Mobile ladder-scaffolding system
OwnerRonald S. Jacobsinventor
Life of this patent
Estimating the term…
Abstract
A track supported mobile ladder-scaffolding system with self-adjusting lateral supporting structure at the top for engaging a roof by means of a vehicle which engages track structure attachable to a roof by clamping: safety hook structure prevents support failure at the top at roof-engaging and ladder engaging points of the mobile portion of the system.
Claims15
In a system of mobile scaffolding including vertical structure with a plurality of ladders and means mounting the plurality of ladders movably as a unit on a bottom track for shifting location along the wall of a build- having roof structure, a work platform in said system having means for engaging rung structure of said ladders, and lateral means engaging the roof of the building to stabilize the vertical structure, the improvement comprising:
- at least one vertical track member on an upper portion of a said ladder, the lateral means including:
- horizontal track structure, means for fixing the horizontal track structure to a roof, a vehicle, first movable captive-engagement of the vehicle with the vertical track member, and second movable captive-engagement of the vehicle with a portion of the horizontal track structure.
Dependencies are inferred from the claim text.