Abstract: A CRT display device having a cathode ray tube for displaying an image, includes a front case having plural fixing bosses for mounting the cathode ray tube therein and four sides defining a display area; a deflection preventing rib, formed on each side of the front case, for minimizing a gap between the cathode ray tube and the front case; and a CRT chassis for fixing the cathode ray tube to the fixing bosses. Each deflection rib is made up of a first portion for receiving a pressing force from the installation of the cathode ray tube and a second portion for generating a reaction force against the front surface of the cathode ray tube. The first and second portions forming a profile comparable to the outer surface of the cathode ray tube.

Abstract: A one-piece, reusable hub seal unit for heavy duty axles and the like. The unit includes a stiff but flexible casing covered with an elastomeric portion. The casing has a radial flange, a slightly axially inclined sleeve portion, and a purely axial portion ending in a free edge. The elastomeric covering is thin adjacent the free edge, gradually increases in thickness throughout the slightly inclined axial extent and finally contains a radial section covering the flange and having two or more sealing ribs. A cover holds the seal unit in place when it seals snugly in the counterbore. When the cover is removed, the seal may be removed by hand from the counterbore.

Abstract: An improved seal for a hydrodynamic bearing which aids in making the bearing less sensitive to changes in load and rotational speed, which is especially useful in hydrodynamic bearing motor in which the bearing is open at both the upper and lower ends. Additionally, a hydrodynamic bearing open at both ends in which the balance of fluid flow or pressure within the total system is maintained, and a seal usable to make a hydrodynamic bearing which is as stiff or stiffer than known standard spindle motors with hydrodynamic bearings which are supported only at one end. Also, a pumping seal useful in a hydrodynamic bearing design to maintain balanced internal fluid pressures during operation to minimize the likelihood of any lubricating fluid being lost during operation is disclosed.

Abstract: A high pressure boundary seal adjacent at least one of the bearings of the spindle motor. The motor itself includes a shaft, typically a fixed shaft and a rotor supported by bearings and rotating outside the shaft. The high-pressure boundary seal comprises a ring which surrounds the shaft across a small gap and is supported from and rotates with the rotor or hub. In a first embodiment, a herringbone pattern is defined on the inner surface of the ring or the outer surface of the shaft. The upper and lower sections of the herringbone pattern are substantially equal so that a zone of high pressure is established at about the center of the pattern. This high pressure boundary zone prevents the flow of any contaminants from the interior of the motor or the bearing between the shaft and the sealing ring out into the interior section of the disc drive housing where they could potentially contaminate the disc.

Abstract: 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 solution state in a crystal structure of CrN in a content of 0.5 to 20 percent by weight, pores dispersed at a rate of 1 to 15 percent within the film and a crystal structure of CrN with a preferred orientation (200) parallel to the surface being covered. The Vicker's hardness of the film is within a range of 1000 to 1800. The physical vapor deposition film of CrN can be formed beneath a wear resistant film covering the outer circumferential surface of the piston ring. The wear resistant film is for instance, a physical vapor deposition film of chromium nitride such as CrN or Cr.sub.2 N.

Abstract: A piston ring is formed over the entire surface with a gas nitrided layer and a hard film with a thickness of 0.5 to 30 micrometers on the gas nitrided layer at the upper and lower surfaces. The hard film comprises diamond-like carbon in which are dispersed one or more elements selected from the group consisting of silicon, titanium, tungsten, chromium, molybdenum, niobium, and vanadium. The diamond-like carbon is configured with any one of an amorphous carbon structure, an amorphous carbon structure having partly a diamond structure, or an amorphous carbon structure having partly a graphite structure. The content of the above elements is 5 to 40 atomic percent, and the hard film has a Vicker's hardness in a range from 700 to 2,000. The hard film may be formed directly on the upper and lower surfaces of the piston ring in a thickness from 0.

Abstract: A contacting mechanical end face seal for use in applications having slow shaft rotational speeds, such as mixers, agitators and reactors, includes at least one seal ring having a face with spiral grooves. Both hydrostatic and hydrodynamic lift characteristics in the seal are utilized to generate and maintain a seal gap having sufficient stiffness to prevent contact of the seal ring faces during operation. Specific characteristics, or combinations of them, include a land to groove ratio between 0.2-0.9, tapered groove surfaces which are inclined from the O.D. toward the dam, groove area to land area ratios greater than 1.5, a stepped groove having a greater depth at the O.D. relative to the depth adjacent the dam, alternating deep and shallow grooves, and groove area to dam area ratio in the interface greater than 1.2.

Abstract: A two-piece labyrinth seal adapted to be easily and quickly mounted upon a shaft within a housing to minimize downtime of the equipment. The seal is formed of a rotor and a stator. The rotor and the stator are each formed of two relatively equal portions. The rotor portions and the stator portions each mate at an interface. The interface is generally along an axial plane and crosses the plane at least twice within the rotor and within the stator. The rotor is interlocked with the stator. The rotor and stator portions are mechanically connected.

Abstract: A piston ring is formed over the entire surface with a gas nitrided layer and a hard film with a thickness of 0.5 to 10 micrometers on the gas nitrided layer at the outer circumferential surface. The hard film comprises diamond-like carbon in which are dispersed carbides of one or more elements selected from the group consisting of silicon, titanium, tungsten, chromium, molybdenum, niobium, and vanadium. The diamond-like carbon is configured with any one of an amorphous carbon structure, an amorphous carbon structure having partly a diamond structure, or an amorphous carbon structure having partly a graphite structure. The content of the above elements is 5 to 40 atomic percent, and the hard film has a Vicker's hardness in a range from 700 to 2,000. A chromium plating film or ion plating film may be used instead of the gas nitrided layer.

Abstract: A seal for hydraulically sealing a piston rod (1) that travels axially into and out of a holder, preferably a hydraulic shock absorber. A sealing component (11) of elastic plastic has one edge (12) resting against the piston rod, tensioned over an elastomeric component, and accommodated along with that component in a sealing chamber (10). The object is to simplify the seal, reduce friction, and ensure that it will work even at very low temperatures. The tension is accordingly generated by two rings (13 & 14) of packing cord positioned diagonally opposite each other in the cross-section of the chamber. The rings, as long as they are not tensioned against each other, against the inner surface of the chamber, and against the back (15) of the sealing component, occupy most of the space inside the chamber.

Abstract: Disclosed is a cylinder head gasket which comprises: plural thin metal plates each having at least cylinder bores and fluid-passing bores being laminated to constitute laminated thin plates; the surfaces of the outermost thin plates of the laminated thin plates being coated with a composite material, respectively; and the surface of at least one of the thin plates adjacent to each other of the laminated thin plates being coated with the composite material to form a coating layer, whereby the adjacent thin plates are laminated with the coating layer sandwiched therebetween.

Abstract: In this metal gasket, the stopper plate stacked on the bead base plates has its reduced thickness portionwhose thickness is smaller than the thickness of the stopper plate body-folded back to form a stopper portion. This structure provides the stopper portion with a limited stopper function with fewer parts. Between a pair of bead base plates that seal around the bore holes of the metal gasket is clamped an intermediate plate as the stopper plate. Around the bore holes in the intermediate plate are arranged folded portions, whose total thickness is larger than the thickness of the stopper plate body, to restrict the deformation of the beads. The folded portions are formed by folding back fold parts onto base parts that are thinner than the stopper plate body. This structure can limit the step height (stopper height) of the intermediate plate without using other parts such as metal plates or stopper pieces.

Abstract: A pipe fitting for pipelines comprises at least one seating (12) for receiving the end of a pipe to be coupled. The seating surface which is intended to come into contact with the surface of the pipe end, is made of a material having a chemical adhesion reaction on reaching of a predetermined temperature and, around the seating (12), the pipe fitting incorporates an electric winding (14) for heating of the material when an electric current passes therethrough in order that said predetermined temperature can be reached. Advantageously, the seating (12) is formed in a sleeve (17) incorporating the electric winding (14) which in turn is incorporated into the pipe fitting body.

Abstract: An improved sealing cartridge for use in a reciprocating plunger pump which includes a low pressure seal, a vacuum seal, and an oil seal within a unitized cartridge assembly to facilitate servicing and/or replacing the various seals with minimal effort and which provides improved sealing characteristics to prevent the unwanted migration of oil, fluid, and air during both priming and normal operating conditions.

Abstract: A metal cylinder head gasket of the invention is used for an internal combustion engine. The gasket is basically formed of a metal plate, a sealing device, and a thin support portion. The metal plate includes a plurality of first holes corresponding to cylinder bores, at least one second hole corresponding to another hole, and a side portion around the second hole. The sealing device is disposed on the metal plate outside the side portion relative to the second hole, and surrounds the second hole for sealing the same. The thin support portion is located inside the sealing device and is disposed on a part of the side portion around the second hole without extending the entire side portion. The support portion supports a part of a pressure applied thereto to securely seal around the second hole.

Abstract: The present invention provides an improved seal cage which is useful, for example, for injectable sealing compound systems. In preferred embodiments the dimensions of the seal cage can be adjusted for use of the seal cage with shafts of different diameters and stuffing boxes of varying depths.

Abstract: A hydrodynamically lubricated interference type rotary shaft seal suitable for environmental exclusion and high pressure lubricant retention which incorporates composite multiple modulus construction and a non-planar flexible environmental edge heel geometry which cooperate to resist high pressure extrusion damage while minimizing interfacial contact pressure and accommodating radial shaft motion.

Abstract: A resilient static seal for sealing the closure on a pressure vessel. The seal is provided with a curved cross section with the convex side of the curve exposed to the higher pressure which may exist within the interior or exterior of the pressure vessel. The seal is also provided with opposed inwardly curved side edges which engage the side walls and a bottom wall of a vessel closure seal groove in which the continuous seal is seated.

Abstract: A wiper seal is disclosed which includes an elastomeric member having a metal support member adhesively bonded thereto. The elastomeric member has a first substantially flat surface that is perpendicular to a reference axis of the wiper seal, an outer peripheral surface that is substantially parallel with the reference axis, and an inner peripheral surface that forms an acute angle with the reference axis. The metal support member has a first leg portion that coincides with the outer peripheral surface and a second leg portion that coincides with the substantially flat perpendicular surface. The intersection of the first and second leg portions forms a generally sharp corner or at least a predetermined minimum radius size. When the wiper seal is installed in a recess of a housing, the substantially flat perpendicular surface is generally flush with the surface of the housing adjacent the recess to substantially eliminate recesses or pockets that could retain dirt and/or other contaminants.

Abstract: A personal convenience unit for use with a gaming machine provides various compartments and amenities that enhance the comfort and convenience of the gaming machine for a patron, thereby enabling and encouraging longer periods of play and greater customer loyalty. The personal convenience unit includes a base unit with at least one interior compartment that is separate from the interior portions of the gaming machine and which is lockable by the patron for securing personal items of the patron. The base unit may have a portion upon which the gaming machine rests, and a portion that extends on the side of the gaming machine. The personal convenience unit includes a personal amenity cabinet, preferably on the side of the gaming machine, which includes an open and recessed compartment to provide convenient access to and concealment of other personal items such as coin cups and the like.