| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 092153000 | WITH LUBRICATING MEANS | 38 |
| 20100095837 | Abradable Dry Film Lubricant and the Method for Applying Same and Article Made Therefrom - An article with an abradable dry powder coating thereon comprises an abradably coated article with a substrate surface and having at least one coating of a liquid primer on the substrate surface and then coating with at least one abradable dry powder coating on the surface of the liquid primer. The sequence of layers may also be reversed, or additional layers may be useful. The abradable dry powder coating is formed of a dry powder coating composition including a thermoset resin having a cure temperature combined with at least one filler material, wherein the filler is formed of a material which does not melt substantially at or below the cure temperature of the resin, whereby an abradable coating results employing a filler to make the coating. A method of making a composition for coating an article with a coating curable into an abradable coating is also disclosed, comprising melt-mixing an evaporative carrier-free mixture of a dry powder thermoset resin having a cure temperature, to form a mass composite, wherein the filler is formed of a material which does not substantially melt at or below the cure temperature of the resin, cooling the mass composite, and breaking the cooled mass composite into powder particles, thereby forming the composite powder composition. | 04-22-2010 |
| 20110005386 | LUBRICATING DEVICE FOR A LINEAR MOTION DEVICE - A linear motion device includes a housing which extends in a longitudinal direction, and in which a rotor movable in the longitudinal direction is accommodated, the housing including a lubricant supply device, via which the rotor may be supplied with lubricant. The lubricant supply device includes a plunger mounted on the housing and movable transversely to the longitudinal direction, and a spring via which the plunger may be pushed against the rotor, to establish a lubricant supply connection to the rotor via the plunger. | 01-13-2011 |
| 20110154982 | REFRIGERATION COMPRESSOR WITH INTERNAL COOLING SYSTEM - A refrigeration compressor includes an internal cooling system. The compressor includes a compressor shell ( | 06-30-2011 |
| 20110192277 | CAM MECHANISM AND LIQUID SENDING PUMP HAVING SAME - A lubricant supply mechanism is provided to an upper portion of a cam. A fixing member of the lubricant supply mechanism includes a recovery blade as a lubricant recovery member having lower end portions in contact with side face peripheral edge portions of the cam. The lower end portions of the recovery blade are in contact with the side face peripheral edge portions of the cam. An angle θ, which the lower end portions of the recovery blade make with a direction of rotation of the cam is smaller than 90°. | 08-11-2011 |
| 20110239856 | Plunger Pump Lubrication System and Method - A system and method for lubricating a packing gland of a positive displacement plunger pump. The system includes a pressure regulated lubricant discharge from the packing gland. The pressure regulated lubricant discharge maintains a positive pressure in the packing gland to resist unloading of the packing. | 10-06-2011 |
| 20120132069 | CYLINDER BORE FORMED WITH OIL POCKETS - A cylinder bore for minimizing the friction loss may include a plurality of oil pockets formed on stroke sections that contact a piston on an interior circumference of the cylinder bore. The oil pockets may be formed by a laser honing method, and may have different shapes over the stroke sections or different shapes over the stroke sections according to stroke speeds. Moreover, the oil pockets may have a structure such that more oils can be supplied to an upper stroke section or to a lower stroke section than to a center stroke section of the cylinder bore. Furthermore, the oil pockets may be formed symmetrically with respect to a center stroke section of the cylinder bore. | 05-31-2012 |
| 20130112073 | LUBE PUMP TELESCOPING ENCLOSURE - Enclosure ( | 05-09-2013 |
| 20130139682 | Single Sided, Dual Plunger Pump - A single sided, dual plunger pump is disclosed for use pumping difficult working fluids, including fluids with high particulate content. Each plunger operates in the opposite state as the other, such that when one plunger is filling with fluid, the other is discharging, and so forth. This creates discharge flow that is much more stable than a pump using only a single plunger, without requiring two individual pumps to be connected together. | 06-06-2013 |
| 20130205991 | Method of Producing Piston of Internal Combustion Engine - A method of producing a piston includes a step of producing a naked piston having the skirt portion; a step of forming the skirt portion with streaks; a step of applying a skirt portion of the s naked piston with a first film forming paint which is provided for producing the inner solid lubricant film; a step of heating the first film forming paint on the skirt portion at a temperature of 60° C. to 160° C. for a time less than 800 seconds to dry the same; a step of applying an outer surface of the dried first film forming paint with a second film forming paint which is provided for producing the outer solid lubricant film; and a step of heating the first and second film forming paints on the skirt portion at a temperature of 160° C. to 240° C. for a time of 15 minutes to 180 minutes. | 08-15-2013 |
| 20140000451 | RECIPROCATING COMPRESSOR | 01-02-2014 |
| 20140123848 | PISTON FOR A DIE-CASTING MACHINE - A piston for a die-casting machine, in particular with a cold chamber, comprises a stem which extends from a proximal end to a distal end along a piston axis and a piston head which extends from the distal end of the stem and which has a side wall with at least one sealing area suitable to form a seal on the wall of said container of the press. A lubrication circuit suitable for favouring the sliding of the piston comprises first lubrication ducts made in the stem and ending at the distal end of said stem, and second ducts made in the piston head, fluidically communicating with said first ducts and coming out in the lateral wall at least in correspondence with said sealed area. | 05-08-2014 |
| 20140318365 | RESTRICTOR AND PRODUCTION PROCESS OF A FLUID LEAKAGE RESTRICTOR FOR AEROSTATIC BEARINGS - Restrictors ( | 10-30-2014 |
| 20160025220 | Actuation Rod Lubrication System And Method - A cylinder retainer is provided. The cylinder includes: a retainer body having an exterior end and an interior end; a bearing surface located on the retainer body; and an oiler located in a recess in the retainer body. A method of lubricating a rod may be provided. The method may include: contacting an oiler with the rod; and locating a bearing surface on a cylinder retainer between a seal configured to keep fluid located on a surface of the rod in a cylinder and the oiler. | 01-28-2016 |
| 092155000 | Portion of expansible chamber device includes solid lubricating material | 4 |
| 20090025549 | PISTON - A piston is equipped with a skirt that has a sliding surface provided with an oil repellent resin layer. A solid lubricating resin layer and the oil repellent resin layer are exposed on the sliding surface. On the sliding surface, the oil repellent resin layer extends at an incline with respect to the centerline of the sliding surface in a circumferential direction of the piston. | 01-29-2009 |
| 20150033940 | SWASH PLATE - The outer periphery of the outer part of a substrate is a chamfer, and the outer part of the substrate is covered by a resin film layer. The thickness of the resin film layer at the chamfer is thicker than the locations radially further inwards from said chamfer. The surface of the resin film layer on the outer peripheral edge of the outer part is coplanar with the surface of the resin film layer further inwards. These locations act as the sliding surface the surface of the swash plate) that slides on a shoe, and compared with conventional techniques, because the resin film layer in the outer peripheral edge is thick, attrition of the portion being pressed against the shoe is suppressed. For that reason, the outer peripheral edge of the substrate and the vicinity thereof are prevented from being exposed, and seizure of the swash plate can be prevented. | 02-05-2015 |
| 20150047498 | PISTON FOR INTERNAL COMBUSTION ENGINE - A piston that moves reciprocally in the cylinder of an internal combustion engine and has a piston skirt that makes sliding contact with the inner wall of the cylinder. Solid lubrication parts are provided on the sliding-contact surface of the piston skirt. The solid lubrication parts include at least one type of silver, silver alloy, copper, or copper alloy, and at least one type of carbon material or carbide ceramics. | 02-19-2015 |
| 20160160645 | CONNECTING ROD AND PISTON FOR AN OIL-LESS PNEUMATIC MOTOR - A connecting rod and piston assembly for use in an oil-less pneumatic motor, wherein said connecting rod and piston do not require a wrist pin for connecting said rod to said piston; said connecting rod having at least two ends, connected to each other by a connecting member of a predetermined length; said at least two ends being a piston end and a crankshaft end; said piston end being distant said crankshaft end; said piston having a cylinder end and a connecting rod piston end receiving end, wherein said connecting rod piston end receiving end matingly engages said connecting rod piston end; said piston end is substantially ball shaped and said crankshaft end is shaped for engagement with a crankshaft; said connecting rod piston end receiving end is a socket shape to matingly receive said ball shaped piston end. | 06-09-2016 |
| 092157000 | Lubricant passage extends axially through articulated piston rod | 1 |
| 20140130663 | CROSSHEAD LUBRICATION SYSTEM - A system, in certain embodiments, includes a crosshead having a crosshead body, a recess formed in an outer surface of the crosshead body, and a lubricant port extending through the crosshead body from the recess to an aperture of the crosshead, wherein the crosshead is configured to move in a reciprocating motion in a machine. | 05-15-2014 |
| 092158000 | Piston has lubricant retaining or conducting means | 20 |
| 20080223209 | SYRINGE BARREL WIPER FOR LIQUID DISPENSING - A syringe for syringe pumps or like instruments is disclosed, having a modified plunger disposed with a barrel wiper for enhancing seal life of the syringe. The syringe comprises a cylindrical barrel that is slideably engaged to a plunger via a seal. The syringe barrel wiper provides for enhanced seal life by extended controlled lubrication to inhibit debris adherence and reduced seal friction by wiping the inside of the barrel to remove debris buildup and egress of debris. The wiper comprises a lubricant-permeated porous polymer material shaped as a cylindrical tubular member. | 09-18-2008 |
| 20080250922 | PISTON WITH PIN BORE LUBRICATION FEATURES - A piston has a piston body with a pair of pin bosses having pin bores aligned along a central axis. The pin bores have bearing surfaces, wherein at least one recess extends axially across at least one of the bearing surfaces. A groove extends partially about the bearing surface circumference and is arranged in fluid communication with the recess. The recess and groove provide a lubrication feature to the pin bore, while the bearing surface has an uninterrupted portion for enhanced load carrying capacity. | 10-16-2008 |
| 20080264247 | Lightweight Piston - A piston has a piston head that is provided with a field of rings and a piston shaft which is disposed thereupon. The piston shaft is equipped with supporting shaft wall sections and rear connecting walls which interconnect the shaft wall sections, have an arched shape, and are fitted with a bolt bore. An undercut free space is provided below the annular field in the area of the bolt bore in the region of the piston head. An arched zone is disposed in the interior of the piston at the transition from the bolt bore in the direction of the shaft wall session. | 10-30-2008 |
| 20090151554 | HYDROSTATIC DISPLACEMENT UNIT - A hydrostatic displacement unit having pistons which are composed at least partially of a high-grade aluminum material which are made of one piece or a composite to reduce wear. | 06-18-2009 |
| 20100018388 | PISTON SKIRT WITH FRICTION REDUCING OIL RECESS AND OIL RESERVOIR | 01-28-2010 |
| 20100043631 | Compressor with Improved Lubrication - A compressor for an air conditioning system comprises a piston and a pin. The piston comprises an aperture forming a piston bearing surface and a lubrication port in communication with the aperture. The pin comprises a pin bearing surface and the pin is received within the aperture to form an interface between the pin bearing surface and the piston bearing surface. In another embodiment, a method of lubricating within a compressor comprises rotating a crankshaft within a crankcase, introducing lubricant into the crankcase; and contacting the lubricant with a portion of a pin disposed within a piston via a lubrication port in the piston. In yet another embodiment, a piston for a compressor comprises an aperture forming a piston bearing surface and a lubrication port in communication with the aperture. | 02-25-2010 |
| 20100050861 | PISTON WITH A SKIRT HAVING OIL FLOW SLOTS AND METHOD OF CONSTRUCTION THEREOF - A piston has a pair of diametrically opposite skirt portions with convex outer surfaces. Each skirt portion has opposite side edges extending substantially parallel to a central axis of the piston to a free end. The skirt portions each have a recessed slot extending radially into the convex outer surface to a recessed surface. The recessed surface extends fully across the convex outer surface to the side edges and separates an upper band section of the convex outer surface from a lower band section of the convex outer surface. | 03-04-2010 |
| 20110185889 | PISTON WITH CENTRAL COOLING GALLERY COOLING FEATURE - A piston includes an upper crown portion and a lower crown portion with a pair of pin bosses spaced for receipt of a connecting rod. The pin bosses have pin bores aligned with one another along a pin bore axis. The upper crown portion and the lower crown portion form an outer oil gallery and a central oil gallery. The central oil gallery is formed in part by a floor extending radially inwardly from the outer oil gallery to a plateau. To facilitate cooling the central gallery, the plateau has a through opening and the floor has at least one trough depending axially therein. At least one oil flow passage extends in fluid communication between the outer oil gallery and the central oil gallery, wherein at least one oil flow passage is axially aligned with the at least one trough to provide a direct flow of oil to the trough. | 08-04-2011 |
| 20110197755 | GAS LUBRICATION STRUCTURE FOR PISTON, AND STIRLING ENGINE - A gas lubrication structure is provided with a high-temperature-side cylinder, an expansion piston lubricated relative to the high-temperature-side cylinder by gas, and a layer provided to the outer peripheral surface of the expansion piston and composed of a material flexible and having a higher linear expansion coefficient than the base material of the expansion piston. The thickness of the layer under normal temperatures is not less than the size of the clearance formed between the layer and the high-temperature-side cylinder. Also, even if the layer is thermally expanded under use conditions, the layer under normal temperatures has a thickness enabling a clearance to be formed between the layer and the high-temperature-side cylinder. | 08-18-2011 |
| 20130174726 | PISTON RING WITH IMPROVED LUBRICATION DELIVERY - A piston ring has a body member for sitting in a ring groove of a piston. The body member has an inner periphery, upper wall, lower wall and an outer periphery. The outer periphery has a concavity therein for storing lubricant therein. The upper wall has an outer section proximate to the outer periphery is constructed to be resiliently flexible between a flexed and unflexed position such during a portion of a power stroke, the volume of the concavity to store the lubricant is decreased by the flexing of the upper wall to the flexed position for expelling lubricant therefrom to a wall of the cylinder. The wall resiliently returns to the unflexed position during other times to allow excess lubricant from the wall of the cylinder to pass into the concavity. | 07-11-2013 |
| 092159000 | Pocket or chamber | 8 |
| 20090020006 | COMBINATION OF A PISTON AND A PISTON RING | 01-22-2009 |
| 20090044697 | PISTON WITH A SKIRT HAVING OIL FLOW SLOTS - A piston has a pair of diametrically opposite skirt portions each having an opening providing fluid communication between an outer surface of the skirt portions and an internal cavity. The openings provide the outer surfaces of the skirt portions with a circumferentially extending upper band portion above a horizontal plane extending through a pin bore axis and a circumferentially extending lower band portion below the horizontal plane. | 02-19-2009 |
| 20090101003 | Reciprocating compressor - A reciprocating compressor comprises: a cylinder having an oil pocket on an inner circumferential surface of a piston insertion hole for inserting a piston with a predetermined width and depth; and a piston having a bearing portion protruding so as to slidably contact an inner circumferential surface of the piston insertion hole, and inserted into the piston insertion hole of the cylinder, wherein the bearing portion is formed to have a length shorter than that of the oil pocket of the cylinder. Accordingly, a frictional loss between the cylinder and the piston is reduced. | 04-23-2009 |
| 20100107868 | Multi-part piston for an internal combustion engine and method for its production - The present invention relates to a multi-part piston ( | 05-06-2010 |
| 20110023706 | PISTON FOR AN ENGINE | 02-03-2011 |
| 20120210867 | PISTON-TO-SHOE INTERFACE LUBRICATION METHOD - Methods and apparatus are provided for lubricating a piston-to-shoe interface in a hydraulic motor or pump. Piston assemblies are installed in a housing that are each adapted to receive a reciprocating drive force and are each configured, in response thereto, to cyclically move between an intake direction and a discharge direction. Each piston assembly includes a piston and a piston shoe, and the piston, the piston shoe, or both have a plurality of pockets formed in a surface that defines a piston-to-shoe interface. When the pistons cyclically move, liquid is supplied to each piston-to-shoe interface to form a hydrostatic bearing at each piston-to-shoe interface. A portion of the liquid that is supplied to each piston-to-shoe interface is selectively supplied to and from one or more of the plurality of pockets. | 08-23-2012 |
| 20160017997 | SELF-CENTERING SERVO PISTON - A servo piston having an elongated member with a first end and a second end. The second end has a servo piston head disposed within a servo piston bore. The servo piston head has at least two grooves disposed about an outer edge of the servo piston head. At last one sealing ring is received within each groove. The use of rings in at least two grooves reduces side/transversal vibration and the servo bore load. At the same time, the space between the two grooves creates a pressurized oil squeeze film between the servo piston head and servo piston bore, sealed by the rings, which provides both a sealing and damping function at the same time. | 01-21-2016 |
| 20160033041 | PISTONS - Pistons are disclosed herein. An apparatus includes an actuator defining a first chamber; and a piston disposed in the first chamber, the piston including a second chamber and a seal groove in which a seal is disposed, the second chamber to receive fluid from the first chamber to enable a force imparted by the fluid within the second chamber to urge the seal into sealing engagement with a surface defining the first chamber. | 02-04-2016 |
| 092160000 | Port or passage extending through side wall portion | 2 |
| 20090007776 | Piston for an Internal Combustion Engine - A piston for an internal combustion engine has an annular cooling channel provided with oil admission boreholes and oil discharge boreholes, the oil discharge boreholes being oriented in the direction of the bolt hubs for the cooling thereof. | 01-08-2009 |
| 20120160092 | METHOD OF MAKING A PISTON OIL GALLERY USING A HOLLOW METALLIC CORE - A method of making an aluminum piston is described. In one embodiment, the method includes placing a oil gallery core in a mold, the oil gallery core comprising a metal tube connected to a hollow inlet tube and a hollow outlet tube; introducing liquid aluminum into the mold around the oil gallery core; and allowing the liquid aluminum to solidify, the oil gallery core forming a channel in the piston. Aluminum pistons are also described. | 06-28-2012 |
