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Expired Canadian patentCanada

Device for the acceleration of bodies, especially a mobile catapult for flying bodies

CA 1323019 C · Owner: Monkewitz, Martin · Inventors: Monkewitz, Martin

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

For acceleration of bodies along a track a traction, rope was wound onto a drum at the end of the track. During disengagement, the rope and the vicinity within range of the rotating rope were liable to suffer damage. The device according to the invention serves in particular for the catapult-launching of flying bodies. A winding drum driven by hydraulic motors is arranged below the point of maximum track velocity of the flying body and moves the latter along the longitudinal track until it reaches lift-off velocity. A flat traction ribbon connected to a carriage causes the winding drum to reverse its sense of rotation, so that the carriage is braked along a short stretch. The device can be …

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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 October 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 12, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 9, 1988
GrantedOctober 12, 1993
Term endedOctober 12, 2010
Patent numberCA 1323019 C
Classification (IPC)B64F1/06

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedDec 9, 1988Patent grantedOct 12, 1993Term endedOct 12, 2010

Sources & verification

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