초록 ▼

A panel intended for use as a vacuum enclosure, comprising a pair of spaced sheets defining between them opposite walls of the enclosure, and a spacer assembly located between the sheets and adapted to maintain the sheets at the desired spacing, said spacer assembly comprising a pair of bearing pads

A panel intended for use as a vacuum enclosure, comprising a pair of spaced sheets defining between them opposite walls of the enclosure, and a spacer assembly located between the sheets and adapted to maintain the sheets at the desired spacing, said spacer assembly comprising a pair of bearing pads positioned on the inside surfaces of the sheets at mutually opposite locations, a spacer element received between the bearing pads which spacer element is formed with substantially spherical bearing surfaces cooperating with the bearing pads, and spring means incorporated within the spacer assembly adapted to allow a limited degree of relative movement of the sheets in a direction substantially at right angles to the plane of the sheets.

대표청구항 ▼

A panel intended for use as a vacuum enclosure, comprising a pair of spaced sheets defining between them opposite walls of said enclosure, a plurality of spacer assemblies located between said sheets and adapted to maintain said sheets at the desired spacing, each of said spacer assemblies comprisin

A panel intended for use as a vacuum enclosure, comprising a pair of spaced sheets defining between them opposite walls of said enclosure, a plurality of spacer assemblies located between said sheets and adapted to maintain said sheets at the desired spacing, each of said spacer assemblies comprising a pair of bearing elements positioned on the inside surfaces of said sheets at mutually opposite locations, a spacer element received between said bearing elements which spacer element is formed with substantially spherical bearing surfaces cooperating with said bearing elements, and spring means incorporated within each said spacer assembly adapted to allow a limited degree of relative movement of said sheets in a direction substantially at right angles to the plane of said sheets. A panel as claimed in claim 1, wherein edge sealing means comprising an edge sealing element supported by a peripheral wall member are provided extending between the bounding edges of said spaced sheets, said sealing element includes flanged side portions in fluid-tight relationship with the inner peripheral areas of said sheets and a wall portion extending between said sheets. A panel as claimed in claim 12, wherein the space defined between said sheets is maintained at reduced pressure and a vacuum port is provided through which the reduced pressure is applied. A panel as claimed in claim 17, incorporating a solar heating element located in said space.