US4829944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intake manifold and process for producing same
Assignee: Resonac Holdings Corp
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Filing: 1987-06-23
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Granted: 1989-05-16
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Expires: 2007-06-23
Abstract
Abstract An intake manifold comprising a main pipe made of wrought aluminum material and having an open end, a closed end opposite to the open end, a plurality of holes formed in its peripheral wall and outward tubular projections integral with the peripheral wall and each formed around each of the holes, and a plurality of branch pipes made of wrought aluminum material and each having one end fitting in and joined to each of the tubular projections. The manifold is smooth-surfaced in its interior, diminished in resistance to air and improved in air intake efficiency. The manifold requires no finishing procedure unlike those prepared by casting.
Inventors
- 👤 Minobu Sukimoto
- 👤 Katsumi Yamazaki
- 👤 Naohisa Hirunuma
- 👤 Seijiro Taguchi
- 👤 Tadashi Usui
- 👤 Yasushi Akiyoshi
- 👤 Toyoichiro Nogami
- 👤 Toyoji Kaneko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:32
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/10; F02M35/104; F02M35/112; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F02M35/10006; F02M35/10026; F02M35/10052; F02M35/10072; F02M35/10091; F02M35/10111; F02M35/10144; F02M35/10314; F02M35/10327; F02M35/1034; F02M35/10347; F02M35/10354; F02M35/1036; F02B1/00; F02B1/02; F02B1/04; F05; F05C; F05C2225/00; F05C2225/08; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49398
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
80 words
An intake manifold comprising a tubular main pipe made of a wrought aluminum material and having an open end, a closed end opposite to the open end, a plurality of holes formed in its peripheral wall and outward tubular projections integral with the peripheral wall and each formed around each of the hole,, and a plurality of branch pipes made of a wrought aluminum material and each having one end fitting in and joined to each of the tubular projections.
Claim 2
Dependent Claim
80 words
An intake manifold comprising a tubular main pipe made of a wrought aluminum material and having an open end, a closed end opposite to the open end, a plurality of holes formed in its peripheral wall and outward tubular projections integral with the peripheral wall and each formed around each of the hole,, and a plurality of branch pipes made of a wrought aluminum material and each having one end fitting in and joined to each of the tubular projections.
Claim 3
Dependent Claim
26 words
An intake manifold as defined in claim 1 wherein the main pipe and the branch pipes are made of an aluminum material of AA6000 l series.
Claim 4
Dependent Claim
20 words
An intake manifold as defined in claim 1 wherein the main pipe is an aluminum pipe produced by impact extrusion.
Claim 5
Dependent Claim
27 words
An intake manifold as defined in claim 1 wherein the closed end of the main pipe is closed with a wall having a concave spherical inner surface.
Claim 6
Dependent Claim
18 words
An intake manifold as defined in claim 1 wherein the branch pipes are aluminum pipes produced by extrusion.
Claim 7
Dependent Claim
28 words
An intake manifold as defined in claim 1 wherein each of the branch pipes has its one end joined to the tubular projection by brazing as fitted therein.
Claim 8
Dependent Claim
72 words
An intake manifold as defined in claim 1 wherein each of the tubular projections is prepared by bulging the peripheral wall of a main pipe blank at the portion thereof to be connected to the branch pipe to form a tubular protrusion having a closed end, forming a hole in the end closing wall of the protrusion except at its peripheral edge portion and outwardly bending the remaining peripheral portion by burring.
Claim 9
Dependent Claim
52 words
An intake manifold as defined in claim 1 wherein each of the tubular projections is prepared by forming a hole in the peripheral wall of a main pipe blank at the portion thereof to be connected to the branch pipe and outwardly bending the hole defining portion of the wall by burring.
Claim 10
Dependent Claim
111 words
An intake manifold comprising: a main pipe made of a tubular wrought aluminum material and having an open end, a closed end opposite to the open end, a plurality of holes formed in its peripheral wall and outward tubular projections integral with the peripheral wall and each formed around each of the holes; a plurality of branch pipes made of a wrought aluminum material and each having one end fitting in and joined to each of the tubular projections, and a cast aluminum member having a bore extending therethrough and fixed to the open end of the main pipe with said open end of said main pipe inserted in the bore.
Claim 11
Dependent Claim
111 words
An intake manifold comprising: a main pipe made of a tubular wrought aluminum material and having an open end, a closed end opposite to the open end, a plurality of holes formed in its peripheral wall and outward tubular projections integral with the peripheral wall and each formed around each of the holes; a plurality of branch pipes made of a wrought aluminum material and each having one end fitting in and joined to each of the tubular projections, and a cast aluminum member having a bore extending therethrough and fixed to the open end of the main pipe with said open end of said main pipe inserted in the bore.
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) | 1992-05-15 | 1992-11-14 | 1993-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-15 | 1996-11-14 | 1997-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-15 | 2000-11-14 | 2001-05-16 | $7700.00 | Window Closed / Lapsed |