Abstract: A remotely controlled vibrating fishing lure. The lure has a body, a transmitter, a receiver, and a battery operated vibration member controlled by the receiver. The vibrating member may be contained in a fluid tight chamber in the lure body or placed in a housing adjacent the lure body. The transmitter is operable to selectively transmit an electromagnetic radio signal to the receiver to selectively vibrate the fishing lure. A conventional transmitter and receiver may be used, and the vibration member can be of the type traditionally used in telecommunications paging systems. The lure is adapted to float or the receiver antenna is provided with a bobber or other means to retain a portion of the antenna above the water.

Abstract: The present invention provides a process for producing a metal substrate for a thin film magnetic data storage disc, the process including the steps of: (a) providing a metal substrate; (b) printing a masking pattern onto at least a portion of the surface of the substrate; and (c) etching the unmasked surface of the substrate thereby to texture the substrate surface. The present invention also provides a metal substrate for a thin film magnetic data storage disc, the substrate having a roughened surface produced by preferential area etching, the roughened surface being composed of a regular pattern of peaks separated by valleys.

Abstract: A method to produce a microstructure on glass which is of excellent quality and allows for repeated use of a stamper. The method comprises heating the glass to a surface temperature corresponding to a log viscosity between about 13 to 8 poise, supporting the glass and impressing it with the stamper heated to about the same temperature as the glass so that a microstructure on the heated stamper will deform the surface of the glass to give a corresponding microstructure on the surface of the glass, which when separated from the stamper and cooled in a controlled manner gives the desired surface microstructure on the glass. The method is particularly suitable for forming tracking grooves on optical disk substrates.