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 2019897 |
---|---|
(54) English Title: | TIGHTENER |
(54) French Title: | TENDEUR |
Status: | Deemed expired |
(52) Canadian Patent Classification (CPC): |
|
---|---|
(51) International Patent Classification (IPC): |
|
(72) Inventors : |
|
(73) Owners : |
|
(71) Applicants : |
|
(74) Agent: | SMART & BIGGAR |
(74) Associate agent: | |
(45) Issued: | 1996-02-06 |
(22) Filed Date: | 1990-06-26 |
(41) Open to Public Inspection: | 1991-12-26 |
Examination requested: | 1991-01-18 |
Availability of licence: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
---|
(30) Application Priority Data: | None |
---|
The tightener comprises a scissor clamp having first
and second arms pivotally connected at their upper ends. At
their lower ends, the arms are pivotally connected with the ends
of a loop of chain that encircles a pair of semi-circular steel
shells encircling a pipeline. The rod of a cylinder is pivotally
connected to move the front arm toward the rear arm. The
cylinder is positioned to operate generally perpendicularly
relative to the arms.
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 |
---|---|
Forecasted Issue Date | 1996-02-06 |
(22) Filed | 1990-06-26 |
Examination Requested | 1991-01-18 |
(41) Open to Public Inspection | 1991-12-26 |
(45) Issued | 1996-02-06 |
Deemed Expired | 2005-06-27 |
There is no abandonment history.
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
---|
ENBRIDGE PIPELINES INC./PIPELINES ENBRIDGE INC. |
Past Owners on Record |
---|
INTERHOME ENERGY INC. |
INTERPROVINCIAL PIPE LINE COMPANY A DIVISION OF INTERHOME ENERGY |
INTERPROVINCIAL PIPE LINE INC. |
INTERPROVINCIAL PIPE LINE LIMITED |
SAVARD, DONALD D. |