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(12) Patent: | (11) CA 2325710 |
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(54) English Title: | ELECTRIC DRIVE SYSTEM FOR PLANER MILL INFEED AND OUTFEED ROLLS |
(54) French Title: | SYSTEME D'ENTRAINEMENT ELECTRIQUE DES CYLINDRES D'ENTREE ET DE SORTIE DE RABOTEUSES |
Status: | Term Expired - Post Grant Beyond Limit |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | BORDEN LADNER GERVAIS LLP |
(74) Associate agent: | |
(45) Issued: | 2002-08-13 |
(22) Filed Date: | 1998-02-20 |
(41) Open to Public Inspection: | 1999-08-20 |
Examination requested: | 2000-08-18 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | None |
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A method and apparatus for converting a conventional mechanical or hydraulic system for driving the infeed and outfeed rolls of a planer mill or a similar conveyor to variable frequency electric power. The method involves disconnecting the roller shafts from pre-existing mechanical and hydraulic drive components housed within the conveyor gearbox or other support frame. The electric motors are mounted at fixed positions on a panel rigidly connected to the gearbox or other support frame at a location spaced-apart from the roller shafts. Each motor is coupled to a corresponding roller shaft by means of a connector drive shaft having universal joint couplers at each end thereof. This arrangement permits displacement of the roller shafts during normal operation of the conveyor without transferring torque forces to the electric motors. The speed of each motor and hence each roller may be independently controlled by a frequency inverter which is operable by remote control.
Méthode et appareil de conversion d'un système mécanique ou hydraulique classique servant à entraîner des cylindres d'entrée et de sortie d'une raboteuse, ou d'un transporteur similaire, à une puissance électrique à fréquence variable. La méthode consiste à déconnecter les arbres de cylindre de composants d'entraînement mécanique et hydraulique préexistants, logés dans la boîte de vitesse de transporteur ou un autre cadre porteur. Les moteurs électriques sont installés en positions fixes sur un panneau connecté rigidement à la boîte de vitesse ou autre cadre porteur, en un emplacement espacé des arbres de cylindre. Chaque moteur est couplé à un arbre de cylindre correspondant au moyen d'un arbre d'entraînement de connecteur ayant des coupleurs de joint universels au niveau de chaque extrémité. Ce dispositif permet de déplacer les arbres de cylindre pendant le fonctionnement normal du transporteur sans transférer les forces de couple aux moteurs électriques. La vitesse de chaque moteur et donc de chaque cylindre peut être commandée indépendamment par un inverseur de fréquence qui peut être actionné par télécommande.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
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Description | Date |
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Inactive: Expired (new Act pat) | 2018-02-20 |
Inactive: Office letter | 2012-07-31 |
Revocation of Agent Requirements Determined Compliant | 2012-07-31 |
Appointment of Agent Requirements Determined Compliant | 2012-07-31 |
Inactive: Office letter | 2012-07-31 |
Revocation of Agent Request | 2012-07-16 |
Appointment of Agent Request | 2012-07-16 |
Inactive: Payment - Insufficient fee | 2010-04-01 |
Inactive: Late MF processed | 2010-03-17 |
Letter Sent | 2010-02-22 |
Appointment of Agent Requirements Determined Compliant | 2009-09-28 |
Inactive: Office letter | 2009-09-28 |
Inactive: Office letter | 2009-09-28 |
Revocation of Agent Requirements Determined Compliant | 2009-09-28 |
Letter Sent | 2009-09-14 |
Revocation of Agent Request | 2009-07-17 |
Appointment of Agent Request | 2009-07-17 |
Revocation of Agent Request | 2009-01-13 |
Revocation of Agent Request | 2009-01-13 |
Appointment of Agent Request | 2009-01-13 |
Appointment of Agent Request | 2009-01-13 |
Appointment of Agent Request | 2008-10-10 |
Revocation of Agent Request | 2008-10-10 |
Inactive: Office letter | 2008-10-10 |
Appointment of Agent Request | 2008-09-09 |
Revocation of Agent Request | 2008-09-09 |
Appointment of Agent Request | 2008-07-24 |
Revocation of Agent Request | 2008-07-24 |
Letter Sent | 2007-04-03 |
Inactive: Office letter | 2005-12-05 |
Appointment of Agent Requirements Determined Compliant | 2005-12-05 |
Revocation of Agent Requirements Determined Compliant | 2005-12-05 |
Inactive: Office letter | 2005-12-05 |
Letter Sent | 2005-11-28 |
Revocation of Agent Request | 2005-11-16 |
Appointment of Agent Request | 2005-11-16 |
Inactive: Single transfer | 2005-11-16 |
Letter Sent | 2005-10-26 |
Inactive: Single transfer | 2005-09-21 |
Grant by Issuance | 2002-08-13 |
Inactive: Cover page published | 2002-08-12 |
Pre-grant | 2002-05-31 |
Inactive: Final fee received | 2002-05-31 |
Notice of Allowance is Issued | 2002-04-22 |
Letter Sent | 2002-04-22 |
Notice of Allowance is Issued | 2002-04-22 |
Inactive: Approved for allowance (AFA) | 2002-04-11 |
Amendment Received - Voluntary Amendment | 2001-12-21 |
Inactive: S.30(2) Rules - Examiner requisition | 2001-06-21 |
Inactive: Cover page published | 2001-02-01 |
Inactive: Office letter | 2001-01-19 |
Inactive: First IPC assigned | 2001-01-04 |
Inactive: IPC assigned | 2001-01-04 |
Letter sent | 2000-12-20 |
Divisional Requirements Determined Compliant | 2000-12-19 |
Application Received - Regular National | 2000-12-19 |
Application Received - Divisional | 2000-08-18 |
Request for Examination Requirements Determined Compliant | 2000-08-18 |
All Requirements for Examination Determined Compliant | 2000-08-18 |
Application Published (Open to Public Inspection) | 1999-08-20 |
There is no abandonment history.
The last payment was received on 2001-10-26
Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following
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Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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USNR/KOCKUMS CANCAR COMPANY |
Past Owners on Record |
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JOHN PER KRYSTEIN |