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8141476 |
Durable piston and a ring unit for the durable piston
A durable piston is applied in a cylinder of an engine to output internal exploding power and has a piston head and a durable ring unit. The piston head is mounted in the cylinder of the engine, is...
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7963212 |
Combination of a piston and a piston ring
A piston 1 contains multiple ring grooves 2, 3 on the outer circumference of the piston 1, and piston rings 4, 10 are mounted in the ring grooves 2, 3. The piston 1 contains oil path grooves 7, 9...
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7634963 |
Piston ring comprising a coated running surface, and coating agent
The invention relates to a piston ring whose running surface is provided with a coating containing a plastic material. Said piston ring is characterized in that the coating is composed of at least...
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7594467 |
Internal combustion engine with improved thermal efficiency
An internal combustion engine includes a piston adapted to reciprocate in a cylinder. The piston includes a first portion, a second portion, and a third portion. The first portion of the piston...
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7185582 |
Oilless reciprocating fluid machine
An oilless reciprocating fluid machine has a piston mounted to a connecting rod by inserting a piston pin in a pin bore of a cylinder. The piston is reciprocally moved up and down in the cylinder...
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6739239 |
Caston piston
The invention relates to a molded piston, in particular an injection-molded piston (1) of fiber-reinforced plastic, which is seated slidably in a receiving bore (2) of a housing (4) and is embodied...
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6609454 |
Piston with seal
A method of forming a floating piston includes fabricating a piston cup, wherein the piston cup includes a top, a sidewall void of any seal-gripping irregularities, and an open end, and forming an...
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6293764 |
Reciprocating compressor with dry lubricating system
The compressor contains at least one piston (5) guided in a dry-running manner which, together with a cylinder insert (33), bounds a ring gap which is open over the common longitudinal section in...
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6205908 |
Piston equipped with piston ring
The present invention aims at reducing the amount of oil consumption in a piston using a piston ring continuously formed of resin without being provided with an abutment. A stepped portion is...
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5948330 |
Method of fabricating chopped-fiber composite piston
A three-dimensional piston molding is fabricated from a mixture of chopped, carbon tow filaments of variable length, which are prepregged with carbonaceous organic resins and/or pitches and molded...
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5884550 |
Integral ring carbon-carbon piston
An improved structure for a reciprocating internal combustion engine or compressor piston fabricated from carbon-carbon composite materials is disclosed. An integral ring carbon-carbon composite...
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5598763 |
Flutter free piston ring assembly
A piston and ring assembly operative within a cylindrical bore wall to retain fluid to one side. The piston has a side wall for movement along the cylindrical wall and has one or more spaced...
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5499572 |
Bi-tech piston
A piston for developing compression within the cylinder of a combustion engine or other type compression generating apparatus; said piston being a two-piece assembly, whereas the topside portion,...
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5435234 |
Mechanically retained wear-resistant ceramic pad
A ceramic-metal composite structure which minimizes tensile ceramic loads and accommodates differences in thermal expansion characteristics between a metal member and a ceramic member without...
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5408916 |
Piston having a liner and method for manufacturing same
A piston assembly (10) for use in an engine. The piston assembly (10) includes a piston body (12) with a liner (24) covering the interior surface (22) thereof. The liner (24) imbues added strength...
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5282411 |
Heat-insulating piston with middle section of less dense but same material
This heat-insulating piston has a piston head comprising a piston head base portion consisting of a ceramic material, a heat-insulating member jointed to the piston head base portion and consisting...
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5273009 |
Silicon-nitride-inserted piston
A metal of which the body of a piston is formed contains iron as its main component, and the configuration of a silicon nitride member, the high-temperature strength of the silicon nitride material...
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5251540 |
Piston having an aperture with an insert secured therein
A piston, e.g. for an internal combustion engine, comprises a crown (16) and a skirt (12). The skirt (12) has an aperture (22) in which an insert (14) of a different material from the remainder of...
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5245913 |
Piston of internal combustion engine
A piston of an internal combustion engine, arranged to suppress engine noise and vibration while improving the frictional resistance and seizure resistance of a piston skirt. The piston skirt of...
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5195478 |
Piston for an internal combustion engine
Disclosed is a piston for an internal combustion engine, which includes a land portion, and a skirt portion including a non-coated portion which is formed in an arbitrary shape on a sliding portion...
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5193435 |
Piston with ceramic load-transmitting pads
A piston comprises a crown (12) and a skirt (20). At least a portion of the skirt (20) is formed of a ceramic material injection moulded directly on to the remainder of the skirt (20) or the crown...
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5174193 |
Pistons for engines or motors
The piston comprises a crown (12), and a skirt 30 made of plastics material secured to the crown. The crown (12) is formed integrally with a depending boss (16) arranged to receive a gudgeon pin...
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5146883 |
Piston and connecting rod assembly
In a piston and connecting rod assembly for internal combustion engines, which assembly comprises a spherical small end portion, which is movably mounted in a recess of the piston head and in a...
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5117742 |
Piston of composite material with C-shaped ring groove
The present invention relates to an oilless reciprocating compressor and expansion apparatus each comprising a piston body to which a piston ring made of a self-lubricating material is fitted and a...
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5092289 |
Light alloy piston
In a light alloy piston for use in diesel engines for an indirect fuel injection, a body of fibrous material is embedded in the cast piston head and is formed with a shallow combustion recess. In...
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5018489 |
Heat-insulating piston
In a heat-insulating piston comprising a ceramic cylindrical member having the lower end surface thereof in contact with the outer peripheral upper end surface of a piston skirt member, a head base...
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5014604 |
Piston for internal combustion engine
An internally-chilled piston for an internal combustion engine is provided. This piston comprises a piston body made of an aluminum alloy and a piston head including a cylindrical member and a...
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4986231 |
Piston with graphite fiber mesh
Disclosed herein is a method of manufacturing a piston comprising the steps of providing a shell comprising graphite fibers formed to include the general shape of an open-ended cylinder having an...
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4971003 |
Piston of aluminum alloy for internal combustion engines
A fiber reinforced wire set along the edge of an open combustion chamber, which is provided in the piston head of a piston, is remelted with the edge of the combustion chamber, and solidified in...
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4966068 |
Split ceramic piston ring arrangement with nested biasing ring
A piston-ring arrangement for use in an internal combustion engine including a cylinder with a piston axially displaceable within the cylinder and at least one piston ring guided in the cylinder....
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4942804 |
Piston with ceramic insert that covers piston head portion defining cavity
A piston head has a cavity and a central projection projecting into the cavity. A ceramic insert is cast in a piston body so as to cover a piston head portion defining the cavity except the central...
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4939984 |
Investment-cast piston crown cap with encapsulated non-metallic insulating core
Pistons for internal combustion engines, particularly compression ignition engines. The pistons have insulating crowns and include a crown having a cap thereon, extending over the crown surface...
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4936269 |
Method and apparatus for reduced oil consumption and oil deterioration in reciprocating engines
A method and apparatus for reducing oil consumption and oil deterioration in a reciprocating engine. The engine is provided with ceramic rings and ceramic cylinder linings. Minimal oil lubricant is...
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4920864 |
Reinforced piston
A reinforced lightweight metal piston having fibers within the piston crown to reinforce the crown surface to improve the thermal properties and wear resistance of the crown surface. The...
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4909133 |
Lightweight piston architecture
The invention is an improvement in a lightweight carbon-carbon composite piston, the improvement comprehending the use of near-net shape knitted or warp-interlock pre-forms to improve the...
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4887518 |
Internal combustion engine piston with threaded ceramic piston head
A piston has a piston head made of ceramics, and includes a ceramic piston head having a male rounded thread portion at the outer periphery thereof, a metal piston body having a depression in the...
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4838149 |
Pistons
Pistons for internal combusion engines are described. The pistons comprise a crown component and a skirt component wherein the crown component consists of an iron or nickel based alloy annular...
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4833939 |
Built-up connecting rod
In order to achieve a positioning close to a combustion chamber of a swivelling axis between a connecting rod and a piston, a curved surface region facing a piston head of a tensioned band which is...
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4833977 |
Piston for internal combustion engine
A piston for an internal combustion engine, in particular of a passenger automobile, the piston including a ring carrier held in a piston basic body for accommodation of piston rings associated...
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4802382 |
Connecting rod assemblies intended for the reciprocating driving of a piston inside a cylinder
A connecting rod for reciprocally driving a piston within a cylinder wherein the piston rod includes upper and lower portions which are connected by an area of thinner dimension which is also...
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4798770 |
Heat resisting and insulating light alloy articles and method of manufacture
Light alloy articles comprising a body of light alloy having a composite fiber/light alloy layer, a sprayed heat-resistant alloy layer, and a sprayed ceramic base layer formed on the body in this...
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4798270 |
Hydraulically actuated sliding-caliper disc brake
An actuator for a hydraulically actuated caliper disc brake having a brake shoe comprises an actuating piston of two-part construction mounted for displacement in a cylinder and acted upon by a...
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4790726 |
Reciprocatory piston and cylinder machine
A reciprocatory piston and cylinder machine particularly suitable for use as a vacuum pump includes a cylinder (17), a cylindrical piston (16) relatively slidably reciprocable within the cylinder...
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4777844 |
Hybrid ceramic/metal compression link for use in higher temperature applications
A compression linkage is disclosed for use between a first swivel pin having a first thermal expansion characteristic and a second swivel pin of a second and differing thermal expansion...
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4774917 |
Piston and piston ring for an internal combustion engine
An internal combustion engine includes a cylinder block, a piston and a piston ring. The cylinder block includes at least one cylinder bore which includes a cylinder bore surface. The piston is...
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4773282 |
Piston rod assembly including an injection bonded piston head and fabrication method
Piston rod assembly includes a piston head and rod which are formed separately and subsequently jointed together by injecting adhesive through a porting passage in the piston head into an annular...
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4751871 |
Multisectional piston with plural ceramic parts and rigidly connected piston rod for use in horizontally opposed piston internal combustion engine
A multisectional piston for opposed-piston, slider-crank-drive internal combustion engines. The piston has a ceramic skirt (1), a skirt head (2), and a ceramic piston head (3) with fire land (4)....
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4746582 |
Ceramic-metal composite body
A ceramic-metal composite body including (a) a ceramic member, (b) a ferrous metal member bonded to the ceramic member, (c) an intermediate metallic member joined to the iron base member, and (d)...
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4742759 |
Ceramic insert cast piston
Disclosed herein is a ceramic insert cast piston for an internal combustion engine which includes a head made of ceramic, a metal ring fitted around the peripheral portion of the ceramic head, and...
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4741543 |
Piston scraper ring
A cylinder and piston assembly with an oil scraper ring having a radially washer seated in a radial piston groove, and a scraping skirt having a radially resilient truncated portion with the base...
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