Bizarre Patents
Combination Beverage Container and Spittoon
A combination beverage container and spittoon includes a bottom portion including outer wall and a first inner wall defining a spittoon space.
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| Number | Title | Issue Date |
| 7827902 | Piston for a reciprocating-piston internal combustion engine provided with hardened piston ring grooves A piston made of a nitride-forming base alloy for a reciprocating internal combustion engine is disclosed. The piston includes a piston upper part having a plurality of peripheral piston ring grooves, each piston ring groove having two groove flanks, one of the pist... | 11/09/2010 |
| 7377206 | Piston for an internal combustion engine A piston for an internal combustion engine, which performs a sliding reciprocating motion in a cylinder, and a method for producing the piston. The piston has a piston head and a piston skirt having at least one bearing surface. The at least one bearing surface is p... | 05/27/2008 |
| 7377035 | Refrigeration device with improved DC motor A miniature cooling device includes numerous improvements capable of increasing the reliability and useful lifetime of the device, as well as improving electrical power to cooling power conversion efficiency. The improvements include a unitary DC motor shaft design ... | 05/27/2008 |
| 7291384 | Piston ring and thermal spray coating used therein, and method for manufacturing thereof The piston ring of the present invention comprises a thermal spray coating comprising chromium carbide particles having an average particle size of 5 μm or less, and a matrix metal composed of a Ni—Cr alloy or a Ni—Cr alloy and Ni at least on an outer periphera... | 11/06/2007 |
| 7287459 | Piston for internal combustion engine A piston for an internal combustion engine, the piston having a skirt part, comprises: a resinous coating layer formed on a surface of the skirt part; and a plurality of concaves regularly arranged in the resinous coating layer. The concaves are non-coated regions i... | 10/30/2007 |
| 7185581 | Composite fluid actuated cylinder A fluid actuator having a honed metallic sleeved inner liner assembled with fitted end caps. The inner liner and end caps are wound with carbon reinforced fiber filaments in both longitudinal and hoop orientations so as to withstand increased fluid pressure over tra... | 03/06/2007 |
| 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 the slide member is provided with a streak so that a surface rou... | 02/13/2007 |
| 7171936 | Piston having a patterned coating and method of applying same The present invention relates to a piston adapted for reciprocal movement within the cylinders of an internal combustion engine. The piston includes a body having a crown formed at the uppermost margins of the body and a skirt, depending from the crown, adapted for ... | 02/06/2007 |
| 7121192 | Piston ring coating A system and method for reducing microwelding of a piston ring installed in a circumferential groove of a piston, wherein the ring has at least one piston groove engaging surface which is coated with a polyaryletherketone polymer. This composition provides critical ... | 10/17/2006 |
| 7066132 | Piston with oxidation catalyst Pistons reciprocating in cylinders of a hydrocarbon-fueled internal combustion engine tend to trap air and unburned fuel between the top of the piston head and its enclosing cylinder wall. The circumferential side surface (or land) of the piston head above its upper... | 06/27/2006 |
| 7051645 | Piston for an engine A piston for use in an engine. The piston includes a piston head having at least one ring groove. The piston also includes a piston skirt coated with a first thickness of a bronze coating material, and a side panel adjacent the piston skirt that is coated with a sec... | 05/30/2006 |
| 7024981 | Wrist pin A wrist pin for a heavy-duty piston assembly has a body with an axis of rotation and a generally cylindrical outer surface. The outer surface is adapted for pivotal connection to both a pair of laterally spaced pin bores and a small end of a connecting rod generally... | 04/11/2006 |
| 6935618 | Valve component with multiple surface layers A sliding component, particularly a disk valve plate. The sliding component includes a multi-layer surface structure comprising a strengthening layer harder than the substrate material, and an amorphous diamond top layer. ... | 08/30/2005 |
| 6923153 | Piston and connecting rod assembly having phosphatized bushingless connecting rod and profiled piston pin The present invention relates to a connecting rod and piston pin assembly for an internal combustion engine to improve wear of the piston/connecting rod pivot point and reduce deformation of the pin bore. To this end, the assembly includes a piston having a pin bore... | 08/02/2005 |
| 6889596 | Compressor cooler and its assembly procedure A cryogenic refrigerator and more particularly, the cryogenic refrigerator compressor assembly procedure and to a mechanism for supporting piston for use in such a cryogenic refrigerator is described. Embodiments of the present invention solve the above-mentioned dr... | 05/10/2005 |
| 6807897 | Hydraulic piston and process for its surface treatment The present invention relates to a hydraulic piston and a process for its surface treatment in order to improve above all the wear resistance and corrosion resistance at the surface of the piston. As a favorable manufacturing process for the surface treatment of an ... | 10/26/2004 |
| 6705207 | Piston type compressor A piston type compressor has a housing, a cylinder block and a piston. The cylinder block is fixed to the housing. The piston is accommodated in the cylinder block. A piston ring is provided between the cylinder block and the piston. A sealing coat is made of soft m... | 03/16/2004 |
| 6622613 | Multipiece piston A multipiece piston comprises a steel upper part and a lower part which is screwed to the upper part and which contains the hubs. The design of the piston improves the strength of the lower part and its resistance to material defects, and reduces producti... | 09/23/2003 |
| 6595341 | Aluminum-coated plastic member A composite part of a clutch for use in a motor vehicle has a plastic carrier and a film of oxidized aluminum or an aluminum alloy overlying and adhering to that part of the carrier which is in sliding contact with at least one other part of the clutch. O... | 07/22/2003 |
| 6557457 | Bushingless piston and connecting rod assembly and method of manufacture A piston assembly for heavy duty diesel engine applications comprises a piston having pin bosses formed with pin bores for the accommodations of a wrist pin. The wrist pin is fabricated of steel and is extendable through the small end bore of a steel conn... | 05/06/2003 |
| 6212997 | Reciprocating fluid pumps with chromium nitride coated components in contact with non-metallic packing and gasket materials for increased seal life Chromium nitride coating of machine components such as reciprocating pump plungers for continuous sliding contact with non-metallic packing and gasket materials greatly increases the performance life of fluid seals. In an air driven reciprocating constant... | 04/10/2001 |
| 5943943 | Reciprocating compressor A reciprocating compressor includes a cylinder block, a plurality of cylinder bores extending through the cylinder block, and a plurality of pistons slidably received in the plurality of cylinder bores, respectively. The cylinder block and the pistons are... | 08/31/1999 |
| 5884600 | Aluminum bore engine having wear and scuff-resistant aluminum piston A reciprocating engine having an aluminum engine block, and an aluminum piston wherein the piston's skirt has a hard anodized first layer directly on the aluminum and a composite polymer coating atop the hard anodized layer.... | 03/23/1999 |
| 5836280 | Lubrication system for two cycle engine A feature of the invention resides in a plating arrangement for a piston that reciprocates within a cylinder. The piston includes a generally cylindrical piston body. The piston body includes a piston head with a nickel plating and a piston skirt with a t... | 11/17/1998 |
| 5740788 | Fiber reinforced ceramic matrix composite piston and cylinder/sleeve for an internal combustion engine This invention discloses a "ceramic" piston and cylinder/sleeve pair for an internal combustion engine. The pair has low coefficients of thermal expansion for closer parts tolerances without danger of seizing and/or breakage/cracking from dissimilar part ... | 04/21/1998 |
| 5713324 | Piston ring coating A system for preventing microwelding of a piston ring installed in a circumferential groove of a piston, wherein the ring has at least one piston groove engaging surface which is coated with thermal set resin, polytetrafluoroethylene and molydisulfide. Th... | 02/03/1998 |
| 5653021 | Production process of a piston To improve the abrasion resistance by increasing the ratio of copper content in the copper-type alloy layer on the periphery of the ring groove of a piston. A peripheral groove having a section of a roughly large trapezoidal shape larger than that of the ... | 08/05/1997 |
| 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 grooves in the side wall, each groove defining a pair of interio... | 02/04/1997 |
| 5560283 | Piston-Cylinder assembly of an internal combustion engine A piston having at least one piston ring in combination with a cylinder of a two-stroke internal combustion engine. The piston is made from an aluminum alloy and has a running layer covering at least 80% of the running surface of the piston. The running l... | 10/01/1996 |
| 5531574 | Closed-type compressor A closed-type compressor includes a closed casing accommodating an electric motor from which a rotational shaft extends and a compressing machine to be operated by the motor and the compressing machine is of a reciprocating-type and provided with sliding ... | 07/02/1996 |
| 5515770 | Piston having laser hardened primary compression ring groove and method of making same The piston made in accordance with the teachings herein includes a primary compression ring groove, a bottom and rear wall surface of which are hardened by the method of laser hardening. The method includes the steps of spraying the primary groove with a ... | 05/14/1996 |
| 5480847 | Brake assembly A hydraulic brake piston (11) is formed of a clay based ceramic or conventional ceramic material, such as a kaolin based ceramic with a low thermal conductivity. The piston (11) may be incorporated in a disc brake assembly comprising a caliper body (10) p... | 01/02/1996 |
| 5469777 | Piston assembly having abradable coating A piston assembly operable within a fluid bathed, cylinder wall, comprising a piston body (10) having at least one annular land (36) adapted to be in close-fitting relationship to the cylinder wall (37) an abradable coating (15) tenaciously adhered to sai... | 11/28/1995 |
| 5450784 | Electroplated piston skirt for improved scuff resistance A piston assembly is disclosed for use in an engine, which comprises a piston body including a crown, a skirt extending from the crown, and a pair of gudgeon pin bosses connected to the skirt. The skirt defines an exterior surface of the piston body and a... | 09/19/1995 |
| 5435872 | Sized coated pistons A piston having a defined sized outer diameter. The piston has a defined, coated surface which determines the specific outer diameter of such surface which is the contact surface with the cylinder of an internal combustion engine. The defined surfaces are... | 07/25/1995 |
| 5435873 | Method and apparatus for sizing a piston A method and apparatus for sizing a piston to a defined size outer diameter surface, which is the contact surface with the cylinder of an internal combustion engine. The apparatus method involves first measuring each piston, then calculating the amount of... | 07/25/1995 |
| 5392692 | Antiblow-by piston and seal construction for high temperature applications A piston and ring assembly operative within a cylindrical bore wall to retain fluid to one side of the assembly, comprising a piston having at least one annular stepped groove in the side wall of the piston, the groove being stepped into uppermost and low... | 02/28/1995 |
| 5313919 | Low friction reciprocating piston assembly A low-friction piston construction for use in an oil-fed cylinder bore with the piston skirt relieved to define lands that are coated with SFL (graphite, MoS2, BN, and a special expoxy resin). A method of making such piston construction includi... | 05/24/1994 |
| 5314717 | Process and apparatus for coating motor pistons The coating of the cylindrical periphery of engine pistons with coating compound, in particular low friction materials, is performed by means of screen printing. The pistons can be coated in the vertical position around their vertical central longitudinal... | 05/24/1994 |
| 5301599 | Pistons with ring groove reinforcing Pistons and a method for their manufacture are described. The piston has at least one piston ring groove reinforcing member being annular in form and having, in cross-section, upper and lower, generally radially extending face portions and a radially inne... | 04/12/1994 |
