US3782330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web moistening device
Assignee: Fujifilm Holdings Corp
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Filing: 1971-07-12
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Granted: 1974-01-01
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Expires: 1991-07-12
Abstract
Abstract A steam jet nozzle is disposed between a pair of cylindrical rollers whose peripheries are in contact with a moving web to form in conjunction with a housing on the opposite side of the roller from the web, a steam chamber to insure moistening of the web. A fluid contacts the inner surface of the cylindrical roller to insure condensation of the steam on the roller periphery which in turn moistens the moving web.
Inventors
- 👤 M Kanda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:28
CPC Classifications
B; B05; B05B; B05B13/00; B05B13/02; B05B13/0207; D; D21; D21G; D21G7/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
165 words
A web moistening device comprising: at least one cylindrical roller rotatably disposed in contact with a running web, means allowing the flow of fluid through said cylindrical roller, means directing vapor toward said web, a casing having an opening facing said running web and surrounding said cylindrical roller and said means for directing vapor toward said web to define a vapor confining chamber, whereby; a vapor condensing on the periphery of said cylindrical roller due to the temperature of the same by fluid flowing through said hollow cylindrical roller acts to uniformly moisten the web, said hollow cylindrical roller being supported for rotation on a shaft of a diameter less than that of said hollow cylindrical roller, and said shaft including axial passage means and radially extending passage means for directing fluid into the cylindrical gap between said shaft and said hollow cylindrical roller for controlling the temperature of the same and condensation of said vapor on the outer periphery of said hollow cylindrical roller.
Claim 2
Dependent Claim
165 words
A web moistening device comprising: at least one cylindrical roller rotatably disposed in contact with a running web, means allowing the flow of fluid through said cylindrical roller, means directing vapor toward said web, a casing having an opening facing said running web and surrounding said cylindrical roller and said means for directing vapor toward said web to define a vapor confining chamber, whereby; a vapor condensing on the periphery of said cylindrical roller due to the temperature of the same by fluid flowing through said hollow cylindrical roller acts to uniformly moisten the web, said hollow cylindrical roller being supported for rotation on a shaft of a diameter less than that of said hollow cylindrical roller, and said shaft including axial passage means and radially extending passage means for directing fluid into the cylindrical gap between said shaft and said hollow cylindrical roller for controlling the temperature of the same and condensation of said vapor on the outer periphery of said hollow cylindrical roller.
Claim 3
Dependent Claim
103 words
The device as claimed in claim 1, wherein said rollers are two in number lying at longitudinally spaced positions with respect to said web and in contact with the same, said means for directing vapor toward said web and for condensation on said cylindrical rollers, comprises a jet nozzle assembly disposed intermediate of said rollers having a nozzle opening directed toward said moving web, extending transversely across the path of said moving web the full length of the same, means coupling a supply of steam to said nozzle assembly, and wherein said casing, said rollers and running web define a closed steam chamber.
Claim 4
Dependent Claim
34 words
The device as claimed in claim 2, further comprising: means for rotating each hollow cylindrical roller about its axis at variable speed to control the amount of moisture being applied to said running web.
Claim 5
Dependent Claim
34 words
The device as claimed in claim 1, further comprising: means for rotating said hollow cylindrical roller about its axis at variable speed to control the amount of moisture being applied to said running web.
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |