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(12) Patent: | (11) CA 3006852 |
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(54) English Title: | DOUBLE-PISTON-EFFECT VALVE |
(54) French Title: | SOUPAPE A DOUBLE EFFET DE PISTON |
Status: | Granted and Issued |
(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: | OYEN WIGGS GREEN & MUTALA LLP |
(74) Associate agent: | |
(45) Issued: | 2018-10-16 |
(22) Filed Date: | 2018-05-30 |
(41) Open to Public Inspection: | 2018-08-15 |
Examination requested: | 2018-05-30 |
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: | None |
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A double-piston-effect valve includes two valve seats symmetrically arranged in two valve endcaps at two sides, respectively. A piston ring is arranged on a rear of each of the valve seats, an inner O-ring groove is provided in the piston ring along an inner circumferential direction, an outer O-ring groove is arranged in the piston ring along an outer circumferential direction, an O-ring is fitted in each of the inner O-ring groove and the outer O-ring groove, and two semi-circular notches are symmetrically provided in a protruding portion of the piston ring.
Une soupape à double effet de piston comprend deux sièges de soupape arrangés symétriquement dans deux capuchons dextrémité de soupape aux deux côtés, respectivement. Une bague de piston est disposée sur un arrière de chacun des sièges de soupape, une rainure de joint torique extérieure est présente sur la bague de piston le long dune direction circonférentielle interne, une rainure de joint torique extérieure est disposée sur la bague de piston le long dune direction circonférentielle extérieure, un joint torique est posé sur chacune de la rainure de joint torique intérieure et la rainure de joint torique extérieure, et deux encoches semi-circulaires sont symétriquement présentes dans une portion en saillie de la bague de piston.
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.
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Description | Date |
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Letter Sent | 2021-05-03 |
Inactive: Single transfer | 2021-04-21 |
Common Representative Appointed | 2019-10-30 |
Common Representative Appointed | 2019-10-30 |
Grant by Issuance | 2018-10-16 |
Inactive: Cover page published | 2018-10-15 |
Pre-grant | 2018-08-30 |
Inactive: Final fee received | 2018-08-30 |
Letter Sent | 2018-08-20 |
4 | 2018-08-20 |
Notice of Allowance is Issued | 2018-08-20 |
Notice of Allowance is Issued | 2018-08-20 |
Inactive: Approved for allowance (AFA) | 2018-08-17 |
Inactive: Q2 passed | 2018-08-17 |
Advanced Examination Determined Compliant - paragraph 84(1)(a) of the Patent Rules | 2018-08-15 |
Application Published (Open to Public Inspection) | 2018-08-15 |
Letter sent | 2018-08-15 |
Inactive: Cover page published | 2018-08-14 |
Inactive: Office letter | 2018-06-20 |
Inactive: First IPC assigned | 2018-06-19 |
Inactive: IPC assigned | 2018-06-19 |
Inactive: IPC assigned | 2018-06-19 |
Inactive: Filing certificate - RFE (bilingual) | 2018-06-08 |
Letter Sent | 2018-06-07 |
Letter Sent | 2018-06-07 |
Application Received - Regular National | 2018-06-05 |
Inactive: Advanced examination (SO) | 2018-05-30 |
Request for Examination Requirements Determined Compliant | 2018-05-30 |
Inactive: Advanced examination (SO) fee processed | 2018-05-30 |
Early Laid Open Requested | 2018-05-30 |
All Requirements for Examination Determined Compliant | 2018-05-30 |
There is no abandonment history.
Fee Type | Anniversary Year | Due Date | Paid Date |
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Application fee - standard | 2018-05-30 | ||
Advanced Examination | 2018-05-30 | ||
Request for examination - standard | 2018-05-30 | ||
Registration of a document | 2018-05-30 | ||
Final fee - standard | 2018-08-30 | ||
MF (patent, 2nd anniv.) - standard | 2020-06-01 | 2020-05-08 | |
MF (patent, 3rd anniv.) - standard | 2021-05-31 | 2021-02-01 | |
Registration of a document | 2021-04-21 | ||
MF (patent, 6th anniv.) - standard | 2024-05-30 | 2022-02-24 | |
MF (patent, 8th anniv.) - standard | 2026-06-01 | 2022-02-24 | |
MF (patent, 4th anniv.) - standard | 2022-05-30 | 2022-02-24 | |
MF (patent, 5th anniv.) - standard | 2023-05-30 | 2022-02-24 | |
MF (patent, 7th anniv.) - standard | 2025-05-30 | 2022-02-24 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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FORTUNE MFG. CO., LTD. |
Past Owners on Record |
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JEROME CHIN LUNG CHEN |
MICHAEL QIANG LI |