Some of the information on this Web page has been provided by external sources. The Government of Canada is not responsible for the accuracy, reliability or currency of the information supplied by external sources. Users wishing to rely upon this information should consult directly with the source of the information. Content provided by external sources is not subject to official languages, privacy and accessibility requirements.
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 Application: | (11) CA 2371136 |
---|---|
(54) English Title: | TUBE-FORMED ROCK BOLT |
(54) French Title: | BOULON D'ANCRAGE TUBULAIRE |
Status: | Deemed Abandoned and Beyond the Period of Reinstatement - Pending Response to Notice of Disregarded Communication |
(51) International Patent Classification (IPC): |
|
---|---|
(72) Inventors : |
|
(73) Owners : |
|
(71) Applicants : |
|
(74) Agent: | SMART & BIGGAR LP |
(74) Associate agent: | |
(45) Issued: | |
(86) PCT Filing Date: | 2000-02-07 |
(87) Open to Public Inspection: | 2000-12-14 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | Yes |
---|---|
(86) PCT Filing Number: | PCT/SE2000/000229 |
(87) International Publication Number: | SE2000000229 |
(85) National Entry: | 2001-11-16 |
(30) Application Priority Data: | ||||||
---|---|---|---|---|---|---|
|
Tube-formed rock bolt with closed profile intended to be anchored in a bore
hole. The bolt is anchored in the bore hole through internal pressurisation
with a fluid, for instance water, so that its diameter is plastically expanded
into contact with the wall of the hole. The bolt has before its expansion a
cross-section whose peripheral length exceeds the circumference of the hole
but a largest diameter, which is smaller than that of the hole. In order to
obtain a profile being sufficiently flexible for expansion and at the same
time having a sufficiently large cross-sectional area for the strength the
tube has a varying wall thickness in a peripheral direction. This is achieved
by making the tube-formed bolt by means of extrusion of an aluminium-based
material.
L'invention concerne un boulon d'ancrage tubulaire doté d'un profil fermé destiné à être ancré dans un trou de forage. Le boulon est ancré dans le trou de forage par pressurisation interne par un fluide, par exemple, de l'eau de telle façon que son diamètre soit plastiquement élargi et qu'il vienne en contact avec la paroi du trou. Avant son expansion, le boulon a une section transversale dont la longueur périphérique excède la circonférence du trou mais son diamètre le plus large est inférieur à celui du trou. Ain d'obtenir un profil qui soit suffisamment flexible pour l'expansion tout en ayant une zone section transversale suffisamment large aux fins résistance, le tube a une paroi dont l'épaisseur varie dans la direction périphérique. A cet effet, le boulon tubulaire est réalisé par extrusion d'un matériau à base d'aluminium.
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.
For a clearer understanding of the status of the application/patent presented on this page, the site Disclaimer , as well as the definitions for Patent , Event History , Maintenance Fee and Payment History should be consulted.
Description | Date |
---|---|
Application Not Reinstated by Deadline | 2006-02-07 |
Inactive: Dead - RFE never made | 2006-02-07 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2006-02-07 |
Inactive: Abandon-RFE+Late fee unpaid-Correspondence sent | 2005-02-07 |
Letter Sent | 2002-06-04 |
Inactive: Correspondence - Transfer | 2002-05-30 |
Inactive: Cover page published | 2002-05-07 |
Inactive: Courtesy letter - Evidence | 2002-05-07 |
Inactive: Notice - National entry - No RFE | 2002-05-02 |
Application Received - PCT | 2002-03-07 |
Inactive: Single transfer | 2001-12-13 |
Application Published (Open to Public Inspection) | 2000-12-14 |
Abandonment Date | Reason | Reinstatement Date |
---|---|---|
2006-02-07 |
The last payment was received on 2005-01-06
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 |
---|---|---|---|
Basic national fee - standard | 2001-11-16 | ||
Registration of a document | 2001-12-13 | ||
MF (application, 2nd anniv.) - standard | 02 | 2002-02-07 | 2002-01-31 |
MF (application, 3rd anniv.) - standard | 03 | 2003-02-07 | 2003-01-06 |
MF (application, 4th anniv.) - standard | 04 | 2004-02-09 | 2004-01-08 |
MF (application, 5th anniv.) - standard | 05 | 2005-02-07 | 2005-01-06 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
---|
ATLAS COPCO ROCK DRILLS AB |
Past Owners on Record |
---|
THOMAS ARVIDSSON |