Firearm, especially hand-held, with recoil attenuation
CA 2136594 C · Owner: Heckler & Koch Gmbh · Inventors: Albrecht, Hermann; Weldle, Helmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordNo Claude kit for weapons
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Abstract From the Canadian patent
A firearm, especially hand-held. A barrel assembly (2 18, 36, & 54) travels back and forth essentially in or opposite the direction the weapon is fired in between a forward and a rear stop, (44, 48, & 50) on or in a frame or grip assembly (12). A breech assembly (6 & 32) that travels back and forth essentially in the same direction as the barrel assembly between a forward and closed position and a rear and open position, traveling out of the closed position and into the open position against the force of a closure spring (16) and at the end of its , return, stroke, the frame or grip assembly or a component (64 or 64') resting off it. A buffering spring (66) tensions the barrel assembly …
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
- Filed November 24, 1994 and granted July 4, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 24, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.