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(12) Patent: | (11) CA 2344321 |
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(54) English Title: | METHOD OF FABRICATING A BACKWATER VALVE |
(54) French Title: | METHODE DE FABRICATION D'UN CLAPET ANTI-RETOUR |
Status: | Expired |
(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: | WOODRUFF, NATHAN V. |
(74) Associate agent: | |
(45) Issued: | 2010-04-13 |
(22) Filed Date: | 2001-04-18 |
(41) Open to Public Inspection: | 2002-10-18 |
Examination requested: | 2006-02-09 |
Availability of licence: | 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 method of fabricating a backwater valve. A first step involves providing a fitting having at least two flow openings with an inner diameter. A second step involves providing an annular body having a central passage and a valve member movable between a closed position blocking the central passage and an open position. The annular body has an outer diameter adapted for close fitting insertion within the inner diameter of a selected one of the at least two flow openings. A third step involves inserting the annular body into the selected one of the at least two flow openings and securing the annular body in place.
L'invention concerne une méthode de fabrication d'un clapet anti-retour. La première étape consiste à prévoir un raccord ayant au moins deux orifices d'écoulement avec un diamètre intérieur. La deuxième étape consiste à prévoir un corps annulaire ayant un passage central et un élément de soupape amovible entre une position fermée bloquant le passage central et une position centrale. Le corps annulaire a un diamètre extérieur adapté à une insertion ajustée dans le diamètre intérieur d'une parmi au moins deux orifices d'écoulement. La troisième étape consiste à insérer le corps annulaire dans un des orifices d'écoulement et à maintenir le corps annulaire en place.
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.
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 , Administrative Status , Maintenance Fee and Payment History should be consulted.
Title | Date |
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Forecasted Issue Date | 2010-04-13 |
(22) Filed | 2001-04-18 |
(41) Open to Public Inspection | 2002-10-18 |
Examination Requested | 2006-02-09 |
(45) Issued | 2010-04-13 |
Expired | 2021-04-19 |
There is no abandonment history.
Fee Type | Anniversary Year | Due Date | Amount Paid | Paid Date |
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Application Fee | $150.00 | 2001-04-18 | ||
Maintenance Fee - Application - New Act | 2 | 2003-04-22 | $50.00 | 2003-04-04 |
Maintenance Fee - Application - New Act | 3 | 2004-04-19 | $50.00 | 2004-01-20 |
Maintenance Fee - Application - New Act | 4 | 2005-04-18 | $50.00 | 2005-01-18 |
Maintenance Fee - Application - New Act | 5 | 2006-04-18 | $100.00 | 2006-01-12 |
Request for Examination | $400.00 | 2006-02-09 | ||
Maintenance Fee - Application - New Act | 6 | 2007-04-18 | $100.00 | 2007-04-04 |
Maintenance Fee - Application - New Act | 7 | 2008-04-18 | $100.00 | 2008-04-02 |
Maintenance Fee - Application - New Act | 8 | 2009-04-20 | $100.00 | 2009-02-24 |
Final Fee | $150.00 | 2010-01-13 | ||
Maintenance Fee - Application - New Act | 9 | 2010-04-19 | $100.00 | 2010-02-23 |
Maintenance Fee - Patent - New Act | 10 | 2011-04-18 | $125.00 | 2011-03-22 |
Maintenance Fee - Patent - New Act | 11 | 2012-04-18 | $125.00 | 2012-03-23 |
Maintenance Fee - Patent - New Act | 12 | 2013-04-18 | $125.00 | 2013-03-28 |
Maintenance Fee - Patent - New Act | 13 | 2014-04-22 | $125.00 | 2014-03-18 |
Maintenance Fee - Patent - New Act | 14 | 2015-04-20 | $125.00 | 2015-03-20 |
Maintenance Fee - Patent - New Act | 15 | 2016-04-18 | $225.00 | 2016-03-22 |
Maintenance Fee - Patent - New Act | 16 | 2017-04-18 | $225.00 | 2017-03-24 |
Maintenance Fee - Patent - New Act | 17 | 2018-04-18 | $225.00 | 2018-04-04 |
Maintenance Fee - Patent - New Act | 18 | 2019-04-18 | $225.00 | 2019-03-28 |
Maintenance Fee - Patent - New Act | 19 | 2020-04-20 | $225.00 | 2020-04-06 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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COSCARELLA, GABE |
Past Owners on Record |
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None |