Abstract: The invention relates to a method of construction of concrete beams or walls using a formwork module comprising an elongate rectilinear front face, a peripheral border wall extending from the front face, two spaced pairs of bolt sockets extending through the rectilinear front face, and a plurality of opposed slots in the peripheral border wall.

Abstract: In a structure for supporting components of a wall, one lower profile section is shaped to form longitudinal recesses and an operating unit is associated with the lower profile section base, and removably coupled at top to at least one structural element. The operating unit has one foot, shaped to form at least one protrusion for coupling, when the operating unit is rotated about a vertical axis, with the longitudinal recesses by engagement at least of the protrusion with a matching portion of the recesses, thus forming a bayonet joint between the operating unit and the lower profile section.

Abstract: In a component for supporting structures, a central body with a passing axial hole has on a front external wall and a rear external wall a first front seat and a first rear seat, accessible from outside and symmetrical with a first longitudinal symmetry plane of the body. Other external walls of the central body, namely a right external wall and a left external wall, have respectively a second right seat and a second left seat, accessible from the outside and symmetrical with respect to a second longitudinal symmetry plane extending at right angles to the first longitudinal symmetry plane of the central body.

Abstract: A device for stripping a waterproof rubber membrane and foam insulation from a roof. The device includes a wheeled frame having a pair of handlebars at its rear for steering by a walking attendant. A first cutting blade is secured to the front of the wheeled frame and is rotatable about a substantially vertical axis. A pair of second cutting blades is secured to the front of the wheeled frame on opposite sides of the first cutting blade. Each one of the second cutting blades is rotatable about a substantially horizontal axis. A prime mover is secured to the frame for rotating the first cutting blade and the second cutting blades.

Abstract: A modular surfacing system provides solid seamless natural stone modular pieces cut from the same stone block for matching coloration and pattern. The pieces are cut into any desired sizes with wide edging of any desirable thickness and solid piece corners as well as mating modular surface tiles and mating modular backsplash tiles. Since all pieces are cut from a thick block of stone, such as marble or granite, horizontal, vertical, and depth cuts may be made of any desired length and shape to create truly matching modular pieces of any desired dimensions.

Abstract: A modular surfacing system has edge pieces with skirts attached using a break away adhesive material allowing separation of the pieces without damage. The edge rail pieces may be used alone or with the skirt piece attached at any of a variety of overhanging heights to cover different substrate edge thicknesses. Skirts may be interchanged. The modular surfacing pieces may be solid seamless cut natural stone modular pieces, laminated natural stone modular pieces, composite material or synthetic material shaped into modular pieces. The pieces are cut into any desired sizes with wide edging of any desirable thickness and solid piece corners as well as mating modular surface tiles and mating modular backsplash tiles.

Abstract: A container for a relatively brittle product, such as a haemostatic bandage, including a body and a lid for closing the container to hermetically seal the product therein. A sealing rim of the lid includes a layer of elastomeric material which sealingly engages with a sealing rim of the container body to provide a first, static, seal and a second, dynamic, seal. The elastomeric sealing material extends into the interior of the container beneath the lid to provide an elastomeric formation operative to engage an upper surface of the product within the container so as to apply a resilient bias thereto to hold a lower face of the product against the base of the container. The elastomeric formation thereby acts to inhibit substantial movement of the product within the container.

Abstract: A method of traveling with a disposable diaper on one's person includes: first, vacuum-packaging a disposable diaper such that the vacuum-packaged diaper is dimensioned to fit within a pocket of an article of clothing on one's person and, thereafter, placing said vacuum-packaged diaper in a pocket of an article of clothing on one's person, and traveling with said disposed packaged diaper in the pocket of the article of clothing on one's person. The vacuum-packaged diaper includes a packaging made from a substantially flexible material and a disposable diaper contained within the packaging in a compressed condition. The packaging is hermetically sealed at negative pressure such that a pressure differential acts upon the packaging to maintain the diaper in the compressed condition when the packaged diaper is carried in the pocket.

Abstract: A storage bin having a mechanism (2) for wrapping objects to be stored in the bin. The bin comprises two trays (4,5) configured to receive a roll of self-adhesive film (3). Two rollers (6,7) are rotated in an insertion direction (30) by a driving mechanism so as to cause an object (9) to pass between the rollers (6,7) into a container (1) as the object (9) becomes wrapped in the self-adhesive film (3).

Abstract: An apparatus for processing a rolled article has a rotary supporting mechanism for rotatably supporting opposite ends of a photosensitive roll, an end drawing mechanism for drawing a sheet end of the photosensitive roll to a prescribed length, a pressing mechanism for supporting opposite surfaces of the sheet end, and an applying mechanism for applying a joint tape to the sheet end supported by the pressing mechanism in a transverse direction of the photosensitive roll.

Abstract: A container filling apparatus includes a fill turret configured to carry a plurality of containers along a first portion of a path as the containers are filled with liquid. A container guide is mounted in fixed relation to the fill turret, the container guide defining an upper guide surface and a lower guide surface spaced apart from the upper guide surface. The upper and lower guide surfaces cooperate to define an edge of a second portion of the path, where the upper guide surface is located to contact a container at a first location and the lower guide surface is located to contact the container at a second location that is spaced apart from the first location. The upper and lower guide surfaces maintain the container in an upright position as the container moves along the edge of the path.

Abstract: A form-fill-seal method and apparatus for wrapping food items. A form-fill-seal apparatus includes a shaped seal member and a shaped cutting knife, for example, a curved seal member and a curved cutting knife. Wrapping film is provided to the form-fill-seal machine, e.g., as a flat shape, and formed into another shape. A food item is fed into a pocket of the formed wrapping film. A shaped seal is formed in the wrapping film along a first end of the food item using the shaped seal member and cut adjacent to the shaped seal with the shaped cutting knife.

Abstract: A tree for a saddle having a body and a forwardly disposed bearing part which, when the saddle is mounted on a horse, is located adjacent or close to the horse's withers, the bearing part being releasably attachable to the body, whereby one of a plurality of different bearing parts may be used in association with a given body.

Abstract: A filter bypass valve is disposed in parallel with an aircraft cabin air filtration system air filter. During normal operation, air is filtered through the air filter at an air flow that meets air flow requirements of the system. The bypass valve is designed to remain closed during normal use, and to open if the differential pressure across the air filter reaches a predetermined opening differential pressure to allow airflow to be partially or fully diverted around the air filter.

Abstract: A cyclonic separator/collector device (11) for a suction cleaner, comprising a housing (12) and at least one cyclonic separator disposed within the housing, the or each cyclonic separator having a cyclone body (52, 54) with a circumferential wall of which at least a major part is spaced from the housing (12); the space between the housing and wall of the cyclone body(s) (52, 54) receiving separated dust from the cyclonic separator(s). The arrangement provides sound insulation for the cyclonic separators.

Abstract: A cyclonic separating apparatus for separating solid material from a fluid includes a separating chamber, an inlet communicating with the separating chamber for carrying the fluid with the solid matter entrained therein to the separating chamber, and an outlet for carrying the fluid away from the separating chamber after the solid material has been separated therefrom. The outlet is formed by a conduit communicating with the interior of the separating chamber and having a longitudinal axis. A plurality of groves are formed in an interior surface of the conduit outlet and extend in the same direction as the longitudinal axis. The presence of the grooves in the outlet has the effect of reducing noise generated by the apparatus when in use and also improves pressure recovery.

Abstract: Ceramic particles, fine particles having smaller average particle diameter smaller than that of the ceramic particles and a reduction-resistant material are mixed to obtain a puddle. The reduction-resistant material is a material that is reduced by carbon at a higher temperature as compared with a temperature at which an oxide (for example, silica) of an element contained in the ceramic particles is reduced. The average particle diameter of the ceramic particles is preferably about in a range of 5 to 100 ?m and the average particle diameter of the fine particles is preferably about in a range of 0.1 to 10 ?m. The reduction-resistant material is, for example, alumina. This puddle is extrusion molded into a honeycomb filter and the molded object is sintered at about 1600 to 2200° C.

Abstract: A fabric filter media resistant to high temperatures and method for making same which includes forming a circular knit fabric from Basalt continuous fibers; having the particular characteristics and effective for separating particulates from high temperature gas streams.

Abstract: The Quick Exchange three Point hitch toolbar design allows for the toolbar to function as a multi task system for a variety or work requirements. The toolbar system is comprised of a number of pieces: a main frame tool bar beam, receiver couplers, connecting arms, expansion couplers, expansion arms, expansion bars and beams that inter connect to form an expandable toolbar. Changes are easily accomplished by removing a holding pin then adding or removing an expansion bar and/or a connecting bracket and reinstalling the holding pin. This system makes it possible to perform different tasks by changing the width, length or depth of the tool bar and then attaching the needed accessory pieces. This tool bar system accepts pre manufactured 3PH equipment eg) cultivator shank, disk gang, carry tote etc. or an individual can use this tool bar system to custom fit accessory tool pieces for their specific requirements.

Abstract: A carrying system for an implement, comprising a carrying arm and a receiving device held on the carrying arm for receiving the guide rod of the implement. In a first state, the receiving device is adapted to fix the guide rod in a longitudinal direction thereof. In a second state, the receiving device is displaceable in the longitudinal direction of the guide rod.

Abstract: A mower deck assembly which essentially “flips up” or raises from a mowing configuration to an access configuration with minimal manipulation of controls and manual lifting. A deck is connected to a frame by a parallelogram suspension which includes front and rear support arms. A rear of the deck removably connects through a height adjustment mechanism that includes the hook and capture device selectively allows the rear of the deck to swing freely so that when the mower is in a non mowing configuration. The deck has mounted thereon a plurality of pulleys, including blade pulleys connected by a single drive belt and driven by a single motor. One of the pulleys is a tension pulley that can be manipulated to disengage the pulley system. The front of the suspension includes a fine height adjustment mechanism.

Abstract: A picker bar includes spindles which are nonaligned in the vertical direction to define two or more offset sets of spindles on the bar and increase the number of spindles per unit length of the spindle bar. A spindle assembly includes support carrying two spindles driven from a picker bar drive shaft by single drive gear. Driven spindle gears are spaced on opposite sides of the shaft axis to facilitate close spacing of the spindles.

Abstract: A mower attachment comprising an attachment housing and a plurality of blade assemblies. The attachment housing includes an upper surface and front and rear baffles extending downwardly from the upper surface, the front and rear baffles shaped to define a plurality of blade chambers therebetween. The plurality of blade assemblies are positioned within the plurality of blade chambers. A leading plate is operatively connected to the housing and extends away from the plurality of blade chambers. The leading plate includes a plurality of apertures on a top side thereof.

Abstract: The invention provides a polyester bicomponent core spun yarn comprising a sheath of at least one hard fiber and having an English cotton count of from about 5 to about 60 and a core of bicomponent polyester filament. The invention further includes a fabric substantially free of grin-through of the bicomponent polyester filament.

Abstract: Cut resistant yarns suitable for knitting gloves and sleeves and methods of making the yarns are disclosed. The yarns are made up of a bundle of continuous filaments formed of a synthetic material, e.g., polyethylene, polypropylene, nylon or polyolefin, and a stretchable yarn, e.g., Spandex® or Lycra®. The yarns are made in such a manner that when completed the continuous filaments are substantially parallel to one another and to the longitudinal axis of the yarn so that items made from them will not twist or curl up, yet will provide good resistance to cutting.

Abstract: A rope comprising a plurality of bundle groups, each of said bundle groups having a periphery and comprising a plurality of high strength fibers, at least one low coefficient of friction fiber disposed around at least a portion of the periphery of at least one of the bundle groups.

Abstract: An elongation cord (10) adapted for the reinforcement of elastomer structures has a polymer core (12) and three to nine strands (14) twisted around the core with a cord twisting step in a cord twisting direction. At least one of the strands (14) has a first group (16) of filaments (17, 18) and a second group (20) of filaments (21, 22). The first group (16) of filaments (17, 18) is twisted with a first twisting step in a first twisting direction and the second group (20) of filaments (21, 22) is twisted with a second twisting step in a second twisting direction. The first twisting step is different from the second twisting step or the first twisting direction is different from the second twisting direction, or both. The first twisting direction is equal to the cord twisting direction and the first twisting step is equal to the cord twisting step.

Abstract: A link with a first segment (3) of nearly constant width whereon near its free end (4) it has a transverse oblong slot (5), originating a bracket-shaped bridge (6), at the other end said segment (3) narrows and joins the second segment (8), which also has nearly constant width, smaller than the length of the slot (5) in the first segment (3), with said second segment (8) bent, towards its origin, in a position parallel to the first segment; said segments (3) and (8) having a length such as to leave between their approached free ends a space (13) that is a little greater than the thickness of the strip with which the link is manufactured.

Abstract: A passive exhaust system is described that provides effective infrared signature suppression without affecting radar cross-section while maintaining stable function in crosswinds. A passive exhaust system may include an array of ducts with each duct having a primary and secondary nozzle. Central ducts draw in ambient cooling air to create a thick cooling film along exterior surfaces and cause plume dilution, stabilize the plume flow in a crosswind, and prevent heating of visible surfaces. Visible surfaces may incorporate radar absorbing materials and may be inclined at an angle or fabricated with a diffuse surface to prevent specular reflection Visible surfaces may be constructed from or covered with low infrared emissivity materials. A variable passive flow controller ensures a sufficient velocity exhaust flow.

Abstract: An example exhaust duct assembly includes a front liner, an intermediate liner and a rear liner. Each of the front, intermediate and rear liners include an inner liner exposed to combustion gases and an outer liner spaced radially apart from the inner liner. An air passage defined between the inner liner and the outer liner provides cooling air utilized for insulating an inner surface of the exhaust duct assembly. A closeout member is provided between the inner and outer liner and defines a portion of an air passage between the closeout member and the inner liner. Air flowing through the air passage is injected into a joint to provide cooling. The closeout member includes a horizontal leg that is bendable in a radial direction to accommodate relative movement between the inner liner and the outer liner.

Abstract: A nacelle assembly 40 adapted for mounting on a ducted fan gas turbine engine 20 comprising a generally annular body 46 having an air inlet 42 and an air outlet 44, the generally annular body 46 encircling a region of the engine 20 when working in operative association with the engine 20 and has a first attachment means 48 to a rigid member 58 and a second attachment means 52 to a casing assembly 34 on the engine 20 wherein the second attachment means 52 is frangible.

Abstract: A supersonic aircraft engine axial fan that includes a rotating blade row having blades that receive a supersonic entry flow in the absolute frame and decelerate the flow to a lower supersonic or subsonic velocity exit flow while adding work to the flow to increase stagnation pressure. It is preferred that the lower velocity be subsonic. When the fan is combined with a suitably designed inlet, the propulsion system is compact and lighter in weight than conventional engines for supersonic aircraft.

Abstract: Emissions from systems that use a catalytic converter are substantially reduced by introducing hydrogen, or a hydrogen containing fluid or fuel component, into the exhaust stream being scrubbed by the catalytic converter, resulting in instant lightoff and a significant reduction in emissions. Hydrogen for injection into the exhaust stream may, optionally, be generated within the vehicle using heat recovered from the catalytic converter, and/or the engine or elsewhere in the exhaust system, by a thermoelectric generator, the electrical output of which may be used to perform electrolysis and/or to power a reformer in order to generate the hydrogen. The thermoelectric generator may be retrofit onto the catalytic converter, or integrated in a way that enhances thermoelectric generation, including providing a catalyst coated heat sink and integrated cooling pipes to enhance the thermal differential required for thermoelectric generation.

Abstract: Emissions from systems that use a catalytic converter are substantially reduced by introducing hydrogen, or a hydrogen containing fluid or fuel component, into the exhaust stream being scrubbed by the catalytic converter, resulting in instant lightoff and a significant reduction in emissions. Hydrogen for injection into the exhaust stream may, optionally, be generated within the vehicle using heat recovered from the catalytic converter, and/or the engine or elsewhere in the exhaust system, by a thermoelectric generator, the electrical output of which may be used to perform electrolysis and/or to power a reformer in order to generate the hydrogen. The thermoelectric generator may be retrofit onto the catalytic converter, or integrated in a way that enhances thermoelectric generation, including providing a catalyst coated heat sink and integrated cooling pipes to enhance the thermal differential required for thermoelectric generation.

Abstract: A method and system for controlling exhaust gas temperature at a diesel particulate filter during regeneration. The temperature rise is controlled at a rate that will prevent harm to the filter caused by high temperatures and rapid increases.

Abstract: Described here are systems and methods for reducing emissions of IC engines using a fuel processor bypass. In general, the systems described here include an exhaust pipe, a bypass pipe, a valve, a fuel processor, a fuel injector, and a NOx trap. When the valve is in the open position, the entire exhaust passes through the bypass pipe. When the valve is in a closed position, the entire exhaust passes through the exhaust pipe. In some variations, the systems described here also comprise a pre-combustor, a thermal mass, a mixer, and/or a DPF. Methods for regenerating or desulfating a NOx trap are also described. Typically these methods include introducing exhaust into an exhaust pipe, opening a valve located at the inlet of a bypass pipe, injecting fuel upstream of a fuel processor, and introducing a reducing mixture into a NOx trap. The injection of fuel may be pulsed or continuous.

Abstract: A piston-type internal combustion engine (10) having an intake line (20) for delivering air to combustion chambers of the engine and an exhaust system (15, 22) for removing exhaust gases from said combustion chambers. The exhaust system includes equipment (29, 30) for reducing environmentally harmful exhaust emissions from the engine, which is intended to function with variable load in order to propel a vehicle. The exhaust system (15, 22) has a branch pipe (26) controlled by a valve (24) and bypassing at least one part of the equipment (29, 30) for reducing environmentally harmful exhaust emissions. The valve (24) is controlled so that it leads the exhaust gas flow through the branch pipe (26) over a part of the overall load range of the engine. The engine is optimized in order to give acceptable exhaust emissions over said part of the overall load range of the engine.

Abstract: An air flow regulation system for enhancing the performance of oxidation catalyst in the exhaust stream of an internal combustion engine is provided wherein air flow into the exhaust upstream of an oxidation catalyst is dynamically controlled via a controlled feedback loop to ensure sufficient oxygen availability to induce enhanced oxidation catalyst performance while simultaneously limiting the exhaust cooling effect of the incoming air stream and the associated loss of catalytic conversion performance. The modulation of air temperature and flow into the exhaust gas stream of a reciprocating internal combustion natural gas fuel engine upstream of an oxidation catalyst is regulated such that oxidation of carbon monoxide, hydrocarbons, and ammonia is achieved to a level beyond the levels attainable and maintainable with a catalyst strategy that relies only upon pre-combustion air/fuel ratio management. In one aspect, the modulation of air flow into the exhaust is via an electronically controlled feedback loop.

Abstract: One concept of the inventors relates to a system and method in which a particulate filter comprises at least about 40% by weight of an NOx adsorbant. The filter can be used as both an NOx trap and a particulate filter. By constructing the filter elements using a substantial amount of NOx adsorbant, a large volume of NOx adsorbant can be incorporated into the particulate filter, which substantially reduces the volume and expense of an exhaust system that includes both a catalytic diesel particulate filter and an NOx trap having a large quantity of NOx adsorbant. In a preferred embodiment, the filter also oxidizes NO to NO2. In another preferred embodiment, an SCR catalyst is position downstream of the filter elements.

Abstract: An exhaust gas purification system has a first accumulation quantity estimation device that estimates an accumulation quantity of exhaust particulate matters collected by a diesel particulate filter (DPF) based on a flowing state of exhaust gas and a second accumulation quantity estimation device that estimates the accumulation quantity based on an operating state of an engine. The first estimation device is employed only when a flow rate of the exhaust gas is equal to or greater than a predetermined value and the engine is in a steady operating state. Otherwise, the second estimation device is employed. The exhaust gas flow rate is increased if the estimation by the second estimation device continues for a long time. Thus, an opportunity to perform the accumulation quantity estimation with the first estimation device is increased, and accumulation accuracy is improved.

Abstract: The invention relates to a shielding component, in particular a heat shield, consisting of at least two shield components (10, 12) which can be connected to each other by way of a connection unit (14). Because the connection unit (14) has a guide means (16) which enables adjustment of the relative position of the individual shield components (10, 12) to each other and which is used for fastening in the adjusted position, a sliding heat shield concept arises in which, with a heat shield consisting of several shield components, adaptation is possible on site to the geometrical conditions of engines and their add-on parts including exhaust systems, and then effective sound damping and heat insulation can be produced in a wide area with only one shielding component and its shield components.

Abstract: The invention relates to a shielding component, a heat shield in particular, having at least two shield components (10, 12) which may be detachably connected to each other by way of a connection unit. In that the connection unit consists of at least one snap fastener (16) the stud element (18) of which is connected to one shield component (10) and the eyelet element (22) is connected to the other shield component (12), the respective shield components may be reliably separated from each other and reconnected to each other with exertion of little manual effort.

Abstract: A method for the supplying bearing elements in a hydrodynamic coupling: The coupling includes a primary wheel and a secondary wheel, which together form a working area capable of being filled with operating fluid. An operating fluid system having a direct circulation connecting at least one outlet from the working area to an inlet into the working area. A filling line connectable at least indirectly to the operating fluid source. An emptying line connecting the outlet at least indirectly to the operating fluid source. The filling line and the emptying line are connected via the direct circulation to the inlet and the outlet, together with a lubricant supply system, which is capable of connection to the filling line, and which is supplied with lubricant during all operating modes. At least during the filling mode, the supply of lubricant is via the filing line that is capable of connection to the operating fluid source.

Abstract: A control device for a construction machine according to the present invention is configured so that in the construction machine provided with an automatic stop function which automatically stops an engine by an engine controller upon a predetermined automatic stop condition being met, and a hydraulic lock function which sets a hydraulic actuator locked in an inactive state by a hydraulic lock controller, there is provided a restart switch, where after an automatic stop of the engine, when the restart switch is operated, a restart command is transmitted to the engine controller via a route independently of that of an engine switch and independently of a hydraulic unlock condition, and the engine is restarted.

Abstract: A system and method of achieving ride control for a work vehicle that replaces a traditional accumulator with a ride control valve, a directional control valve and a fluid pressure source. The fluid pressure source may be a variable displacement hydraulic pump. The ride control valve is set to a first relief pressure that allows fluid to flow from the head end of a hydraulic cylinder when the loading on the cylinder, i.e., the pressure in the head end is equal to or greater than the first relief pressure. A work tool of the vehicle falls from a first position to a second position when fluid flows from the head end. The ride control valve is then reset to a second relief pressure, higher than the first relief pressure and sufficient to move the work tool toward the first position. Afterwards, the directional control valve is opened long enough to allow fluid from the fluid pressure source to enter the head end and move the work tool back to approximately the first position.

Abstract: A power generating apparatus combining; tidal height energy accumulators 10, a selectively isolated chamber system 42 and a venturi enhanced tidal flow energy generating device 72. Tidal height energy accumulators 10 are provided with first and second power generating means, allowing power to be generated on upward and downward motion of a float member. The incorporation of energy accumulators 10 within the chamber system 42, allows the energy accumulators 10 to be selectively isolated from tidal height changes. The sequential operation of energy accumulators 10 and chamber system 42 enables power generation to be controlled over a period of time. The structure of chamber system 42 diverts tidal flow into the tidal flow energy generating device 72.

Abstract: A channelized stratified regenerator with integrated heat exchangers are disclosed using micromachining to precisely construct structural geometries, such as fins and axial stratification of material to be used in a Stirling cycle based system. In operation, a working fluid passes through the regenerator when traveling between two heat exchangers. In some implementations, the regenerator and the heat exchangers are formed as a single construction. In other implementations, the regenerator and heat exchangers are formed separately, but are constructed to integrate efficiently with one another.

Abstract: A channelized stratified regenerator with integrated heat exchangers are disclosed using micromachining to precisely construct structural geometries, such as fins and axial stratification of material to be used in a Stirling cycle based system. In operation, a working fluid passes through the regenerator when traveling between two heat exchangers. In some implementations, the regenerator and the heat exchangers are formed as a single construction. In other implementations, the regenerator and heat exchangers are formed separately, but are constructed to integrate efficiently with one another.

Abstract: A channelized stratified regenerator with integrated heat exchangers are disclosed using micromachining to precisely construct structural geometries, such as fins and axial stratification of material to be used in a Stirling cycle based system. In operation, a working fluid passes through the regenerator when traveling between two heat exchangers. In some implementations, the regenerator and the heat exchangers are formed as a single construction. In other implementations, the regenerator and heat exchangers are formed separately, but are constructed to integrate efficiently with one another.

Abstract: To provide a plunger type master cylinder capable of reducing invalid stroke and preventing residual pressure without impairing durability of a seal ling (70). A piston (91) of the master cylinder has a recess (93) at its outer peripheral surface and a relief port (900) in its recess (93). The seal ring (70) has a seal coupling part (70s) on the inner periphery of the distal end part of an inner peripheral lip (701). The seal coupling part (70s) is located at the opening of the relief portion (900) on the piston (91) side when the brake is in a non-operating position. The distance between said seal coupling part (70s) and said relief port (900) is short. The seal ring (70) additionally has first and second projection parts (7006, 7002) on the inner peripheral surface of the inner peripheral lip (701). By this, a flow passage for working fluid can be obtained on the inner periphery side of the inner peripheral lip (701).