Patent application number | Description | Published |
20080314347 | ROCKER ARM ASSEMBLY - A two step rocker assembly is provided having a lever body, a first roller assembly mounted to the lever body, and a center shaft extending through the first roller assembly. A second shaft extends through the lever body and defines a first pivot point. A coupling lever is pivotally connected to the second shaft and has an opening for receiving the center shaft. The coupling lever is rotatable about the first pivot point. A latch pin is mounted to the lever body. A second roller assembly is mounted on the center shaft. A spring lever is pivotally connected to the second shaft and is connected to the center shaft. The spring lever is rotatable about the first pivot point. A spring member is mounted on the lever body and engages the spring lever to bias the spring lever and the center shaft into the first position. | 12-25-2008 |
20090255492 | CONCENTRIC CAMSHAFT WITH VARYING WALL GEOMETRY AND METHOD OF ASSEMBLY - A camshaft may include a first shaft, a first lobe member, and a second lobe member. The first shaft may include an annular wall defining a first bore. The wall may include a first portion having a first radial outer surface and a second portion having a second radial outer surface that is radially offset relative to the first radial outer surface. The first lobe member may define a second bore having the first portion of the first shaft located therein and frictionally engaged with the first shaft for rotation with the first shaft. The second lobe member may define a third bore having the second portion of the first shaft located therein. The second lobe member may be rotatably disposed on the second portion of the first shaft. | 10-15-2009 |
20100012060 | Split Lobe Design of Concentric Camshaft - An engine assembly may include an engine structure and a camshaft supported on the engine structure. The camshaft may include a first shaft, a first lobe member fixed for rotation with the first shaft, a second lobe member fixed for rotation with the first shaft and spaced axially from the first lobe member, and a third lobe member located on the first shaft axially between the first and second lobe members. The third lobe member may include first and second portions coupled to one another to provide for assembly of the third lobe member on the first shaft after the first and second lobe members are fixed to the first shaft. | 01-21-2010 |
20100083498 | CAMSHAFT LOBE AND METHOD OF MAKING SAME - An automotive engine component and method of producing the same. The method uses dynamic magnetic compaction to form components with non-axisymmetric and related irregular shapes. A die is used that has an interior profile that is substantially similar to the non-axisymmetric exterior of the component to be formed such that first and second materials can be placed into the die prior to compaction. The first material is in powder form and can be placed in the die to make up a first portion of the component being formed, while a second material can be placed in the die to make up a second portion of the component. The second material, which may possess different tribological properties from those of the first material, can be arranged in the die so that upon formation, at least a portion of the component's non-axisymmetric exterior profile is shaped by or includes the second material. | 04-08-2010 |
20100088889 | Ballize In Tension Camshaft Assembly Process - A method may include locating first and second lobe members of a camshaft on a first shaft. The first shaft may include an annular wall defining a bore. The first lobe member may be located on a first portion of the first shaft and may define a first end of the camshaft. The second lobe member may be located on a second portion of the first shaft and may define a second end of the camshaft. The first shaft may be fixed from axial displacement and a tool may be displaced through the bore of the first shaft to fix the first lobe member to the first shaft. The fixing may include the first shaft being free from axial restraint in a first axial direction extending from the first portion of the first shaft to the second portion of the first shaft. | 04-15-2010 |
20100088890 | Double Ballize Camshaft Assembly Process - A method may include locating a first lobe member of a camshaft on a first shaft having an annular wall defining a first bore and a first outer radial surface. The first lobe member may include a second bore receiving the first shaft. The method may further include forcing first and second deforming members through the first bore. The first deforming member may have a first outer diameter that is greater than an initial inner diameter of the first shaft and may displace the annular wall in an outward radial direction to provide a first engagement between the first outer radial surface and the second bore. The second deforming member may have a second outer diameter that is greater than the first outer diameter and may displace the annular wall in the outward radial direction to provide a second engagement between the first outer radial surface and the second bore. | 04-15-2010 |
20100189587 | Method Of Making Component Shapes Having Non-Round Exterior Shapes - Cam lobe packs and methods of producing the same. The method uses a tool made up of an insert disposed within a sleeve such that both are responsive to a dynamic magnetic compaction (DMC) pressure source. The insert defines a substantially axisymmetric exterior surface and a cam lobe-shaped interior surface that can receive a compactable material such that upon DMC, the material is formed into the shape of the cam lobe. The sleeve is disposed about the insert and defines a substantially axisymmetric exterior surface such that an axisymmetric compaction imparted to the sleeve by the DMC pressure source forms the desired shaped cam lobe. The tool is configured such that individual tool members corresponding to one or more of the cam lobes can be axially aligned so that an aggregate interior surface is formed that defines an exterior surface profile of a camshaft being formed. | 07-29-2010 |
20100212144 | CONCENTRIC CAMSHAFT AND METHOD OF ASSEMBLY - A camshaft assembly method may include locating a first lobe member of a camshaft assembly on a first shaft of the assembly. A locking pin may be inserted into a first radial bore in the first lobe member and a second radial bore of the first shaft. The locking pin may have an annular wall defining a pin bore extending from a first end of the locking pin to a second end of the locking pin. A deforming member may be forced into the pin bore to displace the annular wall in an outward radial direction and into a frictional engagement with the first radial bore. The forcing may include a deforming member entering the pin bore at the first end of the locking pin and exiting the pin bore at the second end of the locking pin. | 08-26-2010 |
20100223771 | CONCENTRIC CAMSHAFT AND METHOD OF ASSEMBLY - A method of assembling a camshaft may include locating a first lobe member of the camshaft on a first shaft and inserting a locking pin into a first bore in the first lobe member and into a second bore in the first shaft. The locking pin may include a first recess extending into a first end thereof defining a first annular wall. A first retaining member may be forced into a first recess. The forcing may displace the annular wall in an outward radial direction and into a frictional engagement with the first bore. | 09-09-2010 |
20100224147 | CONCENTRIC CAMSHAFT AND METHOD OF ASSEMBLY - A camshaft may include a first shaft, a stop member, and a first lobe member. The first shaft may include an outer radial surface having a first recess extending radially therein. The stop member may be axially fixed within the first recess. The first lobe member may define an inner bore located on the outer radial surface of the first shaft. The first lobe member may include a second recess extending radially into the inner bore. The stop member may extend into the second recess to axially locate the first lobe member on the first shaft. | 09-09-2010 |
20110100310 | CONCENTRIC CAMSHAFT WITH VARYING WALL GEOMETRY AND METHOD OF ASSEMBLY - A camshaft may include a first shaft, a first lobe member, and a second lobe member. The first shaft may include an annular wall defining a first bore. The wall may include a first portion having a first radial outer surface and a second portion having a second radial outer surface that is radially offset relative to the first radial outer surface. The first lobe member may define a second bore having the first portion of the first shaft located therein and frictionally engaged with the first shaft for rotation with the first shaft. The second lobe member may define a third bore having the second portion of the first shaft located therein. The second lobe member may be rotatably disposed on the second portion of the first shaft. | 05-05-2011 |
20110220044 | CAMSHAFT INCLUDING WEIGHT REDUCING FEATURES AND METHOD OF FORMING - A camshaft assembly may include a assembly and a shaft. The cam assembly may include a hollow structure with an interior surface and an exterior surface. A plurality of projections may be located on the exterior surface of the hollow structure. The interior surface of the cam assembly may define a recess axially aligned with at least one of the plurality of projections. At least one of the plurality of projections may define an undercut portion. The cam assembly may be coupled with the shaft. | 09-15-2011 |
20120097120 | ENGINE INCLUDING CAMSHAFT WITH PARTIAL LOBE - An engine assembly may include a camshaft rotationally supported on an engine structure. The camshaft may include a first shaft, a second shaft located in and rotatable relative to the first shaft and a partial cam lobe located on the first shaft. The partial cam lobe may include a peak region and may define a partial bore. A radial distance defined by the partial bore between first and second circumferential ends of the partial bore may be greater than or equal to a radial width of the first shaft. The partial cam lobe may define a recess extending in a radial direction through the partial bore and into the partial cam lobe. The camshaft may include a sleeve located within a radial passage defined by the second shaft and the recess in the partial cam lobe and radially locating the partial cam lobe relative to the second shaft. | 04-26-2012 |
20130014714 | CAMSHAFT INCLUDING WEIGHT REDUCING FEATURES AND METHOD OF FORMING - A camshaft assembly may include a assembly and a shaft. The cam assembly may include a hollow structure with an interior surface and an exterior surface. A plurality of projections may be located on the exterior surface of the hollow structure. The interior surface of the cam assembly may define a recess axially aligned with at least one of the plurality of projections. At least one of the plurality of projections may define an undercut portion. The cam assembly may be coupled with the shaft. | 01-17-2013 |
20130068187 | ENCAPSULATED BALANCE SHAFT AND METHOD - A shaft assembly includes a shaft, a spacer and a cover. The body of the shaft includes a sealing portion, a balancing portion and a hollow portion which may collectively define a generally cylindrical space. The spacer substantially encloses the hollow portion of the body. The cover encapsulates the shaft body and the spacer to provide a substantially continuous cylindrical surface in sealing engagement with the sealing portion. The shaft assembly may be rotatably installed in an engine such that the balancing portion may be partially submerged in an oil bath in the engine and such that the substantially continuous cylindrical surface of the cover minimizes turbulence and aeration of the oil bath when the shaft assembly is rotated. The shaft may be configured for rotation in synchrony with a crankshaft. A method for encapsulating the shaft includes forming a continuous cylindrical surface in sealing engagement with the shaft body. | 03-21-2013 |
20130199648 | COMPOSITE ACCUMULATOR - A composite accumulator includes a base having a closed end and an open end, the base having an inner surface that defines a cavity and having a fluid port in communication with the cavity for communicating a hydraulic fluid in and out of the cavity. A cover is disposed over the open end of the base and is secured to the base by a fastener. A piston is disposed within the base and the cover. The piston is sealed to the inner surface of the cover and is translatable along an axis. A biasing member is disposed within the base and the cover and located axially between the piston and the cover. The base and the cover are plastic. | 08-08-2013 |
20140216378 | STATIONARY HYDRAULIC LASH ADJUSTER AND ROLLER FINGER FOLLOWER ASSEMBLY CLIP, AND METHOD THEREOF - An assembly clip for holding together a stationary hydraulic lash adjuster (SHLA) and a roller finger follower (RFF) in a valve train of an internal combustion engine (ICE) is provided. The SHLA has a pivot, and the RFF has a pivot cap configured to fit around the pivot. The assembly clip includes a first attachment section and a second attachment section configured to engage with the pivot cap and pivot, respectively, to attach the assembly clip to the RFF and SHLA, respectively. When assembled, the pivot and the pivot end are substantially located between the first attachment section and the second attachment section, the pivot cap covering at least a portion of the pivot. The assembly clip is made of an oil soluble material such that it may dissolve and break away after the valve train is assembled into the ICE, and the assembly clip no longer serves a function. | 08-07-2014 |