US3712064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for a clamping and loosening the exhaust manifold on internal combustion engines
Assignee: SOC D ETUDES DE MACHINES THERMIQUES FR
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Filing: 1971-03-24
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Granted: 1973-01-23
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Expires: 1991-03-24
Abstract
Abstract Mounting device for maintaining in proper position and possibly loosening or detaching the exhaust manifolds during removal of the sealing gaskets of the manifolds and/or the cylinder heads of internal combustion engines, comprising at least one supporting bracket for example at least approximately in the shape of a corner plate mounted upon the engine casing or cylinder block outside of but near the cylinder head and removably carrying the inlet end and in particular the fastening flange connecting said manifold to the cylinder head to hold it against motion and preferably spreading means associated with said supporting bracket for detaching or separating said flange from said cylinder head.
Inventors
- 👤 K Kuhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:23
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1805
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
144 words
In an internal combustion engine having at least one cylinder head supported by an engine casing, an exhaust manifold connected by a fastening flange extending about an inlet end of the manifold to the cylinder head and a sealing gasket mounted between the manifold and the cylinder head, a mounting device for keeping in proper position and loosening the exhaust manifold during removal of the sealing gasket of the manifold and of the cylinder head of the internal combustion engine, the mounting device comprising: at least one supporting bracket at least approximately in the shape of an angle plate mounted on the engine casing outside of but near the cylinder head and removably supporting the inlet end and in particular the fastening flange of the manifold; and spreading means associated with said supporting bracket to detach and separate the flange from the cylinder head.
Claim 2
Dependent Claim
144 words
In an internal combustion engine having at least one cylinder head supported by an engine casing, an exhaust manifold connected by a fastening flange extending about an inlet end of the manifold to the cylinder head and a sealing gasket mounted between the manifold and the cylinder head, a mounting device for keeping in proper position and loosening the exhaust manifold during removal of the sealing gasket of the manifold and of the cylinder head of the internal combustion engine, the mounting device comprising: at least one supporting bracket at least approximately in the shape of an angle plate mounted on the engine casing outside of but near the cylinder head and removably supporting the inlet end and in particular the fastening flange of the manifold; and spreading means associated with said supporting bracket to detach and separate the flange from the cylinder head.
Claim 3
Dependent Claim
90 words
A device according to Claim 1, wherein said supporting bracket includes a substantially vertical leg, said bracket located substantially below the flange of the manifold and including at least one bearing portion carrying the flange, said bearing portion being integral with said substantially vertical leg of said supporting bracket and engaging a complementary recess of the flange which is thereby slidably mounted on said bearing portion so as to be relatively movable in a direction substantially parallel to that in which the flange moves into contact with the cylinder head.
Claim 4
Dependent Claim
53 words
A device according to claim 2, whereIn each bearing portion consists of a substantially flat and horizontal bearing surface forming a shoulder-like rabetting fillister formed in the vertical leg of said supporting bracket and set with a sliding fit within a complementary recess forming a cut-out in the lower edge of said flange.
Claim 5
Dependent Claim
45 words
A device according to claim 2, wherein said bearing portion consists of at least two spaced projecting pins located substantially at the same level and integral with the vertical leg of said supporting bracket and slidingly engaging two corresponding smooth orifices, respectively, of said flange.
Claim 6
Dependent Claim
31 words
A device according in claim 1, wherein said spreading means comprises of at least one pulling element secured to said flange and co-operating at least through reaction with said supporting bracket.
Claim 7
Dependent Claim
28 words
A device according to claim 5, wherein said pulling element co-operates with said supporting bracket through the medium of an associated draw member connected to said supporting bracket.
Claim 8
Dependent Claim
55 words
A device according to claim 5, wherein said pulling element is a rod screw-threaded in a corresponding threaded hole of said flange and freely extending through the vertical leg of said supporting bracket through a smooth orifice to sustain the tractive force applied to its free end projecting from the other side of said leg.
Claim 9
Dependent Claim
27 words
A device according to claim 7, wherein said pulling element is a rotary screw the head of which bears against the outer surface of said supporting bracket.
Claim 10
Dependent Claim
35 words
A device according to claim 7, wherein the free end of said rod is shaped as a cog formed with a smooth orifice engaged with clearance by a draw member mounted on said supporting bracket.
Claim 11
Dependent Claim
66 words
A device according to claim 9, wherein said draw member comprises an eccentric crank-pin engaging the orifice of said cog which has the shape of a slot elongated substantially vertically, said crank-pin forming a free outer projecting eccentric portion of a rotary shaft rotatably mounted in a bearing integral with said supporting bracket and the opposite end of which is accessible for operating the rotation thereof.
Claim 12
Dependent Claim
40 words
A device according to claim 10, comprising a releasable self-acting locking system forming a spring-loaded catch for holding said shaft against motion in two diametrally opposite relative angular positions of maximum drawing near and moving away, respectively, of said flange.
Claim 13
Dependent Claim
68 words
A device according to claim 9, wherein said draw member is a tapered push-rod axially movable on said supporting bracket and extending with clearance into a complementary tapered orifice of said cog, said push-rod consisting of the projecting free end portion of a shaft axially slidably mounted in a bearing integral with said supporting bracket and the opposite end of which is accessible for operating its axial displacement.
Claim 14
Dependent Claim
41 words
A device according to claim 12, wherein said shaft is rotatably mounted in said bearing forming a stationary guide socket nut and extends with a corresponding threaded portion through the bottom of said socket nut to form a rotary thrust screw.
Claim 15
Dependent Claim
114 words
A device according to claim 6, wherein said supporting bracket is pivotally mounted on a substantially horizontal shaft parallel to said flange and mounted in a clevis integral with said engine casing whereas said pulling element consists of a pair of substantially symmetrical retaining stops laterally secured to said flange on each side thereof, respectively, and with which simultaneously co-operates said draw member formed of a yoke peripherally encompassing said flange and resting freely on said shaft by the forked lower free ends of its legs, at least one screw being threaded through a plate-like nut integral with the upper transverse portion of said yoke for bearing against the upper portion of said flange.
Claim 16
Dependent Claim
78 words
A device according to claim 1, wherein said supporting bracket is mounted on the top of the cylinder water jacket and comprises a vent duct forming an air escape pipe extending therethrough and connecting said water jacket to the cylinDer head while being formed in a tubular portion of said supporting bracket, which tubular portion projects from both opposite sides to extend in two corresponding recesses of said water jacket and cylinder head, respectively, terminating inner channels thereof.
Claim 17
Dependent Claim
64 words
A device according to claim 15, wherein the sealing relationship is achieved towards said water jacket by an annular sealing joint set in a groove of said supporting bracket and said and engaging said water jacket whereas towards said cylinder head said sealing relationship is achieved by a stack of a plurality of resilient rings located in an annular recess of the supporting bracket.
Claim 18
Dependent Claim
70 words
A device according to claim 15, wherein the sealing relationship is achieved towards said water jacket by an annular sealing joint set into a groove of said supporting bracket and engaging said water jacket whereas towards said cylinder head it is achieved by an annular sealing joint pressed against said cylinder head through the medium of a pressure ring by means of a coil spring mounted in said annular recess.
Claim 19
Dependent Claim
17 words
A device according to claim 15, wherein said vent duct is formed of said tubular portion proper.
Claim 20
Dependent Claim
47 words
A device according to claim 15, wherein said vent duct is formed of a tubular sleeve extending coaxially with clearance through said tubular portion and fitting with its opposite ends in said water jacket and said cylinder head, respectively, sealing contact means being provided on said ends.
Claim 21
Dependent Claim
42 words
A device according to claim 1, wherein the liner of said cylinder projecting from said water jacket comprises at least one radial spigot settling the relative angular position of said liner and engaging a corresponding vertical guide groove of said supporting bracket.
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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |