US3096750A - Overhead camshaft engine valve mechanism - Google Patents

Overhead camshaft engine valve mechanism Download PDF

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US3096750A
US3096750A US124118A US12411861A US3096750A US 3096750 A US3096750 A US 3096750A US 124118 A US124118 A US 124118A US 12411861 A US12411861 A US 12411861A US 3096750 A US3096750 A US 3096750A
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valve
rocker arm
valve stem
cylinder head
link
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US124118A
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Christiaan H Bouvy
Dolza John
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DOLZA
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DOLZA
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12Transmitting gear between valve drive and valve
    • F01L1/18Rocking arms or levers
    • F01L1/181Centre pivot rocking arms
    • F01L1/182Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft
    • F01L1/183Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft of the boat type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02Valve drive
    • F01L1/04Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047Camshafts
    • F01L1/053Camshafts overhead type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00Cylinders; Cylinder heads
    • F02F1/24Cylinder heads
    • F02F1/26Cylinder heads having cooling means
    • F02F1/36Cylinder heads having cooling means for liquid cooling
    • F02F1/38Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/20SOHC [Single overhead camshaft]
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00Cylinders; Cylinder heads
    • F02F1/24Cylinder heads
    • F02F2001/244Arrangement of valve stems in cylinder heads
    • F02F2001/245Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/20Control lever and linkage systems
    • Y10T74/20576Elements
    • Y10T74/20882Rocker arms

Description

July 9, 1963 c. H. BOUVY ETAL 3,096,750

OVERHEAD CAMSHAFT ENGINE VALVE MECHANISM Filed July 14, 1961 2 Sheets-Sheet 2 INVENTOR5.

United States Patent This invention relates to overhead camshaft engine valve operating mechanisms and in particular to simplified valve train construction wherein rocker shafts are eliminated and a system of simple inexpensive valve train elements are employed between conventional camshaft lobes and each engine valve stem.

In the particular engine shown in the drawings for the purpose of illustrating the invention, the camshaft is located in the upper portion of a two part die-cast cylinder head between the intake and exhaust valve stems which have their axes extending in a V arrangement. The intake valve stem is located at one side of the longitudinal axis of the camshaft, and the exhaust valve stem is located on the opposite side thereof. In the instant invention, a rocker arm actuated by a cam on the camshaft is fulcrumed about a rocker arm link which is anchored at its lower end by a ball and socket connection to the cylinder head. The upper end of the said rocker arm link extends through the rocker arm which is secured by a ball and socket connection to the said rocker arm link. Thus, the rocker arm is mounted on a rocker arm link which is in effect a self-aligning tension member, thus eliminating the use of a rocker arm shaft. The V-arrangement of the valves, which may be offset in the direction of the longitudinal axis of the camshaft, permits the use of larger valves resulting in less restricted valve porting. This means that a higher power output can be obtained per unit of piston area.

The primary object of the instant invention is to provide an improved and simplified valve operating mechanism of the type aforesaid which is not only inexpensive to manufacture and readily installed but is highly efiicient and is substantially impossible to bind or freeze in operation, and which, when engine servicing is required, the valve operating mechanism can be serviced with a minimum of labor cost.

Another object of the invention is to provide a valve stem guide mounted in the cylinder head of an internal combustion engine having formed integral with the upper end thereof a guide cup for receiving the valve spring disposed between the inner annular base of the guide cup and the outer end of the engine valve stem, the said guide cup serving as a guiding support for a thrust cup telescoped thereover which engages the bifurcated end of the rocker arm and causes the cam end thereof to follow a cam lobe on the engine camshaft.

A further object of the invention is to provide resilient compression means located between the outer end of the valve stem and the valve contacting portion of the thrust cup whereby to localize all clearances in the valve train mechanism at'the top of the valve stem and constantly maintain all elements of the valve train mechanism in contact, thus stabilizing the valve train mechanism.

Other objects of the invention will become apparent by reference to the following detailed description taken in connection with the accompanying dnawings, in which:

FIG. 1 is a transverse vertical sectional view through the upper portion of one cylinder of an overhead camshaft internal combustion engine showing valve operating mechanism embodying the invention, the intake and exhaust valves being somewhat longitudinally offset.

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FIG. 2 is a top plan view of a rocker ann stamping preferably employed.

FIG. 3 is an end elevational view of the bifurcated thrust cup engagement end of the rocker arm taken on the line 3--3 of FIG. 2.

FIG. 4 is a transverse sectional view of the centnal socket portion of the rocker ar-m taken on the line 44 of FIG. 2.

FIG. 5 is a transverse sectional view of the cam contact arm end of the rocker arm taken on the line 55 of FIG. 2 showing the hardened cam follower pad preferably employed.

FIG. 6 is a bottom view of the thrust cup which is reciprooatingly mounted on the valve stem guide cup preferably formed integral with the valve stem guide.

FIG. 7 is a vertical sectional view taken on the line 7-7 of FIG. 6 showing the seats provided for the bifurcated end of the rocker arm.

FIG. 8 is a transverse sectional view taken on the line 8-8 of FIG. 7.

Referring now to the drawings wherein like reference characters refer to like and corresponding parts throughout the several views, the invention is illustrated in connection with a single cylinder of a multiple cylinder engine.

The single engine cylinder 1%} is provided with a usual piston 11 and a water cooling jacket 12 which, in the illustrated construction, may be formed of a stamping. The connecting rod, crankshaft and crankcase are not shown since they may be of any suitable design and are well known in the engine art.

The cylinder head generally designated by the reference character C is preferably die-cast of aluminum, and is formed of :a lower cylinder head section 13 and an upper cylinder head section 14'. An exhaust manifold 15 is secured in any suitable manner to the lower cylinder head section 13 and communicates with an exhaust passage 16 therein leading to an exhaust port 17. An intake manifold 18 is die-east in the lower and upper cylinder head sections 13 and 14 and communicates with an intake passage 19 in the lower cylinder head section 13 leading to an intake port 20. The said exhaust and intake ports 17 and 2t communicate with a combustion chamber 21, formed in the lower cylinder head section 13 directly above the cylinder 10.

Aligned holes 22 and 23 and aligned holes 24 and 25 are provided in the upper and lower head sections 14 and 13 respectively to accommodate the stems 28d and 295 of exhaust and intake valves 28 and 29 respectively. These pairs of aligned holes 22 and 23 and 24 and 25 have their axes on diagonal lines converging in a V-formation inwardly toward the vertical axis of the cylinder 10. A valve stem guide 26 is pressed or otherwise secured in each of the pairs of aligned holes 22 and 23 and 24 and 25 to reciprocatingly accommodate the valve stems 280 and 29d of the exhaust and intake valves 28 and 29 respectively. The exhaust and intake valves 28 and 29 are of the poppet type and have heads 231 and 291 respectively which seat in valve seats 1'71 and 2th) of the exhaust and intake ports 17 and 2d respectively.

The valve openating mechanism *or valve train for the exhaust valve 28 and intake valve 29 is the same, and is preferably operated from a single camshaft 32 located on the longitudinal axis of the row of engine cylinders 10 of a multiple cylinder engine and transversely between the exhaust and intake valve stems thereof. The said camshaft 32 has suitably located and oriented cam lobe 33 thereon, one for each of the exhaust and intake valves 28 and 29 of each cylinder 10. The cam shaft 32 is notat'ably mounted on bearings 34 which are suitably supported o-n longitudinally spaced webs preferably cast integral with the upper head section 14 of the cylinder 3 head C. The said camshaft 32 is driven in timed relationship to the rotation of the engine crankshaft by conventional means, not shown.

Inasmuch as the valve operating mechanism or valve train for each of the exhaust valve 23 and the intake valve 29 is the same, the said valve operating mechanism will be described in detail for the exhaust valve 28. The valve operating mechanism for each of the exhaust valve 28 and the intake valve 29 is preferably operated by a separate cam lobe 33 on the camshaft 32. The cam lobe for operating the intake valve 29 is not shown; however, it is obvious that it is oriented to open the said intake valve 29 at the proper time in relationship to the engine operating cycle.

The valve operating mechanism of the invention consists broadly of a valve stem guide 26 including a cup shaped thrust cap guide 260 preferably formed integral and concentric on the upper or extending end of the said valve stem guide 26. A thrust cap 36 in the form of an inverted cup is recipnocatingly mounted over the open end of the thrust cap guide 260. The closed end of the said thrust cap 36 is adapted for pressure contact with the upper end of the valve stem 280 of the exhaust valve 23. A valve compression spring 38 is disposed around the valve stem 280 of the exhaust valve 28 and has its lower end seated in the bottom of the cup shaped thrust \cap guide 260 of the valve stem guide 26. The upper end of the said valve compression spring is disposed in abutment against a valve spring retaining cap 39 fixed on the upper end of the valve stem 23 by such means as a two-part retaining ring 46 having an inwardly extending flange 41 disposed in a circumferential groove 42 formed in the upper end of the valve stem 286. The outer periphery of the said two-part retaining ring 40 is tapered to fit into the complementarily inwardly tapered inner periphery of the retainer cap 39 which telescopes over the said retaining ring 40.

A rocker arm 43 shown in detail in FIGS. 2-5 inclusive is mounted in ball and socket relationship on the upper end of a rocker arm link 44 which is also secured in ball and socket relationship to the upper cylinder head section 14. The said rocker arm 43 extends between a cam lobe 33 on the camshaft 32 and the thrust cap 36 for imparting valve opening movement to the exhaust valve 28 through its valve stem 280.

To secure the rocker arm link 44 in ball and socket relationship to the upper cylinder head section 14, a threaded bore 45 is formed in the top of the said upper cylinder head section 14 to accommodate a spherically shouldered head 44% provided at the lower end of the said rocker arm link 44. A cylindrical retaining bushing 47 having a semi-spherical lower end face 470 is telescoped over the rocker arm link 44 and is threaded into the said threaded bore 45; the said spherically shouldered head 440 on the rocker arm link 44 and the semi-spherical end face 470 of the cylindrical retaining bushing 47 being in mating relationship whereby to form a ball and socket or universal anchorage of the said rocker arm link 44 to the top of the upper cylinder head section 14. The said cylindrical retaining bushing 47 has a clearance 54 around the rocker arm link 44 so that the said rocker arm link 44 may be free for a limited swivel movement.

The ball and socket connection employed at the upper end of the rocker arm link 44 is accomplished by threading the upper end thereof at 441 for receiving a ball end member 50 having a semi-spherical lower face 51 which is in contact engagement with a complementarily formed semi-spherical face 52 stamped in the central portion of the rocker arm 43 which forms a lobe 53 in the bottom portion thereof. The said lobe 53 of the rocker arm 43 is provided with an elongated aperture 55 therein to accommodate the rocker arm link 44 and to permit relative movement of the rocker arm link 44 with respect to the rocker arm 43 at the mating semi-spherical faces 51 and 52 of the ball end member 50 threaded on the rocker arm link 44 and the rocker arm 43 respectively. A screw driver slot 56 is provided in the upper or outer end of the rocker arm link 44 to permit turning of the said rocker arm link relative to the threaded ball end member 50 whereby to adjust the clearances normally provided in the valve train between the cam lobe 33, the rocker arm 43, the thrust cap 36, and the intake valve stem 28% Referring now particularly to the rocker arm 43, it is preferably stamped to a generally channel shaped formation, and has its cam contact end provided with a hardened shoe 57 having a suitably curved contact surface 58 for contact with the cam lobe 33 mounted on the camshaft 32. The said cam contact surface 58 of the shoe 57 is preferably crowned as at 59 so as to smoothly follow the said cam lobe 33. At the end of the rocker arm 43 opposite the cam contact end thereof, two side walls 60 of the said rocker arm 43 extend outwardly beyond the base portion '61 thereof and terminate in laterally spaced arms 62 forming a bifurcated end which straddles the thrust cap 36. The two arms 62 of the rocker arm 43 have curved lower ends 63 which contact laterally extending diametrically opposite flanges 64 formed at the lower end or open end of the said thrust cap 36. The flanges 64 of the said thrust cap 36 are each provided with a depressed portion 65 to accommodate the lower curved ends 63 of the two laterally spaced arms 62 forming the bifurcated thrust cap contacting end of the rocker arm 43.

The outer periphery of the thrust cap 36 is formed with a flat wall at 67 adjacent the curved depressions 65 in the flange 64 to provide slight lateral clearance at the downwardly extending lower curved ends 63 of the laterally spaced arms 62 at the bifurcated thrust cap contact ing end of the rocker arm 43. The thrust cap 36 is provided with suitable apertures 68 in the closed end 37 thereof to permit breathing when the thrust cap 36 reciprocates on the guide cup 35.

A leaf type annular compression spring 69 is provided between the valve stem retaining cap 39 and the closed upper end 37 of the thrust cap 36 for taking up normal back lash in the valve train between the cam lobe 33 and the upper end of the exhaust valve stem 28.

The thrust cap guide 260 formed integral with the valve guide 26 provides a rigid bearing over which the thrust cap 36 reciprocates, thus eliminating side thrust on the engine valve stem 280. By the instant invention, it is possible to eliminate the usual rocker arm shaft and push rod construction, and a single camshaft may be employed with cam lobes thereon to operate the intake and exhaust valves having their axes disposed in a V-relationship at each engine cylinder. The elimination of the rocker arm shaft and the V-arrangement of the intake and exhaust valves with the camshaft therebetween reduces the overall height of the engine, and eliminates much costboth in original manufacture of the engine and in the servicing thereof.

Inasmuch as the rocker arm- 43 is tension-ally supported on the upper cylinder head section 14 by a rocker arm link 44 having a universal movement at both the cylinder head section 14 and at the rocker arm 43, a self-aligning tensionally supported valve train mechanism is provided which permits cam shaft and earn actuated "and controlled movement of the rocker arm 43 and engine valve 28 against the force of a valve compression spring 38 constantly urging of the engine valve 28 toward its closed position, all Without the use of a rocker shaft and without side thrust binding of the valve stem 28%) of the valve 28 in its valve stem guide 26.

As hereinbefore indicated, the valve train construction for the engine intake valve 29 is preferably like and similar to the valve described for the engine exhaust valve, the exhaust and intake valves 28 and 29 each being operated by a separate cam 33 on the camshaft 32. It is obvious that other cam arrangements may be employed with the instant invention. Also, the use of a suitable auxiliary spring means 69 within the thrust cap 36 acting between the closed end 37 of the thrust cap 36 and the upper end of the valve stem 28 functions ably as an antibacklash device for each valve train.

Although there are many advantages in employing the invention in connection with engines having a V-valve aruangement, it is of course contemplated that other valve dispositions may be used; for example, an in-line valve arrangement.

Axlthough but a single embodiment of the invention has been disclosed and described in detail, it is obvious that many changes may be made in the size, shape, arrangement and detail of the various elements of the invention, all without departing from the spirit and scope thereof as defined by the appended claims.

We claim:

1. In an internal combustion engine having a cylinder head, intake and exhaust valves arranged in said head, said valves including valve stems, a valve stem guide for each said valve stem including an integral thrust cap guide cup forming an extension of said valve stem guide, a thrust cup for contact engagement with the outer end of said valve stem reciprocatingly mounted on said thrust cap cup, a compression spring disposed in said thrust cap guide cup and in compressive engagement with the upper portion of said valve stem norm-ally urging said valve to close, a camshaft disposed between said valve stem guides, a rocker arm having contact engagement with said camshaft and said thrust cap, and a link anchoring said rocker arm to said cylinder head including means connecting said link to said cylinder head permitting limited universal movement of said link with respect to said cylinder head and means connecting said rocker arm to said link permitting a rocking movement of said rocker arm with respect to said link.

2. In an internal combustion engine having a cylinder head, a single overhead camshaft, intake and exhaust valves in said cylinder head each including a valve stem extending from said cylinder head arranged with their axes on diagonal lines in a V-formation, the intake valves and the exhaust valves being located at opposite sides of the longitudinal axis of said camshaft, compression spring means constantly urging said valves to their closed position, rocker arms arranged in operative relationship between said camshaft and each said valve stem, means anchoring said rocker arm to said cylinder head arranged for limited universal movement at said cylinder head and said rocker arm, and resilient clearance take-up means disposed between said rocker arms and said valve stems.

3. In an internal combustion engine of the overhead camshaft type having a cylinder head, intake and exhaust valves in said cylinder head, valve stems for said valves, valve stem guides extending through said cylinder head each having integral guide cups on the upper end thereof, a valve spring disposed in each said guide cup adapted to engage the upper portion of said valve stems for closing said valves, an inverted thrust cut guided for reciprocal movement on each said guide cup, said thrust caps having contact engagement with the outer ends of said valve stems, a camshaft having its longitudinal axis located alongside said intake and exhaust valve stems, cams on said camshaft, a rocker arm operatively contacting each said cam and a thrust cap, and a universal movement tension link betwen each rocker arm and said cylinder head, said tension link having a ball and socket connection to said rocker arm and a ball and socket connection to said cylinder head, and means limiting the universal movement of said tension link.

4. In an internal combustion engine, a cylinder, a cylinder head forming a combustion chamber with said cylinder, a piston reciprocable in said cylinder, intake and exhaust ports in said cylinder head leading to and from said combustion chamber, intake and exhaust valves for opening and closing said ports including valve stems arranged in V-formation extending through said cylinder head, a camshaft located between said intake valve stems and said exhaust valve stems, and cam means on said camshaft formed to open said valves in a selected timed relationship, a valve stem guide around each said valve stem extending through the said cylinder head including a cupped thrust cap guide on the outer end thereof, a thrust cap reciprocatingly mounted on each said thrust cap guide, a rocker arm opening each valve responsive to said cam means including a cam follower at one end thereof and a bifurcated thrust cap engagement formation on the other end thereof engaging said thrust cap, a rocker arm link connected to the cylinder head and to each rocker arm with limited universal movement therebetween, and compression spring means disposed in each cupped thrust cap guide acting on each valve stem to urge each said valve to close and cause said rocker arm to follow said cam means, and compression spring means in each said thrust cap disposed between each said valve stem and each said thrust ca-p whereby to localize clearances in the valve operating mechanism between each valve stem and the camshaft and stabilize the rocker arm mechanism.

References Cited in the file of this patent UNITED STATES PATENTS 1,281,196 Norrbom Oct. 8, 1918 1,292,215 Zeitlin Jan. 21, 1919 1,403,540 Church Jan. 17, 1922 1,481,951 Asbury Jan, 29, 1924 1,526,678 Poppe Feb. 17, 1925 1,535,583 Dobson Apr. 28, 1925 1,612,792 Asbury Ian. 4, 1927 1,631,563 Titus June 7, 1927 1,659,528 Hosterman Feb. 14, 1928 2,036,936 Halford Apr. 7, 1936 2,669,984 Marchal et a1. Feb. 23, 1954 2,769,438 Witzky Nov. 6, 1956 2,817,326 Taylor Dec. 24, 1957 3,016,887 Streit et a1. Jan. 16, 1962 3,045,657 Sampietro July 24, 1962 FOREIGN PATENTS 866,872 Great Britain May 3, 1961

Claims (1)

1. IN AN INTERNAL COMBUSTION ENGINE HAVING A CYLINDER HEAD, INTAKE AND EXHAUST VALVES ARRANGED IN SAID HEAD, SAID VALVES INCLUDING VALVES STEMS, A VALVE STEMS, GUIDE FOR EACH SAID VALVE STEM INCLUDING AN INTERGAL THRUST CAP GUIDE CUP FORMING AN EXTENSION OF SAID VALVE STEM GUIDE, A THRUST CUP FOR CONTACT ENGAGEMENT WITH THE OUTER END OF SAID VALVE STEM RECIPROCATINGLY MOUNTED ON SAID THRUST CAP CUP, A COMPRESSION SPRING IN SAID THRUST CAP GUIDE AND IN COMPRESSIVE ENGAGEMENT WITH THE UPPER PORTION OF SAID VALVE STEM NORMALLY URGINGS SAID VALVE TO CLOSE, A CAMSHAFT DISPOSED BETWEEN SAID VALVE STEM GUIDE, A ROCKER ARM HAVING CONSTANT ENGAGEMENT WITH SAID CAMSHAFT AND SAID THRUST CAP, AND A LINK ANCHORING SAID ROCKER ARM TO SAID CYLINDER HEAD INCLUDING MEANS CONNECTING SAID LINK TO SAID CYLINDER HEAD PERMITTING LIMITED UNIVERSAL MOVEMENT OF SAID LINK WITH RESPECT TO SAID CYLINDER HEAD AND MEANS CONNECTING SAID ROCKER ARM TO SAID LINK PERMITTING A ROCKING MOVEMENT OF SAID ROCKER ARM WITH RESPECT TO SAID LINK.
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3359959A (en) * 1966-11-29 1967-12-26 Chrysler Corp Walking beam rocker arm
US3791355A (en) * 1972-02-24 1974-02-12 Johnson Products Inc Mechanical lash adjuster for overhead cam engines
US4602598A (en) * 1983-01-24 1986-07-29 Locke Moore Spring and valve skirt
US4785773A (en) * 1985-07-06 1988-11-22 Volkswagen Ag Cylinder head for a water-cooled internal combustion engine
EP0599802A1 (en) * 1992-11-20 1994-06-01 Franz Dipl.Ing.Dr. Laimböck Headcylinder with valve drive for combustion engine
US20040255909A1 (en) * 2003-06-23 2004-12-23 Masaya Kurokawa Layout structure of a fuel injection device in a motor cycle
US20050145212A1 (en) * 2004-01-05 2005-07-07 Fuji Jukogyo Kabushiki Kaisha Intake and exhaust system for engine
US8056518B1 (en) 2009-04-08 2011-11-15 Brunswick Corporation Valve lash adjustment nut
US8813710B2 (en) * 2011-07-27 2014-08-26 Chrysler Group Llc Cylinder head assembly and method of forming the same

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US1281196A (en) * 1917-07-20 1918-10-08 Enock Norrbom Gas-engine.
US1292215A (en) * 1917-01-10 1919-01-21 Joseph Zeitlin Valve and valve-gear for internal-combustion and other engines.
US1403540A (en) * 1918-03-22 1922-01-17 Packard Motor Car Co Hydrocarbon motor
US1481951A (en) * 1920-04-18 1924-01-29 Dorsey F Asbury Valve-operating mechanism
US1526678A (en) * 1923-03-29 1925-02-17 Poppe Peter August Valve mechanism for internal-combustion engines
US1535583A (en) * 1921-02-23 1925-04-28 Dobson Gail Borden Valve-stem silencer
US1612792A (en) * 1924-02-21 1927-01-04 Dorsey F Asbury Valve-operating mechanism
US1631563A (en) * 1924-02-05 1927-06-07 John E Titus Automatic adjuster for push rods
US1659528A (en) * 1923-03-17 1928-02-14 Harry L Hosterman Internal-comdustion engine
US2036936A (en) * 1932-04-04 1936-04-07 Halford Frank Bernard Valve gear for internal combustion engines
US2669984A (en) * 1948-08-04 1954-02-23 Snecma Internal-combustion engine
US2769438A (en) * 1953-12-02 1956-11-06 Studebaker Packard Corp Cylinder head retainer
US2817326A (en) * 1956-02-16 1957-12-24 Studebaker Packard Corp Tappet spacer retainer
GB866872A (en) * 1959-08-15 1961-05-03 Austin Motor Co Ltd Improvements relating to overhead valve mechanism for internal combustion engines
US3016887A (en) * 1958-10-03 1962-01-16 Streit Alfons Valve gear
US3045657A (en) * 1959-07-22 1962-07-24 Thompson Ramo Wooldridge Inc Valve operating means

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1292215A (en) * 1917-01-10 1919-01-21 Joseph Zeitlin Valve and valve-gear for internal-combustion and other engines.
US1281196A (en) * 1917-07-20 1918-10-08 Enock Norrbom Gas-engine.
US1403540A (en) * 1918-03-22 1922-01-17 Packard Motor Car Co Hydrocarbon motor
US1481951A (en) * 1920-04-18 1924-01-29 Dorsey F Asbury Valve-operating mechanism
US1535583A (en) * 1921-02-23 1925-04-28 Dobson Gail Borden Valve-stem silencer
US1659528A (en) * 1923-03-17 1928-02-14 Harry L Hosterman Internal-comdustion engine
US1526678A (en) * 1923-03-29 1925-02-17 Poppe Peter August Valve mechanism for internal-combustion engines
US1631563A (en) * 1924-02-05 1927-06-07 John E Titus Automatic adjuster for push rods
US1612792A (en) * 1924-02-21 1927-01-04 Dorsey F Asbury Valve-operating mechanism
US2036936A (en) * 1932-04-04 1936-04-07 Halford Frank Bernard Valve gear for internal combustion engines
US2669984A (en) * 1948-08-04 1954-02-23 Snecma Internal-combustion engine
US2769438A (en) * 1953-12-02 1956-11-06 Studebaker Packard Corp Cylinder head retainer
US2817326A (en) * 1956-02-16 1957-12-24 Studebaker Packard Corp Tappet spacer retainer
US3016887A (en) * 1958-10-03 1962-01-16 Streit Alfons Valve gear
US3045657A (en) * 1959-07-22 1962-07-24 Thompson Ramo Wooldridge Inc Valve operating means
GB866872A (en) * 1959-08-15 1961-05-03 Austin Motor Co Ltd Improvements relating to overhead valve mechanism for internal combustion engines

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3359959A (en) * 1966-11-29 1967-12-26 Chrysler Corp Walking beam rocker arm
US3791355A (en) * 1972-02-24 1974-02-12 Johnson Products Inc Mechanical lash adjuster for overhead cam engines
US4602598A (en) * 1983-01-24 1986-07-29 Locke Moore Spring and valve skirt
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