Patent US4344905A successfully refreshed from Google Patents.
Patent US3985377A successfully refreshed from Google Patents.
US3985377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slip joint connection for engine exhaust system
Assignee: Caterpillar Inc
•
Filing: 1975-06-12
•
Granted: 1976-10-12
•
Expires: 1995-06-12
Abstract
Abstract The invention is concerned with a slip joint connection between an exhaust manifold attached to an engine which is resiliently mounted to a vehicle frame and an exhaust outlet member which is rigidly mounted to the vehicle frame. The connection comprises an exhaust outlet sleeve rigidly mounted to said engine in flow communication with the manifold having a first peripherally extending portion. The connection further includes a hollow piston having a second peripherally extending portion adjacent a first end thereof and having a generally spherical external surface adjacent a second end thereof, the diameter of the spherical surface being substantially equal to the internal diameter of the sleeve, the second end of the piston being received in generally tight relation within the sleeve. Also a part of the connection is a conduit rigidly mounted in flow communication with the exhaust outlet member and having an inlet end adapted to abut in generally tight relation against the first end of the piston. Further, means are provided for biasing the second peripherally extending portion away from the first peripherally extending portion sufficiently to forcibly abut the first end of the piston and the inlet end of the conduit.
Inventors
- 👤 Jacob W. Ahola
- 👤 Fred A. Rendfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:27
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1805; F01N13/1811; F16; F16L; F16L27/00; F16L27/02; F16L27/026; F01N2590/00; F01N2590/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
216 words
In an exhaust system including an exhaust manifold attached to an engine which is resiliently mounted to a vehicle frame and an exhaust outlet member which is rigidly mounted to the vehicle frame, a slip joint connection between said manifold and said outlet member, comprising: an exhaust outlet sleeve rigidly mounted in flow communication with said manifold having a first peripherally outwardly extending portion and an internal cylindrical surface; only one internal hollow piston, said piston having a second peripherally outwardly extending portion adjacent a first end thereof and having a generally spherical external surface adjacent a second end thereof, the maximum diameter of said spherical surface being substantially equal to the internal cylindrical diameter of said sleeve, said second end of said piston being received in generally tight relation within said sleeve, said first end of said piston being in the form of a flat annular surface; a conduit rigidly mounted in flow communication with said outlet member and having a flat annular inlet end adapted to abut radially and flatly in generally tight relation against said first end of said piston; and means for biasing said second peripherally extending portion away from said first peripherally extending portion sufficiently to forcibly abut said first end of said piston against said inlet end of said conduit.
Claim 2
Dependent Claim
216 words
In an exhaust system including an exhaust manifold attached to an engine which is resiliently mounted to a vehicle frame and an exhaust outlet member which is rigidly mounted to the vehicle frame, a slip joint connection between said manifold and said outlet member, comprising: an exhaust outlet sleeve rigidly mounted in flow communication with said manifold having a first peripherally outwardly extending portion and an internal cylindrical surface; only one internal hollow piston, said piston having a second peripherally outwardly extending portion adjacent a first end thereof and having a generally spherical external surface adjacent a second end thereof, the maximum diameter of said spherical surface being substantially equal to the internal cylindrical diameter of said sleeve, said second end of said piston being received in generally tight relation within said sleeve, said first end of said piston being in the form of a flat annular surface; a conduit rigidly mounted in flow communication with said outlet member and having a flat annular inlet end adapted to abut radially and flatly in generally tight relation against said first end of said piston; and means for biasing said second peripherally extending portion away from said first peripherally extending portion sufficiently to forcibly abut said first end of said piston against said inlet end of said conduit.
Claim 3
Dependent Claim
70 words
A connection in an exhaust system as in claim 1, wherein said first peripherally extending portion comprises a first flange and said second peripherally extending portion comprises a second flange and including means for preventing said second flange from being forced away from said first flange sufficiently to remove said second end of said piston from the interior of said sleeve and relative rotation of said first and second flanges.
Claim 4
Dependent Claim
44 words
A connection in an exhaust system as in claim 2, wherein the cross-sectional flow area of said conduit is at least about as large as that of said piston and at least about as large as the smallest cross-sectional flow area of said manifold.
Claim 5
Dependent Claim
53 words
A connection in an exhaust system as in claim 3, wherein said inlet end of said conduit is internally beveled to form a tapered throat with its larger end at said inlet end of said conduit, said larger end having a cross-sectional flow area greater than the cross-sectional flow area of said conduit.
Claim 6
Dependent Claim
25 words
A connection in an exhaust system as in claim 4, wherein said biasing means comprises a plurality of springs generally equally spaced one from another.
Claim 7
Dependent Claim
98 words
A connection in an exhaust system as in claim 5, including a first plurality of nubs in one to one relation with said plurality of springs extending from said first flange towards said second flange and a second plurality of nubs in one to one relation with said plurality of springs extending from said second flange towards said first flange each of said second plurality of nubs being aligned with each of said first plurality of nubs, each of said springs fitting over one of said first plurality of nubs and one of said second plurality of nubs.
Claim 8
Dependent Claim
205 words
In an exhaust system including an exhaust manifold attached to an engine which is resiliently mounted to a vehicle frame and an exhaust outlet member which is rigidly mounted to the vehicle frame, a slip joint connection between said manifold and said outlet member, comprising: an exhaust outlet sleeve rigidly mounted in flow communication with said manifold having a first peripherally outwardly extending portion and an internal cylindrical surface; only one integral hollow piston, said piston having a second peripherally outwardly extending portion adjacent a downstream end thereof, the maximum diameter of said spherical surface being substantially equal to the internal cylindrical diameter of said sleeve, said upstream end of said piston being received in generally tight relation within said sleeve, said first end of said piston being in the form of a flat annular surface; a conduit rigidly mounted in flow communication with said fluid exhaust member and having a flat annular inlet end adapted to abut radially and flatly in generally tight relation against said downstream end of said piston; and means for biasing said second peripherally extending portion away from said first peripherally extending portion sufficiently to forcibly abut said downstream end of said piston against said inlet end of said conduit.
Claim 9
Dependent Claim
205 words
In an exhaust system including an exhaust manifold attached to an engine which is resiliently mounted to a vehicle frame and an exhaust outlet member which is rigidly mounted to the vehicle frame, a slip joint connection between said manifold and said outlet member, comprising: an exhaust outlet sleeve rigidly mounted in flow communication with said manifold having a first peripherally outwardly extending portion and an internal cylindrical surface; only one integral hollow piston, said piston having a second peripherally outwardly extending portion adjacent a downstream end thereof, the maximum diameter of said spherical surface being substantially equal to the internal cylindrical diameter of said sleeve, said upstream end of said piston being received in generally tight relation within said sleeve, said first end of said piston being in the form of a flat annular surface; a conduit rigidly mounted in flow communication with said fluid exhaust member and having a flat annular inlet end adapted to abut radially and flatly in generally tight relation against said downstream end of said piston; and means for biasing said second peripherally extending portion away from said first peripherally extending portion sufficiently to forcibly abut said downstream end of said piston against said inlet end of said conduit.
References Cited (Backward Citations)
US1780693A
Cited
US2242604A
Cited
US2295907A
Cited
US2517470A
Cited
US3173710A
Cited
US3227475A
Cited
US3298680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |