SECTIONS SET FOR ASSEMBLY OF DOOR AND WINDOW BLOCKS Russian patent published in 2003 - IPC

FIELD: construction engineering, particularly, designs of polyvinyl chloride sections used, mainly, for framing of apertures of buildings and structures, for instance, window and door apertures. SUBSTANCE: set of sections for assembly of window and door blocks has made of PVC-base material, at least, one section forming frame, preferably. L-shaped in cross-section, at least, one section forming leaf, preferably, Z-shaped in cross-section, and, at least, one section forming impost, preferably, T-shaped in cross-section. Impost section is formed by flange and post whose side walls have parallel parts and parts inclined to each other in place of joining the flange with formation in cross-section of conjugation over arc of circle with central angle exceeding 90 deg, preferably, equaling 92-100 deg. Formed in place of conjugation is draining recess running above inclined partition made in form of trough and at angle of 50-54 deg to side wall plane and through internal partition smaller than said partition by 5- 15%. Draining recess length in longitudinal section equals 8.0-9.0 radii of recess end roundings. Post is separated into, preferably, five preliminary chambers by partitions parallel to flange. One of chambers found between pair of other preliminary chambers has bosses facing inside for installation of reinforcing section with provision of air space between post and reinforcing section excluding direct contact with chamber walls and formation of cold bridges. Reinforcing section is protected from structure external side by, at least, two preliminary chambers. Made on post are bosses with auxiliary channels for fastening of impost connector in installation of cross-member in window aperture. Longitudinal axes of frame reinforcing section and impost reinforcing section are located in same plane parallel to front plane of block and forming rigid framework. EFFECT: increased heat- and sound-insulating properties of PVC sections, their reliability and longevity due to increased area of angular joints with provision of effective withdrawal of condensate. 3 cl, 7 dwg