A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A telescopic loft ladder has two stiles with sections that are telescopically collapsible within each other, rungs having lateral ends each connected to respective sections the stiles, retractable pins in the ends of the rungs for engaging holes in the stile sections to retain them in an extended position, and levers on the rungs that automatically operate when two rungs contact one another to disengage pins of the upper of the contacting rungs from the holes to permit collapse of the next higher rung. Each uppermost stile section is rotatable relative to the section connected to the uppermost rung of the ladder and has circumferentially and axially offset pin receiving holes. At least one resilient element biases the next to uppermost rung away from the uppermost rung to ensure that the locking pin of the uppermost rung engages a hole in the uppermost stile section as the ladder is lowered.
A telescopic loft ladder has two stiles with sections that are telescopically collapsible within each other, rungs having lateral ends each connected to respective sections the stiles, retractable pins in the ends of the rungs for engaging holes in the stile sections to retain them in an extended position, and levers on the rungs that automatically operate when two rungs contact one another to disengage pins of the upper of the contacting rungs from the holes to permit collapse of the next higher rung. Each uppermost stile section is rotatable relative to the section connected to the uppermost rung of the ladder and has circumferentially and axially offset pin receiving holes. At least one resilient element biases the next to uppermost rung away from the uppermost rung to ensure that the locking pin of the uppermost rung engages a hole in the uppermost stile section as the ladder is lowered.
TELESCOPIC LOFT LADDER
TELESKOPISCHE DACHBODENLEITER
ÉCHELLE TÉLESCOPIQUE ESCAMOTABLE
WESTON RICHARD (author)
2017-07-05
Patent
Electronic Resource
English