Patent FR1491522A successfully refreshed from Google Patents.
US4030541A
Expired / Lapsed
US
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Multi-element type radiator of plastic material
Assignee: Hoechst AG
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Filing: 1975-06-06
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Granted: 1977-06-21
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Expires: 1995-06-06
Abstract
Abstract A multi-element radiator of plastic material wherein the elements are closed of a plurality of vertical water pipes which discharge at their upper and lower ends into cylindrical tube sections and the end-faces of adjacent tube sections are connected to form the upper and lower horizontal collecting channels.
Inventors
- 👤 Erwin Gross
- 👤 Hans Vowinkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:54
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/0219; F28F9/0221; F28F21/00; F28F21/06; F28F21/062; F28F21/063; F28F2240/00; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/471; Y10S165/488; Y10S165/905
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
96 words
A multi-element radiator made of plastic material and comprising vertical water pipes connected to upper and lower collecting channels, each radiator element being composed of a plurality of said vertical pipes connected at their upper and lower ends to relatively thin-walled cylindrical tube sections of substantially uniform diameter and the end-faces of adjacent tube sections being connected to form horizontal tubular channels of substantially uniform diameter along the length thereof, the ends of said pipes being of diminished cross-section at their junctions with said tube sections and being aligned with a radius of said tube sections.
Claim 2
Dependent Claim
96 words
A multi-element radiator made of plastic material and comprising vertical water pipes connected to upper and lower collecting channels, each radiator element being composed of a plurality of said vertical pipes connected at their upper and lower ends to relatively thin-walled cylindrical tube sections of substantially uniform diameter and the end-faces of adjacent tube sections being connected to form horizontal tubular channels of substantially uniform diameter along the length thereof, the ends of said pipes being of diminished cross-section at their junctions with said tube sections and being aligned with a radius of said tube sections.
Claim 3
Dependent Claim
17 words
A multi-element radiator as claimed in claim 1, wherein the tube sections are reinforced by strengthening rings.
Claim 4
Dependent Claim
34 words
A multi-element radiator as claimed in claim 1, wherein the vertical water pipes of one radiator element and the vertical water pipes of adjacent radiator elements are strengthened by reinforcing members interconnecting said pipes.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |