US4055928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casing brick, and a method and apparatus for making the same
Assignee: INNOVATION MAGERLE KG A Co OF AUSTRIA
•
Filing: 1976-04-14
•
Granted: 1977-11-01
•
Expires: 1996-04-14
Abstract
Abstract A casing brick comprising a hollow insulating insert, and a two-part concrete shell which substantially encloses the insert, two projections extending from the insert and positioned between the two parts of the shell and interlocking projections and grooves for connecting the shell and the insert together.
Inventors
- 👤 Otto Magerle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:00
CPC Classifications
E; E04; E04C; E04C1/00; E04C1/40; E04C1/41; B; B28; B28B; B28B19/00; B28B19/003
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
68 words
A casing brick, comprising: a hollow and unitary insulating insert; a concrete shell consisting of two separate parts having a spacing therebetween and substantially enclosing said insert, said two separate parts being free of contact over the entire periphery thereof, said insert having two projections thereon received in the spacing between said two parts of said shell; and interlocking means for connecting each shell part to said insert.
Claim 2
Dependent Claim
68 words
A casing brick, comprising: a hollow and unitary insulating insert; a concrete shell consisting of two separate parts having a spacing therebetween and substantially enclosing said insert, said two separate parts being free of contact over the entire periphery thereof, said insert having two projections thereon received in the spacing between said two parts of said shell; and interlocking means for connecting each shell part to said insert.
Claim 3
Dependent Claim
27 words
A casing brick is claimed in claim 1 in which said interlocking means includes dovetail-shaped grooves on said insert engaged by corresponding dovetail-shaped projections on said shell.
Claim 4
Dependent Claim
20 words
A casing as claimed in claim 1 in which said insert has internal walls which converge conically in one direction.
Claim 5
Dependent Claim
18 words
A casing brick as claimed in claim 1, in which said insert is made of expanded plastics material.
Claim 6
Dependent Claim
23 words
A casing brick as claimed in claim 1 in which the insert has a plurality of bores in the region of the grooves.
Claim 7
Dependent Claim
53 words
A casing brick as claimed in claim 1 in which said insert has a height equal to that of the brick and said two-part concrete shell is mounted on the sides of said insert, said interlocking means being located between the mutually facing sides of said insert and each of said two-part shell.
Claim 8
Dependent Claim
31 words
A casing brick as claimed in claim 1 in which the terminal end of said two projections on said insert are each flush with the exterior surface of said two-part shell.
Claim 9
Dependent Claim
20 words
A casing brick as claimed in claim 7 in which said two projections extend in opposed directions from said insert.
References Cited (Backward Citations)
US1676153A
Cited
US1861759A
Cited
US2030998A
Cited
US2004323A
Cited
US2519664A
Cited
US3478482A
Cited
US3757482A
Cited
US3780484A
Cited
US3982369A
Cited
US3984957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-31 | 1981-05-02 | 1981-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-31 | 1985-05-02 | 1985-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-31 | 1989-05-02 | 1989-11-01 | $7700.00 | Window Closed / Lapsed |