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(12) Patent: | (11) CA 2352619 |
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(54) English Title: | MUD TANK CLEANING SYSTEM |
(54) French Title: | SYSTEME DE NETTOYAGE DE BASSIN A BOUE |
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: | LAMBERT INTELLECTUAL PROPERTY LAW |
(74) Associate agent: | |
(45) Issued: | 2008-02-19 |
(22) Filed Date: | 2001-07-06 |
(41) Open to Public Inspection: | 2003-01-06 |
Examination requested: | 2003-12-29 |
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 mud tank cleaning system includes a debris collection sweep that drives debris towards a collection zone in a mud tank, whence the debris can easily be mechanically disposed of through an opening in the mud tank. Preferably, the collection zone is in a central depressed part of the mud tank to allow gravity to assist in moving debris towards the collection zone. Preferably, a pair of collection sweeps are used on opposed sides of the collection zone. The collection sweeps are preferably pivotally mounted to follow an arcuate path along the surface of a cylindrical confining wall of the mud tank. Sweep drive mechanisms operate the sweeps. The collection sweeps are preferably used in conjunction with a disposal sweep that sweeps debris collected in the collection zone by the collection sweeps out of the collection zone and through the opening in the mud tank, from where it may be readily disposed of. The mud tank is typically operated in conjunction with a hydrovac vehicle.
Un système de nettoyage de bassins à boue comprend un balai de collecte de débris qui entraîne les débris vers une zone de collecte dans un bassin à boue, où les débris peuvent facilement être mécaniquement éliminés au travers d'une ouverture dans le bassin à boue. De préférence, la zone de collecte est dans une partie centrale en creux du bassin à boue pour permettre à la gravité d'aider au déplacement des débris vers la zone de collecte. De préférence, deux balais de collecte sont utilisés sur des côtés opposés de la zone de collecte. Les balais de collecte sont de préférence montés de manière pivotante pour suivre un trajet en forme d'arc le long de la surface d'une paroi de confinement cylindrique du bassin à boue. Des mécanismes d'entraînement entraînent lesdits balais. Les balais de collecte sont de préférence utilisés en liaison avec des balais d'élimination qui ramassent les débris recueillis dans la zone de collecte par les balais de collecte et éliminés hors de la zone de collecte et à travers l'ouverture dans le bassin à boue, d'où ils peuvent facilement être éliminés. Le bassin à boue est généralement utilisé en conjonction avec un véhicule de type hydrovac.
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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Time Limit for Reversal Expired | 2018-07-06 |
Letter Sent | 2017-07-06 |
Inactive: Late MF processed | 2015-10-28 |
Letter Sent | 2015-07-06 |
Letter Sent | 2015-02-25 |
Maintenance Request Received | 2014-07-03 |
Maintenance Request Received | 2013-07-03 |
Inactive: Late MF processed | 2012-07-17 |
Letter Sent | 2012-07-06 |
Letter Sent | 2012-06-22 |
Inactive: Correspondence - Transfer | 2011-07-20 |
Inactive: Correspondence - Transfer | 2011-06-16 |
Letter Sent | 2010-08-12 |
Letter Sent | 2010-01-25 |
Inactive: Single transfer | 2010-01-19 |
Grant by Issuance | 2008-02-19 |
Inactive: Cover page published | 2008-02-18 |
Letter Sent | 2007-12-10 |
Inactive: Final fee received | 2007-11-26 |
Pre-grant | 2007-11-26 |
Inactive: Single transfer | 2007-11-26 |
Appointment of Agent Requirements Determined Compliant | 2007-07-30 |
Inactive: Office letter | 2007-07-30 |
Inactive: Office letter | 2007-07-30 |
Revocation of Agent Requirements Determined Compliant | 2007-07-30 |
Letter Sent | 2007-07-17 |
Appointment of Agent Request | 2007-07-06 |
Revocation of Agent Request | 2007-07-06 |
Inactive: Single transfer | 2007-07-06 |
Notice of Allowance is Issued | 2007-05-24 |
Notice of Allowance is Issued | 2007-05-24 |
Letter Sent | 2007-05-24 |
Inactive: IPC assigned | 2007-05-07 |
Inactive: IPC assigned | 2007-05-07 |
Inactive: Approved for allowance (AFA) | 2007-04-26 |
Amendment Received - Voluntary Amendment | 2006-11-09 |
Letter Sent | 2006-11-09 |
Inactive: Single transfer | 2006-10-04 |
Inactive: S.30(2) Rules - Examiner requisition | 2006-05-09 |
Inactive: IPC from MCD | 2006-03-12 |
Inactive: IPC from MCD | 2006-03-12 |
Letter Sent | 2006-02-28 |
Inactive: Correspondence - Formalities | 2004-02-09 |
Inactive: Corrective payment - Application fee | 2004-01-19 |
Inactive: Office letter | 2004-01-19 |
Inactive: Entity size changed | 2004-01-19 |
Letter Sent | 2004-01-12 |
Request for Examination Requirements Determined Compliant | 2003-12-29 |
All Requirements for Examination Determined Compliant | 2003-12-29 |
Request for Examination Received | 2003-12-29 |
Inactive: Correspondence - Formalities | 2003-12-12 |
Amendment Received - Voluntary Amendment | 2003-11-07 |
Inactive: Correspondence - Formalities | 2003-10-22 |
Inactive: Office letter | 2003-10-10 |
Inactive: Entity size changed | 2003-07-21 |
Application Published (Open to Public Inspection) | 2003-01-06 |
Inactive: Cover page published | 2003-01-05 |
Inactive: Correspondence - Formalities | 2002-10-28 |
Inactive: IPC removed | 2001-09-17 |
Inactive: First IPC assigned | 2001-09-17 |
Inactive: First IPC assigned | 2001-08-28 |
Inactive: IPC assigned | 2001-08-28 |
Application Received - Regular National | 2001-08-01 |
Inactive: Filing certificate - No RFE (English) | 2001-08-01 |
There is no abandonment history.
The last payment was received on 2007-07-06
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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PREMIER OILFIELD EQUIPMENT CO. |
Past Owners on Record |
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ROBERT C. RAJEWSKI |