Patent US3388057A successfully refreshed from Google Patents.
Patent US3744092A successfully refreshed from Google Patents.
US3744092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling the density of a fiber feed mat
Assignee: Curlator Corp
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Filing: 1971-06-07
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Granted: 1973-07-10
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Expires: 1991-06-07
Abstract
Abstract For controlling its fiber density during formation of a mat that is to be fed to the lickerin of a card or web forming machine, a pressure gauge is connected to the inlet duct of the suction fan that causes fibers to be drawn from a feed mechanism and laid down on a condenser to form the mat; and this gauge is geared to a pivoted or reciprocable damper in the duct to control air flow in the duct, thereby to control the density of the mat. The control damper may be positioned either at the inlet or the outlet side of the fan.
Inventors
- 👤 C Auten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:26
CPC Classifications
D; D01; D01G; D01G23/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
179 words
In a machine for forming a fiber mat, a movable foraminous condenser, a conduit for conducting a stream of fibers suspended in air onto said condenser, a suction fan, means for actuating said fan, a duct connected at one end to said condenser and at its opposite end to the suction side of said fan to draw air through said condenser across the whole width thereof, upon actuation of said fan, to cause fibers to be deposited from said conduit on said condenser across its width, a pressure gauge operatively connected to said duct between said condenser and said fan to monitor air flow through said duct to said fan, a single movable damper mounted operatively at one side of said fan in the air stream flowing through said fan to vary, with its movement, the amount of air flow through said fan from the suction side of said fan to the exhaust side thereof, and means operatively connecting said pressure gauge to said damper to vary the position of said damper with variation in pressure in said duct.
Claim 2
Dependent Claim
179 words
In a machine for forming a fiber mat, a movable foraminous condenser, a conduit for conducting a stream of fibers suspended in air onto said condenser, a suction fan, means for actuating said fan, a duct connected at one end to said condenser and at its opposite end to the suction side of said fan to draw air through said condenser across the whole width thereof, upon actuation of said fan, to cause fibers to be deposited from said conduit on said condenser across its width, a pressure gauge operatively connected to said duct between said condenser and said fan to monitor air flow through said duct to said fan, a single movable damper mounted operatively at one side of said fan in the air stream flowing through said fan to vary, with its movement, the amount of air flow through said fan from the suction side of said fan to the exhaust side thereof, and means operatively connecting said pressure gauge to said damper to vary the position of said damper with variation in pressure in said duct.
Claim 3
Dependent Claim
29 words
A machine as claimed in claim 1, wherein said damper is movably mounted on the exhaust side of said fan to throttle flow of exhaust air from said fan.
Claim 4
Dependent Claim
164 words
In a machine for forming a fiber mat, a movable foraminous condenser, a conduit for conducting a stream of fibers suspended in air onto said condenser, a suction fan, means for actuating said fan, a duct connected at one end to said condenser and at its opposite end to the suction side of said fan to draw air through said condenser across the whole width thereof, upon actuation of said fan, to cause fibers to be deposited from said conduit on said condenser across its width, a pressure gauge mounted in said duct between said condenser and said fan to monitor air flow through said duct to said fan, a single movable damper disposed to vary, with its movement, the amount of air flow through said fan, and means operatively connecting said pressure gauge to said damper to vary the position of said damper with variation in pressure in said duct, said damper being disposed in said duct between said gauge and said fan.
Claim 5
Dependent Claim
164 words
In a machine for forming a fiber mat, a movable foraminous condenser, a conduit for conducting a stream of fibers suspended in air onto said condenser, a suction fan, means for actuating said fan, a duct connected at one end to said condenser and at its opposite end to the suction side of said fan to draw air through said condenser across the whole width thereof, upon actuation of said fan, to cause fibers to be deposited from said conduit on said condenser across its width, a pressure gauge mounted in said duct between said condenser and said fan to monitor air flow through said duct to said fan, a single movable damper disposed to vary, with its movement, the amount of air flow through said fan, and means operatively connecting said pressure gauge to said damper to vary the position of said damper with variation in pressure in said duct, said damper being disposed in said duct between said gauge and said fan.
Claim 6
Dependent Claim
158 words
In a machine for forming a fiber mat, a movable foraminous condenser, a conduit for conducting a stream of fibers suspended in air onto said condenser, a suction fan, means for actuating said fan, a duct connected at one end to said condenser and at its opposite end to the suction side of said fan to draw air through said condenser across the whole width thereof, upon actuation of said faN, to cause fibers to be deposited from said conduit on said condenser across its width, a pressure gauge mounted in said duct between said condenser and said fan to monitor air flow through said duct to said fan, a single movable damper disposed to vary, with its movement, the amount of air flow through said fan, means operatively connecting said pressure gauge to said damper to vary the position of said damper with variation in pressure in said duct, said damper being pivotally mounted in said duct.
Claim 7
Dependent Claim
158 words
In a machine for forming a fiber mat, a movable foraminous condenser, a conduit for conducting a stream of fibers suspended in air onto said condenser, a suction fan, means for actuating said fan, a duct connected at one end to said condenser and at its opposite end to the suction side of said fan to draw air through said condenser across the whole width thereof, upon actuation of said faN, to cause fibers to be deposited from said conduit on said condenser across its width, a pressure gauge mounted in said duct between said condenser and said fan to monitor air flow through said duct to said fan, a single movable damper disposed to vary, with its movement, the amount of air flow through said fan, means operatively connecting said pressure gauge to said damper to vary the position of said damper with variation in pressure in said duct, said damper being pivotally mounted in said duct.
Claim 8
Dependent Claim
184 words
In a machine for forming a fiber mat, a movable foraminous condenser, a conduit for conducting a stream of fibers suspended in air onto said condenser, a suction fan, means for actuating said fan, a duct connected at one end to said condenser and at its opposite end to the suction side of said fan to draw air through said condenser across the whole width thereof, upon actuation of said fan, to cause fibers to be deposited from said conduit on said condenser across its width, a pressure gauge mounted in said duct between said condenser and said fan to monitor air flow through said duct to said fan, a single movable damper disposed to vary, with its movement, the amount of air flow through said fan, and means operatively connecting said pressure gauge to said damper to vary the position of said damper with variation in pressure in said duct, said damper being rectilinearly reciprocably mounted in said duct and having a conical portion operative to close off the bore of said duct to a variable extent as said damper is moved rectilinearly.
Claim 9
Dependent Claim
184 words
In a machine for forming a fiber mat, a movable foraminous condenser, a conduit for conducting a stream of fibers suspended in air onto said condenser, a suction fan, means for actuating said fan, a duct connected at one end to said condenser and at its opposite end to the suction side of said fan to draw air through said condenser across the whole width thereof, upon actuation of said fan, to cause fibers to be deposited from said conduit on said condenser across its width, a pressure gauge mounted in said duct between said condenser and said fan to monitor air flow through said duct to said fan, a single movable damper disposed to vary, with its movement, the amount of air flow through said fan, and means operatively connecting said pressure gauge to said damper to vary the position of said damper with variation in pressure in said duct, said damper being rectilinearly reciprocably mounted in said duct and having a conical portion operative to close off the bore of said duct to a variable extent as said damper is moved rectilinearly.
Claim 10
Dependent Claim
237 words
In a machine for forming a fiber mat, a movable foraminous condenser, a conduit for conducting a stream of fibers suspended in air onto said condenser, a suction fan, means for actuating said fan, a duct connected at one end to said condenser and at its opposite end to the suction side of said fan to draw air through said condenser across the whole width thereof, upon actuation of said fan, to cause fibers to be deposited from said conduit on said condenser across its width, a pressure gauge mounted in said duct between said condenser and said fan to monitor air flow through said duct to said fan, a single movable damper disposed to vary, with its movement, the amount of air flow through said fan, and means operatively connecting said pressure gauge to said damper to vary the position of said damper with variation in pressure in said duct, said damper being movably mounted on the exhaust side of said fan to throttle flow of exhaust air from said fan, an exhaust box connected to the exhaust side of said fan, and a duct forming said connection, said damper being an axially reciprocable tapered plug mounted in said box with its smaller end in confronting relation to the last-named duct to vary the opening of said duct with variation in pressure in the first-named duct, and said box being perforated for exhaust of air therefrom.
Claim 11
Dependent Claim
237 words
In a machine for forming a fiber mat, a movable foraminous condenser, a conduit for conducting a stream of fibers suspended in air onto said condenser, a suction fan, means for actuating said fan, a duct connected at one end to said condenser and at its opposite end to the suction side of said fan to draw air through said condenser across the whole width thereof, upon actuation of said fan, to cause fibers to be deposited from said conduit on said condenser across its width, a pressure gauge mounted in said duct between said condenser and said fan to monitor air flow through said duct to said fan, a single movable damper disposed to vary, with its movement, the amount of air flow through said fan, and means operatively connecting said pressure gauge to said damper to vary the position of said damper with variation in pressure in said duct, said damper being movably mounted on the exhaust side of said fan to throttle flow of exhaust air from said fan, an exhaust box connected to the exhaust side of said fan, and a duct forming said connection, said damper being an axially reciprocable tapered plug mounted in said box with its smaller end in confronting relation to the last-named duct to vary the opening of said duct with variation in pressure in the first-named duct, and said box being perforated for exhaust of air therefrom.
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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |