Patent US2642003A successfully refreshed from Google Patents.
Patent US3554504A successfully refreshed from Google Patents.
US3554504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for heat treating sheet material
Assignee: AII Inc
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Filing: 1969-06-06
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Granted: 1971-01-12
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Expires: 1989-06-06
Abstract
Abstract A plurality of heated, rotary rolls over which the sheet material to be treated passes; a casing enclosing said rolls; an exhaust system for the gaseous products of combustion, and a separate exhaust system for the fumes generated by the application of heat to the sheet material as it moves through said casing.
Inventors
- 👤 Ralph C Parkes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:45
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/14; F26B13/18; D; D06; D06C; D06C29/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
90 words
A machine for treating sheet material, said machine including: a casing having a sidewall; a heated rotary roll disposed in said casing for heat treating fume-generating sheet material brought into contact therewith; said sidewall being hollow and having passages establishing communication between its interior and the interior of said casing; an air intake duct communicating with the interior of said sidewall at one end thereof; and an air exhaust duct communicating with the interior of said sidewall at the other end thereof, for withdrawing air and fumes from said casing.
Claim 2
Dependent Claim
90 words
A machine for treating sheet material, said machine including: a casing having a sidewall; a heated rotary roll disposed in said casing for heat treating fume-generating sheet material brought into contact therewith; said sidewall being hollow and having passages establishing communication between its interior and the interior of said casing; an air intake duct communicating with the interior of said sidewall at one end thereof; and an air exhaust duct communicating with the interior of said sidewall at the other end thereof, for withdrawing air and fumes from said casing.
Claim 3
Dependent Claim
22 words
The machine of claim 1 wherein said sidewall is detachably mounted so as to afford access to the interior of the casing.
Claim 4
Dependent Claim
15 words
The machine of claim 1 and means for creating negative pressure in said exhaust duct.
Claim 5
Dependent Claim
57 words
The machine of claim 1 wherein the interior of said sidewall is divided into compartments, each having a passage leading to the interior of the casing, and wherein said compartments are connected individually and in alternate order, with the air intake duct at one end thereof, and with the air exhaust duct at the other end thereof.
Claim 6
Dependent Claim
124 words
A machine for treating sheet material, said machine including: a casing having aligning openings therein; rotary rolls disposed in said casing for heat treating fume-generating sheet material brought into contact therewith; sidewalls for closing said openingS; said sidewall being hollow and being internally partitioned to form separate compartments; each compartment having a passage establishing communication between its interior and the interior of said casing; an air intake duct communicating with the interior of each of said sidewalls at one end thereof; a first air exhaust duct communicating with the interiors of said sidewalls at the other end thereof, for withdrawing air and fumes from said casing; combustion means for heating said rolls; and a second exhaust duct for removing the gaseous products of combustion.
Claim 7
Dependent Claim
124 words
A machine for treating sheet material, said machine including: a casing having aligning openings therein; rotary rolls disposed in said casing for heat treating fume-generating sheet material brought into contact therewith; sidewalls for closing said openingS; said sidewall being hollow and being internally partitioned to form separate compartments; each compartment having a passage establishing communication between its interior and the interior of said casing; an air intake duct communicating with the interior of each of said sidewalls at one end thereof; a first air exhaust duct communicating with the interiors of said sidewalls at the other end thereof, for withdrawing air and fumes from said casing; combustion means for heating said rolls; and a second exhaust duct for removing the gaseous products of combustion.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |