US3857673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for heat treating continuous wire and rod
Assignee: Individual
•
Filing: 1974-03-08
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Granted: 1974-12-31
•
Expires: 1994-03-08
Abstract
Abstract A continuous length of wire or rod to be heat treated is passed over and repeatedly around a porous or perforated cylindrical or slightly conical rotating drum contained within a suitably insulated housing. Hot air or other gas if forced outward through the porous or perforated surface of the drum by a fan or blower disposed coaxially with the drum and located either within or substantially within the drum to heat the wire or rod to a desired temperature. The action of the same fan or blower causes the heated air to flow from the exterior of the drum past heaters and thence again to the interior of the drum. Alternatively, cooling of the wire or rod may be accomplished by substituting cooling means for the heaters.
Inventors
- 👤 E Andrus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:54
CPC Classifications
B; B21; B21C; B21C47/00; B21C47/26; B21C47/265; C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/56; C21D9/562; C21D9/563; F; F27; F27B; F27B9/00; F27B9/28
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
185 words
In apparatus for treating a continuous strand the combination of: a chamber, means for continuously introducing said strand into said chamber at a preselected rate and means for withdrawing said strand continuously from said chamber at the same rate, a rotatable hollow drum within said chamber, said drum rotatable on an axis whereby a plurality of turns of said strand may be wound around said drum, said drum having two ends, the interior of said drum being the space within said drum between said ends, said drum having a plurality of passages extending therethrough which provide communicating passages between the interior of said drum and the exterior of said drum, means to blow gas through said passages from the interior of said drum to the exterior of said drum, said means to blow gas through said passages comprising a rotatable gas impeller means rotatable on an axis, said gas impeller means rotatable on the axis on which said drum rotates, said gas impeller means disposed at least partly within said interior of said drum, said apparatus being provided with heating means to heat said gas.
Claim 2
Dependent Claim
185 words
In apparatus for treating a continuous strand the combination of: a chamber, means for continuously introducing said strand into said chamber at a preselected rate and means for withdrawing said strand continuously from said chamber at the same rate, a rotatable hollow drum within said chamber, said drum rotatable on an axis whereby a plurality of turns of said strand may be wound around said drum, said drum having two ends, the interior of said drum being the space within said drum between said ends, said drum having a plurality of passages extending therethrough which provide communicating passages between the interior of said drum and the exterior of said drum, means to blow gas through said passages from the interior of said drum to the exterior of said drum, said means to blow gas through said passages comprising a rotatable gas impeller means rotatable on an axis, said gas impeller means rotatable on the axis on which said drum rotates, said gas impeller means disposed at least partly within said interior of said drum, said apparatus being provided with heating means to heat said gas.
Claim 3
Dependent Claim
14 words
The apparatus of claim 1 whereby said heating means are disposed within said chamber.
Claim 4
Dependent Claim
18 words
In the apparatus of claim 1, said gas impeller means disposed entirely within said interior of said drum.
Claim 5
Dependent Claim
14 words
The apparatus of claim 3 further provided with heating means to heat said gas.
Claim 6
Dependent Claim
13 words
In the apparatus of claim 4, said heating means disposed within said chamber.
References Cited (Backward Citations)
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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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |