Patent US3581706A successfully refreshed from Google Patents.
US3581706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for uniformly distributing a disintegrated fibrous material on a fibre layer forming surface
Assignee: Individual
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Filing: 1969-11-13
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Granted: 1971-06-01
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Expires: 1989-11-13
Abstract
Abstract An apparatus for uniformly distributing a disintegrated material on a fiber layer forming surface comprising a cylindrical housing having a perforated plane-surfaced bottom wall, an inlet opening for a stream of air containing suspended fibers and a stirrer having impellers rotating a short distance above the perforated bottom wall.
Inventors
- 👤 Torben Borup Rasmussen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:18
CPC Classifications
D; D21; D21H; D21H11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
An apparatus as in claim 1, wherein the stirring device consists of a central shaft supporting at least two auxiliary shafts, each shaft having at its upper end means engaging with an annular ring connected to the top wall of said housing and having at its lower end an impeller mounted thereto.
Claim 2
Dependent Claim
63 words
An apparatus as in claim 1, wherein a narrow slit is provided in the sidewall of the housing adjacent said bottom wall and wherein an air same is mounted at the slit, said air nozzle being connected to a source of compressed air and being mounted so as to allow an air current produced in the same to pass out through the slit.
References Cited (Backward Citations)
US1864740A
Cited
US2949312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |