US 12,291,921 B2
Depressurized multilayered glass panel
Akito Takeuchi, Tokyo (JP); Tatsuhiro Nakazawa, Tokyo (JP); and Atsushi Miki, Tokyo (JP)
Assigned to NIPPON SHEET GLASS COMPANY, LIMITED, Tokyo (JP)
Appl. No. 17/910,983
Filed by NIPPON SHEET GLASS COMPANY, LIMITED, Tokyo (JP)
PCT Filed Feb. 24, 2021, PCT No. PCT/JP2021/006765
§ 371(c)(1), (2) Date Sep. 12, 2022,
PCT Pub. No. WO2021/182099, PCT Pub. Date Sep. 16, 2021.
Claims priority of application No. 2020-044766 (JP), filed on Mar. 13, 2020.
Prior Publication US 2023/0141217 A1, May 11, 2023
Int. Cl. B32B 3/02 (2006.01); B32B 3/08 (2006.01); B32B 17/06 (2006.01); E06B 3/66 (2006.01); E06B 3/663 (2006.01)
CPC E06B 3/66304 (2013.01) [B32B 3/085 (2013.01); B32B 17/06 (2013.01); E06B 3/6612 (2013.01); B32B 2307/304 (2013.01); B32B 2307/558 (2013.01); B32B 2607/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A depressurized multilayer glass panel comprising:
a first glass plate;
a second glass plate disposed to face the first glass plate;
a sealing portion provided around respective entire outer peripheries of the first glass plate and the second glass plate to form an air gap portion between the first glass plate and the second glass plate, the air gap portion sealed in a depressurized state; and
a plurality of columns disposed between the first glass plate and the second glass plate, each column including contact surfaces in contact with respective facing surfaces of the first glass plate and the second glass plate and a non-contact portion provided around the contact surface and spaced apart from the facing surface of the first glass plate or the second glass plate,
wherein the non-contact portion is configured such that when the facing first glass plate or second glass plate is deformed by being subjected to a first external force, at least a part of the non-contact portion is contactable with the deformed first glass plate or second glass plate;
the columns each further includes a non-contact surface extending outward continuously from a periphery of the contact surface and spaced gradually farther apart from the facing surface of the first glass plate or the second glass plate toward an outer periphery of the column; and
the columns each have a gradient angle between the facing surface of the first glass plate or the second glass plate and the non-contact surface, the gradient angle being such that when the first glass plate or the second glass plate is deformed by being subjected to the first external force, at least a part of the non-contact surface is contactable with the deformed first glass plate or second glass plate, the gradient angle of the column being set to 0.4 degrees or more.