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Expired Canadian patentCanada

Single and multiple section pipe repair clamps

CA 1161770 A · Owner: Mueller Co. · Inventors: Daghe, Joseph L.; Hauffe, William L.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A low profile clamp for use in encircling a pipe such as a main or the like, the clamp being either a repair clamp or a service clamp with a side outlet. The pipe clamp comprises a flexible band usually of sheet metal with a gasket material on the interior and having at least a pair of opposed looped ends which receive cylindrical trunnion loading bars. At least one bolt extending through the loading is arranged to move the trunnion loading bars toward each other to cause the looped ends of the band to draw the flexible band tightly around the pipe. The relationship of the trunnion loading bars to the bolt extending therethrough is such as to give the clamp a use for a wide range of varying …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted February 7, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 7, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 24, 1981
GrantedFebruary 7, 1984
Term endedFebruary 7, 2001
Patent numberCA 1161770 A
Classification (IPC)F16L33/04 +1 more

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedJuly 24, 1981Patent grantedFeb 7, 1984Term endedFeb 7, 2001

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.