US3775914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple-glazed unit for high sound transmission loss
Assignee: PPG Industries Inc
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Filing: 1972-04-18
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Granted: 1973-12-04
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Expires: 1992-04-18
Abstract
Abstract A multiple-glazed window unit comprising a plurality of glass sheets which are substantially parallel to each other and separated from each other at marginal portions thereof by a metallic spacing element and a plurality of resilient spacing elements. The resilient spacing elements are of substantial thickness and separate the metallic spacing element from said sheets. In one embodiment of the present invention, the resilient spacing elements are attached to each other by a thin web.
Inventors
- 👤 P Patil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:00
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/66; E06B3/67; E06B3/6707
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
196 words
A multiple-glazed acoustical unit comprising: a. a pair of transparent sheets of different thickness having opposed, facing surfaces spaced at least about 1/2 inch apart; b. a primary spacing element between said transparent sheets and free of any contact with said sheets; c. a first resilient spacing element of at least about 1/16 inch thickness between said primary spacing element and one of said transparent sheets, said first resilient spacing element having a Shore A hardness of at least about 20 and being free of any contact with the other of said transparent sheets; d. a second resilient spacing element of at least about 1/16 inch thickness between said primary spacing element and said other of said transparent sheets, said second resilient spacing element having a Shore A hardness of at least about 20 and being free of any contact with said one of said transparent sheets; and e. said primary spacing element, said first resilient spacing element and said second resilient spacing element separating said transparent sheets at marginal portions thereof to provide a multiple-glazed unit, said multiple-glazed unit having a sound transmission class of at least about 38 as determined by ASTM Standard E90-70.
Claim 2
Dependent Claim
196 words
A multiple-glazed acoustical unit comprising: a. a pair of transparent sheets of different thickness having opposed, facing surfaces spaced at least about 1/2 inch apart; b. a primary spacing element between said transparent sheets and free of any contact with said sheets; c. a first resilient spacing element of at least about 1/16 inch thickness between said primary spacing element and one of said transparent sheets, said first resilient spacing element having a Shore A hardness of at least about 20 and being free of any contact with the other of said transparent sheets; d. a second resilient spacing element of at least about 1/16 inch thickness between said primary spacing element and said other of said transparent sheets, said second resilient spacing element having a Shore A hardness of at least about 20 and being free of any contact with said one of said transparent sheets; and e. said primary spacing element, said first resilient spacing element and said second resilient spacing element separating said transparent sheets at marginal portions thereof to provide a multiple-glazed unit, said multiple-glazed unit having a sound transmission class of at least about 38 as determined by ASTM Standard E90-70.
Claim 3
Dependent Claim
27 words
A multiple-glazed unit as recited in claim 1 which further includes a thin resilient web connecting said first resilient spacing element and said second resilient spacing element.
Claim 4
Dependent Claim
48 words
A multiple-glazed unit as recited in claim 1 wherein said transparent sheets are spaced at least about 1 inch apart, said first and second resilient spacing elements are of at least about 1/8 inch thickness and said unit has a sound transmission class of at least about 39.
Claim 5
Dependent Claim
48 words
A multiple-glazed unit as recited in claim 1 wherein said transparent sheets are spaced at least about 2 inches apart, said first and second resilient spacing elements are of at least about 1/4 inch thickness and said unit has a sound transmission class of at least about 45.
Claim 6
Dependent Claim
48 words
A multiple-glazed unit as recited in claim 1 wherein said transparent sheets are spaced at least about 4 inches apart, said first and second resilient spacing elements are of at least about 1/2 inch thickness and said unit has a sound transmission class of at least about 48.
Claim 7
Dependent Claim
20 words
A multiple-glazed acoustical unit as recited in claim 1, wherein said primary spacing element is comprised of a rigid material.
Claim 8
Dependent Claim
18 words
A multiple-glazed acoustical unit as recited in claim 1, wherein said primary spacing element is comprised of aluminum.
Claim 9
Dependent Claim
21 words
A multiple-glazed acoustical unit as recited in claim 1, wherein at least one of said transparent sheets is comprised of glass.
Claim 10
Dependent Claim
21 words
A multiple-glazed acoustical unit as recited in claim 1, wherein at least one of said transparent sheets is comprised of plastic.
Claim 11
Dependent Claim
55 words
A multiple-glazed acoustical unit as recited in claim 6, wherein said primary spacing element has a web portion that extends substantially perpendicularly to said transparent sheets and a plurality of leg portions, each of which is connected to said web portion, said leg portions extending substantially perpendicularly from said web portion in an outward direction.
Claim 12
Dependent Claim
17 words
A multiple-glazed acoustical unit as recited in claim 6, wherein said primary spacing element is box shaped.
Claim 13
Dependent Claim
19 words
A multiple-glazed acoustical unit as recited in claim 11, wherein desiccant material is provided in said primary spacing element.
Claim 14
Dependent Claim
40 words
A multiple-glazed acoustical unit as recited in claim 1, wherein an adhesive sealing compound extends between said primary spacing element and each of said resilient spacing elements and between each of said resilient spacing elements and the adjacent transparent sheet.
Claim 15
Dependent Claim
45 words
A multiple-glazed acoustical unit as recited in claim 1, wherein an adhesive sealing compound and a polyethylene backing member extends continuously around the perimeter of said unit from one of said transparent sheets to another of said transparent sheets at the outer edge portions thereof.
Claim 16
Dependent Claim
50 words
A multiple-glazed acoustical unit as recited in claim 14, wherein an inwardly facing U-shaped channel extends around said polyethylene backing member, said U-shaped channel having one leg in line contact with said one of said transparent sheets and another leg in line contact with said another of said transparent sheets.
Claim 17
Dependent Claim
18 words
A multiple-glazed acoustical unit as recited in claim 15, wherein said U-shaped channel is comprised of stainless steel.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |