Abstract: A fluid-filled vibration damping device including: a primary fluid chamber which gives rise to internal pressure fluctuations based on deformation of a main rubber elastic body at times of vibration input; an auxiliary fluid chamber which gives rise to pressure differentials relative to the primary fluid chamber at times of vibration input; an orifice passage which permits a non-compressible sealed fluid filling the primary fluid chamber and the auxiliary fluid chamber to flow between the two fluid chambers; and an insoluble powder mixed in the sealed fluid filling the primary fluid chamber which provides a bubble nucleus and accelerates dispersed generation of bubbles when pressure within the primary fluid chamber is decreased.

Abstract: A fluid-filled vibration damping device including: a primary liquid chamber which gives rise to pressure fluctuations based on deformation of a main rubber elastic body at times of vibration input; an auxiliary liquid chamber which gives rise to pressure fluctuations relative to the primary liquid chamber at times of vibration input; and an orifice passage that allows flow action of a scaled fluid between the primary liquid chamber and the auxiliary liquid chamber. The sealed fluid contains at least 0.03 volume % of a dissolved gas under atmospheric pressure at room temperature. A low-adhesion energy surface with a water contact angle of at least 90 degrees is provided on an inner surface of the primary liquid chamber.

Abstract: An excellent liquid-filled vibration damping device is provided, which is capable of effectively suppressing cavitation, which may otherwise cause abnormal noises, without impairing a vibration damping effect. The inventive liquid-filled vibration damping device includes a liquid-filled space partitioned into a primary liquid chamber and a secondary liquid chamber communicating with each other through an orifice, a molded vulcanized rubber member which defines at least a part of the liquid-filled space, and a first retention member and a second retention member retaining the molded vulcanized rubber member. Liquid (P) to be sealingly contained in the liquid-filled space comprises a polar organic solvent as a major component, and not less than 0.2 cm3 of a gas per 1 cm3 of the liquid as measured at an ordinary temperature at an atmospheric pressure is dissolved in the liquid.

Abstract: A fluid-filled vibration damping device including: a primary liquid chamber which gives rise to pressure fluctuations based on deformation of a main rubber elastic body at times of vibration input; an auxiliary liquid chamber which gives rise to pressure fluctuations relative to the primary liquid chamber at times of vibration input; and an orifice passage that allows flow action of a scaled fluid between the primary liquid chamber and the auxiliary liquid chamber. The sealed fluid contains at least 0.03 volume % of a dissolved gas under atmospheric pressure at room temperature. A low-adhesion energy surface with a water contact angle of at least 90 degrees is provided on an inner surface of the primary liquid chamber.

Abstract: A fluid-filled vibration damping device including: a primary fluid chamber which gives rise to internal pressure fluctuations based on deformation of a main rubber elastic body at times of vibration input; an auxiliary fluid chamber which gives rise to pressure differentials relative to the primary fluid chamber at times of vibration input; an orifice passage which permits a non-compressible sealed fluid filling the primary fluid chamber and the auxiliary fluid chamber to flow between the two fluid chambers; and an insoluble powder mixed in the sealed fluid filling the primary fluid chamber which provides a bubble nucleus and accelerates dispersed generation of bubbles when pressure within the primary fluid chamber is decreased.

Abstract: An excellent liquid-filled vibration damping device is provided, which is capable of effectively suppressing cavitation, which may otherwise cause abnormal noises, without impairing a vibration damping effect. The inventive liquid-filled vibration damping device includes a liquid-filled space partitioned into a primary liquid chamber and a secondary liquid chamber communicating with each other through an orifice, a molded vulcanized rubber member which defines at least a part of the liquid-filled space, and a first retention member and a second retention member retaining the molded vulcanized rubber member. Liquid (P) to be sealingly contained in the liquid-filled space comprises a polar organic solvent as a major component, and not less than 0.2 cm3 of a gas per 1 cm3 of the liquid as measured at an ordinary temperature at an atmospheric pressure is dissolved in the liquid.

Abstract: An authentication device enabling access from multiple directions, comprises a biometric information acquirer that acquires biometric information from a biometric target; a detector that detects direction of access by the biometric target; a memory that stores in advance therein a template for authentication; and an authenticator that authenticates the biometric target on the basis of the detected access direction information of the biometric target, biometric information acquired from the biometric target, and the template. The authenticator performs authentication using access direction information for the biometric target by carrying out conversion of acquired biometric information or the template, so that the access direction at the time of biometric information acquisition matches the access direction at the time the authentication template was acquired.

Abstract: A rubber member is provided which includes an aluminum-based inner metal tube (2) (aluminum-based metal component), a film (A) chemically formed on an outer peripheral surface of the inner metal tube (2), an adhesive layer (C) provided on an outer surface of the film (A), and a vibration damping rubber (1) provided on an outer surface of the adhesive layer (C). The film (A) contains manganese oxide and zirconium oxide. In the film (A), manganese from the manganese oxide is present in a content of 10 to 30 mg/m2 on a manganese atom weight basis, and zirconium from the zirconium oxide is present in a content of 5 to 40 mg/m2 on a zirconium atom weight basis. The film (A) is free from deterioration in adhesion to the aluminum-base metal component which may otherwise occur due to heat applied for vulcanization of a rubber material, and is excellent in followability to deformation of the aluminum-based metal component.

Abstract: An authentication device enabling access from multiple directions, comprises a biometric information acquirer that acquires biometric information from a biometric target; a detector that detects direction of access by the biometric target; a memory that stores in advance therein a template for authentication; and an authenticator that authenticates the biometric target on the basis of the detected access direction information of the biometric target, biometric information acquired from the biometric target, and the template. The authenticator performs authentication using access direction information for the biometric target by carrying out conversion of acquired biometric information or the template, so that the access direction at the time of biometric information acquisition matches the access direction at the time the authentication template was acquired.