UWMitch,
Steven is correct. The law in Washington is vague regarding knife laws.
Always check for yourself. The RCW (Reformed Code of Washington) search engine can be found at
http://search.leg.wa.gov/pub/textsearch/default.asp?Cmd=Query
RCW 9.41.250 says:
"Dangerous weapons -- Penalty.
Every person who:
(1) Manufactures, sells, or disposes of or possesses any instrument or weapon of the kind usually known as slung shot, sand club, or metal knuckles, or spring blade knife, or any knife the blade of which is automatically released by a spring mechanism or other mechanical device, or any knife having a blade which opens, or falls, or is ejected into position by the force of gravity, or by an outward, downward, or centrifugal thrust or movement;
(2) Furtively carries with intent to conceal any dagger, dirk, pistol, or other dangerous weapon; or
(3) Uses any contrivance or device for suppressing the noise of any firearm,
is guilty of a gross misdemeanor punishable under chapter 9A.20 RCW.
[1994 sp.s. c 7 § 424; 1959 c 143 § 1; 1957 c 93 § 1; 1909 c 249 § 265; 1886 p 81 § 1; Code 1881 § 929; RRS § 2517.]"
RCW 9.94A.125 also mentions knife as it relates to being defined a deadly weapon:
"For purposes of this section, a deadly weapon is an implement or instrument which has the capacity to inflict death and from the manner in which it is used, is likely to produce or may easily and readily produce death. The following instruments are included in the term deadly weapon: Blackjack, sling shot, billy, sand club, sandbag, metal knuckles, any dirk, dagger, pistol, revolver, or any other firearm, any knife having a blade longer than three inches, any razor with an unguarded blade, any metal pipe or bar used or intended to be used as a club, any explosive, and any weapon containing poisonous or injurious gas."
If you search on 'knife' you will get several references. In Washington a knife used in a crime will add the deadly weapon charge if the blade is over 3". No where in the RCW does it define the maximum carry length. And if the Seattle Police gave you the 3.5" figure, you can probably guess that it changes city to city.
I remember you mentioning Kershaw Task's, which I wondered about as the statutes prohibit 'spring mechanisms'. But as the blade on the Task is not released by a button, but by the normal opening motion, it is legal.
Thanks for the piece on the 3.5" in Seattle. I wasn't aware of that. Any info on other cities around the state?
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E. Larson
Edmonds, WA