US3822763A - Anti-noise rocker arm cover - Google Patents
Anti-noise rocker arm cover Download PDFInfo
- Publication number
- US3822763A US3822763A US00294254A US29425472A US3822763A US 3822763 A US3822763 A US 3822763A US 00294254 A US00294254 A US 00294254A US 29425472 A US29425472 A US 29425472A US 3822763 A US3822763 A US 3822763A
- Authority
- US
- United States
- Prior art keywords
- cover
- pad
- noise
- rocker arm
- engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/006—Camshaft or pushrod housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/11—Thermal or acoustic insulation
- F02B77/13—Acoustic insulation
Definitions
- Caterpillar Tractor (30., Peoria, 111;
- a rocker arm cover is attached to an internal combustion engine by circumferentially disposed cap screws which extend through a peripheral flange formed on the cover.
- An elastomeric gasket is disposed between the flange and the engine to form a static seal thereat.
- An elastomeric, noise-suppressing pad is bonded to an outer surface of the cover and to a plate, overlying the pad.
- the pad constitutes a continuous sheet which is substantially coextensive with the top wall of the cover whereas in a second embodiment the pad constitutes an endless strip.
- An object of this invention is to provide a cover assembly for an engine which substantially suppresses noise levels during engine operation.
- the cover assembly comprises a cover having a peripheral flange formed thereon and attached to the engine, an elastomeric gasket compressed between the flange and the engine to form a static seal thereat and at least one elastomeric, noise-suppressing pad bonded between the cover and an outer plate.
- FIG. I is a transverse, cross sectional view of an antinoise rocker arm cover assembly attached to an engine
- FIG. 2 illustrates a modification of the rocker arm cover.
- FIG. 1 illustrates a rocker arm cover assembly removably attached to the cylinder head or block of an internal combustion engine 11.
- the cover completely encloses the rocker arms and attendant mechanisms (not shown) to protect them against damage and to prevent the egress of lubricating oil therefrom.
- a cover which may constitute die-cast aluminum or the like, comprises vertical sidewalls l2 and a top wall 113.
- the top wall preferably forms a inverted V-shape to define a longitudinally extending ridge 14 on the cover assembly.
- An inverted U-shaped flange 15 extends transversely from the sidewalls and circumvents the cover assembly.
- the flange comprises vertically disposed and parallel inner and outer legs 16 and. 17 which define a continuous channel 18 having an elastomeric gasket l9 disposed therein.
- a plurality of attaching means, such as cap screws 20, project through the flange and the gasket for compressing the gasket to form a static seal thereat, completely around the cover assembly.
- the predetermined degree of compression imparted to the gasket by the cap screws is precisely achieved by stop means comprising the extremities of the legs which are drawn into abutting engagement with a top planar surface 21 of the engine.
- FIG. 1 further illustrates an elastomeric, noisesuppressing pad means 22 bonded to an outer surface of cover 13 by a standard bonding agent.
- the pad means may comprise a continuous sheet of elastomeric material, such as fifty durometer nitrile rubber.
- transverse end portions of the pad means terminate closely adjacent to sidewalls 12 of the cover and extend longitudinally thereon substantially the full length of the cover.
- the first and second wall thicknesses of cover top wall 13 and pad means 22, respectively are substantially equal (e.g., one-eighth of an inch) and the third wall thickness of plate 23 is substantially one-half of each of such first and second thicknesses (e.g., one-sixteenth of an inch).
- the above first thickness is substantially two times the second wall thickness whereas the second wall thickness is substantially two times the third wall thickness.
- FIG. 2 illustrates a modification of the FIG. I cover assembly embodiment wherein like numerals are em ployed to depict corresponding structures.
- the pad means constitutes an endless elastomeric strip 22a extending longitudinally of the cover closely adjacent the sidewalls 12 and extending transversely at opposite ends of the cover in inwardly marginally spaced relation to the plate 23.
- a substantially enclosed opening 24 is thus defined centrally of the strip which extends substantially the full length of the cover assembly.
- An engine having an anti-noise cover assembly attached thereto said cover assembly comprising a cover having a peripheral flange formed therearound, said flange forming an inverted U-shape in cross section to comprise vertically disposed and parallel inner and outer legs defining a continuous channel therearound,
- an elastomeric gasket disposed in said channel be- I tween said flange and said engine
- elastomeric, noise isolating pad means bonded to an outer surface of a top wall of said cover and having transverse end portions thereof terminating closely adjacent to respective transverse sides of said cover, and
- cover assembly constitutes a rocker arm cover assembly having said top wall forming an inverted V-shape in transverse cross section to define a longitudinally extending ridge on said cover assembly.
- first and second wall thicknesses of the top wall of said cover and said pad means, respectively, are substantially equal and wherein a third wall thickness of said plate is substantially one-half of each of said first and second wall thicknesses.
- a first wall thickness of the top wall of said cover is substantially two times a second wall thickness of said pad means and wherein the second wall thickness is substantially two times a third wall thickness of said plate.
- said pad means constitutes an endless strip extending in inwardly marginally spaced relation to said plate.
- An anti-noise cover assembly comprising a cover having a peripheral flange formed therearound, said flange forming an inverted U-shape in cross section to comprise vertically disposed and parallel inner and outer legs defining a continuous channel therearound adapted to retain a gasket therein,
- elastomeric, noise isolating pad means bonded to an outer surface ofa top wall of said cover and having transverse end portions thereof terminating closely adjacent to respective transverse sides of said cover, and
- said cover constitutes a rocker arm cover having said top wall forming an inverted V-shape in transverse cross section to define a longitudinally extending ridge on said cover.
- first and second wall thicknesses of the top wall of said cover and said pad means, respectively, are substantially equal and wherein a third wall thickness of said plate is substantially one-half of each of said first and second wall thicknesses.
- a first wall thickness of the top wall of said cover is substantially two times a second wall thickness of said pad means and wherein the second wall thickness is substantially two times a third wall thickness of said plate
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Gasket Seals (AREA)
- Superstructure Of Vehicle (AREA)
Abstract
A ROCKER ARM COVER IS ATTACHED TO AN INTERNAL COMBUSTION ENGINE BY CIRCUMFERENTIALLY DISPOSED CAP SCREWS WHICH EXTEND THROUGH A PERIPHERAL FLANGE FORMED ON THE COVER. AN ELASTOMERIC GASKET IS DISPOSED BETWEEN THE FLANGE AND THE ENGINE TO FORM A STATIC SEAL THEREAT. AN ELASTOMERIC, NOISE-SUPPRESSING PAD IS BONDED TO AN OUTER SURFACE OF THE COVER AND TO A PLATE, OVERLYING THE PAD. IN ONE EMBODIMENT, THE PAD CONSTITUTES A CONTINUOUS SHEET WHICH IS SUBSTANTIALLY COEXTENSIVE WITH THE TIP WALL OF THE COVER WHEREAS IN A SECOND EMBODIMENT THE PAD CONSTITUTES AN ENDLESS STRIP.
Description
United States Patent Adams et a1.
92,73 I451 'utui a, 1974 ANTI-NOISE ROCKER ARM COVER inventors: Robert E. Adams, Chillicothe;
Gary 0. Bragg, Peoria; Nelson A. Jones, Peoria; Roger 1E. Treick, Peoria, all of I11.
Assignee: Caterpillar Tractor (30., Peoria, 111;
Filed: Oct. 2, 1972 Appl. No.: 294,254
U.S. Cl. 181/33 R, 123/9 O.38, 123/198 E Int. Cl. E0411) 1/99, GlOk 11/04 Field of Search..... 181/33 K; 123/198 E, 90.38
References Cited UNITED STATES PATENTS 4/1961 Gaebler 123/90.38
3,540,425 11/1970 Scheiteriein ct a1. 181/33 K Primary Examiner-Ricl1ard B. Wilkinson Assistant Examiner-Vit W. Miska Attorney, Agent, or Firm-Paul S. Lempio [57] ABSTRACT A rocker arm cover is attached to an internal combustion engine by circumferentially disposed cap screws which extend through a peripheral flange formed on the cover. An elastomeric gasket is disposed between the flange and the engine to form a static seal thereat. An elastomeric, noise-suppressing pad is bonded to an outer surface of the cover and to a plate, overlying the pad. In one embodiment, the pad constitutes a continuous sheet which is substantially coextensive with the top wall of the cover whereas in a second embodiment the pad constitutes an endless strip.
13 Claims, 2 Drawing Figures ANTI-NOISE ROCKER AIRM COVER BACKGROUND OF THE INVENTION duce the amplitude or to substantially shift noise fre-' quencies outside of such range.
SUMMARY OF THIS INVENTION An object of this invention is to provide a cover assembly for an engine which substantially suppresses noise levels during engine operation. The cover assembly comprises a cover having a peripheral flange formed thereon and attached to the engine, an elastomeric gasket compressed between the flange and the engine to form a static seal thereat and at least one elastomeric, noise-suppressing pad bonded between the cover and an outer plate.
BRIEF DESCRIPTION OF THE DRAWING FIG. I is a transverse, cross sectional view of an antinoise rocker arm cover assembly attached to an engine; and
FIG. 2 illustrates a modification of the rocker arm cover.
FIG. 1 illustrates a rocker arm cover assembly removably attached to the cylinder head or block of an internal combustion engine 11. The cover completely encloses the rocker arms and attendant mechanisms (not shown) to protect them against damage and to prevent the egress of lubricating oil therefrom. A cover, which may constitute die-cast aluminum or the like, comprises vertical sidewalls l2 and a top wall 113. The top wall preferably forms a inverted V-shape to define a longitudinally extending ridge 14 on the cover assembly.
An inverted U-shaped flange 15 extends transversely from the sidewalls and circumvents the cover assembly. The flange comprises vertically disposed and parallel inner and outer legs 16 and. 17 which define a continuous channel 18 having an elastomeric gasket l9 disposed therein. A plurality of attaching means, such as cap screws 20, project through the flange and the gasket for compressing the gasket to form a static seal thereat, completely around the cover assembly. The predetermined degree of compression imparted to the gasket by the cap screws is precisely achieved by stop means comprising the extremities of the legs which are drawn into abutting engagement with a top planar surface 21 of the engine.
FIG. 1 further illustrates an elastomeric, noisesuppressing pad means 22 bonded to an outer surface of cover 13 by a standard bonding agent. The pad means may comprise a continuous sheet of elastomeric material, such as fifty durometer nitrile rubber. The
transverse end portions of the pad means terminate closely adjacent to sidewalls 12 of the cover and extend longitudinally thereon substantially the full length of the cover.
A steel plate 23, substantially coterminous with respect to pad means 22 and preferably overhanging the transverse ends thereof, is bonded to an outer surface of the pad means in isolated relationship relative to the cover. In the preferred embodiment, the first and second wall thicknesses of cover top wall 13 and pad means 22, respectively, are substantially equal (e.g., one-eighth of an inch) and the third wall thickness of plate 23 is substantially one-half of each of such first and second thicknesses (e.g., one-sixteenth of an inch). In another embodiment, the above first thickness is substantially two times the second wall thickness whereas the second wall thickness is substantially two times the third wall thickness.
FIG. 2 illustrates a modification of the FIG. I cover assembly embodiment wherein like numerals are em ployed to depict corresponding structures. In this embodiment, the pad means constitutes an endless elastomeric strip 22a extending longitudinally of the cover closely adjacent the sidewalls 12 and extending transversely at opposite ends of the cover in inwardly marginally spaced relation to the plate 23. A substantially enclosed opening 24 is thus defined centrally of the strip which extends substantially the full length of the cover assembly. Although the above cover assembly embodiment is particularly useful for rocker arm cover applications, it should be understood that the teachings of this invention can be also applied to timing gear covers, oil pans and the like.
What is claimed is:
I. An engine having an anti-noise cover assembly attached thereto, said cover assembly comprising a cover having a peripheral flange formed therearound, said flange forming an inverted U-shape in cross section to comprise vertically disposed and parallel inner and outer legs defining a continuous channel therearound,
an elastomeric gasket disposed in said channel be- I tween said flange and said engine,
releasable attaching means, attaching said cover as sembly to said engine, projecting through said flange and said gasket for compressing said gasket to form a seal thereat which circumvents said cover,
elastomeric, noise isolating pad means bonded to an outer surface of a top wall of said cover and having transverse end portions thereof terminating closely adjacent to respective transverse sides of said cover, and
a plate bonded to an outer surface of said pad means,
in isolated relationship relative to said cover.
2. The invention of claim ll wherein said cover assembly constitutes a rocker arm cover assembly having said top wall forming an inverted V-shape in transverse cross section to define a longitudinally extending ridge on said cover assembly.
3. The invention of claim I wherein at least one of said legs abuts said engine to provide stops means for imparting a predetermined degree of compression to said gasket.
4. The invention of claim ll wherein first and second wall thicknesses of the top wall of said cover and said pad means, respectively, are substantially equal and wherein a third wall thickness of said plate is substantially one-half of each of said first and second wall thicknesses.
5. The invention of claim ll wherein a first wall thickness of the top wall of said cover is substantially two times a second wall thickness of said pad means and wherein the second wall thickness is substantially two times a third wall thickness of said plate.
6. The invention of claim 1 wherein said pad means constitutes a continuous sheet.
7. The invention of claim 1 wherein said pad means constitutes an endless strip extending in inwardly marginally spaced relation to said plate.
8. An anti-noise cover assembly comprising a cover having a peripheral flange formed therearound, said flange forming an inverted U-shape in cross section to comprise vertically disposed and parallel inner and outer legs defining a continuous channel therearound adapted to retain a gasket therein,
elastomeric, noise isolating pad means bonded to an outer surface ofa top wall of said cover and having transverse end portions thereof terminating closely adjacent to respective transverse sides of said cover, and
a plate bonded to an outer surface of said pad means,
in isolated relationship relative to said cover.
9. The invention of claim 8 wherein said cover constitutes a rocker arm cover having said top wall forming an inverted V-shape in transverse cross section to define a longitudinally extending ridge on said cover.
10. The invention of claim 8 wherein first and second wall thicknesses of the top wall of said cover and said pad means, respectively, are substantially equal and wherein a third wall thickness of said plate is substantially one-half of each of said first and second wall thicknesses.
11. The invention of claim 8 wherein a first wall thickness of the top wall of said cover is substantially two times a second wall thickness of said pad means and wherein the second wall thickness is substantially two times a third wall thickness of said plate,
12. The invention of claim 8 wherein said pad means constitutes a continuous sheet.
13. The invention of claim 8 wherein said pad means constitutes an endless strip extending in inwardly marginally spaced relation to said plate.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00294254A US3822763A (en) | 1972-10-02 | 1972-10-02 | Anti-noise rocker arm cover |
CA181,846A CA975640A (en) | 1972-10-02 | 1973-09-25 | Anti-noise rocker arm cover |
GB4556373A GB1396672A (en) | 1972-10-02 | 1973-09-28 | Anti-noise rocker arm cover |
DE19732349597 DE2349597A1 (en) | 1972-10-02 | 1973-09-29 | ENGINE COVER |
BE136222A BE805522A (en) | 1972-10-02 | 1973-10-01 | COVER MOUNTING FOR MECHANISM TO REMOVE NOISE |
FR7335231A FR2201717A5 (en) | 1972-10-02 | 1973-10-02 | |
JP48110898A JPS4971336A (en) | 1972-10-02 | 1973-10-02 | |
JP1982002612U JPS57145735U (en) | 1972-10-02 | 1982-01-12 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00294254A US3822763A (en) | 1972-10-02 | 1972-10-02 | Anti-noise rocker arm cover |
Publications (1)
Publication Number | Publication Date |
---|---|
US3822763A true US3822763A (en) | 1974-07-09 |
Family
ID=23132565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00294254A Expired - Lifetime US3822763A (en) | 1972-10-02 | 1972-10-02 | Anti-noise rocker arm cover |
Country Status (7)
Country | Link |
---|---|
US (1) | US3822763A (en) |
JP (2) | JPS4971336A (en) |
BE (1) | BE805522A (en) |
CA (1) | CA975640A (en) |
DE (1) | DE2349597A1 (en) |
FR (1) | FR2201717A5 (en) |
GB (1) | GB1396672A (en) |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3869859A (en) * | 1974-01-17 | 1975-03-11 | Gen Motors Corp | Engine and valve cover therefor having integral air gallery |
US4019600A (en) * | 1975-06-09 | 1977-04-26 | Caterpillar Tractor Co. | Anti-noise mounting means for transmissions |
US4027644A (en) * | 1975-06-26 | 1977-06-07 | Cummins Engine Company, Inc. | Isolated engine cover |
US4046128A (en) * | 1974-10-28 | 1977-09-06 | Fiat Societa Per Azioni | Cylinder heads for internal combustion compression-ignition engines |
US4066058A (en) * | 1976-05-12 | 1978-01-03 | Deere & Company | Vibration isolation system |
US4202311A (en) * | 1977-07-27 | 1980-05-13 | Toyo Kogyo Co., Ltd. | Means for resiliently connecting an oil pan to an engine body |
US4471731A (en) * | 1979-12-18 | 1984-09-18 | Cummins Engine Company, Inc. | Rocker housing and rocker cover |
US4480609A (en) * | 1980-10-23 | 1984-11-06 | Nissan Motor Company, Limited | Front cover of automotive engine |
US4563965A (en) * | 1984-08-02 | 1986-01-14 | Marvel Specialty Company | Acoustical shield assembly and mating thread preguide unit |
US4959033A (en) * | 1989-05-12 | 1990-09-25 | Outboard Marine Corporation | Marine propulsion device cover arrangement |
US5367993A (en) * | 1994-01-21 | 1994-11-29 | Navistar International Transportation Corp. | Valve cover joint seal assembly |
US6129494A (en) * | 1994-12-23 | 2000-10-10 | Schmalbach-Lubeca Ag | Compound dip process for metal cans |
US20020170775A1 (en) * | 2001-04-24 | 2002-11-21 | Stein Hans-Joachim Vom | Lid for muffling noises produced by an internal combustion engine, and method for producing such lid |
US20040188165A1 (en) * | 2003-03-24 | 2004-09-30 | Miller Alan S. | Engine cover with internal vibration damping plates |
US20050279567A1 (en) * | 2004-06-17 | 2005-12-22 | Kyowa Sangyo Co., Ltd. | Blocking devices for hollow structures |
US20060041227A1 (en) * | 2004-08-23 | 2006-02-23 | Kyowa Sangyo Co., Ltd. | Devices for blocking spaces defined within hollow structures |
US20060169531A1 (en) * | 2003-12-23 | 2006-08-03 | Christine Volker | Component that absorbs airborne sound |
ES2276584A1 (en) * | 2004-04-20 | 2007-06-16 | Honda Motor Co., Ltd. | Sound-proof structure in power unit |
US20070169991A1 (en) * | 2003-06-26 | 2007-07-26 | Ulrich Bertsch | Device and method for heat and noise insulation of motor vehicles |
US20100037848A1 (en) * | 2008-08-14 | 2010-02-18 | Ford Global Technologies, Llc | Valve cover with decoupled nvh isolation and sealing features |
US20100252357A1 (en) * | 2005-12-28 | 2010-10-07 | Kashirou Fukami | Sound insulation structure of internal combustion engine |
US20120037116A1 (en) * | 2008-12-30 | 2012-02-16 | Volvo Lastvagnar Ab | Engine arrangement comprising a noise shield |
CN101302946B (en) * | 2007-05-07 | 2012-06-13 | 通用汽车环球科技运作公司 | Cover assembly for an internal combustion engine |
US9091205B2 (en) | 2012-04-27 | 2015-07-28 | Ruben Santos | Rocker arm accessibility cover assembly |
US20170037851A1 (en) * | 2014-04-11 | 2017-02-09 | Magna Powertrain Huckeswagen GmbH | Motor vehicle vacuum pump having an adhesive |
CN112780879A (en) * | 2019-11-08 | 2021-05-11 | 山下橡胶株式会社 | Maintenance cover member |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2848503C2 (en) * | 1978-11-08 | 1983-05-05 | Alcan Aluminiumwerk Nürnberg GmbH, 6000 Frankfurt | Machine housing with a component that has a relatively small wall thickness |
DE2928233C2 (en) * | 1979-07-12 | 1984-06-28 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Device for damping the noise emanating from a pressure beam of a printer |
DE3028825C2 (en) * | 1980-07-30 | 1984-09-13 | Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen | Cushioning lining |
JPS5744952U (en) * | 1980-08-28 | 1982-03-12 | ||
DE3042988A1 (en) * | 1980-11-14 | 1982-07-01 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg | HOUSING COVER FOR SEALING THE STEERING WHEEL BOX OF AN INTERNAL COMBUSTION ENGINE |
JPS5922946U (en) * | 1982-07-31 | 1984-02-13 | 日野自動車株式会社 | Cylinder head cover |
DE19914934C2 (en) * | 1999-04-01 | 2002-02-28 | Man Nutzfahrzeuge Ag | Soundproof machine housing |
US20070014418A1 (en) * | 2005-07-14 | 2007-01-18 | Eatwell Graham P | Vibration excited sound absorber with dynamic tuning |
DE202006014707U1 (en) * | 2006-09-21 | 2008-02-14 | Mann+Hummel Gmbh | Seal for a tight connection of two molded parts |
DE102007013494A1 (en) * | 2007-03-21 | 2008-09-25 | Zf Friedrichshafen Ag | cast housing |
FR2934013B1 (en) * | 2008-07-16 | 2011-12-09 | Mann & Hummel Gmbh | PROCESS FOR ATTENUATING THE NOISE GENERATED BY A PIECE OF THE MOTOR OF A MOTOR VEHICLE |
-
1972
- 1972-10-02 US US00294254A patent/US3822763A/en not_active Expired - Lifetime
-
1973
- 1973-09-25 CA CA181,846A patent/CA975640A/en not_active Expired
- 1973-09-28 GB GB4556373A patent/GB1396672A/en not_active Expired
- 1973-09-29 DE DE19732349597 patent/DE2349597A1/en not_active Withdrawn
- 1973-10-01 BE BE136222A patent/BE805522A/en not_active IP Right Cessation
- 1973-10-02 FR FR7335231A patent/FR2201717A5/fr not_active Expired
- 1973-10-02 JP JP48110898A patent/JPS4971336A/ja active Pending
-
1982
- 1982-01-12 JP JP1982002612U patent/JPS57145735U/ja active Pending
Cited By (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3869859A (en) * | 1974-01-17 | 1975-03-11 | Gen Motors Corp | Engine and valve cover therefor having integral air gallery |
US4046128A (en) * | 1974-10-28 | 1977-09-06 | Fiat Societa Per Azioni | Cylinder heads for internal combustion compression-ignition engines |
US4019600A (en) * | 1975-06-09 | 1977-04-26 | Caterpillar Tractor Co. | Anti-noise mounting means for transmissions |
US4027644A (en) * | 1975-06-26 | 1977-06-07 | Cummins Engine Company, Inc. | Isolated engine cover |
US4066058A (en) * | 1976-05-12 | 1978-01-03 | Deere & Company | Vibration isolation system |
US4202311A (en) * | 1977-07-27 | 1980-05-13 | Toyo Kogyo Co., Ltd. | Means for resiliently connecting an oil pan to an engine body |
US4471731A (en) * | 1979-12-18 | 1984-09-18 | Cummins Engine Company, Inc. | Rocker housing and rocker cover |
US4480609A (en) * | 1980-10-23 | 1984-11-06 | Nissan Motor Company, Limited | Front cover of automotive engine |
US4563965A (en) * | 1984-08-02 | 1986-01-14 | Marvel Specialty Company | Acoustical shield assembly and mating thread preguide unit |
US4959033A (en) * | 1989-05-12 | 1990-09-25 | Outboard Marine Corporation | Marine propulsion device cover arrangement |
US5367993A (en) * | 1994-01-21 | 1994-11-29 | Navistar International Transportation Corp. | Valve cover joint seal assembly |
US6129494A (en) * | 1994-12-23 | 2000-10-10 | Schmalbach-Lubeca Ag | Compound dip process for metal cans |
US20020170775A1 (en) * | 2001-04-24 | 2002-11-21 | Stein Hans-Joachim Vom | Lid for muffling noises produced by an internal combustion engine, and method for producing such lid |
US6896098B2 (en) * | 2001-04-24 | 2005-05-24 | Ab Skf | Lid for muffling noises produced by an internal combustion engine, and method for producing such lid |
US20040188165A1 (en) * | 2003-03-24 | 2004-09-30 | Miller Alan S. | Engine cover with internal vibration damping plates |
US6834741B2 (en) * | 2003-03-24 | 2004-12-28 | General Motors Corporation | Engine cover with internal vibration damping plates |
US20070169991A1 (en) * | 2003-06-26 | 2007-07-26 | Ulrich Bertsch | Device and method for heat and noise insulation of motor vehicles |
US20060169531A1 (en) * | 2003-12-23 | 2006-08-03 | Christine Volker | Component that absorbs airborne sound |
ES2276584A1 (en) * | 2004-04-20 | 2007-06-16 | Honda Motor Co., Ltd. | Sound-proof structure in power unit |
US20050279567A1 (en) * | 2004-06-17 | 2005-12-22 | Kyowa Sangyo Co., Ltd. | Blocking devices for hollow structures |
US7422088B2 (en) * | 2004-06-17 | 2008-09-09 | Kyowa Sangyo Co., Ltd. | Blocking devices for hollow structures |
US20060041227A1 (en) * | 2004-08-23 | 2006-02-23 | Kyowa Sangyo Co., Ltd. | Devices for blocking spaces defined within hollow structures |
US20100252357A1 (en) * | 2005-12-28 | 2010-10-07 | Kashirou Fukami | Sound insulation structure of internal combustion engine |
CN101302946B (en) * | 2007-05-07 | 2012-06-13 | 通用汽车环球科技运作公司 | Cover assembly for an internal combustion engine |
US8141531B2 (en) * | 2008-08-14 | 2012-03-27 | Ford Global Technologies, Llc | Valve cover with decoupled NVH isolation and sealing features |
US20100037848A1 (en) * | 2008-08-14 | 2010-02-18 | Ford Global Technologies, Llc | Valve cover with decoupled nvh isolation and sealing features |
US20120037116A1 (en) * | 2008-12-30 | 2012-02-16 | Volvo Lastvagnar Ab | Engine arrangement comprising a noise shield |
US8602155B2 (en) * | 2008-12-30 | 2013-12-10 | Volvo Lastvagnar Ab | Engine arrangement comprising a noise shield |
US9091205B2 (en) | 2012-04-27 | 2015-07-28 | Ruben Santos | Rocker arm accessibility cover assembly |
US20170037851A1 (en) * | 2014-04-11 | 2017-02-09 | Magna Powertrain Huckeswagen GmbH | Motor vehicle vacuum pump having an adhesive |
US10094383B2 (en) * | 2014-04-11 | 2018-10-09 | Magna Powertrain Bad Homburg GmbH | Motor vehicle vacuum pump having an adhesive |
CN112780879A (en) * | 2019-11-08 | 2021-05-11 | 山下橡胶株式会社 | Maintenance cover member |
US11267413B2 (en) * | 2019-11-08 | 2022-03-08 | Yamashita Rubber Co., Ltd. | Maintenance cover member |
Also Published As
Publication number | Publication date |
---|---|
FR2201717A5 (en) | 1974-04-26 |
JPS57145735U (en) | 1982-09-13 |
BE805522A (en) | 1974-04-01 |
DE2349597A1 (en) | 1974-04-18 |
GB1396672A (en) | 1975-06-04 |
CA975640A (en) | 1975-10-07 |
JPS4971336A (en) | 1974-07-10 |
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Owner name: CATERPILLAR INC., 100 N.E. ADAMS STREET, PEORIA, I Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905 Effective date: 19860515 Owner name: CATERPILLAR INC., A CORP. OF DE.,ILLINOIS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905 Effective date: 19860515 |