US3672588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strand control apparatus
Assignee: Leesona Corp
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Filing: 1970-09-08
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Granted: 1972-06-27
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Expires: 1990-09-08
Abstract
Abstract An apparatus and a method embodied in a guide for an advancing strand of yarn. The guide retains the strand on a receiver which is supported on a cushion of air. The receiver is pivotally retained between opposed members extending from a base of the guide. The strand urges the receiver toward the base and the cushion of air, which is introduced between the members proximate the base, urges the receiver away from the base. As the air is vented about the receiver the advancing strand is substantially out of contact with the air to prevent removal of coatings from the strand or entanglement of filaments of the strand. Response of the receiver to variations in the force exerted thereon by the strand may be programmed by regulating venting of the air about the receiver.
Inventors
- 👤 William M Bense
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:25
CPC Classifications
B; B65; B65H; B65H57/00; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
224 words
Strand control mechanism for guiding an advancing strand comprising, a member having a confined area defining a strand passageway therein, said passageway opening outwardly from said member to provide a free end of said passageway, said passageway being wider than said strand to permit free advance of the strand therethrough, inlet means opening into said passageway at a location spaced from said free end and operable to emit pressurized fluid toward said free end, strand engaging means positioned in said passageway intermediate said inlet means and said free end, said strand engaging means having a first surface toward said inlet means against which the pressurized fluid is directed and a second surface on the opposite side of the strand engaging means over which said strand moves during its advance through said passageway, means mounting said strand engaging means for movement in a zone intermediate said inlet means and said free end, said strand engaging means being biased toward said inlet means in response to tension in the advancing strand and said strand engaging means being biased toward said free end in response to said pressurized fluid, and means cooperable with said strand engaging means for defining a venting passage for controlled release of said pressurized fluid from said zone to thereby control the biasing force of said pressurized fluid on said strand engaging means.
Claim 2
Dependent Claim
224 words
Strand control mechanism for guiding an advancing strand comprising, a member having a confined area defining a strand passageway therein, said passageway opening outwardly from said member to provide a free end of said passageway, said passageway being wider than said strand to permit free advance of the strand therethrough, inlet means opening into said passageway at a location spaced from said free end and operable to emit pressurized fluid toward said free end, strand engaging means positioned in said passageway intermediate said inlet means and said free end, said strand engaging means having a first surface toward said inlet means against which the pressurized fluid is directed and a second surface on the opposite side of the strand engaging means over which said strand moves during its advance through said passageway, means mounting said strand engaging means for movement in a zone intermediate said inlet means and said free end, said strand engaging means being biased toward said inlet means in response to tension in the advancing strand and said strand engaging means being biased toward said free end in response to said pressurized fluid, and means cooperable with said strand engaging means for defining a venting passage for controlled release of said pressurized fluid from said zone to thereby control the biasing force of said pressurized fluid on said strand engaging means.
Claim 3
Dependent Claim
39 words
Apparatus as set forth in claim 1 wherein said means cooperable with said strand engaging means for defining said venting passage includes at least one wall area in said passageway spaced a predetermined distance from said strand engaging means.
Claim 4
Dependent Claim
49 words
Apparatus as set forth in claim 2 wherein said wall area is elongated and is of varying depths in a direction from said inlet means to said free end to thereby provide a venting passage of varying size as said strand engaging means moves progressively toward said free end.
Claim 5
Dependent Claim
48 words
Apparatus as set forth in claim 2 wherein saId wall area is elongated and increases in depth in a direction from said inlet means to said free end to thereby provide a venting passage of increasing size as said strand engaging means moves progressively toward said free end.
Claim 6
Dependent Claim
48 words
Apparatus as set forth in claim 2 wherein said wall area is elongated and decreases in depth in a direction from said inlet means to said free end to thereby provide a venting passage of decreasing size as said strand engaging means moves progressively toward said free end.
Claim 7
Dependent Claim
43 words
Apparatus as set forth in claim 2 wherein said strand engaging means is an elongated element, and said mounting means includes pivot means engageable with one end of the element to permit said element to rock about said pivot means in said zone.
Claim 8
Dependent Claim
29 words
Apparatus as set forth in claim 2 wherein said strand engaging means is an elongated element and said zone includes a recess in which said element is freely slidable.
Claim 9
Dependent Claim
30 words
Apparatus as set forth in claim 1 wherein said member is mounted on an arm, said arm including a conduit for delivering the pressurized fluid to said fluid emitting means.
Claim 10
Dependent Claim
49 words
Apparatus as set forth in claim 1 wherein said member includes a pair of guides fixed in juxtaposed relationship, said passageway being between said guides, said guides being joined together at respective first ends to define a base of the member, said inlet means being located in said base.
Claim 11
Dependent Claim
200 words
Strand control mechanism for guiding an advancing strand comprising, a pair of guides fixed together at first ends thereof to define a base of the mechanism and having a confined strand passageway between said guides through which said strand is advanced, said guides being unconnected at respective second ends thereof to provide a free end of the passageway, inlet means opening into said passageway from a position proximate said base and operating to direct a fluid stream toward said free end, strand engaging means positioned in said passageway intermediate said base and said free end, said strand engaging means having a first surface toward said inlet means against which the fluid stream is directed and a second surface on the opposite side from said first surface over which the strand moves during its advance through said passageway, means mounting the strand engaging means for movement in a restricted zone in said passageway, and side walls in said zone spaced from and confronting opposite sides of said strand engaging means to provide a clearance space between said sidewalls and said opposite sides for the passage of fluid from said inlet means during advance of the strand over said strand engaging means.
Claim 12
Dependent Claim
200 words
Strand control mechanism for guiding an advancing strand comprising, a pair of guides fixed together at first ends thereof to define a base of the mechanism and having a confined strand passageway between said guides through which said strand is advanced, said guides being unconnected at respective second ends thereof to provide a free end of the passageway, inlet means opening into said passageway from a position proximate said base and operating to direct a fluid stream toward said free end, strand engaging means positioned in said passageway intermediate said base and said free end, said strand engaging means having a first surface toward said inlet means against which the fluid stream is directed and a second surface on the opposite side from said first surface over which the strand moves during its advance through said passageway, means mounting the strand engaging means for movement in a restricted zone in said passageway, and side walls in said zone spaced from and confronting opposite sides of said strand engaging means to provide a clearance space between said sidewalls and said opposite sides for the passage of fluid from said inlet means during advance of the strand over said strand engaging means.
Claim 13
Dependent Claim
22 words
Apparatus as set forth in claim 10 including means for preventing movement of said strand engaging means out of said free end.
Claim 14
Dependent Claim
14 words
Apparatus as set forth in claim 10 wherein said fluid stream is pressurized air.
Claim 15
Dependent Claim
29 words
Apparatus as set forth in claim 10 wherein said side walls are elongated and are of varying depths in a direction from said inlet means to said free end.
Claim 16
Dependent Claim
28 words
Apparatus as set forth in claim 10 wherein said side walls are elongated and increase in depth in a direction from said inlet means to said free end.
Claim 17
Dependent Claim
28 words
Apparatus as set forth in claim 10 wherein said side walls are elongated and decrease in depth in a direction from said inlet means to said free end.
Claim 18
Dependent Claim
43 words
Apparatus as set forth in claim 10 wherein said strand engaging means is an elongated element, and said mounting means includes pivot means engageable with one end of the element to permit said element to rock about said pivot means in said zone.
Claim 19
Dependent Claim
29 words
Apparatus as set forth in claim 10 wherein said strand engaging means is an elongated element, and said zone defines a recess in which said element is freely slidable.
Claim 20
Dependent Claim
31 words
Apparatus as set forth in claim 10 wherein said guides are mounted on an elongated arm, said arm including a conduit for delivering the pressurized fluid to the fluid emitting means.
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |