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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 7448631 | Braiding yarn made of expanded graphite, and gland packing In a braiding yarn made of expanded graphite 1, a reinforcing wire member 3 made of a stainless steel wire which is easily plastically deformed, and having a diameter of 0.05 to 0.2 mm is spirally wound around the outer periphery of a twisted expanded ... | 11/11/2008 |
| 7353645 | Material for gland packing and the gland packing A reinforcing member made from a fibrous material and disposed at least on one face of a strip-like expanded graphite to form a strip-like base member. The base member is stranded to be formed as a cord-like member. At this time, one side end edge of the base member... | 04/08/2008 |
| 7270875 | Gland packing A gland packing characterized in that a water swelling mineral is stuck or impregnated into a surface or an inner part of a gland packing base material. The water swelling mineral is preferably water swelling mica. This gland packing substantially eliminates seizing... | 09/18/2007 |
| 7255353 | Flexible graphite sealing joint with metal jacket for high temperature The seal can be used at high temperature. It is composed of a central flexible graphite core (10) maintained in its shape by two metal cups (12) that do not touch. It is all surrounded by a tight sheath (15) enabling the flexible core (10... | 08/14/2007 |
| 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 |
| 7155892 | Material for gland packing and the gland packing A gland packing including strip-like expanded graphite is disposed on one face of a sheet-like reinforcing member configured by a fibrous material to form a strip-like base member. The base member is stranded to be formed as a cord-like member. The outside of the co... | 01/02/2007 |
| 7140171 | Material for gland packing and the gland packing A material for gland packing including a sheet-like reinforcing member configured by a fibrous material disposed at least on one face of a strip-like expanded graphite to form a strip-like base member. The base member is stranded to be formed as a cord-like member. ... | 11/28/2006 |
| 7086650 | Gland packing The present invention provides a gland packing in which impairment of the sealing performance due to cracks that unwillingly occur in an end portion in the width direction of an expanded graphite tape of a braiding yarn in the gland packing can be suppressed. In gla... | 08/08/2006 |
| 7021632 | Self-energized gasket and manufacturing method therefor A secondary seal gasket is formed of a graphite material for higher temperature applications. The gasket is formed by multiple wraps of a graphite ribbon and then is shaped in a mold to provide a U-shaped cross-sectional configuration having a self-energizing spring... | 04/04/2006 |
| 6572117 | Gland packing The present invention provides a gland packing in which a phenomenon where reinforcing fibers protruding from ends of adjacent braiding yarns overlap with each other, and the over-lapping reinforcing fibers are interposed over the whole range between expa... | 06/03/2003 |
| 6568689 | Gland packing The present invention provides a gland packing in which impairment of the sealing performance due to cracks that unwillingly occur in an end portion in the width direction of an expanded graphite tape of a braiding yarn in the gland packing can be suppres... | 05/27/2003 |
| 6547256 | Cloth ring seal A seal assembly including a low flow cloth ring seal having a cloth assemblage is provided for sealing a tubular cavity disposed between a tubular member and a mating body. The density of the cloth assemblage may be set according to a desired flow rate of... | 04/15/2003 |
| 6446979 | Rocket motor joint construction including thermal barrier A thermal barrier for extremely high temperature applications consists of a carbon fiber core and one or more layers of braided carbon fibers surrounding the core. The thermal barrier is preferably a large diameter ring, having a relatively small cross-se... | 09/10/2002 |
| 6270083 | Packing yarn made of graphite foil and plastic foil and method of manufacturing a packing yarn A packing yarn and a method of manufacturing a packing yarn utilize at least two bands that are at most 5 mm wide and are joined together by a yarn manufacturing method. The bands are formed of a laminate having at least one layer of flexible graphite foi... | 08/07/2001 |
| 6234490 | Leakfree pumpback packing A mechanical packing braided such that a number of angled recesses or projections at predetermined intervals are formed in the surface of the braid adjacent a rotating shaft, the recesses or projections causing a deflecting hydrodynamic force on the fluid... | 05/22/2001 |
| 6182974 | Stuffing box packing assembly Compact stuffing box packing assemblies of the present application include high density metal inserted braided end rings of graphite which have each been die formed to have angled facing surfaces and a plurality of center Preform rings is disclosed In one... | 02/06/2001 |
| 6171070 | High-pressure reciprocating pumps A high-pressure reciprocating pump is constructed such that a plurality of plungers connected to a driver are made to move back and forth and intake channels or discharge channels are opened and closed by valves in synchronism with movements of the plunge... | 01/09/2001 |
| 5806858 | Compact five ring stuffing box packing assembly The compact five ring stuffing box packing assembly includes high density metal inserted braided end rings of graphite which have each been die formed to have angled facing surfaces. Three low density graphite preform rings having angled facing surfaces a... | 09/15/1998 |
| 5791657 | Seals containing composite non-extrusion springs A wellhead seal assembly for sealing between first and second pipe members comprises an annular elastomeric body having, in cross-section, a generally rectangular shape comprising a first flat radial surface, a second flat radial surface, an inner circumf... | 08/11/1998 |
| 5716055 | Method of making packing material having expanded graphite dispersed throughout A minimum leakage packing system is provided for sealing pump shafts and the like. The packing is manufactured from twisted, exfoliated extruded, pultruded or slit graphite material that is braided, twisted, laid up or otherwise combined to form mechanica... | 02/10/1998 |
| 5687974 | Packing material having expanded graphite dispersed throughout A minimum leakage packing system is provided for sealing pump shafts and the like. The packing is manufactured from twisted, exfoliated extruded, pultruded or slit graphite material that is braided, twisted, laid up or otherwise combined to form mechanica... | 11/18/1997 |
| 5615896 | Rubber encapsulated vee ring seal A seal ring and a stack of seal are disclosed wherein each seal has a knitted mesh section substantially surrounded by an outer coating covering substantially all of the knitted wire mesh section, the coating forming raised sealing surfaces to form interf... | 04/01/1997 |
| 5549306 | Knitting yarn for gland packing and gland packing made of said knitting yarn A knitting yarn for gland packing according to the present invention has a composite structure comprising: a string-like body formed by folding an expanded graphite tape in the widthwise direction thereof, thus forming folded layers; a first reinforcing m... | 08/27/1996 |
| 5499827 | Seal for shafts and valve stems A packing material having a resilient core and a uniform non-seamed exterior surface comprising a plurality of discrete compressible particles attached to the flexible core and to each other, the particles being compressed after attachment. The method com... | 03/19/1996 |
| 5419568 | Method and apparatus for reducing packing ring spin for trapezoidally shaped mechanically braided packing A system for reducing packing ring spin and opening up of the joints formed by the ends of a packing ring during break-in of trapezoidally-shaped mechanical braided packing involves utilization of additional warp yarns within the sides of the packing. The... | 05/30/1995 |
| 5370405 | Packing A packing for hermetically sealing a member. The packing in accordance with the present invention comprises braiding yarns each of which includes a plurality of longitudinally arranged reinforcing fiber yarns and expanded graphite integrally bonded to at ... | 12/06/1994 |
| 5339520 | Braided high-temperature packing A high temperature, high pressure resistant packing (e.g., for the packing gland of a valve stem) has a core of density 1.3-1.6 gm/cc that includes a plurality of strands, each strand including a flexible graphite tape, longitudinally corrugated and folde... | 08/23/1994 |
| 5301960 | Improved spirally-formed seal for shafts and valve stems A packing material for formation of a seal for a rotary or reciprocating shaft is disclosed wherein a core element is enveloped by a sheet of expanded graphite material. The core element is preferably formed of a wire mesh and solid graphite. The envelopi... | 04/12/1994 |
| 5240769 | Packing material and packing made of the same This invention relates to a packing used in sealing two members. As the packing material, by using a material having the surface of a flexible graphite sheet cut to a width of less than 5 mm with fibers, or a material prepared by laminating a flexible gra... | 08/31/1993 |
| 5225262 | Braided high-temperature packing comprising a core of folded flexible graphite sheet A high temperature, high pressure resistant packing (e.g., for the packing gland of a valve stem) has a core of density 1.3-1.6 gm/cc that includes a plurality of strands, each strand including a flexible graphite tape, longitudinally corrugated and folde... | 07/06/1993 |
| 5135240 | Mechanically-bonded, monolithic sealing ring for stuffing box including axially central portion made of compressed flexible foamed graphite tape A mechanically-bonded, monolithic sealing ring is provided for a stuffing box of a high temperature, high pressure valve or pump. In this ring, the components are pre-united by axially squeezing together originally separate center and end rings in a die a... | 08/04/1992 |
| 5134030 | Packing material and packing made of the same This invention relates to a packing used in sealing two members. As the packing material, by using a material having the surface of a flexible graphite sheet cut to a width of less than 5 mm with fibers, or a material prepared by laminating a flexible gra... | 07/28/1992 |
| 5050298 | Method of manufacturing a mechanically-bonded, monolithic sealing ring for stuffing box including axially central portion made of compressed flexible foamed graphite tape A mechanically-bonded, monolithic sealing ring is provided for a stuffing box of a high temperature, high pressure valve or pump. In this ring, the components are pre-united by axially squeezing together originally separate center and end rings in a die a... | 09/24/1991 |
| 4949620 | Edge-reinforced packing for use in steam service Edge-reinforced packing is provided for steam service, with wire-reinforced secondary yarns on carriers driven along one or more diagonal tracks of a braiding machine to provide edge-reinforcing which reduces valve stem abrasion while providing sufficient... | 08/21/1990 |
| 4795170 | Packing arrangement for sealing the surface of a rotary drum like object A packing arrangement for sealing the outer surface of a rotary, drum-like object, such as a washer used in manufacturing cellulose, with a non-rotating annular packing, which is most advantageously composed of one or several side-by-side packing fillets,... | 01/03/1989 |
| 4705722 | Gland packing A gland packing having increased compressibility, increased allowable limit of twist, increased tensile strength, and excellent serviceability and versatility characteristics is disclosed which comprises a plurality of flexible graphite sheets cut to a wi... | 11/10/1987 |
| 4667969 | Packing materials for shaft seals A packing material for shaft seals includes a resilient and flexible core of longitudinally braided yarns of discrete filaments, the core having been compressed into the form of a cylinder of substantially rectangular cross-section and in which the yarns ... | 05/26/1987 |
| 4559862 | Packing material A packing material comprises glass or other inorganic fibers in combination with organic fibers such as sintered polytetrafluoroethylene (TFE) or other selected fibers with or without an impregnant, a preferred impregnant being a lubricant with a binder. ... | 12/24/1985 |
| 4559248 | Sliding member A sliding member is disclosed wherein a sheet-like heat resistant material comprising expanded graphite, mica, etc. singularly or in combination, and a reinforcing material comprising either a combination of a mesh made of metal fine wires with a mesh mad... | 12/17/1985 |
| 4559249 | Sliding member and a method for manufacturing the same A sliding member is provided which comprises a base body made of a firmly entangled and collapsed metal fine wire, with the voids formed between the metal fine wires constituting the metal mesh being filled compactly with a heat resistant material, the sl... | 12/17/1985 |
