US3864092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressed metal scrap block and method of recovering scrap metal
Assignee: LIPSITZ HAROLD D
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Filing: 1973-04-19
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Granted: 1975-02-04
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Expires: 1993-04-19
Abstract
Abstract Metallic scrap such as is recovered from metal turnings, borings and punchings is prepared in a pressed block form together with a selected bonding material. The block is of a configuration having at least one aperture formed and extending throughout the entire width of the block. The shape of the block is such that when the blocks are loaded in random arrangement in a furnace, the transmission of the heat of convection upwardly through the block and also the passage of molten metal downwardly through the block are facilitated.
Inventors
- 👤 Benjamin D Ravitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:59
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/248; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49751; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12222; Y10T428/12361; Y10T428/12389; Y10T428/12403; Y10T428/24; Y10T428/24273; Y10T428/25; Y10T428/256; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
39 words
An article of manufacture is set forth in claim 1 wherein said block is of substantially rectangular cross section and wherein a pair of spaced openings are formed, both of said openings extending between opposite surfaces of said block.
Claim 2
Dependent Claim
33 words
The combination as set forth in claim 1 wherein said block is of substantially cylindrical configuration and wherein said opening comprises a central channel which extends between opposite plane surfaces of said block.
Claim 3
Dependent Claim
39 words
The combination as set forth in claim 3 wherein said block is of non-uniform cross section and has a relatively larger portion formed proximate one of its ends whereby its center of gravity is concentrated proximate to said end.
Claim 4
Dependent Claim
22 words
The combination as set forth in claim 1 wherein said block comprises substantially 90% of scrap metal and 10% of binder material.
Claim 5
Independent Claim
69 words
A method for recovering metal scrap for remelting purpose, said method comprising mixing fragmentary pieces of scrap metal with cement, compacting said fragmentary pieces of scrap metal and cement into a block, and leaving at least one opening extending from surface to surface through said block for causing improved heat convection and molten material circulation through said block when said block is placed in a heated furnace for melting.
Claim 6
Dependent Claim
33 words
The method of claim 6 wherein said block is formed with a substantially rectangular cross section and wherein a pair of spaced openings are formed, both communicating between opposite surfaces of said block.
Claim 7
Dependent Claim
32 words
The method of claim 6 wherein said block is formed with a substantially cylindrical configuration and wherein said opening is a central channel which extends between opposite plane surfaces of said block.
Claim 8
Dependent Claim
37 words
The method of claim 8 wherein said block is formed with a non-uniform cross section and with a relatively larger portion proximate one of its ends whereby its center of gravity is concentrated proximate to said end.
Claim 9
Dependent Claim
18 words
The method of claim 6 wherein substantially 90% of scrap metal is mixed with 10% of binder material.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |