Patent US6538649B2 successfully refreshed from Google Patents.
US4389931A
Expired / Lapsed
US
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Apparatus for the compaction of fibers
Assignee: Luwa Ltd
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Filing: 1981-07-20
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Granted: 1983-06-28
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Expires: 2001-07-20
Abstract
Abstract A substantially funnel-shaped constricting fiber chute or shaft possesses at its lower portion blade springs forming a diaphragm or the like. These blade springs extend at an acute angle with respect to the lengthwise axis of the fiber chute. At their free ends these blade springs delimit an exit or outlet opening, by means of which the fiber chute opens into a container, such as a bag or sack or the like which is exchangeably secured at such fiber chute. A driveable plunger arranged coaxially with respect to the fiber chute possesses a plunger head which tapers in the outlet direction. The plunger head possesses a toothed or serrated band. Upon penetration of the plunger into the fiber chute or shaft the plunger head compacts fibers which have collected in the fiber chute and expresses such, while further compacting the same, into the sack. The equipment is particularly suitable for use at a fiber separator at which the fibers separated from a transport air current or stream drop into the fiber chute.
Inventors
- 👤 Hanspeter Sutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:18
CPC Classifications
D; D01; D01G; D01G23/00; D01G23/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
142 words
An apparatus for the compaction of fibers comprising: a housing; means defining a fiber outlet arranged at one side of said housing; a yieldable and expandable diaphragm means operatively associated with the fiber outlet; a driveable plunger arranged in said housing and directed towards said fiber outlet; means for moving said driveable plunger between a retracted terminal position and an advanced terminal position; said means providing said fiber outlet forming a fiber chute which decreases in cross-section in a fiber outlet direction; said fiber chute having an end portion located at an outlet side of said fiber chute; at least said end portion of said fiber chute being formed by said diaphragm means; said plunger, in its advanced terminal postion, directly penetrating into said diaphragm means; and said diaphragm means being predominantly resilient in a direction transverse to said fiber outlet direction.
Claim 2
Independent Claim
142 words
An apparatus for the compaction of fibers comprising: a housing; means defining a fiber outlet arranged at one side of said housing; a yieldable and expandable diaphragm means operatively associated with the fiber outlet; a driveable plunger arranged in said housing and directed towards said fiber outlet; means for moving said driveable plunger between a retracted terminal position and an advanced terminal position; said means providing said fiber outlet forming a fiber chute which decreases in cross-section in a fiber outlet direction; said fiber chute having an end portion located at an outlet side of said fiber chute; at least said end portion of said fiber chute being formed by said diaphragm means; said plunger, in its advanced terminal postion, directly penetrating into said diaphragm means; and said diaphragm means being predominantly resilient in a direction transverse to said fiber outlet direction.
Claim 3
Dependent Claim
21 words
The apparatus as outlined in claim 1, wherein: said plunger possesses a plunger head which constrictingly tapers in the outlet direction.
Claim 4
Dependent Claim
33 words
The apparatus as outlined in claim 2, wherein: said diaphragm means comprises blade springs; and said blade springs extending at an angle of less than 45° with respect to the fiber outlet direction.
Claim 5
Dependent Claim
33 words
The apparatus as defined in claim 1, wherein: said diaphragm means comprises blade springs; and said blade springs extending at an angle of less than 45° with respect to said fiber outlet direction.
Claim 6
Dependent Claim
44 words
The apparatus as defined in claim 4, wherein: said fiber chute encompasses a substantially conical ring member; said conical ring member having an outer surface; and said blade springs being secured at upper ends thereof at the outer surface of said conical ring member.
Claim 7
Dependent Claim
16 words
The apparatus as defined in claim 5, wherein: said blade springs mutually overlap in circumferential direction.
Claim 8
Dependent Claim
17 words
The apparatus as defined in claim 2, wherein: said plunger head is constricted in a step-like manner.
Claim 9
Dependent Claim
44 words
The apparatus as defined in claim 2, wherein: said plunger head possesses a substantially truncated conical configuration; said plunger head having an outer surface; and at least one metallic band provided with downwardly directed serrations provided at said outer surface of said plunger head.
Claim 10
Dependent Claim
27 words
The apparatus as defined in claim 8, wherein: said metallic band extends at the outer surface of said plunger head in the form of a screw line.
Claim 11
Dependent Claim
70 words
The apparatus as defined in claim 1, further including: fiber separator means containing tangential air entry means arranged in said housing; said fibers separator containing a raw air chamber and a clean air chamber; said plunger, in the retracted terminal position thereof, being located in the raw air chamber; and a filter body structured as a body of rotation and separating the clean air chamber from the raw air chamber.
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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) | 1986-06-27 | 1986-12-27 | 1987-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-27 | 1990-12-27 | 1991-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-27 | 1994-12-27 | 1995-06-28 | $7700.00 | Window Closed / Lapsed |