US 11,808,070 B2
Retractable sliding door with automatic alignment to the wall during the closing phase
Paolo Fornasari, Cordenons (IT)
Assigned to TERNO SCORREVOLI S.P.A. UNIPERSONALE, Varedo (IT)
Appl. No. 17/421,682
Filed by TERNO SCORREVOLI S.P.A. UNIPERSONALE, Varedo (IT)
PCT Filed Dec. 24, 2019, PCT No. PCT/EP2019/025483
§ 371(c)(1), (2) Date Jul. 8, 2021,
PCT Pub. No. WO2020/143898, PCT Pub. Date Jul. 16, 2020.
Claims priority of application No. 102019000000460 (IT), filed on Jan. 11, 2019.
Prior Publication US 2022/0098911 A1, Mar. 31, 2022
Int. Cl. E05D 13/00 (2006.01); E05D 15/06 (2006.01); E05D 15/10 (2006.01); E06B 3/46 (2006.01)
CPC E05D 15/0656 (2013.01) [E05D 15/1042 (2013.01); E06B 3/4645 (2013.01); E05D 2015/1055 (2013.01); E05Y 2201/46 (2013.01); E05Y 2900/132 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A retractable sliding door with automatic alignment to an adjacent wall during a closing phase, the retractable sliding door being arranged to alternatively open and close a through space made along said wall, the retractable sliding door comprising:
a lower guide configured for attachment to a floor and an upper guide forming a support beam in which a pair of projections extend and form opposing sliding tracks which support two or more sets of wheels, each set including a pair of wheels with a single wheel positioned between each pair of wheels, each set of wheels being borne by a common shaft and combined with a frame to form a carriage;
wherein the lower guide interacts with a lower roller arranged to fit into a first shaped channel which is configured as a lower mixed-line extension that is provided along a lower head of the sliding door; the upper guide provided with a second shaped channel arranged with an upper mixed-line extension which is substantially parallel to and has a same arrangement as said first shaped channel;
wherein an upper head of said sliding is suspended from the frame by which the carriage is fixed to opposing ends of said upper head via opposing plates from which respective facing pins protrude in opposite directions, said sliding door being suspended to the frame with interposition of a foil having a lower edge which is provided with opposite and complementary engagement seats which receive said pins of the plates.