A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
AIR DAMPER AND TELESCOPIC LADDER ASSEMBLY WITH SUCH AN AIR DAMPER
The invention relates to a telescopically extendable and collapsible ladder assembly having a bottom ladder section, a top ladder section, and one or more intermediate ladder sections. The top ladder section and the one or more intermediate ladder sections are collapsible ladder sections,multiple of which are provided with air dampers, being mounted on a bottom end of tubular stile members of the collapsible ladder sections. The air damper comprises a barrier member that defines one or more throttle openings,a valve member, and an actuator member. The actuator member pushes the valve member into the throttle position during collapse of the collapsible ladder section, and pushes the valve member into the non-throttle position during extension of the collapsible ladder section.
AIR DAMPER AND TELESCOPIC LADDER ASSEMBLY WITH SUCH AN AIR DAMPER
The invention relates to a telescopically extendable and collapsible ladder assembly having a bottom ladder section, a top ladder section, and one or more intermediate ladder sections. The top ladder section and the one or more intermediate ladder sections are collapsible ladder sections,multiple of which are provided with air dampers, being mounted on a bottom end of tubular stile members of the collapsible ladder sections. The air damper comprises a barrier member that defines one or more throttle openings,a valve member, and an actuator member. The actuator member pushes the valve member into the throttle position during collapse of the collapsible ladder section, and pushes the valve member into the non-throttle position during extension of the collapsible ladder section.
AIR DAMPER AND TELESCOPIC LADDER ASSEMBLY WITH SUCH AN AIR DAMPER
LUFTDÄMPFER UND TELESKOPISCHE LEITERANORDNUNG MIT EINEM SOLCHEN LUFTDÄMPFER
AMORTISSEUR PNEUMATIQUE ET ENSEMBE D'ÉCHELLE TÉLESCOPIQUE AVEC UN TEL AMORTISSEUR PNEUMATIQUE
LAMPE CASPAR BERNARD (author)
2020-01-01
Patent
Electronic Resource
English
IPC:
E06C
LADDERS
,
Leitern