Glazing unit

• US 4,144,684 A
• Filed: 12/13/1976
• Issued: 03/20/1979
• Est. Priority Date: 06/14/1974
• Status: Expired due to Term

• Current Assignee: Pilkington Brothers Unlimited (Pilkington PLC)
• Original Assignee: Pilkington Brothers Unlimited (Pilkington PLC)
• Inventors: Downey, Robert A., Lewis, Joseph E., Kirkbride, Bernard J., Thomasson, Charles V.
• Primary Examiner(s): Robinson, Ellis P.
• Application Number:
  US05/749,715
• Time in Patent Office: 827 Days
• Field of Search: 427/252, 427/109, 427/110, 65/60 R, 65/60 C, 65/30 R, 65/99 A, 118/48, 52/204, 52/171, 52/788, 52/790, 428/428, 428/34, 428/446
• US Class Current: 52/204.5
• CPC Class Codes: C03C 17/00 Surface treatment of glass, not in the form of fibres or filaments, by coating optical coatings of optical elements G02B1/10
• CPC Class Codes: C03C 17/002 for flat glass, e.g. float glass
• CPC Class Codes: C03C 17/09 by deposition from the vapour phase
• CPC Class Codes: C03C 17/22 with other inorganic material C03C17/34, C03C17/44 take precedence
• CPC Class Codes: C03C 2217/263 Metals other than noble metals, Cu or Hg
• CPC Class Codes: C03C 2217/282 Carbides, silicides
• CPC Class Codes: C03C 2218/15 from the vapour phase
• CPC Class Codes: C03C 2218/152 by cvd
• CPC Class Codes: C03C 2218/365 Coating different sides of a glass substrate
• CPC Class Codes: E06B 3/6715 specially adapted for increased thermal insulation or for controlled passage of light E06B3/66323 takes precedence; coating of glass pains C03C17/00; devices or arrangements for controlling the intensity, colour, phase, polarisation or direction of light G02F1/00
• CPC Class Codes: E06B 7/28 Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners edge protecting devices for door leaves E06B3/88; special glazing; emergency glazing; double glazing E06B3/66

Abstract

A glazing unit comprising a sheet of glass having a coating consisting essentially of silicon on a major face thereof, and a frame for that sheet.

Claims

1. A glazing unit having desirable solar control properties comprising a sheet of silicon coated flat glass having a substantially uniform silicon coating of optical thickness in the range 950A to 1600A and a refractive index in the range 3.0 to 4.0 and capable of transmitting light.

2. A glazing unit according to claim 1 having, when viewed from the coated side, a white light transmission in the range 17% to 34%, a direct solar heat transmission in the range 27% to 45% and a solar radiant reflection in the range 34% to 52%.

3. A glazing unit having desirable solar control properties comprising a sheet of glass having a coating of thickness in the range of 250 to 600A and consisting essentially of silicon on a major face thereof and a frame for that sheet, said glazing unit being glazed in the opening of a wall of a building to provide a window in said wall.

4. The glazing unit of claim 3 wherein the coating has a thickness in the range of 300A to 450A.

5. A multiple glazing unit having desirable solar control properties comprising at least two sheets of glass spaced apart by spacer elements, at least one of said sheets having a coating of thickness in the range of 250 to 600A and consisting essentially of silicon on a major surface thereof.

6. The multiple glazing unit of claim 5 wherein the coating has a thickness in the range of 300A to 450A.

7. A multiple glazing unit according to claim 5 wherein the silicon coated surface of said at least one of said sheets is disposed internally of the unit and is thereby protected.

8. A multiple glazing unit according to claim 5 wherein said at least one of said sheets has, when viewed from the coated side, a white light transmission in the range 17% to 34%, a direct solar heat transmission in the range 27% to 45% and a solar radiant reflection in the range 34% to 52%.

9. The multiple glazing unit of claim 8 wherein the coated has a thickness in the range of 300A to 450A.

10. A multiple glazing unit according to claim 6 wherein the silicon coated surface of said at least one of said sheets is disposed internally of the unit and is thereby protected.

11. A multiple glazing unit having desirable solar control properties comprising at least two sheets of glass spaced apart by spacer elements, at least one of sheets having a coating of thickness in the range of 250 to 600A and consisting essentially of silicon on a major surface thereof disposed internally of the unit, said at least one sheet, when viewed from the coated side, having a white light transmission in the range 17% to 34%, a direct solar heat transmission in the range 27% to 45%, and a solar radiant reflection in the range 34% to 52%.

12. The multiple glazing unit of claim 11 wherein the coating has a thickness in the range of 300A to 450A.

13. The multiple glazing unit of claim 11 glazed in the opening of a wall of a building to provide a window in said wall.

14. The multiple glazing unit of claim 13 wherein the coating has a thickness in the range of 300A to 450A.

15. A glazing unit having desirable solar control properties glazed in the opening of a wall of a building to provide a window and comprising a sheet of glass having a coating consisting essentially of silicon on a major face thereof, which coating has a thickness in the range of 250A to 600A.

16. The glazing unit of claim 15 wherein the coating has a thickness in the range of 300A to 450A.