US4353149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat cleaning system for a card
Assignee: Maschinenfabrik Rieter AG
•
Filing: 1979-10-22
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Granted: 1982-10-12
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Expires: 1999-10-22
Abstract
Abstract Flat cleaning system for a card equipped with a set of revolving flats, in which the flats (12) consist of a T-shaped profile, and in which, by temporary sealing, of the room between the webs 18, 18a of two neighboring flats (12,12a) using a sealing element 30, a longitudinal duct is formed, in which duct an air stream is generated. By this air stream, any fly waste accumulated on the back side of, and between the flats 12, 12a is eliminated. The air stream in the duct, generated by lateral suction, cleans any fly waste and dust particles accumulated in the duct out of the duct, only low energy suction being required.
Inventors
- 👤 Robert Demuth
- 👤 Anton Wuest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:00
CPC Classifications
D; D01; D01G; D01G15/00; D01G15/76; D01G15/78; D01G15/785
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
183 words
A flat cleaning system for cards comprising a set of revolving flats, the individual flats not being in mutual contact, each flat having a T-shaped profile with legs on both sides of a web which extends towards the inside of the flat room formed by the set of flats, the legs supporting a point clothing on their working surface, and the group of flats located at the main drum being guided along the surface of the main drum; a sealing element adapted to temporarily form an air tight seal between the room formed by the set of revolving flats and the particular neighboring flats the seal is temporarily disposed over; said sealing element forming at least one duct between the neighboring flats as the set of flats revolve; said sealing element including a fixed plate which hugs the curvature of the flat path in the direction of the flat movement and along which the free end of the web moves in order to form a sealing point; and air stream generating means, coordinated to said at least one duct, for cleaning said flats.
Claim 2
Dependent Claim
183 words
A flat cleaning system for cards comprising a set of revolving flats, the individual flats not being in mutual contact, each flat having a T-shaped profile with legs on both sides of a web which extends towards the inside of the flat room formed by the set of flats, the legs supporting a point clothing on their working surface, and the group of flats located at the main drum being guided along the surface of the main drum; a sealing element adapted to temporarily form an air tight seal between the room formed by the set of revolving flats and the particular neighboring flats the seal is temporarily disposed over; said sealing element forming at least one duct between the neighboring flats as the set of flats revolve; said sealing element including a fixed plate which hugs the curvature of the flat path in the direction of the flat movement and along which the free end of the web moves in order to form a sealing point; and air stream generating means, coordinated to said at least one duct, for cleaning said flats.
Claim 3
Dependent Claim
18 words
Flat cleaning system according to claim 1, wherein the sealing element extends over a plurality of neighbouring flats.
Claim 4
Dependent Claim
21 words
Flat cleaning system according to claim 1, wherein the sealing element extends substantially over all flats located at the main drum.
Claim 5
Dependent Claim
27 words
Flat cleaning system according to claim 1, wherein the sealing element consists of a fixed, flexible apron which is supported on the upper side of the webs.
Claim 6
Dependent Claim
15 words
Flat cleaning system according to claim 4, wherein the apron consits of synthetic plastic material.
Claim 7
Dependent Claim
27 words
Flat cleaning system according to claim 4, wherein the apron on the side facing the webs is provided with a low friction and low electrostatic chargeability surface.
Claim 8
Dependent Claim
28 words
Flat cleaning system according to claims 3 or 4, further including flat deflecting means around which the set of flats revolves to which the flexible apron is anchored.
Claim 9
Dependent Claim
34 words
Flat cleaning system according to claim 1, further including suction duct means leading to the means for generating an air stream which air stream generating means merges into the duct at its face side.
Claim 10
Dependent Claim
24 words
Flat cleaning system according to claim 1, wherein the sealing element is formed by a body which rolls on the webs of the flats.
Claim 11
Dependent Claim
32 words
Flat cleaning system according to claim 1, wherein sealing action occurs between webs of the neighboring flats directly at the webs themselves whereby the use of elastic sealing bodies is rendered unnecessary.
Claim 12
Dependent Claim
19 words
Flat cleaning system according to claim 1, wherein suction action occurs in the lengthwise direction of the individual flats.
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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) | 1985-10-11 | 1986-04-12 | 1986-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-11 | 1990-04-12 | 1990-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-11 | 1994-04-12 | 1994-10-12 | $7700.00 | Window Closed / Lapsed |