Patent Yard Sign in
Expired Canadian patentCanada

Elastically restoring knee bolster for motor vehicle

CA 1297516 C · Owner: Hatfield, John N. · Inventors: Hatfield, John N.; Brantman, Russel

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

In an automobile a knee bolster is provided, with, either an airbag or shoulder belt for capturing and absorbing, the translational kinetic energy of the occupant's lower torso for prevention of submarining, and for controlled rebound. The bolster includes a member for capturing and dissipating a portion of the kinetic energy of an occupant during a collision, and a member for storing another portion of said kinetic energy. A collision between the lower portion of the body of the occupant and the bolster tends to restore the body in such a way that the rebound impact against the seat is applied to the occupant's back rather than his head or neck.

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 March 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 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.
FiledApril 10, 1987
GrantedMarch 17, 1992
Term endedMarch 17, 2009
Patent numberCA 1297516 C
Classification (IPC)B60R21/04 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedApril 10, 1987Patent grantedMarch 17, 1992Term endedMarch 17, 2009

Sources & verification

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