The tissue paper box is formed into a simple shape by merely bending the flexible substrate.

Excitation of the transducer excites bending waves in the panel; the constraints discourage simple motion and encourage the production of a plurality of bending waves instead.

The putter may be used in a simple pendulum type putting stroke, with minimal wrist flexure.

The flexural stress of the molded object at a flexing amount 1.5 times the flexing amount which gives the maximum flexural stress is at least 1/5 the maximum flexural stress.

The framework defines a plurality of deflection conduits, at least one deflection conduit is a negatively radiused deflection conduit, and at least one deflection conduit is a positively radiused deflection conduit.

It is the rapid flexion and extension of the neck.

The bending element absorbs some of the displacement energy through bending.

Each set of flexure arms includes symmetric flexure arms.

Therefore, desired bending can be attained in the catheter with a simple structure and operability of the catheter in the tubular organ can be improved.

The supporting sections have first bending points (for example, bending points (50a, 50b)) and second bending points (for example, bending points (50p, 50q)).

To verify the absence of excessive bending of individual elements, a simple test is recommended.

The second flexural modulus is greater than the third flexural modulus.

The first bending axis and the second bending axis extend so that the engagement protrusion is located between the first bending axis and the second bending axis.

The bender transducer module comprises a bending element (2) and a clamping element (15; 25; 35), in which the bending element (2) is clamped.

The wings comprise an uncomplicated rigid skeleton adapted to enable flexing or spreading, and a web covering the skeleton.