Abstract: An encapsulated measuring system includes a follower coupled to a scanning unit which extends through a slit in a housing of the measuring system. This slit is sealed against lubricants and coolants by a pair of multipart sealing elements. Each multipart sealing element includes a sealing profile proper, along with a supporting element. The sealing profiles perform the sealing function, and the supporting elements provide the necessary permanent elasticity and stability of form. Because of this division of function, the sealing profiles themselves can be made of materials that are resistant to aggressive media such as lubricants and coolants, but themselves do not provide sufficient elasticity or stability of form to be used alone.

Abstract: A draftsman's stippling device, small enough to be manually held during use, includes a vibratable cantelever bar supported in a small housing and having a free end projecting to the outside on which end a stippling pen is mounted. A cam disk having lobes about its periphery is adapted to be rotated by means of a battery powered mini-motor and reduction gearing at high speed against the upper surface of the bar. The lobes on the spinning cam disk successively depress the bar against the opposing tension of a return spring, whereby the bar and pen rapidly vibrate as a unit to enable stippling of a drawing surface disposed below the pen.

Abstract: A liquid sealed shaft seal for a rotatable shaft comprises a housing disposed around the shaft and defining a seal chamber which can be supplied with sealing liquid. A seal disc is fixed to the shaft and extends into the chamber. An axially movable piston is mounted on the housing for axial movement toward and away from a side face of the seal disc. The piston is provided with a slide ring which engages the slide disc when the shaft is at a standstill and which, through a circumferentially induced increase in pressure for the sealing liquid in the chamber, is moved axially away from the disc when the shaft and disc rotate. A resilient bellows is connected between the piston and the housing for biasing the piston toward the disc.

Abstract: An annular gasket is provided to provide a leak proof seal between the surface of an opening through the wall of a manhole and the outer surface of a pipe which passes through said opening. The gasket is made of elastomeric material and has a cross-section defining a radially outward T-shape portion embedded in the concrete of the manhole wall around the opening. The gasket further includes a radially inner enlargement tapering radially inwardly and terminated by a laterally directed lip. The enlargement and lip are flexed by the pipe inserted through the opening with the maximum thickness of the enlargement forming a sealing ridge contacting the pipe in a first zone and with the lip also contacting the pipe in a second zone with a void between the first and second zones.

Abstract: Sealing and bearing means by use of ferrofluid, in which a magnet is utilized effectively in cooperation with grooves engraved on one surface thereof, the grooves having the function for generating the dynamic pressure of the ferrofluid. The ferrofluid is retained in a gap between a rotary shaft and a magnet of cylindrical or disc type enclosing the rotary shaft concentrically. The magnet performs excellent two functions of bearing and sealing respectively.

Abstract: An improved elastomeric seal for preventing both low or high pressure fluid from escaping past a rotatable valve stem or similar shaft. The annular seal comprises an outer generally envelope-shaped first plastic member for sealing engagement with the rotatable stem and valve bonnet, and an inner second plastic member substantially encapsulated by the first member. The annular legs of the envelope-shaped member are positioned downstream from fluid pressure, thereby sealing the inner second member from fluid attack. Novel techniques are employed for forming the elastomeric seal outside the valve bonnet by applying a substantial radially-directed force for deforming the first plastic member into the envelope configuration, while deforming the inner plastic member into an elliptical configuration. The seal in the substantially deformed configuration is then assembled within the bonnet cavity while preventing radial expansion of the envelope-shaped member.

Abstract: An oil pan cover or the like and gasket assembly for juxtaposition with a member to be sealed thereby, the cover providing a surface defining a sealing flange adapted to confront the surface of a member to be sealed, the flange surface defining an elongated groove for receiving the gasket assembly. The groove is T-shaped and includes a first internal groove section and a second wider groove section intersecting the surface of the flange. The gasket assembly is T-shaped and has an elongated body generally complementary in configuration to the groove, and includes a first elongated elastomeric sealing section adapted to be positioned and compressed between the wider groove section and the member to provide a seal therebetween, and a second elastomeric rigidifying bead, the sealing section and the bead being integrally molded, and a reinforcing wire fast with the rigidifying bead to rigidify the elongated body.

Abstract: A seal for roller bearings having inner and outer rings, especially for bearings in electrical machines, comprising at least two sealing disks spaced a certain distance apart on one or both sides of the rolling elements between the rings, one of said sealing disks being attached to one of the bearing rings and with its free end engaging in an annular groove in the other bearing ring, and where the gap between the disks is sealed by flock fibers, characterized in that the one sealing disk, on its free edge near the annular groove, has flock fibers projecting perpendicularly from its surfaces, which fibers are arranged to make slight frictional contact with the surfaces of the annular groove and with the opposite lateral surface of the other sealing disk said other sealing disk being slotted and nonrotatably mounted in the annular groove and having, on the lateral surface facing the sealing disk, a layer of flock fibers, the free ends of which are in contact with the sheet metal part of the sealing disk.

Abstract: A seal between two machine parts for sealing separate spaces at different pressure from each other comprising a brush seal extending at an acute angle to a principal axis of at least one machine part for use in spatially constricted constructions with small clearances, particularly fluid-flow engines such as airplane jet engines, for sealing rotating or stationary parts.

Abstract: A seal for a shaft relatively rotatable in an opening in a structure has concentric inner and outer rings. The outer ring is fixed across the opening and has an inwardly-open groove with axial boundary surfaces which converge toward each other outwardly from the axis of the rings. The inner ring is elastic and has two flanges flanking a midsection which receives the shaft for relative rotation therewith. The flanges slidingly bear elastically on the boundary surfaces to produce the seal. The midsection of the inner ring has a larger outside diameter than the inside diameter of the outer ring to prevent extruding the inner ring from the outer ring under rotation or a pressure differential across the seal.

Abstract: A peripheral seal for an orifice disc in an orifice fitting. The peripheral seal is made of two seal rings both of hard polymeric material with a high elastic modulus. An outer seal ring has a deep recess to receive both the orifice disc and the inner seal ring. The seal rings form a seal around the orifice disc and an annular carrier containing it, as well as with each other, but they are sufficiently hard material that they will not swell or distort under high pressures and/or high temperatures.

Abstract: A sealing device for providing the upstream/downstream sealing of a valve comprising a valving member movable inside the bore of a tubular body and comprising at its periphery a sealing surface coming to bear on a sealing packing mounted in the body at the end of the valving stroke. This sealing packing comprises a dynamic annular sealing element and a coronal metal membrane, whose outer edge portion has flat radial part applied axially against a steep side of a shoulder in the bore of the body, for providing static sealing therewith.

Abstract: A ring seal comprising a main body member having a U-shape cup recess opening on one side, usually having a U-shape metal spring located therein, and a hat ring with a solid projection fitting into the U-shape cup recess opening and having its opposite face being flat and normal to the ring axis. A back up ring adjacent the heel of the main body ring can be provided. An assembly of such ring seals can be stacked heel-to-heel; hat-ring-to-hat-ring or heel-to-hat-ring.

Abstract: A slip joint seal assembly includes an elastomeric sealing body and an annular metallic cage circumferentially supporting the body. The assembly also includes a relubrication chamber. An auxiliary sealing lip on the elastomeric sealing body is normally out of contact with a shaft, but engages the shaft upon pressurization of the relubrication chamber to prevent lubrication from flowing toward primary sealing lips on the sealing body during relubrication. In a preferred form, the elastomeric sealing body includes a pair of sealing lips disposed for making angular contact with the shaft, while the auxiliary lip is also angularly disposed with respect to the shaft but in an axially opposite direction. In an alternate preferred form, an annular ring provides a reduction in volume of the relubrication chamber between the cage and shaft to enhance pressurization characteristics of the chamber.

Abstract: Seal structure for positioning between two members disposed for sliding relative movement includes a band component that is adapted to be carried by one member and that has a front surface for engagement with the other member and a backup component that is seated in slidable relation on a rear surface of the band component. A seal surface is defined between two pressure distribution regions formed in the front surface of the band component, and the backup component is located in general alignment with the seal surface and provides pressure compensation at the seal interface between the seal surface and the juxtaposed surface of the other member.

Abstract: Graphite gaskets with an improved release characteristic are embossed to form a relief pattern of relatively raised areas surrounded by predominantly interconnected depressions, followed by coating with a silicone rubber.

Abstract: A sealing ring for sealing about a relatively-rotatable member is an annular, disk-like ring having a root surface about one edge which is adjacent a flarable, sealing-surface zone for slidingly engaging the member. Torsion ribs project from the root surface. The inside surfaces of the torsion ribs are regular prolongations of the sealing surface and the distance therefrom to opposite, outside surfaces diminishes, preferably continuously to a knife-like edge where the inside and outside surfaces meet. The result peels liquid to be sealed in from the relatively-rotating member so that it does not destructively deform the torsion ribs even at high speeds of relative rotation.

Abstract: A cylinder head gasket arranged between a cylinder head and a cylinder block in an internal combustion engine. The cylinder head gasket has a core web of steel with hooks arranged between facing sides of a pair of gasket plates made of a heat resistant resilient material, such as asbestos or graphite. Grommet rings are fitted to edges of openings in the web and the gasket plates aligned corresponding to the respective cylinder bores. The web has regions adjacent to the inner periphery of the aligned openings and located substantially inside of the grommet member rings, the regions containing no hooks, or containing hooks having a reduced height.

Abstract: A slide ring seal for sealing a machine component relative to a pressurized media. A slide ring is provided which is axially slidably mountable on the machine component. A bellows is arranged for surrounding an axial portion of the machine component. The bellows has one axial end connected with the slide ring and a second axial end. The bellows includes a sealing member at the second axial end for sealing the machine component with respect to the pressurized media. The bellows has a region between the slide ring and the sealing member which, in a relaxed state of the bellows, has a shape approximately corresponding to the contour of the region that will develop when the bellows is subjected to operating pressures in an installed state of the slide ring seal. A compression spring is arranged to be concentrically mounted on the machine component with respect to the slide ring and the bellows and is disposed between the slide ring and the sealing member.

Abstract: A seal arrangement for retaining liquid in a chamber at a level above some of the sides of the chamber includes two pairs of rollers. The rollers of each pair contact one another at a height above the low sides of the chamber. The rollers in each pair are arranged at different levels so that the rollers contact one another at a point higher than the height of the low sides of the chamber. Flexible seal members extend from the bottom of the chamber to a point above the center of each of the bottom rollers. Pressure of liquid in the chamber biases the flexible seal members against the rollers to prevent liquid from leaking along the bottom of the rollers. Restrictions in the outlets of the chamber establish the liquid level at a height which is above the contact point of the pairs of rollers so that both sides of a strip of material passing between the pairs of rollers are washed with the liquid.