Patent ID: 8534295

Claim:
A smoking pipe, comprising: a first tubular member comprising a mouthpiece and a first circular cylinder having straight sides along the entirety of its length, said first tubular member surrounding a bore extending entirely through said mouthpiece and said first circular cylinder; a second tubular member comprising a second circular cylinder having straight walls along the entirety of its length that define a substance chamber within the interior of said second circular cylinder, the proximal end of said second tubular member being permanently coupled with the distal end of said first tubular member; and at least one filter member coupled with the interior of said second tubular member adjacent to the distal end of said first tubular member; wherein said bore has a uniform diameter along its length from said mouthpiece through the majority of said first circular cylinder and has progressively larger diameters near the distal end of said first tubular member, and wherein the portions of said bore that have larger diameters than the uniform diameter form a smoke chamber.