"Under Penal Law 265.01, a gravity knife is defined as any knife that opens with “the force of gravity or the application of centrifugal force” and has a blade that locks into place by means of a “button, spring, lever, or other device.”
Courts have interpreted that to mean that any knife that can be opened with a “wrist flick” — a movement something like what a fan dancer might do — qualifies as a gravity knife. A long list of court cases have turned on exactly that question, which seems straightforward enough."
I think spring assisted folding knives do meet this definition, and the article also does mention many folding knives sold in the city also meet this definition
Courts have interpreted that to mean that any knife that can be opened with a “wrist flick” — a movement something like what a fan dancer might do — qualifies as a gravity knife. A long list of court cases have turned on exactly that question, which seems straightforward enough."
I think spring assisted folding knives do meet this definition, and the article also does mention many folding knives sold in the city also meet this definition