Patent Number: 6,168,405

Title: Wankel type pump for transporting fluid with entrained particulate matter

Abstract: A quiet, inexpensive pump especially adapted for transporting fluid having particulate matter entrained therein comprises a one-piece housing having a chamber therein with an epitrochoidal planform satisfying the equation: x and y being plotted from a center of said chamber, wherein 0.ltoreq.t.ltoreq.2.pi., a/b is an integer defining the number of lobes of said chamber, and b/c=2. A stator gear at the center of the chamber has (a/b).multidot.n teeth, wherein n is an integer. A one-piece rotor, with a generally polygonal planform having a/b+1) curved sides, rotates eccentrically within the chamber. Apexes of said rotor are spaced from walls of said chamber to maintain a clearance between said apexes and said walls as said rotor rotates in said chamber, for permitting fluid flow through said clearance.

Inventors: Nosenchuck; Daniel M. (Mercerville, NJ)

Assignee: SounDesign, L.L.C.

International Classification: A47L 5/12 (20060101); A47L 5/16 (20060101); F04C 18/22 (20060101); F04C 2/00 (20060101); F04C 2/22 (20060101); A47L 005/12 (); F01C 001/00 ()

Expiration Date: 01/02/2018