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: | (11) CA 2405903 |
---|---|
(54) English Title: | STUFFING BOX FOR A VALVE |
(54) French Title: | PRESSE-ETOUPE POUR UNE SOUPAPE |
Status: | Expired and beyond the Period of Reversal |
(51) International Patent Classification (IPC): |
|
---|---|
(72) Inventors : |
|
(73) Owners : |
|
(71) Applicants : |
|
(74) Agent: | NORTON ROSE FULBRIGHT CANADA LLP/S.E.N.C.R.L., S.R.L. |
(74) Associate agent: | |
(45) Issued: | 2007-10-09 |
(86) PCT Filing Date: | 2001-04-06 |
(87) Open to Public Inspection: | 2002-10-10 |
Examination requested: | 2003-12-22 |
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/EP2001/003963 |
(87) International Publication Number: | WO 2001079735 |
(85) National Entry: | 2002-10-10 |
(30) Application Priority Data: | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
The invention relates to
a valve that contains a piston (2) linked
with the valve body (8) and received in
a housing (4), and a stuffing box (14)
interposed between the piston (2) and the
housing (4). The stuffing boxes of valves
used for media having a high melting point
and being operated close to the melting
point risk being damaged by so-called
freezing medium due to the adhesive
properties of the medium in temperature
ranges below the melting point. The aim
of the invention is therefore to improve
such a valve with few constructive efforts
in such a manner that the material of the
stuffing box reliably works in the liquid
range of the medium. To this end, the
housing (4) is provided with a heating
device (16) in the area of the stuffing box
(14). The axial length of said heating
device is larger than the axial length of
the stuffing box (14), and the heating
device (16) axially protrudes beyond an
axial end (22) of the stuffing box (14) by
a predetermined length (24, 28).
L'invention concerne une soupape contenant un piston (2) relié à un corps de soupape (8) et logé dans une enveloppe (4), ainsi qu'un presse-étoupe (14) situé entre le piston (2) et l'enveloppe (4). Dans les soupapes destinées à un milieu présentant un point de fusion élevé et lorsqu'on opère à proximité du point de fusion, il existe un risque d'endommagement du presse-étoupe par le milieu qui </= gèle >/= , en raison des propriétés adhésives du milieu dans des plages de températures inférieures au moins de fusion. L'invention vise donc à développer la soupape tout en maintenant une dépense de conception faible afin que le matériau du presse-étoupe opère de manière sûre dans la plage liquide du milieu. A cet effet, l'enveloppe (4) comprend, dans la zone du presse-étoupe (14), un dispositif de chauffage (16) dont la longueur axiale est supérieure à la longueur axiale du presse-étoupe (14) et qui dépasse axialement au moins une extrémité axiale (22) du presse-étoupe (14) sur une longueur prédéfinie (24, 28).
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 |
---|---|
Time Limit for Reversal Expired | 2014-04-08 |
Letter Sent | 2013-04-08 |
Grant by Issuance | 2007-10-09 |
Inactive: Cover page published | 2007-10-08 |
Inactive: Final fee received | 2007-07-25 |
Pre-grant | 2007-07-25 |
Notice of Allowance is Issued | 2007-05-03 |
Letter Sent | 2007-05-03 |
Notice of Allowance is Issued | 2007-05-03 |
Inactive: Approved for allowance (AFA) | 2007-04-05 |
Amendment Received - Voluntary Amendment | 2006-10-20 |
Inactive: S.30(2) Rules - Examiner requisition | 2006-04-21 |
Inactive: IPC from MCD | 2006-03-12 |
Amendment Received - Voluntary Amendment | 2004-07-08 |
Letter Sent | 2004-01-26 |
Request for Examination Requirements Determined Compliant | 2003-12-22 |
All Requirements for Examination Determined Compliant | 2003-12-22 |
Amendment Received - Voluntary Amendment | 2003-12-22 |
Request for Examination Received | 2003-12-22 |
Letter Sent | 2003-07-09 |
Inactive: Single transfer | 2003-05-26 |
Inactive: Cover page published | 2003-01-29 |
Inactive: Courtesy letter - Evidence | 2003-01-28 |
Inactive: Notice - National entry - No RFE | 2003-01-27 |
Application Received - PCT | 2002-11-13 |
Application Published (Open to Public Inspection) | 2002-10-10 |
National Entry Requirements Determined Compliant | 2002-10-10 |
There is no abandonment history.
The last payment was received on 2007-04-02
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
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 | 2002-10-10 | ||
MF (application, 2nd anniv.) - standard | 02 | 2003-04-07 | 2003-03-06 |
Registration of a document | 2003-05-26 | ||
Request for examination - standard | 2003-12-22 | ||
MF (application, 3rd anniv.) - standard | 03 | 2004-04-06 | 2004-03-11 |
MF (application, 4th anniv.) - standard | 04 | 2005-04-06 | 2005-03-16 |
MF (application, 5th anniv.) - standard | 05 | 2006-04-06 | 2006-04-06 |
MF (application, 6th anniv.) - standard | 06 | 2007-04-10 | 2007-04-02 |
Final fee - standard | 2007-07-25 | ||
MF (patent, 7th anniv.) - standard | 2008-04-07 | 2008-03-25 | |
MF (patent, 8th anniv.) - standard | 2009-04-06 | 2009-03-23 | |
MF (patent, 9th anniv.) - standard | 2010-04-06 | 2010-03-24 | |
MF (patent, 10th anniv.) - standard | 2011-04-06 | 2011-03-24 | |
MF (patent, 11th anniv.) - standard | 2012-04-10 | 2012-03-26 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
---|
XOMOX INTERNATIONAL GMBH & CO. |
Past Owners on Record |
---|
WOLFGANG GONSIOR |