Patent Yard Sign in
Expired Canadian patentCanada

Imprinting machine

CA 1094877 A · Owner: Advanced Drainage Systems, Inc. · Inventors: Farrell, Bernard T.

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

A machine for imprinting indicia on thermoplastic corrugated tubing comprises a framework with structure connected thereto for guiding tubing along a predetermined path of travel. A motivator on the framework moves the tubing along its path of travel and an imprinting structure mounted, adjacent the path of travel of the tubing functions to selectively move into and out of engagement with the exterior surface of the tubing. The imprinting structure includes a print wheel with spaced apart teeth at the periphery thereof arranged to mesh with corrugated tubing when the imprinting structure is in engagement therewith. ConductiYe print type are releasably secured to the print wheel at the …

Read the whole patent

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 3, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 3, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 21, 1978
GrantedFebruary 3, 1981
Term endedFebruary 3, 1998
Patent numberCA 1094877 A
Classification (IPC)B44B5/00 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedDec 21, 1978Patent grantedFeb 3, 1981Term endedFeb 3, 1998

Sources & verification

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