US 4,224,953 AGranted

Pipe

OwnerSocrates Alvarezinventor

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Abstract

A pipe to be used for smoking with a bowl, where the tobacco being smoked is burned, having three cavities or chambers defined therein. One of the chambers is a burning chamber wherein the tobacco to be smoked is burned, beneath the burning chamber is a screen, a control valve that varies the diameter of the passage between the burning chamber and a cooling chamber underneath this valve. A second screen separates the cooling chamber from a third chamber, called the filtering chamber. The filtering medium is the same substance being smoked and it is packed and held inside the filtering chamber with a third screen that is placed at the end of the filtering chamber. The third screen in turn is held in place when the bowl is connected to the stem. Finally, a mouthpiece is connected to the stem. The ends of the bowl piece may be interchanged, thereby providing two choices for the size of the burning chamber to be used depending on the amount of substance to be smoked.

Claims7

Dependent claims

A pipe for smoking comprising:

a. a cylindrical valve member, having means for varying its inner diameter, and having one cavity defined on each end of said valve member, one of these cavities being a female terminated burning cavity and the other cavity being a male terminated cooling cavity, wherein said burning cavity has a first step located relatively close to the end of said cylindrical valve member;
b. a first screen tightly fit on said first step inside said burning cavity;
c. a longitudinally hollow L-shaped filtering chamber having a female terminated opening on each end and each one of these openings having a step at enough distance away from each of said filtering chamber ends so as to provide the necessary space for being removably secured to said cooling cavity in said valve member;
d. a pair of screens tightly fit on the steps inside said L-shaped filtering chamber;
e. a mouthpiece capable of being removably secured to either said opening in said L-shaped filtering chamber that is not connected to said valve member or to said burning cavity, thereby providing a choice of sizes to the user.

2 more elements

Dependencies are inferred from the claim text.