Patent US4948658A successfully refreshed from Google Patents.
Patent US3750302A successfully refreshed from Google Patents.
US3750302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet device
Assignee: EIDP Inc
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Filing: 1971-04-23
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Granted: 1973-08-07
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Expires: 1991-04-23
Abstract
Abstract An apparatus for heat treating a plurality of filaments arranged in a ribbon-like array that includes a base having a planar surface, a pair of upstanding walls attached to the base between which the filaments pass for treatment and a transverse slot through the planar surface in communication with a source of heated pressurized fluid, improves uniformity and efficiency of heat transfer to the filaments. A particular relationship between the slot, the planar surface of the base and the walls enables the fluid stream issuing from the slot to first pass upwardly through the filaments then turn downwardly and attach to the planar surface at a point downstream of the slot where it flows parallel to the filament array to provide an extended heating zone.
Inventors
- 👤 D Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:04
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
85 words
A filament treating apparatus comprising: a base having a planar surface; a pair of spaced upstanding walls attached to the base to form with said base an open channel through which filaments pass for treatment; said base having therein a transverse slot extending the distance between said walls, said slot terminating at said planar surface and being oriented in a downstream direction with respect thereto at an angle of fRom about 15* to about 45*; and a source of pressurized fluid connected to said slot.
Claim 2
Dependent Claim
85 words
A filament treating apparatus comprising: a base having a planar surface; a pair of spaced upstanding walls attached to the base to form with said base an open channel through which filaments pass for treatment; said base having therein a transverse slot extending the distance between said walls, said slot terminating at said planar surface and being oriented in a downstream direction with respect thereto at an angle of fRom about 15* to about 45*; and a source of pressurized fluid connected to said slot.
Claim 3
Dependent Claim
28 words
The apparatus of claim 1, said slot being defined in part by walls approaching said planar surface at a diverging angle of from about 1* to about 7*.
Claim 4
Independent Claim
138 words
An apparatus for treating a plurality of filaments arranged in a ribbon-like array comprising: a base having a planar surface with a slot therethrough; a pair of spaced upstanding walls fastened to the base to form with said planar surface an open channel through which the array passes for treatment; said slot extending the distance between said walls and being defined in part by upstream and downstream walls, said downstream wall comprising a flat surface terminating at an angle of from about 15* to about 45* with said planar surface, said upstream wall comprising, with respect to said downstream wall, converging and diverging lengths with said diverging length terminating at said planar surface at an angle of from about 1* to about 7* with said downstream surface; and a source of heated pressurized fluid connected to said slot.
Claim 5
Independent Claim
138 words
An apparatus for treating a plurality of filaments arranged in a ribbon-like array comprising: a base having a planar surface with a slot therethrough; a pair of spaced upstanding walls fastened to the base to form with said planar surface an open channel through which the array passes for treatment; said slot extending the distance between said walls and being defined in part by upstream and downstream walls, said downstream wall comprising a flat surface terminating at an angle of from about 15* to about 45* with said planar surface, said upstream wall comprising, with respect to said downstream wall, converging and diverging lengths with said diverging length terminating at said planar surface at an angle of from about 1* to about 7* with said downstream surface; and a source of heated pressurized fluid connected to said slot.
Claim 6
Dependent Claim
23 words
The apparatus as defined in claim 3, said upstream wall including length parallel to said downstream wall between said converging and diverging lengths.
Claim 7
Dependent Claim
27 words
The apparatus as defined in claim 3, including a smoothly contoured surface attached to the downstream end of said base sloping downwardly away from said planar surface.
Claim 8
Dependent Claim
15 words
The apparatus as defined in claim 3, said upstanding walls being parallel to each other.
Claim 9
Dependent Claim
25 words
The apparatus as defined in claim 3, said downstream wall terminating at an angle of from about 20* to about 40* with said planar surface.
Claim 10
Dependent Claim
55 words
The apparatus as defined in claim 3, said downstream wall terminating at said planar surface in an edge having a radius of less than 0.005 inch and at an angle of about 30*, said diverging length terminating at said planar surface and being at an angle of about 3* with respect to said downstream surface.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |