Class / Patent application number | Description | Number of patent applications / Date published |
092255000 | Plural separable parts | 14 |
20080236387 | Piston assembly in fluid pressure cylinder - The piston | 10-02-2008 |
20080245231 | Piston, Especially Cooling Channel Piston, of an Internal Combustion Engine, Comprising Three Friction Welded Zones - A piston, such as a cooling channel piston of an internal combustion engine, has a first part, a second part and a third part. The parts can be produced separately from each other and subsequently assembled by way of a joining method. The third part has at least one rotationally symmetrical joining area disposed in direction of the first part, and, another rotationally symmetrical joining area disposed at least in the direction of the second part. The joining areas mate with joining areas of the first part and the second part. | 10-09-2008 |
20090038472 | Piston and Cylinder Unit - A piston and cylinder unit ( | 02-12-2009 |
20090071326 | Piston For Cold Chamber Die-Casting Machine - The object of the present invention is a piston for cold chamber die-casting machines comprising a body and at least one sealing band mounted around said body, wherein said body and said band are provided with coupling means suitable for concurrently obtaining both an angular locking and an axial locking of the band to the piston body. | 03-19-2009 |
20090101004 | Two part piston for an internal combustion engine - A two-part piston for an internal combustion engine comprising an annular outer piston connected to the crankshaft by two connecting rods and an inner piston fit into the bore of the annular outer piston connected to the crankshaft by one connecting rod. The reciprocating motion of the inner and annular outer piston is controlled by the location of the respective connecting rod bearing journals on the crankshaft. | 04-23-2009 |
20090120282 | Hydraulic Cylinder Piston - The invention relates to a hydraulic cylinder piston comprising a piston rod and a piston connected thereto. In accordance with the invention, the piston can be tensioned with respect to the piston rod via a screw system comprising two threaded rings, with the inner threaded ring of the two threaded rings comprising a removable tensioning element for the application of the pre-tension and with the outer threaded ring being movable relative to the inner threaded ring. | 05-14-2009 |
20100000403 | PISTON PORTION FOR A PISTON ASSEMBLY AND A PISTON ASSEMBLY - A piston portion ( | 01-07-2010 |
20110041684 | TWO-PART PISTON FOR AN INTERNAL COMBUSTION ENGINE - The invention relates to a two-part piston ( | 02-24-2011 |
20110083552 | PLUNGER ASSEMBLY - A plunger assembly including a pony rod adapter, a plunger releasably attached to the pony rod adapter, and a pony rod being releasably attached to the pony rod adapter. The pony rod adapter has a first cylindrical body and a number of apertures penetrating the first cylindrical body for receiving a lever. A first helically threaded pin is affixed to the first cylindrical body and projects from one of its ends. A second helically threaded pin is affixed to the first cylindrical body and projects from the other of its ends. The plunger has a second cylindrical body for reciprocating within a pumping chamber. The second cylindrical body has a first outer end with a first helically threaded bore for threadably receiving the first helically threaded pin. The second cylindrical body also has a first inner end with a polygonal socket for receiving a plunger key. The pony rod has a third cylindrical body for reciprocating into, and out of, the power end of a pump. The third cylindrical body has a second inner end with a second helically threaded bore for threadably receiving the second helically threaded pin. The third cylindrical body also has a second outer end. A peripheral flange is affixed to, and extends outwardly from, the second outer end. The peripheral flange is provided with a number of holes through which an equal number of threaded fasteners are extended for connecting the pony rod to the power end of a pump. | 04-14-2011 |
20110168016 | ASSEMBLED PISTON - An assembled two-part piston, comprising: a piston upper part and a piston lower part, wherein a screw thread connects the piston upper part to the piston lower part. | 07-14-2011 |
20130092024 | METHOD FOR SIMULTANEOUSLY PRODUCING FIRST AND SECOND PISTON PARTS - A method and apparatus for simultaneously producing a first piston part and a second piston part via a forging device may include an upper die, at least one intermediate die, and a lower die. A first billet may be placed between the upper die and the intermediate die, and a second billet may be placed between the intermediate die and the lower die. The upper die and the lower die may be configured to be moved toward each other, whereby the first piston part is forged from the first billet and the second piston part is forged at the same time from the second billet. The upper die and the lower die may then be configured to be moved apart, and the piston parts may be removed. | 04-18-2013 |
20130284018 | SCREW-ON ANNULAR RINGS FOR DIE CAST BERYLLIUM COPPER PLUNGER TIPS - A metal plunger tip has a forward generally cylindrical section having a leading relatively flat forward end and enlarging at its rearward end to a first land. A middle generally circular threaded section spans between the first land and a second generally larger land at its rearward section. A rearward generally cylindrical section of larger diameter spans between the second land a its rear surface that terminates with a section for attachment to an externally threaded push rod. There is an interior cooling cavity in the plunger tip terminating with a rear internally threaded section for mating with an externally threaded push rod. The metal plunger tip can be made from beryllium copper. The metal plunger tip may have a leading chamfered edge. A metal wear ring can be screwed onto the metal plunger tip. | 10-31-2013 |
092256000 | Fastening means for parts include resilient element | 2 |
20090217816 | BOLT SECURING ASSEMBLY AND METHOD FOR REPAIRING A WORN BOLT SECURING ASSEMBLY - A bolt securing assembly is provided for securing a piston bolt in a piston. The bolt securing assembly includes, but is not limited to a bolt received by an opening. The opening may be provided by a piston for an automobile combustion engine. The bolt is secured by a securing member in axial direction. The securing member comprises a spring force in axial direction. Since an unnecessary movement is prevented, but a necessary movement is allowed, the wear of the bolt securing assembly is reduced. | 09-03-2009 |
20120174770 | PISTON WIRE LOCK AND TOOL FOR INSERTING AND REMOVING THE SAME - An anti-rotation wire lock for use in a piston to reduce rotation of the anti-rotation wire lock while seated inside a wrist pin lock groove of the piston. The anti-rotation wire lock includes a wire lock body which curls from a first end of the wire lock body and a second end which extends in a direction out of a plane defined by the curled wire lock body. In addition, wire lock tools are disclosed for inserting and removing the anti-rotation wire lock. | 07-12-2012 |