Patent US3739401A successfully refreshed from Google Patents.
Patent US4325459A successfully refreshed from Google Patents.
US4325459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler diffuser
Assignee: Individual
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Filing: 1980-09-29
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Granted: 1982-04-20
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Expires: 2000-09-29
Abstract
Abstract An improved muffler diffuser adapted to be used with a muffler having a diffuser element mountable within the muffler adjacent the inlet end, with the diffuser element having a body portion mountable with the muffler and a diffuser portion disposed within the muffler being of a substantially truncated, conic configuration, with the diffuser portion extending downstream towards the exit end of the muffler and having a plurality of openings formed therein for directing the noisy, gaseous exhaust into the muffler to effectuate a reduction in noise and back pressure.
Inventors
- 👤 Mack M. Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:11
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/08; F01N1/10; F01N1/24
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
236 words
A muffler diffuser adapted to be used with a muffler having an inlet end for receiving a noisy, gaseous exhaust comprising: a diffuser element mountable within the muffler adjacent the inlet end; said diffuser element having a body portion and a diffuser portion; said body portion being substantially of a tubular configuration and adapted to be longitudinally mounted and aligned with the longitudinal axis of the muffler; said diffuser portion being of a substantially truncated conical configuration and adapted to be longitudinally aligned with the longitudinal axis of said body portion, with the greatest diameter of said diffuser portion adjacent the inlet end of the muffler and the smallest diameter of said diffuser portion extending downstream towards the exit end of the muffler; said diffuser portion formed having a plurality of openings for directing the noisy, gaseous exhaust into the muffler; a baffle body member mountable within the muffler, said baffle body member having a substantially tubular body member and adapted to be aligned with the longitudinal axis of the muffler; said baffle body member having a plurality of louvers circumferentially disposed along the length of said baffle body member; said louvers extending inwardly into the bore of said baffle body member towards the inlet end of the muffler so as to divert the noisy, gaseous exhaust to enhance noise diffusion; and, said diffuser portion is mounted within said baffle body member in longitudinal alignment therewith.
Claim 2
Dependent Claim
236 words
A muffler diffuser adapted to be used with a muffler having an inlet end for receiving a noisy, gaseous exhaust comprising: a diffuser element mountable within the muffler adjacent the inlet end; said diffuser element having a body portion and a diffuser portion; said body portion being substantially of a tubular configuration and adapted to be longitudinally mounted and aligned with the longitudinal axis of the muffler; said diffuser portion being of a substantially truncated conical configuration and adapted to be longitudinally aligned with the longitudinal axis of said body portion, with the greatest diameter of said diffuser portion adjacent the inlet end of the muffler and the smallest diameter of said diffuser portion extending downstream towards the exit end of the muffler; said diffuser portion formed having a plurality of openings for directing the noisy, gaseous exhaust into the muffler; a baffle body member mountable within the muffler, said baffle body member having a substantially tubular body member and adapted to be aligned with the longitudinal axis of the muffler; said baffle body member having a plurality of louvers circumferentially disposed along the length of said baffle body member; said louvers extending inwardly into the bore of said baffle body member towards the inlet end of the muffler so as to divert the noisy, gaseous exhaust to enhance noise diffusion; and, said diffuser portion is mounted within said baffle body member in longitudinal alignment therewith.
Claim 3
Dependent Claim
24 words
The muffler diffuser of claim 1, wherein: said diffuser portion includes a central opening for reducing back pressure caused by the noisy, gaseous exhaust.
Claim 4
Dependent Claim
17 words
The muffler diffuser of claim 1, wherein: said openings are radially disposed equidistance about said diffuser portion.
Claim 5
Dependent Claim
17 words
The muffler diffuser of claim 3, wherein: said diffuser portion is formed having eight of said openings.
Claim 6
Dependent Claim
28 words
The muffler diffuser of claim 1, wherein: said baffle body member is formed having a plurality of slots formed substantially perpendicular to the longitudinal axis of said baffle.
Claim 7
Dependent Claim
36 words
The muffler diffuser of claim 1, wherein: said baffle body member is formed having six of said louvers at substantially each radial cross section along the length of said baffle body member for enhanced noise reduction.
Claim 8
Dependent Claim
35 words
The muffler diffuser of claim 6, further including: insulation means for absorbing noise from the noisy, gaseous exhaust, said insulation means with the muffler and wrapped about said baffle body member for enhanced noise reduction.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-19 | 1985-10-19 | 1986-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-19 | 1989-10-19 | 1990-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-19 | 1993-10-19 | 1994-04-20 | $7700.00 | Window Closed / Lapsed |