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Expired Canadian patentCanada

Retaining device for mounting electrical units

CA 1253952 A · Owner: Heinemann Electric Company · Inventors: Richter, Konrad J. Sr.

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 retaining device releasably mounts and retains an electrical unit, such as a circuit breaker within, a panel opening. A face plate on the unit overlaps the panel to stop the unit at the panel opening. The retaining device has at least one resilient retaining arm projecting from the unit having a cam surface for engaging an edge of the opening to depress the retaining arm from an original position as the unit is inserted until a retaining surface of the arm passes the edge of the opening and allows the retaining arm to move back toward its original position to hold the panel against the face plate. The retaining device includes a separate lock arm projecting from the unit having a latch …

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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 May 9, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 9, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 4, 1986
GrantedMay 9, 1989
Term endedMay 9, 2006
Patent numberCA 1253952 A
Classification (IPC)H02B1/04 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedApril 4, 1986Patent grantedMay 9, 1989Term endedMay 9, 2006

Sources & verification

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