Patent · US Expired

Modular muffler for motor vehicles

US5371331A · kind A · utility

36Cited by
2References
2Claims
0Family size

Inventor

Key dates

Filing dateJun 25, 1993
Grant dateDec 6, 1994
Priority date—
Expiry dateJun 25, 2013

Classification

  • Technology area (CPC F)Mechanical Engineering; Lighting; Heating
  • CPC primaryF01N2470/24
  • WIPO fieldEnvironmental technology
  • WIPO sectorChemistry

Abstract

A muffler for use on the exhaust system of the motor vehicle. The muffler has a central pipe which is surrounded by an outer pipe which leaves an annular space between the two. The outer pipe is open at both ends and the annular space is filled with a sound deadening material. The central pipe has openings which pass to the annular space and a perforated sound deadening member is affixed to the inner surface of the central pipe. Preferably, the outer pipe is outwardly flared at its upstream end, and the perforated sound deadening member is conical in shape.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.