Vibrato arm and system
AssigneeTechnology Connections International Pty Ltd
InventorPeter Joseph Walker
Life of this patent
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Abstract
A manual vibrato control device, system and processing arrangement are disclosed. A manual vibrato includes a rotatable shaft, a raised cam section on the shaft, first and second biased collars received on the shaft either side of the cam section, the bias of the first collar being rotationally opposite to the bias of the second collar such that as the shaft rotates in one direction, it receives a return force from the first collar but does not rotate the second collar, and vice versa. Also disclosed are processing techniques to take the rotational data from rotational sensors, preferably Hall Effect, on the shaft and generate pitch change instructions for a pitch modification device. The mapping is user controllable to produce desired effects and performance.
Claims13
A manual vibrato control device adapted to generate rotational data for use with an electronic pitch modification system, the vibrato control device comprising a rotatable shaft, a raised cam section on the shaft, first and second collars received on the shaft either side of the cam section, each collar being rotatable relative to the shaft and having a resilient bias urging it towards a central position, the bias of the first collar being rotationally opposite to the bias of the second collar, the first and second collars engaging the cam section engaging at respective surfaces, such that as the shaft rotates in a first direction, it receives a return force from the first collar but does not rotate the second collar, and that as the shaft rotates in a second, opposite direction, it receives a return force from the second collar but does not rotate the first collar.
A method for returning a manual vibrato device to a central position, the manual vibrato device comprising a rotatable shaft, a raised cam section on the shaft, first and second collars received on the shaft either side of the cam section, each collar being rotatable relative to the shaft, the method comprising:
- a) providing a resilient rotational bias to the first collar urging it to the central position, and providing an opposite resilient rotational bias to the second collar urging it to the central position;
- b) providing shaped engagement surface on the cam section and the corresponding surfaces of the first and second collars;
- c) so that when the shaft is rotated in a first direction, it receives a return force from the first collar but does not rotate the second collar, and when the shaft is rotated in the second, opposite direction, it receives a return force from the second collar but does not rotate the first collar.
Dependencies are inferred from the claim text.