Turret type frequency selector
AssigneeNihon Technical Kabushiki Kaisha
InventorHideki Ohshima
Life of this patent
Estimating the term…
Abstract
A frequency selector (tuner) employs a turret to select the position of a slide member that is coupled to a variable reactance. The slide member is moved away from the turret by depressing an operating member and returns to the turret when the operating member is released. Depressing the operating member rotates the turret concurrently with the movement of the slide member, but interference between the slide member and cooperating position setting elements that project from the turret is avoided by a displacement mechanism on the slide member. The projection of the position setting elements is adjusted by turning the operating member. A further operating member is provided for turning the turret in opposite directions, the final position of the slide member being set by depressing the first-mentioned operating member.
Claims22
Apparatus for selecting the position of a slide member, comprising a turret supported for rotation about an axis and having a plurality of circumferentially spaced position setting elements which project from an end of the turret toward the slide member, the slide member being supported for sliding movement toward and away from the position setting elements and being biased toward the position setting elements, the slide member having contact means adapted to engage a projecting end portion of a selected position setting element when that element is placed at a predetermined location by rotation of the turret, operating means for rotating the turret and concurrently moving the side member away from the position setting elements, and displacement means for movably supporting the contact means on the slide member to permit the contact means to move out of the way when struck by a position setting element as the turret is rotated and later to move into engagement with the end portion of the selected position setting element.
Apparatus for selecting the position of a slide member, comprising a turret supported for rotation about an axis and having a plurality of circumferentially spaced position setting elements which project from an end of the turret toward the slide member, the slide member being supported for sliding movement toward and away from the position setting elements and being biased toward the position setting elements, the slide member having contact means adapted to engage a projecting end portion of a selected position setting element when that element is placed at a predetermined location by rotation of the turret, operating means for rotating the turret, displacement means for movably supporting the contact means on the slide member to permit the contact means to move out of the way when struck by a position setting element as the turret is rotated and later to move into engagement with the end portion of the selected position setting element, and means for moving the slide member away from the position setting elements sufficiently to permit the contact means to clear the position setting element with the greatest projection from the turret, so that the contact means may engage the end portion of the selected position setting element when the slide member moves toward the position setting elements.
A frequency selector of the turret type, comprising:
- (a) a rotatable turret having a plurality of individually adjustable position setting elements;
- (b) a slide member coupled to a variable tuning element and adapted for resilient engagement with a selected position setting element;
- (c) a slidable operating member which is depressed to impart successive step-wise rotation to the turret so as to select the position setting element with which the slide member is to be brought into engagement;
- and
- (d) a displacement member on the slide member resiliently urged to maintain a normal position but movable from its normal position when struck by a position setting element as the turret is rotated, the slide member being brought into engagement with the selected position setting element via the displacement member.
Dependencies are inferred from the claim text.