Kelt,
The way I see it is, unless it is an auto or similar(torsion assist)knife, then it is legal.
Pennsylvania - Pa. C.S.A. 18.908. Prohibited offensive
weapons. (a) Offense defined.--A person commits a
misdemeanor of the first degree if, except as authorized
by law, he makes, repairs, sells, or otherwise deals in,
uses, or possesses any offensive weapon. (b) Exception.--
It is a defense under this section for the defendant to
prove by a preponderance of evidence that he possessed of
dealt with the weapon solely as a curio or in a dramatic
performance, or that he possessed it briefly in
consequence of having found it or taken it from an
aggressor, or under circumstances similarly negativing any
intent or likelihood that the would be used unlawfully.
(c) Definition.--As used in this section "offensive
weapon" means... any... dagger, knife, razor or cutting
instrument, the blade of which is exposed in an automatic
way by switch, push-button, spring mechanism, or
otherwise...
- also see 24 P.S. 13-1317.2. re: students bringing weapons
on to school property.]
Pennsylvania case law:
Where opening knife required lock to be released, and
once lock was released blade could be exposed by flip of
wrist, knife did not have blade which could be "exposed in
an automatic way"... by "otherwise" legislature referred
to knives that were opened by some sort of mechanism which
is not a "switch," "push-button," or "spring" mechanism
but still a mechanism... (1979)
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Louis Buccellato
http://www.themartialway.com
Knives, Weapons and equipment. Best prices anywhere.
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"only the paranoid will survive"