Patent US3608051A successfully refreshed from Google Patents.
US3608051A
Expired / Lapsed
US
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Wax mold casting of concrete
Assignee: Columbia Fabricators Inc
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Filing: 1969-03-07
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Granted: 1971-09-21
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Expires: 1989-03-07
Abstract
Abstract A process to cast at least part of the peripheral surface of a concrete structural element against a wax mold which may also serve as a matrix to position form or surface elements to be embedded in the concrete. The initial mold is established from liquid wax, the wax allowed to set, and the mold removed from the cast formed after setting of the concrete by hot water or steam which also serves to cure the concrete. The process allows simple mold formation for and removal from complex concrete structural forms, especially those having embedded surface elements and undercut surfaces. Apparatus is disclosed to conveniently carry out the process.
Inventors
- 👤 Ralph K Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:45
CPC Classifications
B; B28; B28B; B28B19/00; B28B19/0007; B28B7/00; B28B7/34; B28B7/342; Y; Y10; Y10S; Y10S264/00; Y10S264/44
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
37 words
The process of claim 1 in which the solid elements and the mold are heated to a temperature near the melting temperature of the thermoplastic material and the molten thermoplastic material is thereafter added to the mold.
Claim 2
Dependent Claim
14 words
The process of claim 2 in which the thermoplastic material is a petroleum wax.
Claim 3
Dependent Claim
21 words
The process of claim 1 in which the melted thermoplastic material is separated from the heated liquid by difference in density.
Claim 4
Dependent Claim
19 words
The process of claim 1 in which the thermoplastic material is a petroleum wax and said liquid is water.
Claim 5
Dependent Claim
49 words
The process of claim 5 in which said heating includes submerging said mold containing said concrete member and solidified wax in a circulating stream of heated water to melt said solidified wax and remove melted wax from said concrete member and to accelerate the further setting of said concrete.
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |