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Expired Canadian patentCanada

Fluid filled elastomeric damping device

CA 1301787 C · Owner: Clevite Industries Inc. · Inventors: Coad, L. Dale

CIPO record

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

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Abstract From the Canadian patent

Abstract, A fluid filled engine mount for absorbing shock and dampening structural agitation is provided in which an elastomeric diaphragm and an associated air chamber cooperate with a fluid filled chamber to allow high frequency, low amplitude structural agitation to the mount to occur with very little pressure developing in the fluid chambers and, accordingly, a slight damping response. The fluid chambers are included within an elastomeric shear spring spacing a rigid outer housing including the diaphragm and air chamber from a rigid inner member. The housing and inner rigid member are typically associated with an engine frame and engine respectively. The diaphragm is restrained against …

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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 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 20, 1987
GrantedMay 26, 1992
Term endedMay 26, 2009
Patent numberCA 1301787 C
Classification (IPC)F16F13/00 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJuly 20, 1987Patent grantedMay 26, 1992Term endedMay 26, 2009

Sources & verification

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