US3982369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated building block
Assignee: Individual
•
Filing: 1975-04-18
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Granted: 1976-09-28
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Expires: 1995-04-18
Abstract
Abstract An insulation strip made of closed cell plastic foam is formed in the center of a building block transverse to the webs thereof and parallel to the side walls. The insulation strip extends beyond the edge of the sidewalls by 1/4 inch on all four side edges of the block so as to provide a 1/2 inch space for mortar joints between blocks when the blocks are stacked to form a wall. In one embodiment, the edges of the insulation strip are grooved in a cross-hatched pattern which tends to make the edges compressible, thereby permitting minor dimensional changes in the size of the mortar joint to keep the blocks aligned.
Inventors
- 👤 Henry P. Keleske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:26
CPC Classifications
E; E04; E04C; E04C1/00; E04C1/40; E04C1/41
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
143 words
In a rectangular building block having spaced parallel rectangular sidewalls with spaced webs extending transversely therebetween and voids between adjacent webs, the improvement comprising a thermal and moisture insulation strip attached to said webs and extending therebetween parallel to said sidewalls, said insulation strip extending beyond the edge of said sidewalls in the plane of the strip on all four edges of the block by a predetermined amount and having edges at right angles to said plane positioned to butt against the corresponding edge of an adjacent block in any direction to accomodate a mortar joint of predetermined width when the blocks are stacked to form a wall, and further comprising laterally extending flanges in the center of said insulating strip, said flanges contacting the inner surfaces of said sidewalls and acting to obstruct air flow through the open portion of said voids.
Claim 2
Dependent Claim
143 words
In a rectangular building block having spaced parallel rectangular sidewalls with spaced webs extending transversely therebetween and voids between adjacent webs, the improvement comprising a thermal and moisture insulation strip attached to said webs and extending therebetween parallel to said sidewalls, said insulation strip extending beyond the edge of said sidewalls in the plane of the strip on all four edges of the block by a predetermined amount and having edges at right angles to said plane positioned to butt against the corresponding edge of an adjacent block in any direction to accomodate a mortar joint of predetermined width when the blocks are stacked to form a wall, and further comprising laterally extending flanges in the center of said insulating strip, said flanges contacting the inner surfaces of said sidewalls and acting to obstruct air flow through the open portion of said voids.
Claim 3
Dependent Claim
19 words
The building block of claim 1 in which said insulating strip is made of a closed cell plastic foam.
Claim 4
Dependent Claim
157 words
In a rectangular building block having spaced parallel rectangular sidewalls with spaced webs extending transversely therebetween and voids between adjacent webs, the improvement comprising a thermal and moisture insulation strip attached to said webs and extending therebetween parallel to said sidewalls, said insulation strip extending beyond the edge of said sidewalls in the plane of the strip on all four edges of the block by a predetermined amount and having edges at right angles to said plane positioned to butt against the corresponding edge of an adjacent block in any direction to accomodate a mortar joint of predetermined width when the blocks are stacked to form a wall, said insulating strip being composed of a substantially rigid closed cell plastic foam, and further comprising weakening grooves in the outer edges of said insulating strip arranged in a pattern to make said outer edges compressible, thereby permitting minor dimensional changes in stacked blocks to correctly align the same.
Claim 5
Dependent Claim
157 words
In a rectangular building block having spaced parallel rectangular sidewalls with spaced webs extending transversely therebetween and voids between adjacent webs, the improvement comprising a thermal and moisture insulation strip attached to said webs and extending therebetween parallel to said sidewalls, said insulation strip extending beyond the edge of said sidewalls in the plane of the strip on all four edges of the block by a predetermined amount and having edges at right angles to said plane positioned to butt against the corresponding edge of an adjacent block in any direction to accomodate a mortar joint of predetermined width when the blocks are stacked to form a wall, said insulating strip being composed of a substantially rigid closed cell plastic foam, and further comprising weakening grooves in the outer edges of said insulating strip arranged in a pattern to make said outer edges compressible, thereby permitting minor dimensional changes in stacked blocks to correctly align the same.
References Cited (Backward Citations)
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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) | 1979-09-28 | 1980-03-29 | 1980-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-28 | 1984-03-29 | 1984-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-28 | 1988-03-29 | 1988-09-28 | $7700.00 | Window Closed / Lapsed |