A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A movable barrier system wherein the trolley system comprises at least two guiding rail portions. At least one of the guiding rail portions is supported by a support member secured to the headroom area of the building support structure. The trolley traverses the at least two guiding rail portions by a hinged coupling device.
A movable barrier system wherein the trolley system comprises at least two guiding rail portions. At least one of the guiding rail portions is supported by a support member secured to the headroom area of the building support structure. The trolley traverses the at least two guiding rail portions by a hinged coupling device.
Hinged rail for barrier operators
SKOTTY BRIAN ROY (author)
2019-10-01
Patent
Electronic Resource
English