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8151689 |
Radial piston machine
There is disclosed a radial piston machine comprising a cylinder block having at least one bore in which a piston supported on an eccentric disk is movably guided via roll bodies, wherein at least...
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8142170 |
Radial piston pump
A radial piston pump having external loading. The radial piston pump has an inner eccentric which is attached to a rotatable driveshaft, a cylinder block which has positionally fixed cylinder bores...
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8104398 |
Axial piston machine utilizing a swashplate design
A hydrostatic axial piston machine utilizing a swashplate design has a cylinder drum (3) that is mounted so that it can rotate around an axis of rotation (2). The cylinder drum (3) is provided with...
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8069773 |
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...
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7677326 |
Ram for powered hammer
A driving mechanism for a powered hammer having a motor and a tool holder includes a ram mounted for reciprocation in a guide tube section. The ram has a radially outwardly projecting sealing...
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7624574 |
Piston apparatus, stirling engine, external combustion engine, and fluid device
A piston apparatus which configures an air bearing by introducing a compressed working media into an inside of a piston, and ejecting the working media from plural holes arranged on a...
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7574954 |
Compressor
A reciprocating compressor is disclosed. The compressor includes a piston mounted to reciprocate inside of a cylinder that draws a working fluid into an inside of the cylinder, compressing, and...
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7513190 |
High-pressure pump for a fuel injection system of an internal combustion engine
A high-pressure pump having a rotationally driven drive shaft and at least one pump element which has a pump piston driven at least indirectly in a reciprocating motion by the drive shaft which...
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7500425 |
Axial piston machine
The invention relates to an axial piston machine, in particular, an air-conditioning compressor for motor vehicles, with at least one piston, an essentially cylindrical piston shaft and an...
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7415961 |
Piston for internal combustion engine, compressor or the like
A piston for internal combustion engine, compressor or the like, includes a piston ring, a piston skirt having a piston skirt wall. One or more lubricant channels and reservoirs are provided on an...
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7246551 |
Liquid handling device with surface features at a seal
A sample handling tool includes a body having at least one plunger associated with a channel and arranged for axial movement within the channel. A seal is provided in the channel and sealingly...
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7176166 |
Slide member
The present invention intends to provide a slide member with increasing an abrasion resistance and an adherence, a friction coefficient is further decreased. A part of the base member surface of...
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7086152 |
Engine piston and manufacture thereof
A method of forming a low-friction, helically ridged skirt surface of an engine piston comprises cutting a continuous groove in a piston body rotating about axis so that adjacent groove turns...
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6994014 |
Closed cavity piston for hydrostatic power units and method of manufacturing the same
Disclosed is a closed cavity piston made from a metal injection molding process. The piston has an elongated cylindrical body with a first end that is adapted to receive a slipper. The piston also...
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6928921 |
Piston bore
A piston for a compressor for use in hermetically encapsulated small-type refrigerating machines, with a cylinder-jacket-like sealing and guide surface section (1a, 2) as well as at least two...
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6837218 |
Radial piston pump
The invention relates to a radial piston pump for generating high fuel pressure in fuel injection systems of internal combustion engines, in particular in a common rail injection system, having a...
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6796778 |
Fuel injection pump having throttled fuel path for fuel lubrication
In a fuel path through which fuel is supplied to a pump-cam chamber accommodating a drive shaft and a cam for lubrication, an annular throttle fuel path is formed between an inside wall of a...
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6739238 |
Sliding structure for a reciprocating internal combustion engine and a reciprocating internal combustion engine using the sliding structure
A sliding structure for a reciprocating internal combustion engine, including sliding elements relatively slidable via lubricating oil therebetween, the sliding elements including sliding surfaces...
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6644936 |
Swash plate type refrigerant compressor
The outer diameter Φd1 of a top face-side end portion 35 of pistons 7 is made slightly smaller than the outer diameter Φd0 of a hollow cylindrical portion 36 of the pistons 7 other than the top f...
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6555777 |
Method of manufacturing bimetal slippers
A method of manufacturing male bimetal slippers includes the steps of forming a stem having opposite first and second ends; rigidly affixing a ball on the first end of the stem to form a male...
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6539836 |
Piston for internal combustion engine
An internal combustion engine for enhancing a heat radiation property of combustion gas, can sufficiently secure strength thereof relative to combustion gas, and a weight reduction thereof can be...
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6523456 |
Sliding members and piston for internal combustion engine
A sliding surface of at least one of sliding members sliding with respect to each other in a sliding direction comprises a protrusion extending along a direction intersecting the sliding direction...
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6431053 |
Piston for a swashplate reciprocating compressor
The present invention relates to a piston for use in a swashplate type compressor. The piston includes a void in the exterior surface of the head region that is positioned at a distance from a...
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6349679 |
Circularly-curved piston engine
This engine is substantially free from any vibration and noise, small in friction loss, improved in mechanical efficiency to a considerable extent, compact and lightweight, and applicable to a...
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6324959 |
Piston pump motor
The invention can prevent a heat generation and a seizure due to a sliding friction between a piston and a cylinder in inclined shaft type and swash plate type hydraulic pumps even when they are...
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6250206 |
Hydraulic piston filling
A filled hydraulic piston assembly includes a piston body having first and second ends and a compartment in the piston body extending inwardly from the second end toward the first end. The piston...
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6099274 |
Pump to surface pump
A reciprocating pump is provided for pumping subterranean fluids containing fine solids to surface. The pump comprises a pump barrel, piston and piston rod. The piston rod is suspended form...
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6077056 |
Reciprocating pump
The invention relates to a high pressure reciprocating pump, for a fuel injection system of an internal combustion engine, having at least one piston, which is displaceably supported in a piston...
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6016738 |
Piston compressor of the horizontal type
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6006652 |
Automotive refrigerant wobble plate type compressor piston with improved ball and socket joint
A wobble plate compressor piston has a central aperture formed through its front surface, directly into the ball and socket joint that connects it to the drive plate. High pressure refrigerant and...
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5983781 |
Sliding bearing with self-adjusted load bearing capacity
A sliding bearing, particularly for slippers of hydrostatic piston machines, with a support having a supporting surface on which slides a sliding piece having a sliding and sealing surface. Between...
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5842406 |
Piston for compressors including a restrictor to prevent the piston from rotating
A piston for use in a compressor that compresses gas containing lubricating oil is disclosed. The compressor includes a housing having a crank chamber and cylinder bores for accommodating the...
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5816134 |
Compressor piston and piston type compressor
A compressor has a piston (11) that reciprocates between a top dead center and a bottom dead center in a cylinder bore (2a) by means of a driving body (9) mounted on a rotary shaft (6) in a crank...
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5806631 |
Piston pin lubrication
A number of embodiments of direct piston pin lubrication systems for reciprocating machines such as internal combustion engines. In all of the embodiments, the hollow interior of the piston pin is...
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5797311 |
Piston/liner arrangement for a reciprocating-piston internal combustion engine
In a piston/liner arrangement for a reciprocating-piston internal combustion engine, wherein a piston with a skirt is axially movable in the liner, at least one of the piston skirt and the liner...
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5737999 |
Blowby pressure control above an oil control ring in a reciprocating internal combustion engine
A plurality of passageways were provided between the inter-ring cylindrical surface of a piston and a cavity formed behind an oil control ring mounted on the piston. The passageway provides for the...
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5713262 |
Engine piston having a recess defined in the lower surface of the head
A piston, which reciprocates in a cylinder bore of an engine, is supplied with lubricating oil. The piston includes pin bosses provided under a piston head, a symmetrical pair of skirts, and side...
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5692430 |
Articulated piston apparatus including a cooling gallery
An articulated piston apparatus including an improved skirt member wherein the skirt member includes a cooling gallery channel with means for providing a directed flow of lubricant from the cooling...
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5669285 |
Spherical joint connecting rod holder rings
Spherical joint connecting rod holder rings. The holder ring is formed in two halves which define a socket in which a spherical small end of the connecting rod is retained. The ring further...
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RE35551 |
Piston for alternative endothermic engines creating oil cushion lubrication
An improvement of pistons for alternative, endothermic four-cycle engines, in which notches or grooves are cut on opposite sides of the oval surface of the piston skirt and arranged in a parallel...
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5617822 |
Lubricating system for engine
An improved lubrication system for a two-stroke engine having a lubrication path from an oil sump directly to an induction valve assembly for noise reduction. The oil sump is divided into two...
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5572922 |
Actuating plunger of an electromagnetic pump
Disclosed is an actuating plunger of an electromagnetic pump, the actuating plunger having a good magnetic characteristic so as to improve the operational efficiency of the electromagnetic pump and...
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5483869 |
Sealed articulated piston
The design and construction of past articulated pistons include an open space between a head portion and an independent skirt portion. The open space allows excess cooling fluid, such as oil, to...
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5320027 |
Lubricant sealed bearing for forward and reverse rotation of rotating members
A lubricant sealed bearing, which is provided between a piston pin and a small end part of a connecting rod, comprises at least one rolling element and at least one grease standing ring. The grease...
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5313875 |
Piston with support member and bearing
A piston for an internal combustion engine has a crown and peripheral wall to carry a piston ring. A support extends between the wall and a bearing housing to receive the connecting rod. A...
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5241895 |
Air-powered splined rotary actuator
An air-powered actuator having a body with first and second ends, an axially transverse annular bulkhead positioned therebetween, and an output shaft with a splined exterior portion. The body...
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5232410 |
Rotational speed differential responsive type control coupling
A pair of orifices of different orifice sizes is provided between each pressure chamber and an accumulator chamber. A larger one serves as a variable orifice and a smaller one as a fixed orifice....
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5169162 |
Piston ring having a function which is for facilitating supply of lubricating oil into an annular groove of a piston
For carrying out lubrication between a piston (17) and a piston ring (21) installed in an annular groove (23) of the piston, the piston ring comprises a recessed portion (15a, 15b) which is...
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5118263 |
Hermetic refrigeration compressor
A single horizontal cylinder, small refrigeration compressor has a lubrication arrangement which includes a recess on the cylinder block above the cylinder bore which collects oil that drains from...
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H001037 |
Low friction rotary hydraulic drive
The device of the invention comprises a ball and socket and shoe assembly ich is pressure balanced with hydraulic fluid. This combination provides for low friction and relatively large travels when...
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