Patent US3739491A successfully refreshed from Google Patents.
US3739491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High velocity air web dryer
Assignee: TEC SYST INC US
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Filing: 1971-09-22
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Granted: 1973-06-19
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Expires: 1991-09-22
Abstract
Abstract A dryer for drying a running web by causing high-velocity, heated air to be impinged on the running web. High-velocity nozzles are located on opposite sides of the running web and arranged transversely to the direction of the web movement, and one set of nozzles is movable relative to the other set so as to readily vary the distance of the air nozzles from the web. The transversely arranged nozzles are supported on the air supply ducts and thus form an integral unit which is not subject to warpage and, consequently, the precise spacing of the nozzles from the web can be maintained. Means are provided for accurately and easily adjusting the position of the movable set of nozzles relative to the other set of nozzles. The device also includes a wall having a slideable seal and located between the inlet side of the air supply fan and one side of the web whereby the entire arrangement can be made very compact while at the same time insuring that the web will not be pulled into the air supply fan. An air make-up door is provided for controlling the source of make-up air and which also serves to keep the doors cool. The device also includes an easily replaceable gasket in the air plenum which eliminates the necessity of dismantling the air duct to replace the seal.
Inventors
- 👤 R Creapo
- 👤 R Downham
- 👤 D Klein
- 👤 J Eckelaert
- 👤 J Frost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:03
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
255 words
A high velocity air dryer for a running web comprising, an outer housing, a web inlet at one end of said housing and a web outlet at the opposite end of said housing, an upper air bar and supply duct assembly stationarily mounted in said housing and located above a web passing through said inlet and outlet in said housing, said assembly including air supply duct means extending longitudinally in said housing in respect to the direction of web travel, and a plurality of generally tubular air bars extending transversely to said web, and at longitudinally spaced locations along said web, said bars being in air-receiving communication with said duct means and having air discharging openings for discharging high-velocity air against said web, a lower air bar and supply duct assembly shiftably mounted in said housing and located beneath said web and in opposition to said upper assembly, said lower assembly including air supply duct means extending longitudinally in said housing, and a plurality of generally tubular air bars extending transversely to said web at spaced locations therealong, said bars being in air-receiving communication with said lower duct means and having air discharging openings for discharging high-velocity air against said web, power means for shifting said lower assembly toward said upper assembly, and flexible means connected between said lower assembly and said power means and also trained over said upper assembly whereby said lower assembly is suspended from said upper assembly and said lower assembly is shifted via said flexible means by said power means.
Claim 2
Dependent Claim
255 words
A high velocity air dryer for a running web comprising, an outer housing, a web inlet at one end of said housing and a web outlet at the opposite end of said housing, an upper air bar and supply duct assembly stationarily mounted in said housing and located above a web passing through said inlet and outlet in said housing, said assembly including air supply duct means extending longitudinally in said housing in respect to the direction of web travel, and a plurality of generally tubular air bars extending transversely to said web, and at longitudinally spaced locations along said web, said bars being in air-receiving communication with said duct means and having air discharging openings for discharging high-velocity air against said web, a lower air bar and supply duct assembly shiftably mounted in said housing and located beneath said web and in opposition to said upper assembly, said lower assembly including air supply duct means extending longitudinally in said housing, and a plurality of generally tubular air bars extending transversely to said web at spaced locations therealong, said bars being in air-receiving communication with said lower duct means and having air discharging openings for discharging high-velocity air against said web, power means for shifting said lower assembly toward said upper assembly, and flexible means connected between said lower assembly and said power means and also trained over said upper assembly whereby said lower assembly is suspended from said upper assembly and said lower assembly is shifted via said flexible means by said power means.
Claim 3
Dependent Claim
35 words
The dryer set forth in claim 1 including fixed stop means against which said lower assembly abuts when in the operative position, and said power means resiliently biases said lower assembly against said stop means.
Claim 4
Dependent Claim
38 words
The dryer set forth in claim 1 further characterized in that said flexible means includes flexible cables connected to said power means, and said upper assembly has pulley means mounted thereon and over which said cables are trained.
Claim 5
Dependent Claim
40 words
The dryer of claim 3 including stop means abuttable by said lower assembly when the latter is in an upper operative position, and said power means is biased in a direction to maintain said lower assembly against saiD stop means.
Claim 6
Dependent Claim
17 words
The dryer of claim 4 further characterized in that said power means is a fluid cylinder means.
Claim 7
Dependent Claim
84 words
The dryer set forth in claim 1 including, an air supply fan in said housing for supplying air to said assemblies, said fan having an air inlet located along one side of said assemblies, and wall means interposed between said air inlet and said assemblies and having relatively moveable portions whereby said air inlet is shielded from the web located between said assemblies regardless of the vertical position of said lower assembly, to thereby prevent said web from being sucked into said air inlet.
Claim 8
Dependent Claim
57 words
The dryer set forth in claim 6 including an air duct placing said fan in air delivering communication with said lower assembly, said duct having a joint therethrough which is inclined to the vertical, and flexible gasket means around said joint for sealing the joint when said lower assembly is vertically shifted upwardly to an operative position.
Claim 9
Dependent Claim
40 words
The dryer in accordance with claim 7 further characterized in that said gasket means includes a frame slideably and removably mounted in said joint, and a flexible gasket is detachably secured to said frame for removal therewith from said duct.
Claim 10
Dependent Claim
178 words
A high-velocity air dryer for a running web comprising, an outer housing, a web inlet at one end of said housing and a web outlet at the opposite end of said housing for permitting a running web to pass through said housing, an upper air bar and supply duct assembly mounted in said housing and located above said web, a lower air bar and supply duct assembly shiftably mounted in said housing and located beneath and in opposition to said upper assembly, said assemblies discharging high-velocity air against said web, means for vertically shifting said lower assembly relative to said upper assembly, an air supply fan in said housing for supplying air to said assemblies and having an air inlet located along one longitudinal side of said assemblies, and wall means interposed between said air inlet and said assemblies and having relatively movable portions whereby said air inlet is shielded from the web located between said assemblies regardless of the vertical position of said lower assembly, to thereby prevent said web from being sucked into said air inlet.
Claim 11
Dependent Claim
178 words
A high-velocity air dryer for a running web comprising, an outer housing, a web inlet at one end of said housing and a web outlet at the opposite end of said housing for permitting a running web to pass through said housing, an upper air bar and supply duct assembly mounted in said housing and located above said web, a lower air bar and supply duct assembly shiftably mounted in said housing and located beneath and in opposition to said upper assembly, said assemblies discharging high-velocity air against said web, means for vertically shifting said lower assembly relative to said upper assembly, an air supply fan in said housing for supplying air to said assemblies and having an air inlet located along one longitudinal side of said assemblies, and wall means interposed between said air inlet and said assemblies and having relatively movable portions whereby said air inlet is shielded from the web located between said assemblies regardless of the vertical position of said lower assembly, to thereby prevent said web from being sucked into said air inlet.
Claim 12
Dependent Claim
57 words
The dryer set forth in claim 9 including an air duct placing said fan in air delivering communication with said lower assembly, said duct having a joint therethrough which is inclined to the vertical, and flexible gasket means around said joint for sealing the joint when said lower assembly is vertically shifted upwardly to an operative position.
Claim 13
Dependent Claim
40 words
The dryer in accordance with claim 10 further characterized in that said gasket means includes a frame slideably and removably mounted in said joint, and a flexible gasket is detachably secured to said frame for removal therewith from said duct.
Claim 14
Dependent Claim
53 words
The dryer described in claim 9 further characterized in that said means for vertically shifting said lower assembly includes power means, and thrust-transmitting means connected between said lower assembly and said power means, said transmitting means also being in engagement with said upper assembly to suspend said lower assembly from said upper assembly.
Claim 15
Dependent Claim
157 words
A high-velocity air dryer for a running web comprising, an outer housing, a web inlet at one end of said housing and a web outlet at the opposite end of said housing, an upper air bar and supply duct assembly stationarily mounted in said housing and located above a web passing through said inlet and outlet in said housing, a lower air bar and supply duct assembly shiftably mounted in said housing and located beneath said web and in opposition to said upper assembly, said assemblies discharging high-velocity air against said web, means for shifting said lower assembly toward said upper assembly, an air supply fan in said housing, an air duct placing said fan in air-delivering communication with said lower assembly, said duct having a joint therethrough which is inclined to the vertical, and flexible gasket means around said joint for sealing the joint when said lower assembly is vertically shifted upwardly to an operative position.
Claim 16
Dependent Claim
157 words
A high-velocity air dryer for a running web comprising, an outer housing, a web inlet at one end of said housing and a web outlet at the opposite end of said housing, an upper air bar and supply duct assembly stationarily mounted in said housing and located above a web passing through said inlet and outlet in said housing, a lower air bar and supply duct assembly shiftably mounted in said housing and located beneath said web and in opposition to said upper assembly, said assemblies discharging high-velocity air against said web, means for shifting said lower assembly toward said upper assembly, an air supply fan in said housing, an air duct placing said fan in air-delivering communication with said lower assembly, said duct having a joint therethrough which is inclined to the vertical, and flexible gasket means around said joint for sealing the joint when said lower assembly is vertically shifted upwardly to an operative position.
Claim 17
Dependent Claim
40 words
The dryer in accordance with claim 13 further characterized in that said gasket means includes a frame slideably and removably mounted in said joint, and a flexible gasket is detachably secured to said frame for removal therewith from said duct.
Claim 18
Dependent Claim
53 words
The dryer described in claim 13 further characterized in that said means for vertically shifting said lower assembly includes power means, and thrust-transmitting means connected between said lower assembly and said power means, said transmitting means also being in engagement with said upper assembly to suspend said lower assembly from said upper assembly.
Claim 19
Dependent Claim
53 words
The dryer described in claim 14 further characterized in that said means for vertically shifting said lower assembly includes power means, and thrust-transmitting means connected between said lower assembly and said power means, said transmitting means also being in engagement with said upper assembly to suspend said lower assembly from said upper assembly.
Claim 20
Dependent Claim
174 words
A high-velocity air dryer for a running web comprising, housing means, a web inlet at one end of said housing means, and a web outlet at the opposite end of said housing means for permitting a running web to pass through said housing means, an upper air bar and supply duct assembly mounted in said housing means and located above said web, a lower air bar and supply duct assembly mounted in said housing means and located beneath and in opposition to said upper assembly, said assemblies discharging high-velocity air against said web, means for vertically shifting one assembly relative to the other assembly, an air supply fan in said housing means and located along one longitudinal side of said assemblies and for supplying air to said assemblies, said fan having an air inlet, and intervening wall means interposed between said fan air inlet and said assemblies and including relatively movable portions whereby the web located between said assemblies cannot be sucked into said fan inlet regardless of the vertical position of said assemblies.
Claim 21
Dependent Claim
174 words
A high-velocity air dryer for a running web comprising, housing means, a web inlet at one end of said housing means, and a web outlet at the opposite end of said housing means for permitting a running web to pass through said housing means, an upper air bar and supply duct assembly mounted in said housing means and located above said web, a lower air bar and supply duct assembly mounted in said housing means and located beneath and in opposition to said upper assembly, said assemblies discharging high-velocity air against said web, means for vertically shifting one assembly relative to the other assembly, an air supply fan in said housing means and located along one longitudinal side of said assemblies and for supplying air to said assemblies, said fan having an air inlet, and intervening wall means interposed between said fan air inlet and said assemblies and including relatively movable portions whereby the web located between said assemblies cannot be sucked into said fan inlet regardless of the vertical position of said assemblies.
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |