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US 2014/0196727 A1Published application
Corded Hearing Protective Device And Method Of Manufacturing The Same
Assignee3M Innovative Properties Company
InventorRobert Franciszek Barwacz
Life of this patent
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Abstract
A hearing protective device is provided including a first sound attenuating element, a second sound attenuating element, a flexible elongated member connecting the first sound attenuating element and the second sound attenuating element, and a knot formed in the flexible elongated member, the knot is untied by moving the first sound attenuating element in a direction away from second sound attenuating element.
Claims17
A hearing protective device, comprising:
- a first sound attenuating element;
- a second sound attenuating element;
- a flexible elongated member connecting the first sound attenuating element and the second sound attenuating element, the flexible elongated member being in the form of a bundle such that a portion of the flexible elongated member forms more than two circular windings, and
- a knot formed in the flexible elongated member, the knot being a slip knot that maintains the flexible elongated member in the bundle, wherein the knot is untied and the bundle unraveled by moving the first and second sound attenuating elements in a direction away from each other.
1 more element
A method of manufacturing a hearing protective device, comprising:
- providing a first sound attenuating element;
- providing a second sound attenuating element;
- providing a flexible elongated member;
- attaching the first and second sound attenuating elements to opposing ends of the flexible elongated member;
- winding the flexible elongated member into a bundle;
- and
- tying a slip knot in the flexible elongated member so as to maintain the flexible elongated member in the wound bundle, such that a portion of the flexible elongated member forms more than two circular windings, and the first and second-sound attenuating elements extend from the bundle and so as to allow for untying of the knot and unraveling of the bundle by moving the first sound attenuating element in a direction away from the second sound attenuating element.
4 more elements
Dependencies are inferred from the claim text.