Bizarre Patents
Wearable Device For Feeding and Observing Birds and Other Flying Animals
A device for feeding and observing flying animals comprising a hat, a support mounted on the hat and extending outward from the hat, and a feeder mounted on the support.
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| Number | Title | Issue Date |
| 8181968 | Piston ring A piston ring includes a piston ring body and a surface coating film formed on at least one of upper and lower surfaces of the piston ring body. The surface coating film comprises a heat-resistant resin and a metal powder contained in the heat-resistant resin, and a... | 05/22/2012 |
| 7229077 | Ordered elastomeric composite material Ordered elastomeric composites comprise an ordered arrangement of a number of first elastomeric phases distributed uniformly within a continuous matrix second elastomeric phase. The second phase can be formed from an elastomeric material that is relatively harder th... | 06/12/2007 |
| 7052019 | Piston ring and method of manufacturing the same A manufacturing method of a piston ring is developed, wherein the method provides a countermeasure for wear of butt ends of the ion plating film coated piston ring and a countermeasure for breakage of the piston ring and the piston ring manufactured at a low cost. A... | 05/30/2006 |
| 7052018 | Piston ring having wear resistant composition The invention discloses a piston ring comprising a piston ring substrate. The piston ring substrate comprises at least 50 volume %, of at least one intermetallic alloy, based on the total volume of the wear-resistant composition. The invention further relates to a p... | 05/30/2006 |
| 6938901 | Combustion gas seal for injector and sealing structure with the combustion gas seal The invention relates to a combustion gas seal for injectors and to a seal structure disposed therewith, for preventing leakage of combustion gas in a state in which an injector is mounted to an engine head. And, the number of parts is reduced, vibration and noise a... | 09/06/2005 |
| 6838196 | Nickel-aluminide based wear resistant material for piston rings A piston ring comprises a coating of a wear-resistant composite composition, particularly intended for high temperature applications. The wear-resistant composite composition comprises a ceramic compound and at least 50 volume %, based on the total volume of the wea... | 01/04/2005 |
| 6726216 | Piston ring with oxide-nitride composite layer A piston ring for use in a cylinder of an internal combustion engine, which ring is nitride-hardened at least on the sliding surface between piston ring and cylinder wall. The nitride layer is composed of a precipitated layer and a compound layer, wherein the piston... | 04/27/2004 |
| 6726220 | Dual seal assembly A dual seal assembly for providing a seal between a reciprocating rod and the gland is described. The dual seal includes first and second axially adjacent annular seal elements. The first seal element is constructed of a material having a different hardness than the... | 04/27/2004 |
| 6698763 | Piston ring A piston ring having a stainless steel base material, the base material having an upper surface, a lower surface, an inner circumferential surface and an outer circumferential surface, the surfaces each having a nitride layer formed thereon, the nitride l... | 03/02/2004 |
| 6517080 | Seal material having anisotropic properties A material comprised of two different polymers so that the material exhibits anisotropic properties. The anisotropic properties exhibit hardness and wear resistance along with flexibility. The anisotropic material is made up of a hard segment polymer and ... | 02/11/2003 |
| 6508473 | Piston ring A piston ring is made of martensitic stainless steel. Except for the outer circumferential surface of the piston ring, a nitrided layer having a Vickers hardness of 700 or more is formed on the upper and lower surfaces and inner circumferential surface, a... | 01/21/2003 |
| 6485027 | Surface heat treatment of piston rings A piston ring for use in a piston of an internal combustion engine comprises a base material of a first hardness formed into a ring, and a secondary material of a second hardness formed by selective and superficial heat treatment of an outer portion of th... | 11/26/2002 |
| 6386548 | Dual seal assembly A dual seal assembly for providing a seal between a reciprocating rod and the gland is described. The dual seal includes first and second axially adjacent annular seal elements. The first seal element is constructed of a material having a different hardne... | 05/14/2002 |
| 6279913 | Sliding member and manufacturing method thereof A piston ring is formed over the entire surface with a gas nitrided layer. A diamond-like carbon film is formed in a thickness of 0.5 to 30 micrometers over the gas nitrided layer at the upper and lower surfaces. The diamond-like carbon film has a surface... | 08/28/2001 |
| 6241316 | Apparatus for adjusting the height of a swivel chair Disclosed is a gas cylinder type height-adjusting apparatus of a swivel chair which has a simple structure and thereby can be manufactured at a low cost. In the apparatus, an actuating pin opens an orifice so that working fluid can flow from the first cha... | 06/05/2001 |
| 6209881 | Cast-iron piston ring A cast-iron piston ring for a piston of an internal combustion engine includes a ring composed of cast-iron and having a circumferential surface; a nitrided layer covering the entire circumferential surface of the ring, the nitrided layer including a diff... | 04/03/2001 |
| 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 formed on a third land, which is located below a second ring ha... | 03/27/2001 |
| 6149162 | Sliding member A gas nitrided layer is formed over the entire surface of a piston ring. A physical vapor deposition film of CrN is formed over the gas nitrided layer at the outer circumferential surface. The physical vapor deposition film has oxygen contained in a solid... | 11/21/2000 |
| 6139984 | Sliding member An object of the present invention is to provide a sliding member which is coated a film having superior wear resistance, superior scuffing resistance and a superior property not to increase an amount of wear on an opponent material (an opponent attacking... | 10/31/2000 |
| 6098988 | Mechanism for forming a seal around the shaft of a liquid pump A mechanism for forming a liquid-tight seal around the rotary shaft of a liquid pump having a stationary ring attached to the casing of the pump and a rotating ring attached to the rotary shaft and contacting the stationary ring. The stationary ring is fo... | 08/08/2000 |
| 6048625 | Wear resisting steel, sliding member for cylinder in internal combustion engine, and ring spring Wear resisting steel, a sliding member for a cylinder in an internal combustion engine, and a ring spring consist of: carbon: equal to or less than 2.2% by weight; silicon: equal to or less than 1.2% by weight; manganese: equal to or more than 0.2 % by we... | 04/11/2000 |
| 6013380 | Composite chromium plating film and sliding member covered thereof A piston ring formed with a nitrided layer over all surfaces and formed with a composite chromium plating film over the nitrided layer in the outer circumferential surface. The composite chromium plating film has a network of cracks formed on the outer su... | 01/11/2000 |
| 5960762 | Piston ring and cylinder liner combination An outer circumferential surface of a piston ring is covered with a physical vapor deposition film, chemical vapor deposition film or composite chromium plating film. The physical vapor deposition film or chemical vapor deposition film consists of chromiu... | 10/05/1999 |
| 5743536 | Piston ring A sliding member, in which the surface of a substrate is coated with a compound containing at least chromium nitride, wherein a columnar crystal structure is present in a tension fracture surface of the coating, the columns being aligned toward the coatin... | 04/28/1998 |
| 5660399 | Piston rings particularly suited for use with ceramic matrix composite pistons and cylinders A piston ring for use with ceramic matrix composite engine cylinders. In one embodiment, an extra-hard material is used for a conventional ring design. In another embodiment, a hardened edge employing Tungsten Carbide Cobalt is employed. The same edge tre... | 08/26/1997 |
| 5253877 | Piston ring having tapered outwardly extending wiper A piston head assembly has one, two or more grooves to receive piston rings. One or more of the grooves may receive multiple piston rings. One of the piston rings may have a wiper extension on the lower outside edge of the ring either of metal or elastome... | 10/19/1993 |
| 4299401 | Piston ring and method of making same A piston ring is to be mounted in a groove in a piston. The piston ring has sidewalls for engaging sidewalls of the piston ring groove. Each of the sidewalls of the piston ring is hardened in respective localized areas. The localized areas each include a ... | 11/10/1981 |
| 4147274 | Floating roof tank seal A rim seal is provided for a floating roof tank to fill the space between the floating roof and circumferential wall of the tank. The seal is a compressible toroid of approximately the diameter of the tank and has a cross-sectional diameter greater than t... | 04/03/1979 |
| 4132417 | Pressure responsive sealing means A sealing device such as a piston ring has an L shaped cross section with primary and secondary sealing surfaces held in contact. The device is mounted in a groove to dispose the primary sealing surface against two relatively movable members and the secon... | 01/02/1979 |
| 4122240 | Skin melting A surface treatment for a class of metallic articles is described. The treatment involves the melting of a thin surface layer of the article by a concentrated energy source, within a narrow set of parameters. The melting step is performed in a manner whic... | 10/24/1978 |
| 4000011 | Method of surface hardening A method of surface hardening for forming a hardened layer of cemented carbide, including cementite, on a local surface area of cast iron by rapidly melting the local surface by means of a rapid melting process such as the electron bombardment melting pro... | 12/28/1976 |
