Continuous cyclindrical wood pulp refiner
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 29, 1998
Grant Date -
N/A
app pub date -
Nov 28, 1995
filing date -
Nov 28, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A continuous cylindrical wood pulp refiner comprising a rotor disposed in a housing having a plurality of structural members. At least one refining plate is mounted to a holder portion of each member such that the entire periphery of the rotor is exposed to refining plates. The pulp to be refined continuously flows axially along the periphery of the rotor. The members define two shells which are pivotally mounted to the refiner base such that the shells may be pivoted away from each other to provide access to the interior surface for changing the refiner plates. Each holder portion has a pair of bores which are parallel to the axis of the rotor. A cam portion of a cam shaft is disposed in each bore. Rotating the cam shaft causes the cam portion to engage the surface of the bore thereby moving the holder portion radially towards or away from the rotor whereby the gap between the refining plates and the rotor can be adjusted. A gear is mounted on an end portion of each cam shaft which extends longitudinally outward through an orifice in the housing. First and second chains engage each gear mounted to the cam shafts which are disposed in the first and second shells, respectively. One of the gears mounted on a cam shaft disposed in the first shell engages one of the gears mounted on a cam shaft disposed in the second shell. A gear motor actuates movement of one of the chains wherein the movement of all of the cam shafts is coordinated to synchronize movement of all of the holders to uniformly adjust the gap.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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ANDRITZ SPROUT-BAUSER INC | SHERMAN STREET MUNCY PA 17756 |
International Classification(s)

- 1995 Application Filing Year
- B02C Class
- 248 Applications Filed
- 89 Patents Issued To-Date
- 35.89 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Prew, Stanley R | Williamsport, PA | 8 | 77 |
# of filed Patents : 8 Total Citations : 77 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 7 Citation Count
- B02C Class
- 9.88 % this patent is cited more than
- 27 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

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Apr 12, 2021 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4 |
Sep 25, 2019 | AS | ASSIGNMENT | free format text: SECURITY INTEREST;ASSIGNOR:TELEFLEX MEDICAL INCORPORATED;REEL/FRAME:050620/0904 Owner name: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT Effective Date: Sep 25, 2019 free format text: SECURITY INTEREST;ASSIGNOR:TELEFLEX MEDICAL INCORPORATED;REEL/FRAME:050620/0904 Owner name: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT, ILLINOIS Effective Date: Sep 25, 2019 |
Oct 10, 2017 | I | Issuance | |
Sep 20, 2017 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Feb 17, 2017 | AS | ASSIGNMENT | free format text: SECURITY INTEREST;ASSIGNOR:TELEFLEX MEDICAL INCORPORATED;REEL/FRAME:041761/0470 Owner name: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT, ILLINOIS Effective Date: Feb 17, 2017 free format text: SECURITY INTEREST;ASSIGNOR:TELEFLEX MEDICAL INCORPORATED;REEL/FRAME:041761/0470 Owner name: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT Effective Date: Feb 17, 2017 |
Sep 11, 2014 | P | Published | |
Mar 13, 2014 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BURK, MARC ALAN;DWYER, DANIEL PATRICK;ROTH, GARY JAMES;AND OTHERS;SIGNING DATES FROM 20130325 TO 20130329;REEL/FRAME:032429/0307 Owner name: TELEFLEX MEDICAL INCORPORATED, NORTH CAROLINA |
Mar 07, 2014 | F | Filing |

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