Patent Yard Sign in
Expired Canadian patentCanada

Streamlined production of electric motor armatures and stators

CA 1290144 C · Owner: Wheeler, Dale K. · Inventors: Wheeler, Dale K.

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

Two production lines for the manufacture of armatures or stators for electric motors are separated over at least part of their length by a common partition. The juxtaposed proximity of the two production lines allows operations on articles on both lines to be carried out simultaneously by equipment mounted on a common operating head. Shuttles are provided upstream and downstream of coil winding areas so that armature or stator bodies from one production line can be automatically diverted to a winder on the other production line and returned when wound. The height of the laminations is determined by picking a stack close to the maximum height permissible measuring this height and, if …

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 October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 21, 1987
GrantedOctober 8, 1991
Term endedOctober 8, 2008
Patent numberCA 1290144 C
Classification (IPC)H02K15/09

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMay 21, 1987Patent grantedOct 8, 1991Term endedOct 8, 2008

Sources & verification

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