Patent US3584452A successfully refreshed from Google Patents.
US3584452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evacuation means for an open end spinning device
Assignee: Maschinenfabrik Rieter AG
•
Filing: 1968-09-23
•
Granted: 1971-06-15
•
Expires: 1988-09-23
Abstract
Abstract The spinning device has a cover disposed over the rotor to project into the opening of the rotor with a clearance therebetween to permit evacuation of the rotor upon spinning. The cover can be provided with a groove or vane to facilitate the evacuation of the rotor or the rotor can be provided with a flange or blades to facilitate evacuation.
Inventors
- 👤 Adolf Schiltknecht
- 👤 Max Graf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:18
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/04; D01H4/08; D01H4/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
101 words
The combination of a rotor of an open end spinning device having an open end on the side facing a fiber feed point and an internal fiber collecting surface, a cover over said open end of said rotor, and means for evacuating said fiber collecting surface, said means being mounted on one of said rotor and said cover and spaced from said fiber collecting surface and a fiber feed path between said feed point and said fiber collecting surface to evacuate air from within said rotor through a path between said rotor and said cover into a space surrounding said rotor.
Claim 2
Dependent Claim
101 words
The combination of a rotor of an open end spinning device having an open end on the side facing a fiber feed point and an internal fiber collecting surface, a cover over said open end of said rotor, and means for evacuating said fiber collecting surface, said means being mounted on one of said rotor and said cover and spaced from said fiber collecting surface and a fiber feed path between said feed point and said fiber collecting surface to evacuate air from within said rotor through a path between said rotor and said cover into a space surrounding said rotor.
Claim 3
Dependent Claim
44 words
The combination as set forth in clam 1 wherein said means includes a collar on said rotor about said open end extending upwardly therefrom, and a stem portion on said cover projecting into said collar in spaced relation thereto to define an annular clearance.
Claim 4
Dependent Claim
44 words
The combination as set forth in clam 1 wherein said means includes a collar on said rotor about said open end extending upwardly therefrom, and a stem portion on said cover projecting into said collar in spaced relation thereto to define an annular clearance.
Claim 5
Dependent Claim
33 words
The combination as set forth in claim 2 wherein said stem portion has a conical wall thereon and said collar has a complementary conical wall thereon in facing relation to said stem portion.
Claim 6
Dependent Claim
29 words
The combination as set forth in claim 3 wherein said cover is adjustably mounted axially of said rotor to vary the clearance between said stem portion and said collar.
Claim 7
Dependent Claim
30 words
The combination as set forth in claim 2 which further comprises an evacuation groove in said stem portion facing said collar and extending upwardly beyond the plane of said collar.
Claim 8
Dependent Claim
18 words
The combination as set forth in claim 5 wherein said groove is helically disposed on said stem portion.
Claim 9
Dependent Claim
39 words
The combination as set forth in claim 1 wherein said cover protrudes into said rotor at said open end and said means includes a radial flange on said rotor about said open end in the plane of said cover.
Claim 10
Dependent Claim
26 words
The combination as set forth in claim 7 which further comprises a plurality of upstanding blades on said radial flange in the plane of said cover.
Claim 11
Dependent Claim
39 words
The combination as set forth in claim 1 wherein said cover protrudes into said rotor at said open end and said means includes a plurality of blades on the exterior of said rotor within the plane of said cover.
Claim 12
Dependent Claim
30 words
The combination as set forth in claim 3 which further comprises an evacuation groove in said stem portion facing said collar and extending upwardly beyond the plane of said collar.
Claim 13
Dependent Claim
45 words
The combination as set forth in claim 1 where said means includes a stem portion on said cover projecting into the plane of said rotor in spaced relation therewith and a helical groove in said stem portion defining said path for the evacuation of air.
Claim 14
Dependent Claim
51 words
The combination as set forth in claim 1 wherein said cover includes a stem portion projecting into the plane of said rotor and said means includes a helical rib on said stem portion in facing relation to said rotor to act as a guide blade to evacuate air from the rotor.
Claim 15
Dependent Claim
46 words
The combination as set forth in claim 1 wherein said means includes a plurality of blades on said rotor for creating a suction force to draw air from within the rotor during rotation of said rotor, said blades being mounted on the exterior of said rotor.
Claim 16
Dependent Claim
91 words
The combination of a rotor of an open end spinning device having an open end and an internal fiber collecting surface, a cover over said open end of said rotor, said cover being spaced from said rotor to define a flow path therebetween for the evacuation of air from within said rotor, and means for evacuating said fiber collecting surface disposed in said flow path to evacuate air from within said rotor through said means and through said path between said rotor and said cover into a space surrounding said rotor.
Claim 17
Dependent Claim
91 words
The combination of a rotor of an open end spinning device having an open end and an internal fiber collecting surface, a cover over said open end of said rotor, said cover being spaced from said rotor to define a flow path therebetween for the evacuation of air from within said rotor, and means for evacuating said fiber collecting surface disposed in said flow path to evacuate air from within said rotor through said means and through said path between said rotor and said cover into a space surrounding said rotor.
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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |