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(12) Patent: | (11) CA 2426549 |
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(54) English Title: | WORKPIECE TURNING APPARATUS |
(54) French Title: | APPAREIL POUR RETOURNER LES PIECES A TRAVAILLER |
Status: | Expired and beyond the Period of Reversal |
(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: | OYEN WIGGS GREEN & MUTALA LLP |
(74) Associate agent: | |
(45) Issued: | 2011-01-04 |
(22) Filed Date: | 2003-04-23 |
(41) Open to Public Inspection: | 2004-10-23 |
Examination requested: | 2003-12-19 |
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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This application relates to a self-contained apparatus for mechanically turning individual workpieces travelling on a conveyor, such as lengths of lumber travelling into or exiting from a sawmill. The invention reduces the need for lumber graders to turn lumber manually and thereby helps avoid repetitive motion injuries. The apparatus includes an adjustable height frame which is positionable alongside the conveyor. The frame supports a workpiece holder defining an open-ended slot for temporarily receiving an end portion of a workpiece. When the end of a lumber board or other workpiece is received within the holder, a proximity sensor causes the holder to rotate, thereby turning the workpiece lengthwise 180 degrees. The workpiece is then deposited on to the conveyor in its inverted orientation for further travel thereon. The apparatus may also optionally permit workpieces to pass through the holder when a "skip" rather than an "invert" signal is received. The workpiece holder may be connected to a rotatable shaft driven by an electric or hydraulic motor.
Cette invention concerne un appareil autonome pour le tournage mécanique de pièces mues par un convoyeur, telles que des pièces de bois débité entrant dans une scierie ou en sortant. L'invention réduit la nécessité de faire appel à des classeurs pour tourner manuellement le bois et, du coup, les risques de blessures découlant de mouvements répétitifs. L'appareil comprend un cadre de hauteur réglable qui peut être positionné le long du convoyeur. Le cadre supporte un support de pièce constitué d'une fente aux extrémités ouvertes conçue pour accueillir l'extrémité d'une pièce à travailler. Quand l'extrémité d'une planche de bois ou d'une autre pièce à travailler est logée dans le support, un détecteur de proximité déclenche la rotation du support, ce qui entraîne la rotation longitudinale de la pièce sur 180o. La pièce est ensuite déposée sur le convoyeur dans sa nouvelle orientation et poursuit son chemin. L'appareil peut également, de manière facultative, permettre aux pièces de passer par le support sans être tournées quand un signal pour « laisser passer » la pièce est communiqué plutôt qu'un signal pour la « tourner ». Le support peut être relié à arbre rotatif activé par un moteur électrique ou hydraulique.
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.
2024-08-01:As part of the Next Generation Patents (NGP) transition, the Canadian Patents Database (CPD) now contains a more detailed Event History, which replicates the Event Log of our new back-office solution.
Please note that "Inactive:" events refers to events no longer in use in our new back-office solution.
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Description | Date |
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Time Limit for Reversal Expired | 2015-04-23 |
Letter Sent | 2014-04-23 |
Grant by Issuance | 2011-01-04 |
Inactive: Cover page published | 2011-01-03 |
Letter Sent | 2010-11-08 |
Pre-grant | 2010-10-14 |
Inactive: Single transfer | 2010-10-14 |
Inactive: Final fee received | 2010-10-14 |
Notice of Allowance is Issued | 2010-04-14 |
Letter Sent | 2010-04-14 |
Notice of Allowance is Issued | 2010-04-14 |
Inactive: Approved for allowance (AFA) | 2010-04-06 |
Amendment Received - Voluntary Amendment | 2010-03-09 |
Inactive: S.30(2) Rules - Examiner requisition | 2009-09-17 |
Amendment Received - Voluntary Amendment | 2009-07-08 |
Inactive: S.30(2) Rules - Examiner requisition | 2009-01-09 |
Letter Sent | 2008-10-06 |
Letter Sent | 2008-10-06 |
Amendment Received - Voluntary Amendment | 2008-06-19 |
Inactive: Single transfer | 2008-06-16 |
Inactive: S.30(2) Rules - Examiner requisition | 2007-12-19 |
Amendment Received - Voluntary Amendment | 2007-06-29 |
Inactive: S.30(2) Rules - Examiner requisition | 2006-12-29 |
Inactive: IPC removed | 2006-09-06 |
Inactive: First IPC assigned | 2006-09-06 |
Inactive: IPC removed | 2006-09-06 |
Inactive: IPC from MCD | 2006-03-12 |
Inactive: IPC from MCD | 2006-03-12 |
Application Published (Open to Public Inspection) | 2004-10-23 |
Inactive: Cover page published | 2004-10-22 |
Letter Sent | 2004-10-08 |
Inactive: Delete abandonment | 2004-09-09 |
Inactive: Correspondence - Transfer | 2004-09-08 |
Inactive: Transfer information requested | 2004-08-11 |
Inactive: Abandoned - No reply to Office letter | 2004-07-26 |
Inactive: Single transfer | 2004-07-16 |
Inactive: Single transfer | 2004-07-15 |
Letter Sent | 2004-01-21 |
All Requirements for Examination Determined Compliant | 2003-12-19 |
Request for Examination Requirements Determined Compliant | 2003-12-19 |
Request for Examination Received | 2003-12-19 |
Inactive: First IPC assigned | 2003-07-24 |
Inactive: IPC assigned | 2003-07-24 |
Inactive: Courtesy letter - Evidence | 2003-05-27 |
Correct Inventor Requirements Determined Compliant | 2003-05-23 |
Inactive: Filing certificate - No RFE (English) | 2003-05-23 |
Application Received - Regular National | 2003-05-23 |
There is no abandonment history.
The last payment was received on 2010-04-16
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
Patent fees are adjusted on the 1st of January every year. The amounts above are the current amounts if received by December 31 of the current year.
Please refer to the CIPO
Patent Fees
web page to see all current fee amounts.
Fee Type | Anniversary Year | Due Date | Paid Date |
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Application fee - standard | 2003-04-23 | ||
Request for examination - standard | 2003-12-19 | ||
Registration of a document | 2004-07-16 | ||
MF (application, 2nd anniv.) - standard | 02 | 2005-04-25 | 2005-01-14 |
MF (application, 3rd anniv.) - standard | 03 | 2006-04-24 | 2006-01-11 |
MF (application, 4th anniv.) - standard | 04 | 2007-04-23 | 2007-01-31 |
MF (application, 5th anniv.) - standard | 05 | 2008-04-23 | 2008-01-11 |
Registration of a document | 2008-06-16 | ||
MF (application, 6th anniv.) - standard | 06 | 2009-04-23 | 2009-02-17 |
MF (application, 7th anniv.) - standard | 07 | 2010-04-23 | 2010-04-16 |
Final fee - standard | 2010-10-14 | ||
Registration of a document | 2010-10-14 | ||
MF (patent, 8th anniv.) - standard | 2011-04-25 | 2011-02-25 | |
MF (patent, 9th anniv.) - standard | 2012-04-23 | 2012-04-23 | |
MF (patent, 10th anniv.) - standard | 2013-04-23 | 2013-04-15 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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COBALT INDUSTRIES LTD. |
Past Owners on Record |
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JOHN P. KYRSTEIN |