US3888087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foundation wall protective sheet
Assignee: OIVIND LORENTZEN Inc
•
Filing: 1973-04-11
•
Granted: 1975-06-10
•
Expires: 1993-04-11
Abstract
Abstract Improvements in protective membranes or sheets for foundation walls are disclosed. The sheets have regular courses of protrusions for spacing the sheet from the founddation wall and a porous backing for drainage outwardly of the sheet. The protrusions provide air channels between the protective sheet and the foundation for thermal insulation and for facilitating drying of the foundation wall. Small vertical ribs between the courses of the protrusions provide convenient water passages to take care of drainage water in the porous backing without interfering with the air spaces and incidentally providing bending vertical lines for more facile installation handling. Modifications of the sheet include transverse ribs at lower portions of the sheet to allow horizontal bending thereof over footing and drainage configurations. A barrier for preventing back fill from falling between the protective sheeting and foundation is also disclosed.
Inventors
- 👤 Jon Bergsland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:25
CPC Classifications
E; E02; E02D; E02D31/00; E02D31/02; E04; E04B; E04B1/00; E04B1/62; E04B1/70; E04B1/7023
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
134 words
An imperforate sheet made of relatively thin stiff material for protecting foundation walls and the like, and including embossed protrusions on a front side thereof and comprising means for forming air channels between the wall and the sheet, said sheet including embossed ribs formed therein and extending from an edge of said sheet across said sheet and forming on said sheet channels for bending said sheet along the length of said ribs said ribs extending from a top edge of said sheet downwardly, being concave rearwardly and also comprising channel means formed on the back side of said sheet for receiving water from back fill and for draining the same, said ribs protruding forwardly a lesser distance than said protrusions, and a layer of porous material adhering to the back side of said sheet.
Claim 2
Dependent Claim
134 words
An imperforate sheet made of relatively thin stiff material for protecting foundation walls and the like, and including embossed protrusions on a front side thereof and comprising means for forming air channels between the wall and the sheet, said sheet including embossed ribs formed therein and extending from an edge of said sheet across said sheet and forming on said sheet channels for bending said sheet along the length of said ribs said ribs extending from a top edge of said sheet downwardly, being concave rearwardly and also comprising channel means formed on the back side of said sheet for receiving water from back fill and for draining the same, said ribs protruding forwardly a lesser distance than said protrusions, and a layer of porous material adhering to the back side of said sheet.
Claim 3
Dependent Claim
131 words
An imperforate sheet made of relatively thin stiff material for protecting foundation walls and the like, and including embossed protrusions on a front side thereof and comprising means for forming air channels between the wall and the sheet, said sheet including embossed ribs formed therein and extending from an edge of said sheet across said sheet and forming on said sheet channels for bending said sheet along the lengths of said ribs, said ribs extending from a top edge of said sheet downwardly and comprising channel means formed on the back side of said sheet for receiving water externally of said sheet, said ribs protruding forwardly a lesser distance than said protrusions, and a strip of porous material adhering along the top edge of said sheet on the front side thereof.
Claim 4
Dependent Claim
131 words
An imperforate sheet made of relatively thin stiff material for protecting foundation walls and the like, and including embossed protrusions on a front side thereof and comprising means for forming air channels between the wall and the sheet, said sheet including embossed ribs formed therein and extending from an edge of said sheet across said sheet and forming on said sheet channels for bending said sheet along the lengths of said ribs, said ribs extending from a top edge of said sheet downwardly and comprising channel means formed on the back side of said sheet for receiving water externally of said sheet, said ribs protruding forwardly a lesser distance than said protrusions, and a strip of porous material adhering along the top edge of said sheet on the front side thereof.
References Cited (Backward Citations)
US1928589A
Cited
US1981434A
Cited
US2154734A
Cited
US2977103A
Cited
US3495363A
Cited
US3754362A
Cited
US3654765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |