Patent US4469556A successfully refreshed from Google Patents.
US4469556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow distributor
Assignee: Beloit Technologies Inc
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Filing: 1982-09-29
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Granted: 1984-09-04
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Expires: 2002-09-29
Abstract
Abstract A mechanism for processing paper stock to be supplied to a papermaking machine with a filter having a plurality of axially spaced disks on a horizontal axis with a receiving chamber for receiving stock distributed over an elongate area along which the filter disks are distributed, a flow distributor having a broad delivery channel connected to feed stock to the filter receiving chamber and a broad main flow channel in communication with the delivery channel and a receiving passage at one end with a plurality of baffles in the main flow channel having a main wall portion defining flow passed therebetween and an entry wall portion extending in the direction of flow in the main channel so as to cause the flow to reverse directions, with the main flow channel being tapered from the entry end to the opposite end.
Inventors
- 👤 Charles L. Sanford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:24
CPC Classifications
D; D21; D21D; D21D5/00; D21D5/02; D21D5/04; D21D5/046; B; B01; B01D; B01D33/00; B01D33/15; B01D33/21; B01D33/23; B01D33/70; B01D33/72
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
186 words
A mechanism for processing paper stock to be supplied to a papermaking machine, comprising in combination: a stock filter having an elongate filter area with a receiving chamber for receiving a flow of distributed stock; a flow distributor having a broad delivery channel connected to feed stock to said filter receiving chamber with a broad main flow channel in communication with the delivery channel and a receiving passage leading to the main channel; a plurality of baffles defining distributing paths therebetween turning the flow in a direction opposite to the flow direction of the stock in the receiving passage with the stock flowing to said filter area at uniform flow velocities across the filter area for uniform filtering; said flow distributor delivery channel and said main flow channel extending horizontally and said baffles being vertical and defining vertical distributing paths; and said baffles having a main wall leading to the delivery channel and having an entry wall at right angles to said main wall extending in the direction of flow through the receiving passage so as to cause a reverse of flow from the receiving passage.
Claim 2
Dependent Claim
186 words
A mechanism for processing paper stock to be supplied to a papermaking machine, comprising in combination: a stock filter having an elongate filter area with a receiving chamber for receiving a flow of distributed stock; a flow distributor having a broad delivery channel connected to feed stock to said filter receiving chamber with a broad main flow channel in communication with the delivery channel and a receiving passage leading to the main channel; a plurality of baffles defining distributing paths therebetween turning the flow in a direction opposite to the flow direction of the stock in the receiving passage with the stock flowing to said filter area at uniform flow velocities across the filter area for uniform filtering; said flow distributor delivery channel and said main flow channel extending horizontally and said baffles being vertical and defining vertical distributing paths; and said baffles having a main wall leading to the delivery channel and having an entry wall at right angles to said main wall extending in the direction of flow through the receiving passage so as to cause a reverse of flow from the receiving passage.
Claim 3
Dependent Claim
148 words
A mechanism for processing paper stock to be supplied to a papermaking machine, comprising in combination: a stock filter having an elongate filter area with a receiving chamber for receiving a flow of distributed stock; a flow distributor having a broad delivery channel connected to feed stock to said filter receiving chamber with a broad main flow channel in communication with the delivery channel and a receiving passage leading to the main channel; a plurality of baffles defining distributing paths therebetween turning the flow in a direction opposite to the flow direction of the stock in the receiving passage with the stock flowing to said filter area at uniform flow velocities across the filter area for uniform filtering; and the stock filter having a plurality of axially spaced filters mounted on an axis extending parallel to the elongate filter area with the stock flow entering between the filters.
Claim 4
Dependent Claim
148 words
A mechanism for processing paper stock to be supplied to a papermaking machine, comprising in combination: a stock filter having an elongate filter area with a receiving chamber for receiving a flow of distributed stock; a flow distributor having a broad delivery channel connected to feed stock to said filter receiving chamber with a broad main flow channel in communication with the delivery channel and a receiving passage leading to the main channel; a plurality of baffles defining distributing paths therebetween turning the flow in a direction opposite to the flow direction of the stock in the receiving passage with the stock flowing to said filter area at uniform flow velocities across the filter area for uniform filtering; and the stock filter having a plurality of axially spaced filters mounted on an axis extending parallel to the elongate filter area with the stock flow entering between the filters.
Claim 5
Dependent Claim
32 words
A mechanism for processing paper stock to be supplied to a papermaking machine constructed in accordance with claim 2: and including means for driving the individual filters in rotation about their axes.
Claim 6
Dependent Claim
51 words
A mechanism for precessing paper stock to be supplied to a papermaking machine constructed in accordance with claim 2: wherein said receiving passage is located at one end of said main flow channel of the distributor so that the flow of the stock entering the distributor is all in one direction.
Claim 7
Dependent Claim
49 words
A mechanism for processing paper stock to be supplied to a papermaking machine constructed in accordance with claim 4: wherein the distributor main flow channel is tapered to be uniformly reduced in width from one end to the other with said receiving passage being located at said one end.
Claim 8
Dependent Claim
135 words
A mechanism for distributing the flow of stock over a laterally extended area to a stock filter having an elongate broad filter area for supplying the stock to a papermaking machine, comprising in combination: a flow distributor having a broad delivery channel for feeding stock to the broad filter area and having a broad main flow channel in communication with said delivery channel with a receiving passage leading to said main flow channel; a plurality of baffles defining distributing paths therebetween being in said main flow channel turning the flow in a direction opposite to the flow direction in the receiving passage; and said baffles having a main wall portion extending transverse to the flow in said distributor main flow channel and having an entry wall portion at right angles to the main wall portion.
Claim 9
Dependent Claim
135 words
A mechanism for distributing the flow of stock over a laterally extended area to a stock filter having an elongate broad filter area for supplying the stock to a papermaking machine, comprising in combination: a flow distributor having a broad delivery channel for feeding stock to the broad filter area and having a broad main flow channel in communication with said delivery channel with a receiving passage leading to said main flow channel; a plurality of baffles defining distributing paths therebetween being in said main flow channel turning the flow in a direction opposite to the flow direction in the receiving passage; and said baffles having a main wall portion extending transverse to the flow in said distributor main flow channel and having an entry wall portion at right angles to the main wall portion.
Claim 10
Dependent Claim
64 words
A mechanism for distributing the flow of stock over a laterally extended area to a stock filter having an elongate broad filter area for supplying the stock to a papermaking machine constructed in accordance with claim 6: wherein said main flow channel is tapered from said receiving passage at one end to diminish in cross sectional size to the other end of the channel.
Claim 11
Dependent Claim
112 words
A mechanism for processing paper stock to be supplied to a papermaking machine, comprising in combination: a stock filter having an elongate filter area with a receiving vat for receiving a flow of distributed stock; a flow distributor having a broad delivery channel connected to feed stock to said vat and having a broad main flow channel in communication with the delivery channel which is tapered in the direction of flow and is provided with an inlet at the widest end; and a plurality of L-shaped baffles within the distributor channel with a short leg extending in the direction of flow and limiting the flow entry to the space between the baffles.
Claim 12
Dependent Claim
112 words
A mechanism for processing paper stock to be supplied to a papermaking machine, comprising in combination: a stock filter having an elongate filter area with a receiving vat for receiving a flow of distributed stock; a flow distributor having a broad delivery channel connected to feed stock to said vat and having a broad main flow channel in communication with the delivery channel which is tapered in the direction of flow and is provided with an inlet at the widest end; and a plurality of L-shaped baffles within the distributor channel with a short leg extending in the direction of flow and limiting the flow entry to the space between the baffles.
Claim 13
Dependent Claim
44 words
A mechanism for processing paper stock to be supplied to a papermaking machine constructed in accordance with claim 8: and including a rounded nose portion between the leg and body of at least one L-shaped baffle to prevent fibers from stapling onto the baffle.
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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) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |