US3685244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encased steel building block
Assignee: Korblock Corp
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Filing: 1965-08-31
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Granted: 1972-08-22
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Expires: 1985-08-31
Abstract
Abstract A building block formed with a core comprising compressed or crushed old automobile bodies and a coating of concrete. A process and apparatus for the preparation of old automobile bodies.
Inventors
- 👤 Robert A Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:46
CPC Classifications
E; E04; E04C; E04C1/00; E04C1/40; E04B; E04B2/00; E04B2/02; E04B2002/0202; E04B2002/0204; E04B2002/0206; Y; Y10; Y10S; Y10S52/00; Y10S52/09
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
78 words
A building block for heavy construction purposes comprising a central crumpled metallic core composed essentially of a portion of a compressed and crumpled sheet metal automobile body, encased in a coating of cement covering all exterior surfaces of said central core and interlocked therewith, said central core being of generally rectangular shape having grooves running along certain edges thereof, and said cement coating also having external grooves running along edges corresponding to the grooved edges of said core.
Claim 2
Dependent Claim
78 words
A building block for heavy construction purposes comprising a central crumpled metallic core composed essentially of a portion of a compressed and crumpled sheet metal automobile body, encased in a coating of cement covering all exterior surfaces of said central core and interlocked therewith, said central core being of generally rectangular shape having grooves running along certain edges thereof, and said cement coating also having external grooves running along edges corresponding to the grooved edges of said core.
Claim 3
Dependent Claim
48 words
A construction as defined in claim 1, in which certain edges of said building block other than said grooved edges have flanges projecting therefrom to engage in the grooves at edges of adjacent similar blocks when a series of such blocks are laid together to form a wall.
Claim 4
Dependent Claim
92 words
A building block for heavy construction purposes comprising a central metallic core of crumpled and compacted sheet metal, said core being of the general shape of a rectangular parallelepiped with rabbet grooves running along certain edges, and a coating of cement encasing all exterior surfaces of said metallic core, the exterior surfaces of said cement coating also being of the general shape of a rectangular parallelepiped and having rabbet grooves running along at least some of the edges of the coating corresponding to the edges of the core which have rabbet grooves.
Claim 5
Dependent Claim
92 words
A building block for heavy construction purposes comprising a central metallic core of crumpled and compacted sheet metal, said core being of the general shape of a rectangular parallelepiped with rabbet grooves running along certain edges, and a coating of cement encasing all exterior surfaces of said metallic core, the exterior surfaces of said cement coating also being of the general shape of a rectangular parallelepiped and having rabbet grooves running along at least some of the edges of the coating corresponding to the edges of the core which have rabbet grooves.
Claim 6
Dependent Claim
159 words
A building block for heavy construction purposes comprising a central metallic core of crumpled and compacted sheet metal, said core being of the general shape of a rectangular parallelepiped with rabbet grooves running along certain edges and with a bottom surface slightly concave in a direction through the thickness of the block, and a coating of cement encasing all exterior surfaces of said metallic core, the exterior surfaces of said cement coating also being of the general shape of a rectangular parallelepiped and having rabbet grooves running along at least some of the edges of the coating corresponding to the edges of the core which have rabbet grooves, said cement coating further including flanges of cement projecting from certain edges of the block which do not have rabbet grooves, said projecting flanges being adapted to fit into the rabbet grooves of adjacent blocks of similar construction when a series of such blocks are laid together to form a wall.
Claim 7
Dependent Claim
159 words
A building block for heavy construction purposes comprising a central metallic core of crumpled and compacted sheet metal, said core being of the general shape of a rectangular parallelepiped with rabbet grooves running along certain edges and with a bottom surface slightly concave in a direction through the thickness of the block, and a coating of cement encasing all exterior surfaces of said metallic core, the exterior surfaces of said cement coating also being of the general shape of a rectangular parallelepiped and having rabbet grooves running along at least some of the edges of the coating corresponding to the edges of the core which have rabbet grooves, said cement coating further including flanges of cement projecting from certain edges of the block which do not have rabbet grooves, said projecting flanges being adapted to fit into the rabbet grooves of adjacent blocks of similar construction when a series of such blocks are laid together to form a wall.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |