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US4408675A Expired / Lapsed US ⏱️ 0.0 years remaining

Dual outlet engine exhaust system

Assignee: Motors Liquidation Co
•
Filing: 1981-05-22
•
Granted: 1983-10-11
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Expires: 2001-05-22
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Abstract

Abstract A dual outlet engine exhaust system having a pair of resonators which are joined as a rigid assembly by a resonator manifold which also maintains divided exhaust gas flow to the resonators.

Inventors

  • 👤 Robert C. Keller

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 13:29
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/04

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 202 words
In a dual outlet engine exhaust system for an internal combustion engine mounted in a vehicle, an exhaust pipe extending from the engine, a pair of branch pipes connected to said exhaust pipe and extending rearwardly longitudinally and centrally of the vehicle in substantially parallel relationship, a pair of resonators each having an inlet and an outlet, said resonators being arranged end-to-end at their inlet end and transverse of the vehicle, mounting means mounting the outlet end of each resonator on the vehicle, a tail pipe connected to each outlet, and resonator manifold means including a gas separator located directly between the inlet ends of said resonators for both rigidly mechanically interconnecting said resonators while separately gaseously directly connecting their inlets to the respective branch pipes whereby said resonators form a rigid assembly and together with said tail pipes are mounted directly on the vehicle by only said mounting means at the outlet ends of said resonators and whereby the exhaust gases are divided by said branch pipes with such divided exhaust gases thereafter maintained separate from each other by said gas separator while passing through said resonators and thence separately out through said tail pipes to create a distinct exhaust sound.
Claim 2
Dependent Claim 202 words
In a dual outlet engine exhaust system for an internal combustion engine mounted in a vehicle, an exhaust pipe extending from the engine, a pair of branch pipes connected to said exhaust pipe and extending rearwardly longitudinally and centrally of the vehicle in substantially parallel relationship, a pair of resonators each having an inlet and an outlet, said resonators being arranged end-to-end at their inlet end and transverse of the vehicle, mounting means mounting the outlet end of each resonator on the vehicle, a tail pipe connected to each outlet, and resonator manifold means including a gas separator located directly between the inlet ends of said resonators for both rigidly mechanically interconnecting said resonators while separately gaseously directly connecting their inlets to the respective branch pipes whereby said resonators form a rigid assembly and together with said tail pipes are mounted directly on the vehicle by only said mounting means at the outlet ends of said resonators and whereby the exhaust gases are divided by said branch pipes with such divided exhaust gases thereafter maintained separate from each other by said gas separator while passing through said resonators and thence separately out through said tail pipes to create a distinct exhaust sound.

References Cited (Backward Citations)

US1280386A Cited
US1708002A Cited
US2841348A Cited
US2940249A Cited
US3070187A Cited
US3189122A Cited
US3685615A Cited
DE2910370A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-10-10 1987-04-11 1987-10-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-10-10 1991-04-11 1991-10-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-10-10 1995-04-11 1995-10-11 $7700.00 Window Closed / Lapsed

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