Abstract: A bi-directional electronic lock device includes a lock mechanism and a control unit. The control unit includes a position determining component driven by the lock mechanism to rotate, a sensor configured to generate a specific sensing signal for each of three positions with respect to the position determining component, a direction determining module that actuates the lock mechanism to move from a locked state toward an unlocked state, and that generates a directional signal based on the sensing signals, and a control module that is configured to, in response to receipt of the directional signal, set the lock mechanism, based on the directional signal, to operate in one of a left setting and a right setting.

Abstract: The piston ring assembly having a first and a second endless sealing ring and an elastic ring carrier, the first and the second sealing ring extending in a circumferential direction (U) and each having an outer circumferential surface, the first sealing ring having a first center point (M1) with respect to its outer circumferential surface and the second sealing ring having a second center point (M2) with respect to its outer circumferential surface, the first and second sealing rings each having a longitudinal axis (L) running perpendicular to the circumferential direction (U), wherein the ring carrier runs in the circumferential direction (U), and wherein the ring carrier and the first and second sealing rings are designed to be mutually adapted in such a way that the first and second sealing rings are arranged one after the other in the ring carrier in the direction of the longitudinal axis (L), and in that their first and second centers (M1, M2) are arranged at a distance from one another radially with re

Abstract: There is provided a composite oil seal having an electric corrosion prevention function, which is mounted on a shaft in a motor housing to prevent leakage of oil in the motor housing. The composite oil seal includes a seal main body, which is formed of an elastic material and has an outer circumferential surface formed to be in tight contact with an inner circumferential surface of the motor housing and at least one lip protruding inwards so as to be in contact with an outer circumferential surface of the shaft, and an electrical path fabric, which is formed by weaving metallic yarns and is mounted to the seal main body to electrically connect the shaft to the motor housing so that current induced in the shaft flows to the motor housing.

Abstract: A rod seal assembly for a machine includes a crosshead and a sealed oscillating piston rod.

Abstract: A sealing element (10) includes a sealing lip (16), an outer shell (12) defining an outer perimeter of the sealing element (10), and an energizing porous matrix structure (18) that is formed integrally with the sealing lip (16) or the outer shell (12) and extends from the outer shell (12) to the sealing lip (16). The energizing porous matrix structure (18) is used to tune a sealing force of the sealing element (10).

Abstract: Disclosed is a system and method for sealing an opening through the boundary of a controlled thermal and gaseous environment such as an incubator or refrigerator, where conduit channels of arbitrary size and number are transferred across the boundary. A silicone or polymeric tube with flanges at either end is passed through the boundary opening, fixing one side to the boundary wall and attaching the other to a mechanism that controls or constrains the rotation of the tube. This is achieved by rotating or twisting one end of the tube, creating a hyperboloid-like structure that will seal around the conduits and thereby seal the opening. To further improve thermal efficiency, insulating material such as expanded polystyrene beads are placed into the space between the silicone or polymeric tube and the wall of the incubator, providing thermal stability that cannot be achieved by conventional conduit transferring methods.

Abstract: In a sliding component formed in an annular shape and disposed at a relatively rotating position of a rotating machine and sliding relative to an opposite sliding component, a sliding surface of the sliding component is provided with a conduction groove communicating with an outer space and a dynamic pressure generation groove communicating with the conduction groove, extending in a circumferential direction, and having a closed terminating end portion and at least a part of a bottom portion of the conduction groove is provided with an inclined surface inclined with respect to a radial direction.

Abstract: A sealing system for joints of joinery construction elements, especially windows and exit doors, includes an insulating material, an internal sealing layer disposed over an interior surface of the insulating material and an external sealing layer disposed over an exterior surface of the insulating material. The internal sealing layer has a low vapor permeability with an equivalent diffusion resistance factor (Sd) equal to or greater than 30 m, and the external sealing layer has a vapor permeability greater than the vapor permeability of the internal sealing layer with an equivalent diffusion resistance factor (Sd) not greater than 2 m.

Abstract: An annular seal for use in a hydraulic device provides a static seal between two components of the hydraulic device that do not move relative to each other. The annular seal has a cross-section that is substantially M-shaped along one of an inner diameter circumferential surface of the annular seal or an outer diameter circumferential surface of the annular seal. The other of the inner diameter circumferential surface or the outer diameter circumferential surface of the annular seal includes opposite side cylindrical portions extending substantially parallel to a central axis of the annular seal with a concave central portion disposed between the opposite side cylindrical portions.

Abstract: The invention relates to a mechanical seal assembly comprising a slide ring seal (2) having a rotating slide ring (3) with a first slide surface (30) and a stationary slide ring (4) with a second slide surface (40), a sealing gap (5) being defined between the first and second slide surfaces, the stationary slide ring (4) having a through hole (42) extending from a rear side (41) of the stationary slide ring to an orifice (43) of the second slide surface (40) and a gas supply line (8) extending from a gas source to an inlet (44) of the through hole (42) at the rear side of the stationary slide ring, wherein grooves (6, 7) are formed in at least one of the sliding surfaces (30, 40), the grooves being arranged in radial direction between the orifice (43) of the through hole (42) and a radially outer outlet portion (50) of the sealing gap (5).

Abstract: A metal O-ring is provided. The metal O-ring has a sidewall with an outer surface and an inner surface. The outer surface of the sidewall is machined to selectively thinning the thickness of the sidewall, such that the sidewall of the of the metal O-ring has a plurality of thicknesses equal to or less than a maximum thickness and equal to or more than a minimum thickness. Selectively thinning the sidewall by machining the outer surface allows for control of the elasticity of the metal O-ring. Controlling the elasticity of the metal O-ring, and potentially increasing the spring back, may provide for increased contract pressure at a sealing interface, which would facilitate sealing. The machined outer surface of the metal O-ring are generally machined to flat surfaces.

Abstract: A sealing system for sealing an annulus. The annulus is defined by a cylindrical interior and a cylindrical exterior within, and axially movable relative to, the cylindrical interior. The sealing system includes an inner seal (to surround and sealingly engage the cylindrical exterior), a seal support (to surround, and axially support, the inner seal), an outer seal (to surround the seal support and sealingly engage the seal support and the cylindrical interior), a first support ring (to sit behind an outer periphery of the outer seal), and a back stop (to surround the cylindrical exterior and axially support the seal support and the first ring).

Abstract: A fire protection sleeve segment can be arranged for a fire protection sleeve for sealing a combustible body penetrating an opening in a wall or ceiling in the event of fire. The fire protection sleeve segment contains a first housing element and a second housing element, wherein the housing elements have a boundary wall containing a contact surface and an outer surface opposite the contact surface. The two housing elements are rigidly interconnected and arranged so as to be stepped with respect to one another. An intumescent material is applied to the contact surfaces. To form a fire protection sleeve, a plurality of fire protection sleeve segments are arranged relative to one another and interconnected such that the intumescent material applied on the contact surface of the first housing element is covered, in whole or in part, by the second housing element of the respectively adjacent fire protection sleeve segment.

Abstract: An assembly is provided for rotational equipment. This assembly includes a metal seal carrier and a carbon seal element. The metal seal carrier includes a receptacle and a cylindrical carrier surface forming an outer peripheral boundary of the receptacle. The carbon seal element is seated in the receptacle. The carbon seal element includes a cylindrical element surface that is brazed to the cylindrical carrier surface.

Abstract: A mating ring for use in a dry gas seal and a dry gas seal. The mating ring includes a face that defines an inner diameter and an outer diameter. The face includes: a channel formed therein disposed between the inner diameter and the outer diameter; one or more inlet channels formed in the face that extend from the inner diameter to the channel; and one or more spiral grooves in fluid communication with the channel that extend from the channel toward the inner diameter. Alternatively, the one or more inlet channels can extend from the outer diameter to the channel and one or more spiral grooves can extend from the channel toward the outer diameter.

Abstract: Seal arrangement for a joint of two joint elements, in particular realized as a monopile and a transition piece, of an offshore structure, preferably an offshore wind energy installation, in particular a substructure thereof, in which, for the purpose of producing a stable joint, an upper joint element and a lower joint element are inserted into each other in a clamping manner by means of at least one seal unit, comprising one of the joint elements and the at least one seal unit fixed to the joint element, in such a manner that the seal unit, in a joining position, is arranged between an inner joint surface of one joint element and an outer joint surface of the other joint element, at least one seal unit having at least one elastic sealing element, which extends in the circumferential direction around the entire circumference and the thickness (D) of which is greater than the thickness (D?) of an adjoining seal unit region and method for producing a seal arrangement.

Abstract: There is provided a gasket comprising a rigid core (2) defining an aperture (4). The core has a serrated profile (8) on at least one of its upper and lower outer surfaces and the core is divided into upper and lower parts (2a, 2b) each having a respective outer surface (6a, 6b) and also an inner surface (42, 44) opposite the outer surface. The gasket also includes an optional sealing facing (12, 14) on the at least one outer serrated profile surface, wherein an inner insulating layer (40) is located between the said upper and lower parts so that it is operable to substantially reduce electrical conduction between the said upper and lower parts. There is described a method of production of the gasket and use of the gasket.

Abstract: A face seal assembly includes a rotationally fixed first component at least partially defining an interior chamber containing a volume of lubricant. The first component includes a rotationally fixed seal element. A rotatable second component is rotatable about an axis of rotation relative to the first component. The second component includes a second component body extending along the axis of rotation from the interior chamber to outside of the interior chamber. An axially facing component surface is located in the interior chamber and is configured to engage with an axially-facing element surface of the seal element to define a seal interface of the face seal. A plurality of fins extend radially outwardly from the second component body in the chamber interior, such that the plurality of fins create a centrifugal force on the volume of lubricant to urge the volume of lubricant away from the seal interface.

Abstract: There is provided a gasket (100) for sealing two mating surfaces, the gasket comprising: a rigid non-metal core (102) defining an aperture (104), the core comprising a first face (106) extending away from the aperture and a second face (122) opposite the first face; and at least one sealing layer (108); wherein the first face comprises: a substantially flat inner region (112) defining a plane; and a serrated region (110) comprising a plurality of serrations (118) that extend substantially perpendicular to the plane, wherein the substantially flat inner region is located between the aperture and the serrated region, wherein the serrations are recessed in the first face such that they do not cross the plane, wherein the at least one sealing layer overlays at least part of the serrated region of the first face.

Abstract: A piston seal assembly for a gas turbine engine includes a seal formed of a nickel-based superalloy; a component in contact with the seal and defining a seal-counterface; and a coating on the seal at the seal-counterface, wherein the coating is a nanostructured, self-lubricating coating material.