Abstract: [Object] A liquid agent application device capable of adjusting the displacement amount of a diaphragm is provided. [Solution] The liquid agent application device 10 includes a diaphragm 12 that changes the internal volume of a liquid agent reservoir 11, and a drive unit 13 located on the diaphragm 12. The drive unit 13 includes a driving piezoelectric element 20 that vibrates in response to application of a drive voltage signal, and a horn 21 that vibrates together with the driving piezoelectric element 20.

Abstract: [Problems] To provide a surface acoustic wave excitation device for efficiently exciting the surface acoustic wave on the surface of a material such as glass having free size and shape for making mechanical vibration available. [Means to Solve the Problems] The surface acoustic wave excitation device according to the present invention comprises a non-piezoelectric member 30 such as glass, a piezoelectric member 20, interdigital transducers 11 interposed between the non-piezoelectric member 30 and the piezoelectric member 20, and pre-pressurizing means 42 for pressing the piezoelectric member 20 onto the non-piezoelectric member 30 by way of the interdigital transducers. Alternating voltage is applied to the interdigital transducers 11 for exciting the surface acoustic wave on the non-piezoelectric member 30.

Abstract: The present invention relates to a method for vibration isolation featuring a two-part supporter made up of two supporters with positive and negative spring characteristics that are connected in series, and another supporter with positive spring characteristics that is installed in parallel with the two-part supporter. Vibration from the floor to the first member is isolated by the springs installed between the floor 1 and the first member 2; vibration transmitted from the first to the second member is isolated by the magnetic levitation mechanism 4 with zero-power characteristics comprising permanent magnets and electromagnets that are installed between the first member 2 and the second member 3 and by the load supporter 5 with positive spring characteristics that is installed between the base and the second member; and the load acting on the second member is supported by said magnetic levitation mechanism and said load supporter.

Abstract: [Problems] To provide a surface acoustic wave excitation device for efficiently exciting the surface acoustic wave on the surface of a material such as glass having free size and shape for making mechanical vibration available. [Means to Solve the Problems] The surface acoustic wave excitation device according to the present invention comprises a non-piezoelectric member 30 such as glass, a piezoelectric member 20, interdigital transducers 11 interposed between the non-piezoelectric member 30 and the piezoelectric member 20, and pre-pressurizing means 42 for pressing the piezoelectric member 20 onto the non-piezoelectric member 30 by way of the interdigital transducers. Alternating voltage is applied to the interdigital transducers 11 for exciting the surface acoustic wave on the non-piezoelectric member 30.