Requirements for cigarette lighters
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
(a) A lighter subject to this part 1210 shall be resistant to successful operation by at least 85 percent of the child-test panel when tested in the manner prescribed by § 1210.4.
(b) The mechanism or system of a lighter subject to this part 1210 that makes the product resist successful operation by children must:
(1) Reset itself automatically after each operation of the ignition mechanism of the lighter,
(2) Not impair safe operation of the lighter when used in a normal and convenient manner,
(3) Be effective for the reasonably expected life of the lighter, and
(4) Not be easily overriden or deactivated.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.