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(12) Patent Application: | (11) CA 2246996 |
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(54) English Title: | JOINING OF TUBE-FORMED EXPANSION BOLT |
(54) French Title: | ELEMENT POUR ANCRAGE FORME DE PIECES TUBULAIRES JOINTES |
Status: | Deemed Abandoned and Beyond the Period of Reinstatement - Pending Response to Notice of Disregarded Communication |
(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: | SMART & BIGGAR LP |
(74) Associate agent: | |
(45) Issued: | |
(86) PCT Filing Date: | 1997-01-21 |
(87) Open to Public Inspection: | 1997-08-28 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | Yes |
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(86) PCT Filing Number: | PCT/SE1997/000085 |
(87) International Publication Number: | SE1997000085 |
(85) National Entry: | 1998-08-20 |
(30) Application Priority Data: | ||||||
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Tube-formed rock bolt intended for expansion into contact with the wall in a
bore hole without stretching the periphery of the rock bolt. The rock bolt
comprises an elongated tube (12) with closed cross section. The tube is
provided with a longitudinal depressed part (13). End pieces (14, 24) are
secured to the ends of the tube. Rock bolts according to the invention can be
connected to arbitrary length through screwing them together. The end pieces
are provided with axial channels (15, 35) whose peripheries sealingly
cooperate through deformation of the material when the rock bolts are screwed
together. Through connecting one end (30) of the assembled rock bolt to a high
pressure pump (39) the entire assembled rock bolt can be expanded at the same
time.
L'invention concerne un élément pour ancrage dans la roche, formé de pièces tubulaires et capable de se dilater et de venir en contact avec la paroi d'un trou de forage, sans étirage de sa périphérie. Chaque pièce comprend un tube allongé (12) à section transversale fermée. Le tube a une partie longitudinale en creux (13). Des embouts (14, 24) sont fixés aux extrémités du tube. Les pièces selon l'invention peuvent être assemblées jusqu'à une longueur quelconque, en les vissant ensemble. Les embouts ont des canaux axiaux (15, 35) dont les périphéries coopèrent d'une manière étanche par déformation du matériau quand les pièces sont vissées ensemble. En reliant une extrémité (30) de l'élément d'ancrage à une pompe à haute pression (39), on peut provoquer la dilatation simultanée de tout l'élément.
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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Application Not Reinstated by Deadline | 2002-01-21 |
Time Limit for Reversal Expired | 2002-01-21 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2001-01-22 |
Inactive: First IPC assigned | 1998-11-12 |
Inactive: IPC assigned | 1998-11-12 |
Classification Modified | 1998-11-12 |
Inactive: Notice - National entry - No RFE | 1998-10-27 |
Application Received - PCT | 1998-10-23 |
Application Published (Open to Public Inspection) | 1997-08-28 |
Abandonment Date | Reason | Reinstatement Date |
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2001-01-22 |
The last payment was received on 1999-12-14
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
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web page to see all current fee amounts.
Fee Type | Anniversary Year | Due Date | Paid Date |
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Basic national fee - standard | 1998-08-20 | ||
Registration of a document | 1998-09-17 | ||
MF (application, 2nd anniv.) - standard | 02 | 1999-01-21 | 1998-12-15 |
MF (application, 3rd anniv.) - standard | 03 | 2000-01-21 | 1999-12-14 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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ATLAS COPCO ROCK DRILLS AB |
Past Owners on Record |
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BO OHLSON |
DANIEL KRZYSZTALOWICZ |