US5511346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic foam insulation and drainage board and method of using in below-grade applications
Assignee: Dow Chemical Co
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Filing: 1994-08-24
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Granted: 1996-04-30
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Expires: 2014-08-24
Abstract
Abstract A rigid, thermoplastic foam board useful in below-grade residential and commercial insulating and drainage applications. The board defines a plurality of oriented channels extending therein along the board. The channel extends into the board through a relatively narrow first opening at the face into a relatively wide first zone. The channel then further extends into the board from the first zone through a relatively narrow second opening into a second zone. The board provides superior water drainage, and protects a below-grade building wall from excessive moisture. Further disclosed is a method for using the foam board in below-grade applications.
Inventors
- 👤 Linda L. Kenworthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:15
CPC Classifications
E; E02; E02D; E02D31/00; E02D31/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/2457
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
131 words
A rigid, thermoplastic foam board, the board defining a plurality of channels extending therein from a face of the board, the channels being generally unidirectionally oriented along the board, the channels extending into the board through relatively narrow first openings at the face into relatively wide first zones, the channels further extending into the board from the first zones through relatively narrow second openings into second zones, the first and second zones being adapted to convey water from one end of the channels to the other end, the first openings each having a width of from 1/8 inch to 5/8 inch, the first zones each having a maximum width of from 1/4 inch to 3/4 inch, and the second openings each having a width or from 1/16 inch to 1/4 inch.
Claim 2
Dependent Claim
131 words
A rigid, thermoplastic foam board, the board defining a plurality of channels extending therein from a face of the board, the channels being generally unidirectionally oriented along the board, the channels extending into the board through relatively narrow first openings at the face into relatively wide first zones, the channels further extending into the board from the first zones through relatively narrow second openings into second zones, the first and second zones being adapted to convey water from one end of the channels to the other end, the first openings each having a width of from 1/8 inch to 5/8 inch, the first zones each having a maximum width of from 1/4 inch to 3/4 inch, and the second openings each having a width or from 1/16 inch to 1/4 inch.
Claim 3
Dependent Claim
26 words
The board of claim 1, wherein the channel has the genera shape of a blunt-ended arrow, the blunt end of the arrow opening at the face.
Claim 4
Dependent Claim
18 words
The board of claim 2, wherein the channels are spaced about 1 inch to about 3 inches apart.
Claim 5
Dependent Claim
13 words
The board of claim 1, wherein the board is an extruded polystyrene board.
Claim 6
Dependent Claim
13 words
The board of claim 2, herein the board is an extruded polystyrene board.
Claim 7
Dependent Claim
13 words
The board of claim 1, wherein the board is a polystyrene bead board.
References Cited (Backward Citations)
US2377788A
Cited
US4318258A
Cited
US4309855A
Cited
DE3115026A1
Cited
US4704048A
Cited
US5056281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-30 | 1999-10-30 | 2000-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-30 | 2003-10-30 | 2004-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-30 | 2007-10-30 | 2008-04-30 | $7700.00 | Window Closed / Lapsed |