Patent ID: 6745777
Filing Date: 2004-06-08
Classification: A24F

Abstract:
A tobacco filter means comprises: a sleeve member including a plurality of filter units, having filter material formed in each said filter unit for absorbing or adsorbing smoke waste materials, superimposedly rechargeably filled in a central hole formed through the sleeve member; each said filter unit formed with at least a lug on a perimeter of the filter unit, with the lug slidably engageable with at least a longitudinal groove longitudinally recessed in an inside wall of the sleeve member and parallel to a longitudinal axis of the sleeve member; having an outer end portion of the sleeve member adapted for filling tobacco therein or for inserting a cigarette therein; and having an inner end portion of the sleeve member adapted to be received into or sucked by a smoker's mouth; whereby upon smoking for a time period and when the filter unit loaded on an outer portion of the sleeve member is saturated or clogged by the smoke waste, a new filter unit is recharged into the sleeve member through the inner end portion of the sleeve member for thrusting the filter units forwardly to outwardly discard the filter unit as saturated or clogged through a front end portion of the sleeve member.