Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7175387 | Seal arrangement for reducing the seal gaps within a rotary flow machine A seal arrangement for reducing the seal gaps within a rotary flow machine, preferably an axial turbomachine, has rotor blades and guide vanes, which are respectively arranged in at least one rotor blade row and guide vane row and have respective blade/vane roots ( | 02/13/2007 |
| 6412822 | Rotary joint A mechanical seal rotary joint of the end-face contact type which permits slurry fluids, such as polishing solution, to pass through a fluid passage without leaking out of the relatively rotating contact area therein. The rotary joint of the present inven... | 07/02/2002 |
| 6391474 | Cylinder liner The invention relates to a cylinder liner made from a hypereutectic aluminum/silicon alloy which is surrounded by a surround casting material, which is characterized in that the minimum ratio of the wall thickness of the surround casting material of the c... | 05/21/2002 |
| 6250643 | Damper plate and method for producing thereof There are disclosed a damper plate for a rotary machine and a method for producing thereof which makes it possible to produce a honeycomb-type damper plate with accurate dimensions and reasonable cost. In the method for producing a damper plate for sealin... | 06/26/2001 |
| 6096181 | Sealing element for a sensor An electrochemical sensor for determining the oxygen content of gases of internal combustion engines includes a ceramic element that is inserted with a sealing ring into a housing. The sealing ring is built up from different metal layers. The arrangement ... | 08/01/2000 |
| 5976695 | Thermally sprayable powder materials having an alloyed metal phase and a solid lubricant ceramic phase and abradable seal assemblies manufactured therefrom Thermally sprayable powders for the formation of abradable seals and abradable seals formed by thermally spraying the powders include an alloyed metal phase material and a solid lubricant ceramic phase material. The alloyed metal phase material includes a... | 11/02/1999 |
| 5921559 | Sealing structure for an airtight chamber A sealing structure for an airtight chamber includes a first division member and a second division member being repeatedly joined and disjoined. The first and second chamber members are joined together to define the chamber between them and disjoined to a... | 07/13/1999 |
| 5795454 | Seal for a sensor element of a gas sensor A seal for a sensor element of a gas sensor for determining the oxygen content in gases including exhaust gases of an internal combustion engine, which seal seals the sensor element in a longitudinal bore of a housing, the seal including a sealing stack w... | 08/18/1998 |
| 5560278 | Hydraulic cylinder with an electrical contacting and sealing ring A coaxial capacitor contacting and sealing structure, for electrical continuity between parts that move in relation to each other at the ends of a cavity within a hydraulic cylinder employing electromagnetic wave position sensing. The structure employs a ... | 10/01/1996 |
| 5538262 | Ultra-high vacuum gasket and vacuum apparatus using the same An ultra-high vacuum gasket formed with a thin film in which a nuclear material is exposed only to a contact surface with a connecting portion of a surface of a ring of a soft nuclear material, and an atmospheric component or constituent is not permeated ... | 07/23/1996 |
| 5374069 | Aluminum core cylinder head gasket for marine engines A cylinder head gasket for use in a marine engine adapted to be cooled by the water in which the engine is running, the engine having a non-ferrous alloy cylinder head and a non-ferrous alloy engine block, both the block and cylinder head preferably being... | 12/20/1994 |
| 5303936 | Seal ring A seal ring for sealing a space formed between a cylinder and a movable member inserted into the cylinder is essentially composed of a seal ring body which is fitted into a groove formed in the inner periphery of the cylinder. The seal ring body is formed... | 04/19/1994 |
| 5034852 | Gasket for a hollow core module A removable gasket for sealing an air-cooled hollow core module to the port of a chassis plenum for supplying cooling air includes an aluminum frame to which a thermally conductive elastomer seal is vulcanized. The gasket frame provides support for the se... | 07/23/1991 |
| 4972764 | Combination of sliding members In a combination of sliding members which are suitable for use in the compressor for an automotive air conditioner, one of the members consists of an aluminum alloy which contains silicone particles consisting solely of eutectic silicon; and the other sli... | 11/27/1990 |
| 4932673 | Emi suppression gasket for millimeter waveguides A one-piece gasket is used between millimeter waveguide sections to prevent energy leakage from the joint. The gasket consists of an electrically conductive elastomeric ring filled with metallic particles, a conformable metallic inner shield on the inner ... | 06/12/1990 |
| 4921260 | Lip seal device for water pumps A lip seal device for use with an automobile water pump having a simple structure and which can be manufactured with a compact size and at a low cost. The lip seal device includes a housing, a rotary shaft rotatably supported in the housing, a case throug... | 05/01/1990 |
| 4878678 | High temperature metallic gasket A metallic gasket for sealing a joint between first and second surfaces subjected to high pressure and high temperature. Other gaskets used to seal such joints are of a fibrous composition held together by a suitable bonding agent and a deformable elastom... | 11/07/1989 |
| 4776602 | Thermally conductive composite gasket A composite gasket is formed of a metal core and includes a compressible composition gasket facing material on both sides of the core. Intermediately of at least one facing and directly against the core is interposed a thermally conductive layer of materi... | 10/11/1988 |
| 4744572 | All-metal, valve sealing mechanism A sealing mechanism capable of use in a valve subject to extended temperatures and pressures. The sealing mechanism comprises a seal ring positioned within a groove circumferential with respect to the passageway of the valve. A convex seating portion of t... | 05/17/1988 |
| 4662643 | Head gasket assembly for closely adjacent cylinder bores and method of making same A head gasket assembly for closely adjacent cylinder bores and method of making the assembly. In the zone of adjacency of the combustion openings in the gasket assembly, part of the gasket body material is absent. Adjacent armoring is joined to form a bri... | 05/05/1987 |
| 4575578 | Radiation shielding and thermally conductive gasket with internal bonding agent A method of making a shielding gasket integral with a surface comprising the steps of (a) preparing a gasket material consisting of a mixture of an elastomer, a conductive filler, a catalyst and a bonding agent; (b) filling a mold with the gasket material... | 03/11/1986 |
| 4544169 | Manufactured precompressed gasket assembly with embedded wire ring and locally densified sheet members A high temperature resistant gasket assembly comprises a metallic sheet member defining a plurality of openings, including at least two bolt holes through which bolts are adapted to pass and at least one high pressure opening for surrounding a high pressu... | 10/01/1985 |
| 4537632 | Spherical aluminum particles in coatings Coating compositions, coatings, coated parts and methods of use of chromate/phosphate type compositions. The coating compositions are of a type which contains small spheroidal aluminum particles having a defined size. The coated materials of the invention... | 08/27/1985 |
| 4477085 | Fire resistant connections embodying heat transfer means A fire resistant connection (16) having heat transfer means (46) cooperatively associated therewith and that embodies a U-like sealing means (44). The fire resistant connection (16) with heat transfer means (46) is operative for purposes of effectuating t... | 10/16/1984 |
| 4433845 | Insulated honeycomb seal The application discloses the manufacture of a seal for a row of turbine blades in which the seal is a honeycmb seal and a layer of insulation is positioned in the cells of the honeycomb by flame spraying. A process for accomplishing the deposition of the... | 02/28/1984 |
| 4423097 | Abradable seal and its method of production A seal intended to wear from abrasion for use in contact with a rotor zone of a rotating machine, of the type made up of a dispersion of hollow microspheres in a binder providing cohesion of the microspheres among themselves and their attachment to a meta... | 12/27/1983 |
| 4365815 | Means providing coolant between elements of radial face seals For cooling the working face of mechanical working elements, such as bearings, rotary seals and friction devices, the cooling fluid flows through a passage which is located behind the working face and contains a porous thermally-conductive mass having int... | 12/28/1982 |
| 4323257 | Piston ring with a Cr-C-Fe inlaid ring in its outer surface, and a method of making it A piston ring preform is formed with a groove dividing its cylindrical outer surface, and this groove is filled up by plasma-spraying with a deposit of alloy whose surface is flush with the cylindrical outer surface of the preform not deposited with alloy... | 04/06/1982 |
| 4302018 | Packer arrangements for oil wells and the like The packer includes an elongated tubular casing, and a metal ring is disposed in its entirety within an annular recess in the casing. The recess has a circumferential opening extending entirely around the peripheral outer surface of the casing. Hydraulic ... | 11/24/1981 |
| 4273824 | Ceramic faced structures and methods for manufacture thereof A method of adhering a ceramic facing material to an underlying substrate is disclosed. Substrates to which the concepts apply include unsupported low modulus, porous wire pads as well as low modulus, porous wire pads backed by a solid metallic form. The ... | 06/16/1981 |
| 4261584 | Hermetic seal A hermetic seal is provided between opposing surfaces of a two part housing containing highly permeable fluids. A three element seal, located between the surfaces to be sealed, consists of a spring metal C-ring having a ductile metal coating on at least t... | 04/14/1981 |
| 4261583 | Unitary rod gland assembly A rod gland assembly comprising a rod gland core made from a rigid material and adapted to be positioned in a cylinder, between the cylinder bore and a piston rod, and a multiple function seal/wiper/piston cushion element molded from a flexible material o... | 04/14/1981 |
| 4247249 | Turbine engine shroud High temperature resistant turbine engine shrouds are formed of an amphoteric refractory oxide, a phosphate binding agent and optionally a stabilizer, reinforcement and/or porosity controller.... | 01/27/1981 |
| 4218066 | Rotary seal Apparatus for impeding the leakage of a gaseous medium between the rotating and stationary components of a machine is disclosed. Various construction details which are specifically adapted for use in gas turbine engines are developed. Wide channel type se... | 08/19/1980 |
| 4203607 | High pressure, fluid tight seal A system for effecting a fluid tight seal between two surfaces where one of the surfaces has an annular recess for receiving an annular sealing element which typically is an elastomeric sealing element. The sealing element is compressed when disposed betw... | 05/20/1980 |
| 4192519 | High pressure multi-purpose seal A high pressure multi-purpose seal for use with pressure vessels and other equipment requiring demountable access fittings withstands pressures thousands of times above atmospheric pressure at both cryogenic and elevated temperatures. The cryogenic high p... | 03/11/1980 |
| 4168837 | Shaft seal with scraper An annular scraper and a shaft seal including a scraper and a method for making the same. The seal and scraper are of bonded construction. The seal includes an outer shell such as a stainless steel capsule, a polytetrafluoroethylene sealing element, a bra... | 09/25/1979 |
| 4160551 | Seal assembly There is disclosed a seal assembly comprising alternate, generally "V"-shaped layers of graphite and a spring metal which are nested one within the other for sealing between the relatively movable, generally coaxial cylindrical surfaces of an annular rece... | 07/10/1979 |
| 4156529 | Stuffing box seal for fittings The stuffing box chamber in a fitting, particularly a valve, contains a deformable stuffing box seal. The seal includes conventional sealing material and a constituent material such as zinc or aluminum having a standard potential that is less positive in ... | 05/29/1979 |
| 4139376 | Abradable seal material and composition thereof An abradable seal material suitable for high temperature application in turbomachinery comprising a sintered mat of (1) randomly disposed fine metal fibers, or (2) fine metal powders or (3) both fibers and powders. The metal fiber and powder are composed ... | 02/13/1979 |
