US4422271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double-walled masonry
Assignee: Individual
•
Filing: 1981-04-23
•
Granted: 1983-12-27
•
Expires: 2001-04-23
Abstract
Abstract A double walled masonry with an interior insulating layer of mineral wool or the like and a free space between the insulating layer and outer wall for airing the masonry.
Inventors
- 👤 Hedwig Anzinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:43
CPC Classifications
E; E04; E04C; E04C1/00; E04C1/40; E04C1/41
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
100 words
Double-walled masonry comprising (a) an inner supporting wall, (b) an outer wall defining a free space with the inner wall, the outer wall being comprised of (1) individual building blocks having perpendicularly extending ribs projecting into the free space and defining slots therebetween to constitute the free space, the ribs having an average width which is smaller than the average width of the slots, and (c) an interior insulating layer between the inner supporting wall and the ribs, the ribs projecting to the insulating layer for holding the same in place and the slots permitting airing of the double-walled masonry.
Claim 2
Dependent Claim
100 words
Double-walled masonry comprising (a) an inner supporting wall, (b) an outer wall defining a free space with the inner wall, the outer wall being comprised of (1) individual building blocks having perpendicularly extending ribs projecting into the free space and defining slots therebetween to constitute the free space, the ribs having an average width which is smaller than the average width of the slots, and (c) an interior insulating layer between the inner supporting wall and the ribs, the ribs projecting to the insulating layer for holding the same in place and the slots permitting airing of the double-walled masonry.
Claim 3
Dependent Claim
14 words
Double-walled masonry according to claim 1, wherein the insulating layer is of mineral wool.
Claim 4
Dependent Claim
41 words
Double-walled masonry according to claim 1 or 2, wherein the average width of the ribs is about half the maximum height thereof and the average width of the slots is about 2 to 5 times the maximum height of the ribs.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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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) | 1986-12-26 | 1987-06-27 | 1987-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-26 | 1991-06-27 | 1991-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-26 | 1995-06-27 | 1995-12-27 | $7700.00 | Window Closed / Lapsed |