Patent US4405674A successfully refreshed from Google Patents.
US4405674A
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Process for making a magnetic material containing carpet tile and carpet tile
Assignee: Carpets International-Georgia (Sales) Inc
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Filing: 1982-08-16
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Granted: 1983-09-20
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Expires: 2002-08-16
Abstract
Abstract A process for manufacturing a magnetic material-containing carpet tile which comprises: forming a uniform fluid mixture of a liquid resinous material (e.g., vinyl chloride plastisol or poly(acrylic acid) water-based emulsion) and at least about 60% by weight of the mixture of a particulate magnetizable material (e.g., barium ferrite), applying the uniform fluid mixture to the back of a carpet facing to form a carpet composite, heating the carpet composite to solidify the mixture and fuse the mixture with the carpet facing and thereby provide a carpet covering, forming the resulting magnetized carpet covering into carpet tiles and applying a magnetic force to the carpet tiles to magnetize the particulate magnetizable material.
Inventors
- 👤 Joseph H. Kyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:48
CPC Classifications
D; D06; D06N; D06N7/00; D06N7/0005; D06N7/0039; D06N7/0042; B; B29; B29K; B29K2029/00; B29L; B29L2031/00; B29L2031/778; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23986; Y10T428/31504; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
119 words
A process for manufacturing a magnetic material containing carpet tile comprising: forming by high shear dispersal a uniform fluid plastisol mixture of a liquid resinous material comprising a polymer of a vinyl or vinylidene chloride, a wetting agent and at least about 60 percent by weight of the mixture of a particulate magnetizable material; applying the said uniform fluid mixture to the back of a carpet facing to form a carpet composite; heating the said carpet composite to solidify the mixture and fuse the mixture with the carpet facing and thereby provide a carpet covering; cutting the resulting magnetized carpet covering into carpet tiles; and applying a magnetic force to the carpet tiles to magnetize the particulate magnetizable material.
Claim 2
Dependent Claim
119 words
A process for manufacturing a magnetic material containing carpet tile comprising: forming by high shear dispersal a uniform fluid plastisol mixture of a liquid resinous material comprising a polymer of a vinyl or vinylidene chloride, a wetting agent and at least about 60 percent by weight of the mixture of a particulate magnetizable material; applying the said uniform fluid mixture to the back of a carpet facing to form a carpet composite; heating the said carpet composite to solidify the mixture and fuse the mixture with the carpet facing and thereby provide a carpet covering; cutting the resulting magnetized carpet covering into carpet tiles; and applying a magnetic force to the carpet tiles to magnetize the particulate magnetizable material.
Claim 3
Dependent Claim
26 words
The process of claim 1 wherein the uniform fluid mixture contains at least about 75 percent by weight of the mixture of the particulate magnetizable material.
Claim 4
Dependent Claim
19 words
The process of claims 1 or 2 wherein the particulate magnetizable material is a barium, calcium or strontium ferrite.
Claim 5
Dependent Claim
23 words
The process of claim 1 wherein the uniform fluid mixture is a plastisol of a vinyl chloride polymer or copolymer with polyvinyl acetate.
Claim 6
Dependent Claim
56 words
The process of claim 4 wherein the said uniform fluid mixture is formed by first forming a uniform mixture of the particulate magnetizable material, a wetting agent and a plasticizer for the liquid resinous material and thereafter adding that mixture to a separate mixture of the liquid resinous material, a plasticizer therefor and a stabilizer therefor.
Claim 7
Dependent Claim
8 words
The product of the process of claim 5.
Claim 8
Dependent Claim
25 words
The process of claim 1 wherein the uniform fluid mixture contains at least about 90 percent by weight of the magnetizable particulate permanent magnet material.
Claim 9
Dependent Claim
34 words
The process of claim 7 wherein the particulate permanent magnet material is a ferrite of the general formula MO.6Fe 2 O 3 wherein M is one or more of Ba, Sr, Ca or Pb.
Claim 10
Dependent Claim
9 words
The process of claim 8 wherein M is Ba.
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) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |