US4097625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low melting temperature metal coating process, apparatus and product
Assignee: St Joe Minerals Corp
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Filing: 1977-06-17
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Granted: 1978-06-27
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Expires: 1997-06-17
Abstract
Abstract Substrate such as relatively porous, low thermally conductive materials are coated with molten lead, lead-base alloys, zinc, zinc-base alloys, tin, tin-base alloys, cadmium, cadmium-base alloys, aluminum, aluminum-base alloys and the like by spreading the molten metal by means of a low thermally conductive roll to provide products useful in sound attenuation, moisture and corrosion proofing and radiation shielding.
Inventors
- 👤 Norman Laurence Lunn
- 👤 Charles Jeffrey McCrea
- 👤 Raymond David Pregaman
- 👤 Lawrence Edward Turowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:05
CPC Classifications
B; B32; B32B; B32B15/00; C; C23; C23C; C23C2/00; C23C2/006
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
103 words
A method of mechanically bonding to a non-metallic porous substrate a metal selected from the group consisting of lead or lead-base alloys, zinc or zinc-base alloys, tin or tin-base alloys, cadmium or cadmium-base alloys, and aluminum or aluminum-base alloys, comprising heating said selected metal to its molten state; supporting a non-metallic porous substrate on a heat sink; while supported dispensing in a continuous rectilinear pattern a stream of the molten metal on the supported non-metallic porous substrate to be coated; continuously pressing the dispensed metal while still molten into the substrate and causing said dispensed metal to solidify immediately following the pressing step.
Claim 2
Independent Claim
103 words
A method of mechanically bonding to a non-metallic porous substrate a metal selected from the group consisting of lead or lead-base alloys, zinc or zinc-base alloys, tin or tin-base alloys, cadmium or cadmium-base alloys, and aluminum or aluminum-base alloys, comprising heating said selected metal to its molten state; supporting a non-metallic porous substrate on a heat sink; while supported dispensing in a continuous rectilinear pattern a stream of the molten metal on the supported non-metallic porous substrate to be coated; continuously pressing the dispensed metal while still molten into the substrate and causing said dispensed metal to solidify immediately following the pressing step.
Claim 3
Dependent Claim
18 words
Paper, cloth, wallboard tile, wood, gypsum board, plastic sheet, or screen coated by the process of claim 1.
Claim 4
Dependent Claim
15 words
The method defined in claim 1 further including stripping the solidified metal from the substrate.
Claim 5
Dependent Claim
84 words
Apparatus for mechanically bonding to a non-metallic porous substrate comprising means for heating a low temperature metal to its molten state; heat sink means for supporting the non-metallic substrate; means for dispensing in a continuous rectilinear pattern a stream of the molten metal on said substrate while supported; and means for continuously pressing the dispensed metal while still molten into the substrate and means maintaining the substrate at a temperature such that the dispensed metal immediately solidifies after it is pressed into the substrate.
Claim 6
Dependent Claim
84 words
Apparatus for mechanically bonding to a non-metallic porous substrate comprising means for heating a low temperature metal to its molten state; heat sink means for supporting the non-metallic substrate; means for dispensing in a continuous rectilinear pattern a stream of the molten metal on said substrate while supported; and means for continuously pressing the dispensed metal while still molten into the substrate and means maintaining the substrate at a temperature such that the dispensed metal immediately solidifies after it is pressed into the substrate.
Claim 7
Dependent Claim
21 words
Apparatus as defined in claim 4 wherein the means for continuously pressing the dispensed metal into the substrate comprises a roller.
Claim 8
Dependent Claim
11 words
The invention defined in claim 5 wherein the roller comprises rubber.
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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) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |