US3923120A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust silencer
Assignee: Individual
•
Filing: 1975-02-18
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Granted: 1975-12-02
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Expires: 1995-02-18
Abstract
Abstract An exhaust silencer for gases has a hollow cylindrical body with a uniform bore. An inlet at one end of the body is adapted to receive an exhaust pipe. A cap is anchored across the other end of the body. A plurality of spaced rows of outlet holes are formed through the body, said holes inclined at an acute angle to the body axis. The holes of one row extend forwardly and outwardly and the holes of an adjacent row extend rearwardly and outwardly, said rows of holes alternating in direction and extending around the body.
Inventors
- 👤 Joseph M Jatcko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:42
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
122 words
An exhaust silencer for gases comprising a hollow elongated cylindrical body with a uniform bore; an inlet at one end of the body adapted to receive an exhaust pipe; a cap anchored at and across the other end of the body; a plurality of spaced rows of outlet holes formed through the body; said holes inclined at an acute angle to the body axis; the holes of one row extending forwardly and outwardly, and the holes of an adjacent rows extending rearwardly and outwardly; said rows of holes alternating in direction and extending around the body and substantially throughout its length, whereby exhaust gases passing said inlet move along the length of the body and escape through the rows of holes therein.
Claim 2
Dependent Claim
122 words
An exhaust silencer for gases comprising a hollow elongated cylindrical body with a uniform bore; an inlet at one end of the body adapted to receive an exhaust pipe; a cap anchored at and across the other end of the body; a plurality of spaced rows of outlet holes formed through the body; said holes inclined at an acute angle to the body axis; the holes of one row extending forwardly and outwardly, and the holes of an adjacent rows extending rearwardly and outwardly; said rows of holes alternating in direction and extending around the body and substantially throughout its length, whereby exhaust gases passing said inlet move along the length of the body and escape through the rows of holes therein.
Claim 3
Dependent Claim
33 words
In the exhaust silencer of claim 1, the diameter of the holes being such with respect to the body wall thickness and said inlet that no back pressure is developed within the body.
Claim 4
Dependent Claim
25 words
In the exhaust silencer of claim 1, the angle of said holes relative to said axis being in the range of 30* to 60* approximately.
Claim 5
Dependent Claim
15 words
In the exhaust silencer of claim 1, said holes extending at a 45* angle approximately.
Claim 6
Dependent Claim
19 words
In the exhaust silencer of claim 1, said holes having a diameter of approximately one-third of the wall thickness.
Claim 7
Dependent Claim
28 words
In the exhaust silencer of claim 1, said cap being frangible and fracturable upon a build up of pressure in said body due to clogging of the holes.
Claim 8
Dependent Claim
21 words
In the exhaust silencer of claim 1, the decibel level of exhaust noise being in the area of 60 decibels approximately.
Claim 9
Dependent Claim
19 words
In the exhaust silencer of claim 1, said inlet including an internally threaded pipe fitting secured into said body.
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) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |