US3768119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for forming random fiber webs
Assignee: Curlator Corp
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Filing: 1970-12-31
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Granted: 1973-10-30
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Expires: 1990-12-31
Abstract
Abstract The atomization chamber or air duct between the lickerin and the condenser of a machine for forming random fiber webs is provided with a floor of airfoil shape and the duct cover or roof is inclined to the floor at an angle of not more than 15*. The doffing bar is here formed integral with the roof or cover, and is rounded at the entrance end of the duct. The saber is spaced from the entrance end of the floor to allow air flow under as well as over the saber; and an adjustable damper or valve is provided to control the amount of air flow under the saber.
Inventors
- 👤 D Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:32
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/70; D04H1/72
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
214 words
In a machine for forming random fiber webs having a rotary lickerin a movable foraminous condenser, a duct extending from the lickerin to the condenser, means for feeding a fiber mat to the lickerin so that the lickerin in its rotation combs fibers from the mat, and means for supplying an air stream at the lickerin end of said duct to cause fibers doffed from the lickerin to be conveyed by the air stream to the condenser, the improvement wherein the floor of said duct is of airfoil shape and is convexly curved to converge toward the roof of the duct from the entering end of the duct to a point intermediate the ends of the duct and then diverges from the roof of the duct to the condenser end thereof, the point where the floor is closest to the roof of the duct being closer to the lickerin than to the condenser and being adjacent the place of doffing of the fibers from the lickerin, a removable saber disposed adjacent the entering end of the floor of said duct but spaced therefrom so that air supplied to said duct will flow around both the top and bottom of the saber, and means for adjustably regulating the amount of air passing under the saber.
Claim 2
Dependent Claim
214 words
In a machine for forming random fiber webs having a rotary lickerin a movable foraminous condenser, a duct extending from the lickerin to the condenser, means for feeding a fiber mat to the lickerin so that the lickerin in its rotation combs fibers from the mat, and means for supplying an air stream at the lickerin end of said duct to cause fibers doffed from the lickerin to be conveyed by the air stream to the condenser, the improvement wherein the floor of said duct is of airfoil shape and is convexly curved to converge toward the roof of the duct from the entering end of the duct to a point intermediate the ends of the duct and then diverges from the roof of the duct to the condenser end thereof, the point where the floor is closest to the roof of the duct being closer to the lickerin than to the condenser and being adjacent the place of doffing of the fibers from the lickerin, a removable saber disposed adjacent the entering end of the floor of said duct but spaced therefrom so that air supplied to said duct will flow around both the top and bottom of the saber, and means for adjustably regulating the amount of air passing under the saber.
Claim 3
Dependent Claim
154 words
In a machine for forming random fiber webs having a rotary lickerin, a movable foraminous condenser, a duct extending from the lickerin to the condenser, means for feeding a fiber mat to the lickerin so that the lickerin in its rotation combs fibers from the mat, means for supplying an air stream at the lickerin end of said duct to cause fibers doffed from the lickerin to be conveyed by the air stream to the condenser, the improvement wherein the floor of said duct is of airfoil shape, a removable saber is disposed adjacent the entering end of the floor of said duct but is spaced therefrom so that air supplied to said duct will flow around both the top and bottom of the saber, and having means for adjusting the amount of air flow under the saber, and said adjusting means is a valve mounted to pivot adjustably toward and from the saber.
Claim 4
Dependent Claim
154 words
In a machine for forming random fiber webs having a rotary lickerin, a movable foraminous condenser, a duct extending from the lickerin to the condenser, means for feeding a fiber mat to the lickerin so that the lickerin in its rotation combs fibers from the mat, means for supplying an air stream at the lickerin end of said duct to cause fibers doffed from the lickerin to be conveyed by the air stream to the condenser, the improvement wherein the floor of said duct is of airfoil shape, a removable saber is disposed adjacent the entering end of the floor of said duct but is spaced therefrom so that air supplied to said duct will flow around both the top and bottom of the saber, and having means for adjusting the amount of air flow under the saber, and said adjusting means is a valve mounted to pivot adjustably toward and from the saber.
Claim 5
Dependent Claim
168 words
In a machine for forming random fiber webs having a rotary lickerin, a movable foraminous condenser, a duct extending from the lickerin to the condenser, means for feeding a fiber mat to the lickerin so that the lickerin in its rotation combs fibers from the mat, and means including a conduit for supplying air to said duct at the lickerin end of the duct to cause fibers doffed from the lickerin to be conveyed by the air stream to the condenser, the improvement comprising a saber disposed adjacent the junction of said conduit and said duct and confronting the lickerin, said saber being spaced from opposite sides of the conduit and from the floor of said duct whereby the air flowing from said conduit into said duct passes over and under the saber, and means for adjustably regulating the amount of air passing under the saber, and said adjusting means comprises a valve pivoted at one end in said conduit and movable toward and away from said saber.
Claim 6
Dependent Claim
168 words
In a machine for forming random fiber webs having a rotary lickerin, a movable foraminous condenser, a duct extending from the lickerin to the condenser, means for feeding a fiber mat to the lickerin so that the lickerin in its rotation combs fibers from the mat, and means including a conduit for supplying air to said duct at the lickerin end of the duct to cause fibers doffed from the lickerin to be conveyed by the air stream to the condenser, the improvement comprising a saber disposed adjacent the junction of said conduit and said duct and confronting the lickerin, said saber being spaced from opposite sides of the conduit and from the floor of said duct whereby the air flowing from said conduit into said duct passes over and under the saber, and means for adjustably regulating the amount of air passing under the saber, and said adjusting means comprises a valve pivoted at one end in said conduit and movable toward and away from said saber.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |