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8413764 |
Ladder safety device, systems and methods of arresting falls from ladders
A ladder safety device, systems and methods of arresting falls from ladders are provided. The ladder safety device includes a safety guide that extends along the length of an extension ladder. The... |
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8251177 |
Collapsible access tower
A collapsible access tower has a chassis 10 supporting a pair of road wheels 11 and outriggers 16,17 to impart stability when in use, and a pair of extensible multi-section columns 26,50 carrying... |
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6298945 |
Firefighters' remote roof venting apparatus
A roof venting apparatus is mounted to a firefighting vehicle's aerial extension ladder, where a semi-cylindrical, double-pointed lance is dropped and raised onto and through the roof of a burning... |
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5368317 |
Fire truck torque box chassis frame
A torque box chassis frame for firefighting vehicles or the like constituting a platform for extendible aerial ladders. The vehicle torque box chassis frame includes elongated lower and upper... |
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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... |
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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... |
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4094381 |
Aerial extension ladder
A truck mounted telescopically extensible ladder is rotatably connected to a turret and pivoted about an elevation cylinder. A double acting-double end hydraulic cylinder, mounted in the base... |
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3966018 |
Working platform lifting apparatus for aerial ladder truck
A working platform lifting apparatus for an aerial ladder truck, wherein the working platform movable up and down along the ladder is arranged so that it does not interfere with the extension and... |
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3966017 |
Working range indicating device for aerial ladder truck
A working range indicating device for an aerial ladder truck is arranged so that the variable length and vertical angle of the ladder are mechanically detected and the detected values are... |
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3921758 |
Aerial ladder truck
There is provided an aerial ladder truck having suitable means whereby obstacles such as ice and snow to the rolling movement of the ladder extending and contracting rollers and lifter raising and... |