Class / Patent application number | Description | Number of patent applications / Date published |
123900500 | Rotation prevention | 27 |
20090031969 | FREELY ROTATABLE HYDRAULIC PIVOT ELEMENT - The freely rotatable hydraulic pivot element for an internal combustion engine has four oil inlets which are in fluid communication with the lash adjusting element inside the pivot element and in fluid communication with the oil gallery by using four more equally spaced oil inlets in the outer housing of the cylinder head while still in fluid communication therein. The use of four or more oil inlets are in the same radial plane of the outside cylindrical housing of the pivot element. | 02-05-2009 |
20090090317 | TAPPET APPARATUS - A tappet apparatus cooperates with a valve and a cam. The apparatus includes a case to reciprocate motion of the cam; and a locking unit in the ease, movable between an activated position at which the valve reciprocates motion of the case, and a deactivated position at which the valve is stationary regardless of the motion of the case. The locking unit may include first and second passages in the case; a pin, movable between a first and a second position within the first passage; and a column in the second passage. The pin may be situated in the column when the pin is in the second position. The activated position may be defined by the pin being in the first position, and the deactivated position may be defined by the pin being in the second position. | 04-09-2009 |
20090095240 | Schaltbares Bauteil fuer einen Ventiltrieb einer Brennkraftmaschine - The invention proposes a switchable component ( | 04-16-2009 |
20090107427 | Roller tappet for internal combustion piston engines comprising an anti-rotation device - An internal combustion piston engine comprising at least one cylinder head, said cylinder head closing at least one cylinder, inlet and outlet channels of said cylinder head being regulated, each one, by at least one inlet and outlet valve that is loaded by a closing spring, said inlet and outlet valves being activated by roller tappets ( | 04-30-2009 |
20090145378 | Switchable component for a valve train of an internal combustion engine - The invention proposes a switchable component ( | 06-11-2009 |
20100000476 | Anti-Rotation Feature for an Engine Tappet - An alignment feature for preventing in-bore rotation of an engine tappet. A first portion extends outwards from a tappet and a second portion extends into a hole in the tappet. The first portion extends longitudinally past the mounting hole such that when the feature and tappet are installed in an engine bore, the entire feature is prevented from rotation within the hole. The second portion extending orthogonally from the first portion into the mounting hole need not be close-fitting to the hole. The first portion may be substantially semi-cylindrical, having a convex cylindrical outer surface for fitting the walls of a semi-cylindrical channel in the engine bore and a concave cylindrical inner surface for fitting the outer wall of the tappet. The pin portion is preferably cylindrical. Other pin shapes are possible. The alignment feature may or may not be hardened. | 01-07-2010 |
20100037840 | Internal combustion engine - When viewed from the upper face of a cylinder head in which an intake port communicating with a combustion chamber of an internal combustion engine is formed, a starting point of the port is defined as a point of intersection of the streamline of the intake port and an inlet-side opening plane of the intake port as projected on a horizontal plane, and an end point is defined as a point of intersection of the streamline of the port and the center axis of an intake valve as projected on the horizontal plane. The starting point is located closer to the center of the chamber than a straight line that contains the end point and extends in a direction orthogonal to the axis of the crankshaft on the plane, and the streamline of the port projected on the horizontal plane is curved toward the center of the chamber, with respect to a straight line that contains the starting point and extends in a direction orthogonal to the axis of the crankshaft on the plane. | 02-18-2010 |
20100050964 | SWITCHABLE CUP TAPPET - A switchable cup tappet for a valve timing mechanism of an internal combustion engine, which has a cup basic body with an annular base loaded by large-lift cams. A hollow-cylindrical projection protrudes from an inner edge of the base and an inner body extends in the hole of the projection. The disc-like base is contacted by a small-lift cam. In a hole of the inner body two coupler pistons are coupled in sections with a driver surface of the cup basic body for a large valve stroke. The small stroke occurs by complete displacement into the radial hole. An annular web, spaced from its end faces at both ends, is attached integrally, in which the radial hole extends with the coupler pistons. The driver surface for the pistons is formed by a lower edge of the projection, which is spaced from the bases. | 03-04-2010 |
20100059001 | SWITCHABLE SUPPORT ELEMENT FOR A VALVE TRAIN OF AN INTERNAL COMBUSTION ENGINE - A switchable support element ( | 03-11-2010 |
20100089346 | SWITCHABLE SUPPORT ELEMENT FOR A VALVE TRAIN OF AN INTERNAL COMBUSTION ENGINE - A switchable support element ( | 04-15-2010 |
20100095916 | Lifter Guide - A guide for use in a vehicle engine having an engine block, cylinder head, and a cylinder head gasket. The guide comprises a valve lifter retention portion, a push rod retention portion in communication with the valve lifter retention portion via one or more apertures, and an alignment and attachment portion extending from the push rod retention portion and configured to be retained by contact with the cylinder head gasket. | 04-22-2010 |
20100175643 | ANTI-ROTATION LOCKING MECHANISM FOR CONTROLLING MECHANICAL PLAY - The antirotational, mechanical lash control mechanism for two reciprocating bodies having opposing cylindrical surfaces uses a radial U-shaped groove in the outer surface of the outer housing; a radial cut in the leg of said U-shaped groove, that extends from the groove into said bore; a U-shaped clip adapted to fit the U-shaped groove, the U-shaped clip having a ledge on a leg of U-shaped clip, where the ledge extends through said cut and into said bore; and a first stop on the outer surface of the inner housing, such that the first stop abuts said ledge to control mechanical lash between the outer housing and the inner housing. To prevent rotation, the ledge has a flat surface that mates to a flat surface on the inner housing. | 07-15-2010 |
20100206252 | HIGH-PRESSURE PUMP FOR A FUEL SYSTEM OF AN INTERNAL COMBUSTION ENGINE - The invention relates to a high-pressure pump for a fuel system of an internal combustion engine, having at least one inlet valve device with a valve element, a valve seat for the valve element, and an actuating tappet which can positively push the valve element in an opening direction. In order to create a high-pressure pump for a fuel system of an internal combustion engine which can be produced even more cost-effectively and which has a lower level of wear and therefore a longer service life, it is proposed that the valve element have a positioning mechanism which centers the valve element on the valve seat when the valve element comes into contact or is in contact with the valve seat. | 08-19-2010 |
20100229811 | SWITCHABLE COMPONENT OF A VALVE TRAIN OF AN INTERNAL COMBUSTION ENGINE - A switchable component ( | 09-16-2010 |
20100229812 | TAPPET | 09-16-2010 |
20100294219 | ROTATIONALLY LOCKED TAPPET OF A VALVE TIMING MECHANISM - The present invention relates to a rotationally locked tappet ( | 11-25-2010 |
20110056446 | ANTI-ROTATION DEVICE FOR A COUPLING PISTON IN A SWITCHABLE COMPONENT OF A VALVE TRAIN OF AN INTERNAL COMBUSTION ENGINE - An anti-rotation device ( | 03-10-2011 |
20120152187 | PUMP ACTUATOR ANTI-ROTATION DEVICE - A tappet having a contiguous body, an outer wall and transverse web. The outer wall defines a cylindrically-shaped outer surface and a recess. The recess is disposed within cylindrical surface of the body. An alignment member is press-fit between two staked ends of the recess, which engage opposite sides of the alignment member. The alignment member extends outwardly from the cylindrically-shaped surface. A roller is mounted to the contiguous body at the cam contacting end of the tappet. | 06-21-2012 |
20120160195 | Anti-rotation Roller Valve Lifter - A roller lifter for an internal combustion engine includes a cylindrical lifter body having a first end, a second end and a roller rotatably attached to the first end. The first end has a first diameter and the second end has a second diameter greater than the first diameter and a flat surface configured to engage a corresponding flat surface on an adjacent roller lifter and to prevent axial rotation of the roller lifter while in use. The roller lifter may further include a recess extending along a longitudinal axis from the second end toward the first end. | 06-28-2012 |
20120318216 | TAPPET ROLLER BEARING - A tappet roller bearing | 12-20-2012 |
20130104818 | TAPPET | 05-02-2013 |
20130152885 | Valve Lifter Assembly For Internal Combustion Engine - An internal combustion engine includes a cylinder block defining a lifter bore, and a valve lifter assembly positioned at least partially within the lifter bore and configured to actuate a push rod. The assembly includes a valve lifter and an angular displacement-limiting clip. A cutout is formed on a proximal end of the valve lifter and includes a channel and a taper. The valve lifter is rotatable out of alignment with a cam, and the clip limits angular displacement of the valve lifter via contacting a wall portion of the cylinder block. First and second fillets of the clip are positionable within the cutout, such that the taper provides a clearance for inhibiting impingement of the valve lifter upon the fillets. | 06-20-2013 |
20130152886 | Method Of Extending Engine Service Life And Angular Displacement-Limiting Clip For Same - A clip includes a one-piece metal body having a holder and an attached hanger. The clip is configured to couple with a valve lifter to form a lifter assembly for varying the position of a valve in an internal combustion engine. The holder may be C-shaped, and the hanger may be U-shaped. The one-piece metal body further includes an anti-scuffing outer profile, and a first and a second fillet transitioning from the holder to the hanger, for diffusing stresses induced in the clip at an angular displacement-limiting stop position defined by contact between the hanger and a wall portion of a cylinder block. Related methodology is disclosed. | 06-20-2013 |
20130284130 | Internal Combustion Engine Having Valve Lifter Assembly With Misalignment Limiting Key Pin - An internal combustion engine includes a housing defining a lifter bore, and a slot in communication with the lifter bore. A valve lifter assembly is positioned within the lifter bore such that a key pin of the valve lifter assembly extends into the slot. The key pin has a contoured outer surface contacting the engine housing within the slot at a first and a second rotational orientation of the valve lifter, to limit misalignment thereof. | 10-31-2013 |
20150090205 | Mechanical System, Injection Pump And Valve Actuator Comprising Such A Mechanical System And Manufacturing Method - A mechanical system, comprising a tappet including a body, a support element defining two bores centered on a first axis, a pin comprising two opposite ends each adapted to be fitted in one of the two bores, and a roller element positioned between the two bores along the first axis and movable in rotation relative to the pin around the first axis. The support element is distinct from the body and fixed thereto, and the support element also comprises at least one antirotation device integrally formed thereto. The mechanical system can be integrated into an injection pump and/or a valve actuator. | 04-02-2015 |
20160090879 | SWITCHABLE SUPPORT ELEMENT - A switchable support element ( | 03-31-2016 |
20170234172 | LOCKING DEVICE FOR A SWITCHABLE VALVE DRIVE COMPONENT | 08-17-2017 |