40results about How to "Improved seal durability" patented technology

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).

Provided is a bipolar secondary cell comprised of first and second bipolar electrodes and a separator. The first and second bipolar electrodes are provided with a power collecting element composed of a first resin as a base material and a conductive resin layer; a positive-electrode active material layer formed on one surface of the power collecting element; and a negative-electrode active material layer formed on the other surface of the power collecting element. The separator is disposed between the first and second bipolar electrodes and composed of a second resin as a base material, and holds electrolyte to form an electrolyte layer. The bipolar secondary cell is comprised of a power generating element provided with an electric cell layer composed of the positive-electrode active material layer of the first bipolar electrode, the electrolyte layer, and the negative-electrode active material layer of the second bipolar electrode. The melting point of the first resin is not more than that of the second resin. The peripheral edges of the power collecting elements of the first and second bipolar electrodes are fusion-bonded to the peripheral edge of the separator, to seal the outer periphery of the electric cell layer.

It is intended that the rotation resistance is decreased while the durability and seal performance are kept in the rolling bearing unit with seal ring.The most thin wall-thickness portion 30 is provided in the vicinity of the base end of the seal lip 22a projecting laterally in sliding contact with the mating surface. The most thick wall thickness portion 31 is provided adjacent to the most thin wall thickness portion 30 on the tip end side. The thickness is gradually decreased from the most thick wall thickness portion 31 to the tip end. Further, the ratios of thickness in the respective portions 22a are properly controlled.

A sealed honeycomb structure may include porous walls dividedly forming inlet cells and outlet cells extending from an end surface of an inlet side to an end surface of an outlet side, an outlet side sealing portion, and an inlet side sealing portion, wherein at least one outlet cell is a reinforced cell, where a reinforced part for reinforcing the outlet cell is formed at at least one corner portion at which the walls on a cross-section vertical to an extending direction of the cell cross each other, and wherein the inlet cell is a non-reinforced cell where the reinforced part is not formed at all the corner portions at which the walls on the cross-section vertical to the extending direction of the cell cross each other.

A tube having sealing ring grooves formed by a sequential rotational process and a shock absorber including the tube, in which durability of a sealing ring fitted in each of the sealing ring grooves is enhanced. An inclination angle (θ1) formed with respect to a plane (PL1) perpendicular to an axis of a separator tube by a side surface of the sealing ring groove, which is located on an opening end side of the separator tube, is set to 8° or more. With this, a maximum tensile stress to be applied to an O-ring can be reduced to be smaller than a maximum tensile stress in a case of using a backup ring. As a result, the durability of the O-ring can be set equivalent to or enhanced to be higher than durability in the case of using the backup ring.

Disclosed is an integrated fluorine gasket manufactured by injection molding for hydrogen fuel cells. In particular, a fluorine compound having a fluorine content of about 60 to 75 parts by weight based on 100 parts by weight of a fluoroelastomer is disposed in a gasket. The resulting fluorine gasket is integrated with a thin bipolar plate having a thickness of about 200 μm or less to have a thickness of about 750 μm or less by injection molding on the thin bipolar plate and by cross-linking.

A bipolar secondary battery has a battery element that includes first and second bipolar electrodes each having a collector disposed with a conductive resin layer containing a first resin as a base material and positive and negative electrode active material layers formed on opposite sides of the collector and a separator containing a second resin as a base material, arranged between the first and second bipolar electrodes and retaining an electrolyte material to form an electrolyte layer. The positive electrode active material layer of the first bipolar electrode, the electrolyte layer and the negative electrode active material layer of the second bipolar electrode constitute a unit cell. A melting point of the first resin is lower than or equal to a melting point of the second resin. Outer peripheries of the collectors of the first and second bipolar electrodes and an outer periphery of the separator are fused together to thereby seal an outer peripheral portion of the unit cell.

A method for producing a weather strip, includes an extrusion step for extruding a non-vulcanized and non-foamed rubber into a predetermined shape, a coating step for coating a treatment liquid containing a simple sulfur, a sulfur compound, or both of the simple sulfur and the sulfur compound on an outer surface of a sealing part of a non-vulcanized and non-foamed intermediate molded body that is molded by the extrusion step, and a vulcanizing and foaming step for forming a skin layer in a non-foamed state by heating and vulcanizing a surface of the treatment liquid, and forming a sponge layer by vulcanizing and foaming the non-vulcanized and non-foamed rubber that is internal from the skin layer by passing the intermediate molded body on which the treatment liquid has been coated during the coating step through a heating zone, the steps being performed when molding the extruded part.

A sealed honeycomb structure which can suppress increase of pressure loss and improve durability favorably is disclosed. A sealed honeycomb structure 100 including includes a honeycomb structure having porous walls dividedly forming inlet cells and outlet cells, an outlet side sealing portion, and an inlet side sealing portion, wherein an opening area of the inlet cell is larger than an opening area of an outlet cell on a cross-section of the honeycomb structure, wherein at least one outlet cell is a reinforced cell where a reinforcing part for reinforcing the outlet cell is formed at at least one corner portion at which the walls on a cross-section vertical to an extending direction of the cell cross each other, and wherein the inlet cell is a non-reinforced cell where the reinforcing part is not formed at all the corner portions at which the walls on the cross-section vertical to the extending direction of the cell cross each other.

A sealing ring for sealing a second component, which rotates in relation to a first component, for example for sealing a distribution channel of a rotary media distributor in a beverage filling system is described. The sealing ring includes an annular seal main body to be accommodated on the first component and a wear profiled element arranged radially within the seal main body for contacting the second component in a sealing manner, wherein the seal main body has at least one region of reduced radius in order to enable deformation of the seal main body as the seal main body is assembled with the first component.

A foot actuated pivoting lever is provided. The lever may include: a lever member having two ends, one end configured to attach to a mechanism configured to receive an input from the lever member; and a pedal pivotally attached proximate to the other end of the lever member, wherein the pedal is configured to pivot between a first and a second position, wherein in the first position, the pedal lies on top of a section of the lever member and, in the second position, the pedal extends beyond the lever member. A mechanism for actuating a piston may be provided.