(under subclass 429) Inventions directed to modifications of the stem structure or to patches or reinforcement of the tire. These are intended to effect a better union of the tire and stem.
(1) Note. For other reinforced inner tubes, see this class, subclasses 511 and 512.
(2) Note. For tire patches in general, see this class, subclasses 367+.
(3) Note. For valve casings, per se, see Class 138, Pipes and Tubular Conduits, subclasses 100-178, especially subclass 177 for valve casings, per se.
