Class 29/888.45 - Composite or hollow valve stem or head making

Subclass of Class 29 - Metal working
Definition: Process wherein the manufactured article is a disk part
No. of patents: 34
Last issue date: 09/02/2008

Number	Title	Issue Date
7418781	Method for production of a throttle valve in a continuous throttle valve connector A peripheral, annular groove is incorporated into a throttle valve connector in one step. A first die and a second die are then inserted into the throttle valve connector and a first plastic material is introduced into a first cylindrical cavity formed thereby in a ...	09/02/2008
7347383	Modular fuel injector and method of assembling the modular fuel injector A fuel injector for use with an internal combustion engine. The fuel injector comprises a valve group subassembly and a coil group subassembly. The valve group subassembly includes a tube assembly having a longitudinal axis that extends between a first end and a sec...	03/25/2008
7328507	Simultaneous forming method of throttle body and throttle valve An electrically controlled throttle apparatus is constructed with a throttle body and a throttle valve that are simultaneously molded of a resinous material in the same molding dies. The throttle valve is rotatably assembled in a bore wall part of the throttle body ...	02/12/2008
7107679	Forming method of throttle apparatus for internal combustion engine A throttle valve and the throttle body are formed substantially simultaneously in the same dies. When a movable die moves away from a fixed die, a body ejector pin, a valve ejector pin, and a motor housing ejector pin simultaneously push a bore wall of the throttle ...	09/19/2006
7107678	Forming method of throttle apparatus for internal combustion engine A throttle valve and the throttle body are formed substantially simultaneously in the same dies. The melted resin is injected in to a cavity through a pair of valve gates. The valve gates are symmetrically located with respect to the throttle valve shaft. A deformat...	09/19/2006
7107683	Forming method of throttle apparatus for internal combustion engine A molding dies have a first shaft holding portion and a second shaft holding portion. The first shaft holding portion supports an outer surface of a metal shaft which is exposed between an axial end surface of the throttle valve and a first collar molded in the thro...	09/19/2006
7093362	Method of connecting components of a modular fuel injector A method of fabricating a modular fuel injector permits the fabrication of the electrical group subassembly outside a clean room while a fuel group subassembly is fabricated inside a clean room. The fuel injector comprises a valve group subassembly and a coil group ...	08/22/2006
7089663	Forming method of throttle apparatus for internal combustion engine A throttle valve and the throttle body are formed substantially simultaneously in the same dies. The melted resin is injected in to a cavity through a pair of valve gates. The gas evaporated from a melted resin and remaining air in the cavity are expelled from the c...	08/15/2006
6997995	Method for producing components with a high load capacity from TiAl alloys The invention relates to a method for producing components with a high load capacity from α+γ TiAl alloys, especially for producing components for aircraft engines or stationary gas turbines. According to this method, enclosed TiAl blanks of globular structure are...	02/14/2006
6938816	Methods of manufacturing diffusion bonded products and products manufactured by such methods A method is provided for diffusion bonding a first member (20) and a second member (3) to each other. According to this method, a first joint portion (24) of the first member and a second joint portion (34) of the second member are fitted...	09/06/2005
6912984	Composite lightweight engine poppet valve A composite lightweight engine poppet valve (10, 110, 210) that has a valve head portion (12, 112, 212) and at least a portion of the stem portion (14, 114, 214) made from a titanium intermetallic material attached by way of a solid state attach...	07/05/2005
6904668	Method of manufacturing a modular fuel injector A method of fabricating a modular fuel injector permits the fabrication of the electrical group subassembly outside a clean room while a fuel group subassembly is fabricated inside a clean room. The fuel injector comprises a valve group subassembly and a coil group ...	06/14/2005
6851165	Apparatus for retaining a poppet seal An apparatus and method for retaining a poppet seal with respect to a housing of an integrated pressure management system. The integrated pressure management system includes an aperture near a mouth of a housing, and the mouth includes a tip that is deformable so as...	02/08/2005
6553956	Composite lightweight valve for internal combustion engines In a composite lightweight valve for internal combustion engines having a solid valve head provided with a center opening and a valve stem received in the center opening of the valve head in a positively locking manner, the valve components are permanentl...	04/29/2003
6453867	Valve for combustion engines A valve for an internal combustion engine has a valve stem, a valve cone and a valve disk, with the valve cone having a recess to receive the valve disk, and the valve cone and valve disk together forming a cavity. The valve disk has a lesser diameter tha...	09/24/2002
6378543	Hollow poppet valve and the method for manufacturing the same In order to propose a hollow poppet valve having an excellent, high strength to weight properties by constructing it in order that no influence from welding heat is exerted onto the face, and no stress is concentrated at the welded portion, and a method f...	04/30/2002
6354258	Lightweight valve The invention relates to a hollow-stem valve for an internal combustion engine. The valve has a ratio of wall thickness to stem diameter of less than 1:3. The aim of the invention is to minimize the deformation of the valve head. To this end, the valve di...	03/12/2002
6308675	Gas exchange valve with a hollow space The invention relates to a gas exchange valve with a hollow space, for an internal combustion engine. The valve comprises a valve stem (3), a valve base and a valve disk (2). The valve stem and valve disk or valve stem and valve base have an approximately...	10/30/2001
6226866	Method of making carbon-carbon composite valve for high performance internal combustion engines The present invention provides a carbon-carbon (C/C) composite valve structure useful for high temperature internal combustion engines comprising (a) a carbon-carbon (C/C) composite valve stem having a flared end and a non-flared end opposite the flared e...	05/08/2001
6009843	Fiber reinforced, titanium composite engine valve Lightweight, strong, engine valves that incorporate a valve stem made from a refractory monofilament-reinforced, titanium-based metal matrix composite. Advantageously, the composite of the present invention is sufficiently strong so that valve stems incor...	01/04/2000
5996227	Valve needle for an electromagnetically actuated valve and process for manufacturing the same The new valve needle comprises at least one valve-needle section and a valve-closure member section of the valve needle which are manufactured as one part by means of deep-drawing. To guarantee a flowing of the fuel in the direction of the valve seat, two...	12/07/1999
5992018	Valve needle and process for producing a valve needle An electromagnetically actuatable valve, including a connecting piece, which is connected to an armature. The valve needle has a connecting piece with a circular cross section with an armature head formed by cold forming in which the armature head is weld...	11/30/1999
5769037	Hollow valve in an internal combustion engine A hollow valve is used as an inlet or exhaust valve in an internal combustion engine. A hollow valve has a valve head and a valve stem. A cavity extends from the valve head to the valve stem. A low melting point alloy in solid is inserted into the cavity ...	06/23/1998
5619796	Method of making an ultra light engine valve An ultra light popper valve for an internal combustion engine. The valve is formed by cold forming a blank into an elongated cup having an extremely thin wall and a flared open end onto which a cap is welded, the bosom end of the cup which defines the tip...	04/15/1997
5517956	Titanium engine valve A titanium engine valve is fabricated with discrete head and stem portions, preferably joined by inertia welding and/or diffusion bonding. The joint between the head and stem portions is located well up on the valve stem so that it is not exposed below th...	05/21/1996
5503122	Engine components including ceramic-metal composites Ceramic-metal composites are used in the fabrication of components for engines, particularly internal combustion engines. The composites are formed by infiltrating a molten metal into a porous ceramic matrix and cooling the metal to form a composite. Nume...	04/02/1996
5458314	Temperature control in an ultra light engine valve An ultra light weight poppet valve which includes elements for controlling the temperature of the valve during operation. The valve is of the type which is formed as an elongated cup having a flared open end to which a cap is fixed and in which an extreme...	10/17/1995
5409165	Wear resistant fuel injector plunger assembly A highly wear-resistant plunger assembly for a fuel injector, particularly an open nozzle fuel injector, is provided. The wear-resistant plunger assembly of the present invention includes components formed from wear-resistant materials specifically includ...	04/25/1995
5084113	Method of producing a buildup valve for use in internal combustion engines A buildup valve comprising a valve body of a quench-hardenable, heat resistant steel having a valve face and a buildup layer formed on the valve face from a cobalt or nickel base superalloy having higher wear and heat resistances than the heat resistant s...	01/28/1992
4850095	Method of forming crowned sliding surface in mechanical part A mechanical part comprises a sliding section and a sleeve section which are prepared separately. The sliding section is made of a wear resisting material such as ceramics and formed with a planar sliding surface at one of the sides thereof. The sliding s...	07/25/1989
4836719	Method and apparatus for machining valve seats and valve stem guides in a deep-walled engine monoblock workpiece Valve seats are machined at the end of an axially deep, narrow cavity of a workpiece having an axially clampable surface within the cavity adjacent one or more valve seats. The method comprehends: (a) supporting a rotary driven spindle assembly of suffici...	06/06/1989
4787736	Laser clad valve for internal combustion engine In an engine valve comprising a valve body of an iron base material, a Stellite or similar alloy is clad on the body using a laser beam with a sufficient energy to form a cladding layer as a valve face such that the iron from the body-forming iron base ma...	11/29/1988
4406046	Process for the production of a sodium-filled valve A process for the production of a sodium-filled valve in which the sodium is introduced into a hollow valve stem through a filling bore of relatively large diameter and which is sealed through a plug and/or usual welding. Subsequent to the closing off of ...	09/27/1983
4263799	Method and machine for forming a lump on the end of a pipe First a metallic pipe is tapered, so that it is substantially closed at its end, and so that its cross-section is reduced. Then it is pressed hard against a mold electrode, and a large electric current is passed through it to the mold electrode, so that t...	04/28/1981

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Class 29/888.45 - Composite or hollow valve stem or head making