US4126421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic converter vessel
Assignee: Toyota Motor Corp
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Filing: 1977-03-09
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Granted: 1978-11-21
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Expires: 1997-03-09
Abstract
Abstract Catalytic converter vessel consisting of outer casing 1, inner casing 2 and plates 6, one of said inner casing 2 and said plates being provided with louver holes 4 and the other with punched holes 5, and said inner casing 2 and said plates 6 being assembled together with outer case 1 so that said louver holes 4 are coaxially aligned with said punched holes 5.
Inventors
- 👤 Nobutaka Morikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:58
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2839; F01N3/2846; F01N2330/00; F01N2330/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
102 words
A catalyic converter vessel comprising an outer casing, an inner casing within the outer casing, said inner casing comprising a first wall and a second different wall closely adjacent to and extending along said first wall, one of said walls having a plurality of louver openings formed therein, each such louver opening having a major axis greater than its minor axis, the other of said walls having a plurality of punched holes therein of a diameter larger than the minor axis, and smaller than the major axis of the louver openings, said punched holes being centered on and adjacent said louver openings.
Claim 2
Dependent Claim
102 words
A catalyic converter vessel comprising an outer casing, an inner casing within the outer casing, said inner casing comprising a first wall and a second different wall closely adjacent to and extending along said first wall, one of said walls having a plurality of louver openings formed therein, each such louver opening having a major axis greater than its minor axis, the other of said walls having a plurality of punched holes therein of a diameter larger than the minor axis, and smaller than the major axis of the louver openings, said punched holes being centered on and adjacent said louver openings.
Claim 3
Dependent Claim
45 words
A catalytic converter vessel as claimed in claim 1, in which said first wall has said louver openings and comprises a wall of said inner casing, and said second wall has said punched holes and comprises a plate on the inside of said first wall.
Claim 4
Dependent Claim
45 words
A catalytic converter vessel as claimed in claim 1, in which said first wall has said punched openings and comprises a wall of the inner casing, and said second wall has said louver openings and comprises a plate on the outside of said first wall.
Claim 5
Dependent Claim
35 words
A catalytic converter vessel as claimed in claim 1 wherein said first wall comprises a wall of said inner casing, and said second wall comprises a plate seated on said wall of said inner casing.
Claim 6
Dependent Claim
23 words
A catalytic converter vessel as claimed in claim 4 in which said wall of said inner casing and said plate are welded together.
Claim 7
Dependent Claim
28 words
A catalytic converter vessel as claimed in claim 4 in which said wall of said inner casing and said plate are assembled together by a center stay bolt.
Claim 8
Dependent Claim
141 words
A catalytic converter vessel comprising an outer casing, an inner casing within the outer casing and having a wall, a plate on the wall of the inner casing and forming a second wall, one of said walls being an inner wall, and the other of said walls being an outer wall, said outer wall having a plurality of louver openings, said inner wall having a plurality of punched holes, said louver openings each being elongated and having a major axis greater than a minor axis, and said holes each having portions thereof in overlapping relation to said louver openings, said overlapping portions each having a dimension greater than the minor axis of a louver opening, but less than the major axis of a louver opening, so that ends of said louver openings are shielded by the wall with the punched openings.
Claim 9
Dependent Claim
141 words
A catalytic converter vessel comprising an outer casing, an inner casing within the outer casing and having a wall, a plate on the wall of the inner casing and forming a second wall, one of said walls being an inner wall, and the other of said walls being an outer wall, said outer wall having a plurality of louver openings, said inner wall having a plurality of punched holes, said louver openings each being elongated and having a major axis greater than a minor axis, and said holes each having portions thereof in overlapping relation to said louver openings, said overlapping portions each having a dimension greater than the minor axis of a louver opening, but less than the major axis of a louver opening, so that ends of said louver openings are shielded by the wall with the punched openings.
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) | 1981-11-20 | 1982-05-22 | 1982-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-20 | 1986-05-22 | 1986-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-20 | 1990-05-22 | 1990-11-21 | $7700.00 | Window Closed / Lapsed |