US3218184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for coating pipe
Assignee: Individual
•
Filing: 1961-04-28
•
Granted: 1965-11-16
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Expires: 1981-04-28
Abstract
No abstract record available.
Inventors
- 👤 Jerome H Lemelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:32
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/18; B05D1/22; B05D1/24; B05D7/00; B05D7/22; B05D7/222; B22; B22C; B22C9/00; B22C9/06; C; C03; C03B; C03B23/00; C03B23/02; C03B23/20; C03B23/203; C03B23/24; F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/10; F16L58/1009; F16L58/1018; F28; F28F; F28F13/00; F28F13/18; F28F19/00; F28F19/02; F28F3/00; F28F3/12; F28F3/14; H; H01; H01J; H01J9/00; H01J9/24; H01J9/245; H01J9/247; H05; H05B; H05B3/00; H05B3/40; H05B3/42; H05B3/48; H05B3/50; B05D2202/00; B05D2401/00; B05D2401/30; B05D2401/32; B05D2505/00; B05D2507/00; B05D2507/01; B05D3/00; B05D3/02; B05D3/0218; B05D3/0236; B05D3/0245; B05D3/0254; B05D3/0281
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A METHOD OF COATING THE WALLS OF AN ELONGATED ARTICLE WITH A PARTICULATE THERMOPLASTIC MATERIAL, WHICH COMPRISES SUSPENDING THE PARTICLES OF SAID MATERIAL IN A FLUIDIZED BED FORMED CONCENTRICALLY OF SAID ELONGATED ARTICLE AND HEATING THE SAME AT A TEMPERATURE ABOVE THE MELTING RANGE OF THE THERMOPLASTIC MATERIAL TO FUSE A PORTION OF SAID MATERIAL TO SAID WALLS TO PRODUCE A COATING THEREON, THE IMPROVEMENT COMPRISING PRODUCING SAID FLUIDIZED BED BY DEPOSITING A MASS OF SAID THERMOPLASTIC MATERIAL CONCENTRICALLY OF SAID ARTICLE ADJACENT ONE END THEREOF AND SIMULTANEOUSLY INTRODUCING A FLUIDIZING GAS INTO THE PARTICULATE MASS ADJACENT SAID END AND AT A PLURALITY OF POINTS DISPLACED LONGITUDINALLY OF THE ARTICLE TO THEREBY PROVIDE A FLUIDIZED BED EXTENDING LENGTHWISE OF THE WALLS OF SAID ELONGATED ARTICLE.
Claim 2
Dependent Claim
126 words
IN A METHOD OF COATING THE WALLS OF AN ELONGATED ARTICLE WITH A PARTICULATE THERMOPLASTIC MATERIAL, WHICH COMPRISES SUSPENDING THE PARTICLES OF SAID MATERIAL IN A FLUIDIZED BED FORMED CONCENTRICALLY OF SAID ELONGATED ARTICLE AND HEATING THE SAME AT A TEMPERATURE ABOVE THE MELTING RANGE OF THE THERMOPLASTIC MATERIAL TO FUSE A PORTION OF SAID MATERIAL TO SAID WALLS TO PRODUCE A COATING THEREON, THE IMPROVEMENT COMPRISING PRODUCING SAID FLUIDIZED BED BY DEPOSITING A MASS OF SAID THERMOPLASTIC MATERIAL CONCENTRICALLY OF SAID ARTICLE ADJACENT ONE END THEREOF AND SIMULTANEOUSLY INTRODUCING A FLUIDIZING GAS INTO THE PARTICULATE MASS ADJACENT SAID END AND AT A PLURALITY OF POINTS DISPLACED LONGITUDINALLY OF THE ARTICLE TO THEREBY PROVIDE A FLUIDIZED BED EXTENDING LENGTHWISE OF THE WALLS OF SAID ELONGATED ARTICLE.
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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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |