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Expired Canadian patentCanada

Powder charge feed strip

CA 1238451 A · Owner: Pneutek, Inc. · Inventors: Haytayan, Harry M.

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

An improved cartridge-holding magazine is provided for powder-actuated fastener driving tools. The magazine is in the form of a flat strip having a series of cartridge-receiving holes and grooves surrounding the holes for receiving an end extension of a chamber-defining portion of a fastener driving tool so as to properly locate the cartridges in the chamber. The grooves define sleeve portions in the strip which cooperate with the surrounding surface of the side wall of the cartridge chamber to prevent the side wall of a cartridge casing from rupturing or fracturing, especially near the rim of the cartridge when, the cartridge is fired, with the result that after ignition the gases expand …

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.

Why it's free to use

  • Granted June 28, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 28, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 29, 1984
GrantedJune 28, 1988
Term endedJune 28, 2005
Patent numberCA 1238451 A
Classification (IPC)F42B39/08 +2 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedAug 29, 1984Patent grantedJune 28, 1988Term endedJune 28, 2005

Sources & verification

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