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Expired Canadian patentCanada

Hydraulic-elastomeric mount

CA 1250824 A · Owner: General Motors Corporation · Inventors: Miller, John W.; Kingsley, Charles A.; Peterson, Linn A.

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

Abstract of the Disclosure A hydraulic-elastomeric vehicle engine mount basically comprising a pair of rigid mounting members a hollow elastomeric body connecting the members an, elastomeric diaphragm cooperating with the body to form a closed cavity that is filled with a liquid a parti-, tion dividing the cavity into a chamber enclosed by the body and a chamber enclosed by the diaphragm a damping, orifice connecting the chambers so as to provide hydraulic damping as one mounting member is forced to vibrate relative to the other in opposite directions and a damping decoupler mounted for limited movement on the partition so as to effect cyclic volume change in the chambers and thereby permit …

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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 March 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 7, 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.
FiledNovember 1, 1985
GrantedMarch 7, 1989
Term endedMarch 7, 2006
Patent numberCA 1250824 A
Classification (IPC)F16M1/00 +1 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedNov 1, 1985Patent grantedMarch 7, 1989Term endedMarch 7, 2006

Sources & verification

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