US3720079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry and wet heater for combined use
Assignee: Mitsubishi Heavy Industries Ltd
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Filing: 1971-05-11
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Granted: 1973-03-13
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Expires: 1991-05-11
Abstract
Abstract A dry and wet heater for combined use, characterized in that said heater comprises a steam passage disposed inside a steam heating medium chamber and communicating with a steam supply source; and a pipe of a small diameter disposed inside said steam heating medium chamber and connecting a yarn introducing tube to said steam passage.
Inventors
- 👤 T Katsumata
- 👤 H Takahashi
- 👤 S Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:44
CPC Classifications
D; D02; D02J; D02J13/00; D02J13/001; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/0481
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
A heater utilizing both dry and wet heat for heating yarn comprising:a steam heating chamber adapted to contain heated steam therein; a yarn introducing tube passing substantially through the center of said chamber; a steam passage lying within said chamber and being adapted to communicate with a steam supply source; a pipe connected between said steam passage at a point remote from said supply source and said yarn introducing tube, said pipe having a smaller diameter than the diameter of said steam passage, said pipe also having a substantial length and lying completely within said steam chamber, whereby steam passing through said pipe is subjected to the heat of the steam within said chamber.
Claim 2
Dependent Claim
114 words
A heater utilizing both dry and wet heat for heating yarn comprising:a steam heating chamber adapted to contain heated steam therein; a yarn introducing tube passing substantially through the center of said chamber; a steam passage lying within said chamber and being adapted to communicate with a steam supply source; a pipe connected between said steam passage at a point remote from said supply source and said yarn introducing tube, said pipe having a smaller diameter than the diameter of said steam passage, said pipe also having a substantial length and lying completely within said steam chamber, whereby steam passing through said pipe is subjected to the heat of the steam within said chamber.
Claim 3
Dependent Claim
114 words
A heater utilizing both dry and wet heat for heating yarn comprising:a steam heating chamber adapted to contain heated steam therein; a yarn introducing tube passing substantially through the center of said chamber; a steam passage lying within said chamber and being adapted to communicate with a steam supply source; a pipe connected between said steam passage at a point remote from said supply source and said yarn introducing tube, said pipe having a smaller diameter than the diameter of said steam passage, said pipe also having a substantial length and lying completely within said steam chamber, whereby steam passing through said pipe is subjected to the heat of the steam within said chamber.
Claim 4
Dependent Claim
114 words
A heater utilizing both dry and wet heat for heating yarn comprising:a steam heating chamber adapted to contain heated steam therein; a yarn introducing tube passing substantially through the center of said chamber; a steam passage lying within said chamber and being adapted to communicate with a steam supply source; a pipe connected between said steam passage at a point remote from said supply source and said yarn introducing tube, said pipe having a smaller diameter than the diameter of said steam passage, said pipe also having a substantial length and lying completely within said steam chamber, whereby steam passing through said pipe is subjected to the heat of the steam within said chamber.
References Cited (Backward Citations)
CH303993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |