A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The sash restrictor 6 has a frame attachment member 16, engaged with a track 10 of a window jamb, pivotally connected to an arm 14 at end 22 by a first connection means 24, the other end 26 of the arm 14 is pivotally connected to a sash attachment member 18 engaging a channel 20 of a window sash 4 by a second connection means 28. Preferably, a pair of restrictors 6 are provided for a sash window having a pair of jambs, each having a track 10 in which the frame attachment member 16 can slide. The connection means 24,28 may comprise a friction fit sleeve around a fastener with a washer located between, and in contact with both, the arm 14 and the respective attachment member 16,18. Preferably, the sash attachment member is fixed in the channel, and has a fixed friction block with a recess in contact with an outer circumferential surface of the respective washer. The fasteners may be rivets and the washers made of compressible plastic providing sufficient axial and/or radial frictional forces acting between surfaces of the parts to control the rate of opening, and support weight of the sash in an open position.
The sash restrictor 6 has a frame attachment member 16, engaged with a track 10 of a window jamb, pivotally connected to an arm 14 at end 22 by a first connection means 24, the other end 26 of the arm 14 is pivotally connected to a sash attachment member 18 engaging a channel 20 of a window sash 4 by a second connection means 28. Preferably, a pair of restrictors 6 are provided for a sash window having a pair of jambs, each having a track 10 in which the frame attachment member 16 can slide. The connection means 24,28 may comprise a friction fit sleeve around a fastener with a washer located between, and in contact with both, the arm 14 and the respective attachment member 16,18. Preferably, the sash attachment member is fixed in the channel, and has a fixed friction block with a recess in contact with an outer circumferential surface of the respective washer. The fasteners may be rivets and the washers made of compressible plastic providing sufficient axial and/or radial frictional forces acting between surfaces of the parts to control the rate of opening, and support weight of the sash in an open position.
Sash restrictor
RICHARD SEHDEVA (author)
2017-06-07
Patent
Electronic Resource
English