Patent US4002002A successfully refreshed from Google Patents.
US4002002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating building block
Assignee: Individual
•
Filing: 1976-04-19
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Granted: 1977-01-11
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Expires: 1996-04-19
Abstract
Abstract An insulating building block which is a composite of masonry material and a foam material is disclosed. The building block is obtained by applying a layer of foam material to a longitudinally extending side face of a cavity located within the block. A shield insert may be employed to define that portion of a block cavity which is to receive the foam.
Inventors
- 👤 Jacob C. Barnhardt, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:14
CPC Classifications
E; E04; E04C; E04C1/00; E04C1/40; B; B28; B28B; B28B11/00; B28B11/04; B28B11/042; B28B11/043; E04C1/41; E04B; E04B2/00; E04B2/02; E04B2002/0256; E04B2002/0289; E04B2002/0293
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
119 words
A method for forming a composite insulating building block which comprises: a. disposing a shield insert within at least one original cavity of a hollow building block to form a relatively smaller cavity between the shield insert and a longitudinally extending side face of said original cavity, said shield insert extending from top to bottom of said original cavity when disposed in said original cavity; b. dispensing a foam material into the smaller cavity between said shield insert and the side face of said original cavity; c. allowing said foam material to solidify as it adheres to the side face of said original cavity, thus forming a layer thereon; and d. removing said shield insert from said original cavity.
Claim 2
Independent Claim
119 words
A method for forming a composite insulating building block which comprises: a. disposing a shield insert within at least one original cavity of a hollow building block to form a relatively smaller cavity between the shield insert and a longitudinally extending side face of said original cavity, said shield insert extending from top to bottom of said original cavity when disposed in said original cavity; b. dispensing a foam material into the smaller cavity between said shield insert and the side face of said original cavity; c. allowing said foam material to solidify as it adheres to the side face of said original cavity, thus forming a layer thereon; and d. removing said shield insert from said original cavity.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein the dispensing step comprises dispensing urethane foam.
Claim 4
Dependent Claim
23 words
The method of claim 1 which comprises forming said layer of foam having a thickness of from about 1/4 to about 4 inches.
Claim 5
Dependent Claim
22 words
The method of claim 1 further including applying release agent to said shield insert prior to disposing said insert within said cavity.
Claim 6
Dependent Claim
18 words
The method of claim 1 further including heating said building block prior to dispensing of said foam material.
Claim 7
Dependent Claim
23 words
The method of claim 1 further including the step of extending said original cavity throughout the entire vertical dimension of said building block.
Claim 8
Dependent Claim
36 words
The method of claim 1 further including disposing said shield insert so that its side face which is adjacent said smaller cavity is disposed substantially vertically and parallel to the side face of said original cavity.
Claim 9
Dependent Claim
32 words
The method of claim 1 further including providing said smaller cavity between all faces of said original cavity and said shield insert with the foam layer extending completely around said original cavity.
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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) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |