machine, particularly useful for viaduct inspection, is mounted on a carriage and includes a platform-carrying boom structure mounted on the end of a horizontal support arm...
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3653461 |
HYDRAULIC ROTARY DAMPENER
A rotary dampener includes a cylinder with a piston threaded in the cylinder such that relative rotary motion between the cylinder and piston causes axial movement of the piston in the cylinder....
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3645359 |
APPARATUS FOR AUTOMATICALLY MAINTAINING THE ANGULAR POSITION OF AN AERIAL PLATFORM USED IN CONJUNCTION WITH A BOOM
Hydraulic apparatus for maintaining the angular position of an operator basket on the end of a three-section articulated boom is disclosed. A double acting hydraulic cylinder and rack and pinion...
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3487952 |
MATERIAL LIFT AND PRESS
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3384201 |
Tree crop harvesting apparatus
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3203503 |
Tree working machine
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3190391 |
Safety device for a basket
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3088609 |
Harvesting machine
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3047783 |
Remote control arrangements
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2973112 |
Fruit picker
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2927705 |
Orchard apparatus
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2798623 |
Fruit picking machine
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2787278 |
Apparatus for over-head service work
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