CCC sec 84(1) ---
prohibited weapon means
(a) a knife that has a blade that opens automatically by gravity or centrifugal force or by hand pressure applied to a button, spring or other device in or attached to the handle of the knife.
You have to figure it out from there. Maybe true or not, one Internet site claims "This part of the law has evolved into a test where police attempt to release the blade of a knife out of its handle with only one hand. If the knife's blade slides out, even slightly, the knife is considered to be a prohibited weapon."
https://legalbeagle.com/6659356-knife-laws-canada.htmlMaybe true or not, Wiki has a more friendly definition stating ... "Manually-opened or 'one-handed' opening knives, including spring-assisted knives, that do not fall within the categories listed as prohibited weapons definition are legal to own and use, however importation of many of these items has been banned by the CBSA."
CBSA web site has some details under sec 20 & 21 at this link.
https://www.cbsa-asfc.gc.ca/publication ... .html#a4x2I was trying to figure out if a spring assisted knife is prohibited. The CBSA interpretation seems to leave it a bit foggy. Probably best to just leave it in your pocket and shut up about it...lol.
CBSA
Note: Knives that have a "thumb stud" attached to the blade of the knife, that is independent of the handle (not protruding from the handle in the closed or folded position), and that open automatically by applying pressure to the thumb stud, do not generally meet the above definition of a prohibited weapon, and as such do not generally fall under TI 9898.00.00. However, if such a knife is found to also open by gravity or by the application of centrifugal force (as per (b) centrifugal knife below) alone, it may still be considered to be prohibited.
(b) Centrifugal knife (folding knife, butterfly knife, balisong knife) – A centrifugal knife is one that has a blade that opens automatically by centrifugal force when the blade is released from the handle into the fully ejected and locked position with a simple and brisk outwardly flick of the wrist; and it includes knives that require some preliminary or simultaneous minimal manipulation of either a flipper, thumb stud or other non-edged parts of the blade.
Centrifugal force may be defined as a force, arising from the body's inertia, which appears to act on a body moving in a circular path and is directed away from the centre around which the body is moving. That is, centrifugal force is established when the blade of the knife may be opened with a flick of the wrist.
https://www.cbsa-asfc.gc.ca/publication ... .html#a4x2