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Any discrepancies in the text and image of the Claims and Abstract are due to differing posting times. Text of the Claims and Abstract are posted:
(12) Patent: | (11) CA 2357481 |
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(54) English Title: | POWER STEERING DEVICE |
(54) French Title: | SERVODIRECTION |
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: | DENNISON ASSOCIATES |
(74) Associate agent: | |
(45) Issued: | 2005-04-05 |
(22) Filed Date: | 2001-09-19 |
(41) Open to Public Inspection: | 2002-03-29 |
Examination requested: | 2001-09-19 |
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: | ||||||
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To provide a power steering device capable of
increasing a degree of freedom in layout, stabilizing an
oil liquid surface and preventing air from being included
or preventing mixing of some foreign materials.
[Solving Means] There are provided a power assisting
cylinder 20 arranged between a steering shaft 14 and a
chassis frame 11; a control valve 21 operated by the
steering shaft to control the power assisting cylinder;
an oil pump 23 for pressurizing operating oil supplied to
the power assisting cylinder; and an oil tank 24 for
storing the operating oil, wherein the oil tank is of a
closed type and integrally arranged in the oil pump.
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 | 2009-09-21 |
Letter Sent | 2008-09-19 |
Grant by Issuance | 2005-04-05 |
Inactive: Cover page published | 2005-04-04 |
Inactive: Final fee received | 2005-01-19 |
Pre-grant | 2005-01-19 |
Notice of Allowance is Issued | 2005-01-06 |
Letter Sent | 2005-01-06 |
4 | 2005-01-06 |
Notice of Allowance is Issued | 2005-01-06 |
Inactive: Approved for allowance (AFA) | 2004-12-23 |
Amendment Received - Voluntary Amendment | 2004-10-07 |
Inactive: S.30(2) Rules - Examiner requisition | 2004-04-08 |
Inactive: First IPC assigned | 2004-03-12 |
Inactive: Cover page published | 2002-04-02 |
Application Published (Open to Public Inspection) | 2002-03-29 |
Letter Sent | 2001-12-13 |
Inactive: First IPC assigned | 2001-11-21 |
Inactive: Single transfer | 2001-11-09 |
Inactive: Courtesy letter - Evidence | 2001-10-02 |
Inactive: Filing certificate - RFE (English) | 2001-10-01 |
Application Received - Regular National | 2001-09-28 |
Request for Examination Requirements Determined Compliant | 2001-09-19 |
All Requirements for Examination Determined Compliant | 2001-09-19 |
There is no abandonment history.
The last payment was received on 2004-08-06
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
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 | 2001-09-19 | ||
Request for examination - standard | 2001-09-19 | ||
Registration of a document | 2001-11-09 | ||
MF (application, 2nd anniv.) - standard | 02 | 2003-09-19 | 2003-08-07 |
MF (application, 3rd anniv.) - standard | 03 | 2004-09-20 | 2004-08-06 |
Final fee - standard | 2005-01-19 | ||
MF (patent, 4th anniv.) - standard | 2005-09-19 | 2005-08-04 | |
MF (patent, 5th anniv.) - standard | 2006-09-19 | 2006-08-16 | |
MF (patent, 6th anniv.) - standard | 2007-09-19 | 2007-07-20 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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HONDA GIKEN KOGYO KABUSHIKI KAISHA |
HONDA GIKEN KOGYO KABUSHIKI KAISHA |
Past Owners on Record |
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BUNZO SEKI |
YOSUKE HASEGAWA |