Abstract: A roll-out apparatus, method, and system is disclosed for deployment in a subterranean well at a setting location. The roll-out apparatus, method, and system includes a load ring and an energizing ring. The load ring may include an outer surface having an outer circumference and a slot extending through the entire wall thickness that follows a circuitous path from a front face to a back face of the load ring. The energizing ring includes an outer surface configured to contact an inner surface of the load ring to enlarge the outer circumference of the load ring in a radial direction. This causes the outer surface of the load ring to seal to an inner surface of the subterranean well at the setting location.

Abstract: Systems and methods of forming articles using electromagnetic radiation are disclosed. In some aspects, the system includes a plurality of forming modules movably mounted relative to an infeed mechanism. The infeed mechanism is configured to supply pre-form articles to the plurality of forming modules, and each of the plurality of forming modules includes a multi-segment mold disposed about an electromagnetic coil. The electromagnetic coil is configured to impart an electromagnetic force on the pre-form articles when supplied with electrical energy that urges the pre-form articles into contact with the multi-segment mold to produce the formed containers.

Abstract: A valve body has a substantially disk shape and is provided in a gas passage. A shaft supports the valve body so as to be rotatable in the gas passage. A groove portion is provided at an outer edge portion of the valve body on an outer side in a radial direction so as to extend in a circumferential direction of the valve body. A seal ring is formed in an annular shape, has a separated portion as a cut in a part in the circumferential direction, and is fitted in the groove portion of the valve body. At least one of one end surface in a circumferential direction and the other end surface in the circumferential direction of the seal ring is a inclined surface that is inclined so as to guide a foreign matter accumulated in a gap of the separated portion to an outside of the gap.

Abstract: An improved life hydraulic valve actuator for a mold used in an injection molding machine. The actuator includes a housing for insertion into a hot runner assembly having a movable valve gate pin. A bore in the housing for receives an actuation piston which is connected to the gate pin. A hydraulic chamber in the assembly lifts the piston upward and downward for actuation of the pin in a valve gate. The actuation piston includes a centrally located circumferential double lip seal. The wall of the bore includes a pair of circumferential seals for engaging the outer circumference of the piston. The seals are positioned axially on either side of said centrally located double lip seal of the piston for sealing and guiding the piston. The circumferential bore seals include a Teflon ring which protects the bore in the event of seal failure and a second seal made of a Viton material. The seals in combination increase the longevity of the actuator over three fold than a similar actuation valve.

Abstract: A bridge plug or packer assembly includes a mandrel. At least one sealing element is provided on the mandrel. A pair of backup rings is provided on the mandrel on respective sides of the at least one sealing element. Each of the pair of backup rings has a single spiraled ring groove. A pair of pressure-applying elements is provided on the mandrel on respective sides of the pair of backup rings, respectively.

Abstract: A ram type blowout preventer having a seal on each ram, extending across the front face, rearwardly and then over the top portion or the bottom portion of the ram. Each ram forms a leading edge portion above or below the front face seal, so as opposing rams move into the extended sealing position, the leading edge portions of the rams press against each other, imparting a generally vertical movement to bring the seals on the front faces into sealing engagement with each other and to energize the seals extending over the top or bottom portions against the ram bores. The front face of each ram may include a portion which is inclined toward the central bore. Rope packing seals may be provided on the rams having a vertical offset at the front faces of the rams such that rope packing seals on opposing front faces seal against each other.

Abstract: An axial piston pump, comprising a cylinder block having one or more cylinder bores; and one or more piston assemblies; wherein number of piston assemblies matches number of cylinder bores; wherein each of the piston assemblies having a piston being disposed reciprocating in each of the cylinder bores; and wherein each piston being fitted with a metallic sealing ring, which is a coiled felt seal (CFS), for reducing leakage and keeping concentric of the piston within its corresponding cylinder bore.

Abstract: A piston assembly including a piston body and a piston ring is provided. The piston body has a skirt, a portion of which extends circumferentially continuously and has a skirt diameter. The piston ring has a ring body which extends through at least one revolution in a generally helical shape when in a relaxed condition. The ring body also has an inner face, and when in the relaxed condition, the inner face presents a ring diameter which is less than the skirt diameter. The ring body circumferentially surrounds the skirt of the piston body, thereby causing the inner face to be biased into engagement with the outer surface of the circumferentially continuous portion of the skirt of the piston body to establish a dynamic seal between the ring body and the piston body.

Abstract: The invention relates to a combustion gas seal for injectors and to a seal structure disposed therewith, for preventing leakage of combustion gas in a state in which an injector is mounted to an engine head. And, the number of parts is reduced, vibration and noise are reduced, and sealing performance is improved. A tapered surface, in which an clearance between the tapered surface and an inner peripheral surface of a mounting hole of the engine head narrows from an engine bore side towards an atmospheric side, is disposed at a groove bottom of an attachment groove of the injector, and an abutment portion that abuts against the tapered surface is disposed at the combustion gas seal for injectors.

Abstract: A compression piston ring includes a ring gap defined by facing first and second end faces; a ring back situated diametrically opposite the ring gap; first and fourth quadrants extending from opposite sides of the ring gap and second and third quadrants extending from opposite sides of the ring back to the respective first and fourth quadrants. The first end face is situated in the first quadrant and the second end face is situated in the fourth quadrant. The wall thickness of the compression piston ring is reduced exclusively in the first and fourth quadrants.

Abstract: A method of forming a tension resistant O-ring is formed by extruding a length of precured elastomer with a coextensive central aperture; longitudinally dividing the elastomer; winding a strand of nonelastic synthetic material to form an endless ring having a predetermined toric axis diameter and a toric diameter less than the diameter of the elastomer aperture; assembling the endless ring and elastomer halves in a rubber mold; and, heating the mold to cure the elastomer.

Abstract: An improved sealing means for internal combustion engines comprising a combination of a metal primary sealing ring positioned substantially within a groove on the piston, and a compliant secondary sealing ring positioned in the groove behind the primary compression ring so that the compressed combustion gases force the compliant secondary sealing ring to form a seal between the groove and the primary sealing ring. In the preferred embodiment, the gapped ring is non-planar in order to provide effective sealing in a ported fixed-piston, rotating and translating cylinder engine such as the Deckard engine. Alternate embodiments include gapless rings with only a primary compression ring, and gapless rings with a compliant secondary sealing ring. An alternate embodiment is a single piece metal-capped compliant secondary sealing ring.

Abstract: A sealing arrangement for establishing a seal between two machine elements, such as a rod or piston undergoing axial motion within a housing. A rod or piston seal is arranged in a groove of the second machine element, which typically is the housing of the rod or piston. The groove is open in the direction of the first machine element, and contains a seal ring and a prestress ring made of elastomeric material. The seal ring has an essentially T-shaped cross-section and touches the surface of the first machine element which is to be sealed with the sealing surface of its radial ridge, forming a seal. The prestress ring is arranged between the base of the groove and the axial ridge of the seal ring, under elastic prestress. The transition from the faces of the radial ridge to the sealing surface is rounded.

Abstract: A tip seal for use in a scroll-type vacuum pump includes a seal element and an energizer element affixed to the seal element. The scroll-type vacuum pump includes first and second scroll blades that are nested together to define one or more interblade pockets, and an eccentric drive that produces orbiting movement of the first scroll blade relative to the second scroll blade. At least one of the first and second scroll blades has a seal groove along an edge thereof. The tip seal is positioned in the seal groove between the first and second scroll blades. The energizer element is formed of a resilient material having multiple compressible voids, so that the energizer element having compressible voids is more compressible than the resilient material alone, when confined by the seal groove. In one embodiment, the energizer element is a foam such as a low porosity urethane foam. In another embodiment, the energizer element is an elastomer material having a predetermined pattern of voids.