Abstract: The invention provides a novel gasket for electric shielding composed of an electrically insulating rubbery elastic material as the continuum or matrix and a conductive phase dispersed therein. Different from conventional gaskets for electric shielding in which conductive filaments or particles form the dispersed phase, the inventive gasket for electric shielding comprises flakes of a conductive material as the dispersed phase in the matrix and the flakes are in orientation in such a manner that the flat surfaces of them lie substantially perpendicularly to the contacting surfaces of the gasket. Owing to this unique internal structure, the inventive gasket for electric shielding is very efficient in absorbing the energy of the electric fields or electromagnetic waves.

Abstract: A hydrodynamic shaft seal for use under both static and dynamic conditions features a sealing face having one static sealing surface at the non-liquid side of the seal and a dynamic sealing surface having a plurality of angular vanes forming chambers open to the liquid at the liquid side of the seal. An annular coil spring biases the static sealing surface into contact with the shaft under static conditions and controls its spacing under dynamic conditions during which the vanes propel liquid toward the liquid side of the seal.

Abstract: A ring is telescoped into the end of a nut of a ball screw and nut assembly and carries a lip which breaks ice away from the screw. The plastic insert of relatively short circumferential length is supported by the ring and is urged into the groove of the screw by a spring so as to wipe mud from the screw. A felt strip coacts with the insert to seal the nut against the entry of foreign particles and to restrict the escape of lubricant from the nut.

Abstract: A head gasket to be disposed between a cylinder head having a combustion chamber therein and a cylinder block having a cylinder therein with a combustion chamber located at least partially outside the diameter of the cylinder and with the chamber insert disposed in the head. The gasket comprises a metal core, resilient material on each side of the core and at least one cylinder opening. Metal inlays are fixedly secured to both sides of the core and extend completely about the cylinder openings. The inlays include integral extensions extending from the cylinder openings and in engagement with the metal core for engaging the chamber insert and cylinder block to perfect a seal therebetween.

Abstract: A slide surface seal for laterally sealing a pressure cushion formed between a pressure plate and a metal belt advancing parallel to the plate in a moving belt laminating machine operating according to the pressure cushion principle, the seal being arranged to be mounted in a groove formed in the pressure plate and to bear against the metal belt to laterally surround the pressure cushion and to establish a fluid seal between the plate and the belt and the seal being composed of a seal mount of rigid material arranged to be inserted in the groove, at least one sealing strip secured to the mount and arranged to bear against the belt for maintaining a gap of minimum width between the seal and the belt, and an elastic sealing member secured to the mount adjacent the side of the sealing strip directed toward the interior of the pressure cushion and arranged to bear against the belt for maintaining losses of pressure medium from the cushion at a minimum.

Abstract: A sealing gasket has at least one framed throughgoing opening; the frame is formed of at least two superposed bent sheet metal border flanges which have a U-shaped cross section and which have legs of unlike lengths. The border flanges fully overlap the soft material of the gasket without forming an appreciable hollow space underneath the legs.

Abstract: A stuffing box as applied to the sliding joint between the piston (ram) and cylinder of a hydraulic ram assembly in a hydraulic injection molding machine has a packing retainer assembly with a retainer ring with a protruding gland that extends into the stuffing box thereby to act as a pilot means to insure concentricity between the stuffing box, gland, and ram. In addition, the inside diameter of the gland has a support bushing groove in which is mounted a support bushing that has an inside diameter less than the inside diameter of the gland and which is fitted in sliding bearing relationship to the outside diameter of the ram and held there by the gland. The support bushing is preferably manufactured in two pieces from a fiber reinforced low friction resin selected from the class consisting of thermosetting resin and thermoplastic resin more preferably phenol formaldehyde and polytetrafluoroethylene.

Abstract: A water tight seal structure for a camera or other device comprises a step formed in the upper end of an opening provided in the frame of the device to pass a rotating shank body which forms a movable operating member of the device. Water repellent rubber is fixedly secured to the step. The inner peripheral surface or the upper surface of the water repellent rubber is maintained in tight engagement with the adjacent surface of the shank body to prevent an ingress of water into the device.

Abstract: An all metal reusable O-ring sealing arrangement for sealing two concentric tubes in an ultra-high vacuum system. An O-ring of a heat recoverable alloy such as Nitinol is concentrically positioned between protruding sealing rings of the concentric tubes. The O-ring is installed between the tubes while in a stressed martensitic state and is made to undergo a thermally induced transformation to an austenitic state. During the transformation the O-ring expands outwardly and contracts inwardly toward a previously sized austenitic configuration, thereby sealing against the protruding sealing rings of the concentric tubes.

Abstract: A seal is provided between an outlet mounting flange and a hopper mounting flange. The seal extends in-board of the inner hopper wall and includes a projection extending upwardly which engages the hopper wall. The seal further includes a tapered portion which extends inwardly and downwardly from the projection. Thus lading and pressure in the outlet act to urge the projection into engagement with the vertical wall and the tapered portion into engagement with its supporting surface. In one embodiment a void space is located below the projection which is compressed in assembly to create a tight fit of the seal against the hopper wall. In another embodiment an outer flange portion is provided which extends around the inner end of the hopper mounting flange to aid in positioning the seal for assembly.

Abstract: A sealing device for pistons comprises a piston-ring groove having upper and lower annular inclined surfaces forming a nearly V-shape in cross-section, a piston ring having an annular inclined surface that bears tightly against the lower annular inclined surface of the piston-ring groove, and an auxiliary ring having an annular inclined surface that slides downwardly along the upper and annular inclined surface of the piston-ring groove to force the piston ring downwardly along the lower annular inclined surface of the piston-ring groove and expand the piston ring.

Abstract: The space between and surrounding aligned window openings of a vehicle cab and a camper carried thereby is sealed by an endless flexible member of sheet material of a length to surround the aligned window openings and of a width greater than the space therebetween. An endless resilient member is carried by the edge of each flexible member with each resilient member being of a length greater than the peripheral distance around the window opening adjacent thereto and adapted to snap therethrough and then retain a position outwardly thereof.

Abstract: The sealing arrangement for sealing the gap between two relatively movable stator parts includes a split ring which is adapted to twist and expand within a V-shaped notch formed by the two parts. The ring is held in place by a coil spring and the split in the ring is bridged and sealed by a locking member which allows the ring to expand and contract radially.

Abstract: Gasification device for a gas lighter: A container has an adjustment body installed to it and has a burner above the adjustment body. A porous mass is located in the container. An integral bottom closes the container. Grooves through the bottom permit liquid flow through the bottom, across the porous mass around the center needle projecting up from the container bottom and the gasified liquid exits through the burner.

Abstract: A seal unit for providing a fluid seal between a shaft and a housing. THe seal unit includes a seal element screw threadedly received within an annular casing. The seal is made of a rigid but resilient material so that on rotation of the seal element within the casing the seal element is caused to deflect to bring it into sealing engagement with the shaft. Such an arrangement makes it possible to use a seal element having an internal diameter larger than the shaft to be sealed so that the seal element may be slid over the shaft without causing damage to the sealing surface of the seal element.

Abstract: This invention provides a rotor sealing device used on an open-end spinning apparatus having a spinning rotor which forms therein air-discharge apertures, the opening in said spinning rotor being openably closed by a body member which has a fibers delivery aperture formed therein; said rotor sealing device being characterized in that a sealing member is inserted into the space located between said rotor opening and said body member positioned in opposite relation thereto. This device, though being of such a simple construction, is capable of improving the effect of rotor inside sealing over devices heretofore.

Abstract: A boot for covering the juncture between a drive shaft and a universal joint casing formed of a resilient material and having a small end portion and a large end portion with a bellows structure therebetween. The bellows has undulations with ridges and valleys with ridge angles determined such that contact between adjacent undulations when the boot is operatively connected is confined to a plane. Preferably, the thickness of the resilient material is greater in a longitudinally center portion than in the remaining portions of the bellows and the distance between neighboring ridges in the central portion is greater than in the remaining portions.

Abstract: A metallic sealing device for a valve including a fluid passage therein and an inner valve positioned in said fluid passage, which comprises an annular groove having nearly T-shape in section formed around the fluid passage by the valve body and a metallic seat holder fixed thereto and a metallic seat arranged in said annular groove and partially projecting into the fluid passage. The metallic seat consists of a metallic sheet having shoulders formed at the sides to limit the projection of the seat into the fluid passage and an extension of one of said sides extending, in the nearly T-shaped groove at the part opposite to the fluid passage toward the other of said sides, thereby promoting the fluid sealing property as well as elastic property of the metallic seat itself and nullifying the dependency of the sealing property on the fluid flowing direction to utilize the function of the fluid pressure at the time of shutting off the fluid passing through the fluid passage.

Abstract: A seal to prevent the escape of a liquid and gas mixture from the gap between a rotating shaft and the bore of a housing, which includes an inner ring secured to the shaft and an outer ring secured to the outer wall of the housing bore. A flange-like member is secured to the inner ring and employed to seal the gap between the inner ring and outer ring. The flange includes liquid and gas inlets, an internal network of voids and liquid and gas outlets. The internal void network of the flange member is adapted so that during the rotation of the flange member, gas and liquid oil is suctioned into the flange through the liquid and gas inlets, and are segregated by the rotary motion of the void network of the flange into a predominantly gaseous stream and a predominantly liquid stream.

Abstract: PCT No. PCT/US79/00505 Sec. 371 Date July 16, 1979 Sec. 102(e) Date July 16, 1979 PCT Filed July 16, 1979 PCT Pub. No. WO81/00293 PCT Pub. Date Feb. 5, 1981A sealing structure (10,110) for use in a joint (11) having a first member (12) axially movable relative to a second member (14). The first member defines a recess (13) receiving the sealing structure which includes an annular seal ring (19,119) having a radially outer annular base portion (20,120) fitted in the recess, a sealing portion (21,121) having a lip (22,122) engaging a surface (15) of the movable member (14) confronting the recess (13). The sealing portion is provided with a stiffener which is bonded or partially encapsulated therein and provided with axially inwardly projecting tongues (30,130) engaged by a spring structure (24,124).