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Expired Canadian patentCanada

Apparatus for making electrical connections in a dynamoelectric machine

CA 2000285 C · Owner: Ottersbach, Thomas V. · Inventors: Hildebrandt, Eugene F.; Ottersbach, Thomas V.

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 dynamoelectric machine includes a stator assembly having one or more sets of electrical windings. Apparatus for electrically interconnecting external electrical leads a thermal, protector and ends of each set of windings includes a protector block for commonly connecting one end of at least one winding set with the thermal protector. The thermal protector is housed in the protector block. A terminal block interlocks with the protector block to hold the thermal protector in place. An electrically conductive arm of the thermal protector extends through the terminal block to effect connection of the thermal protector with an external lead. The terminal block also provides for connection of …

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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

  • Filed October 6, 1989 and granted August 24, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 6, 2009.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 6, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 6, 1989
GrantedAugust 24, 1993
Term endedOctober 6, 2009
Patent numberCA 2000285 C
Classification (IPC)H02K13/00 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedOct 6, 1989Patent grantedAug 24, 1993Term endedOct 6, 2009

Sources & verification

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