Back to results
US 8,708,091 B2Granted
Corded hearing protective device and method of manufacturing the same
Assignee3M Innovative Properties Company
InventorRobert Franciszek Barwacz
Life of this patent
Estimating the term…
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.
Claims16
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, and
- a knot formed in the flexible elongated member;
- wherein the elongated member includes opposite first and second ends, and the knot comprises a circularly wound mid-portion having more than two circular windings, the first and second ends of the elongated member each forming a loop on one side of the circularly wound mid-portion and passing through a center of the circularly wound mid-portion to extend freely therefrom, and wherein the knot is untied and the circular windings unraveled by moving the first and second sound attenuating elements in a direction away from each other.
2 more elements
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;
- and
- tying a slip knot in the flexible elongated member;
- wherein the elongated member includes opposite first and second ends, and the knot comprises a circularly wound mid-portion having more than two circular windings, the first and second ends of the elongated member each forming a loop on one side of the circularly wound mid-portion and passing through a center of the circularly wound mid-portion to extend freely therefrom, so as to allow for untying of the knot and unraveling of the circular windings 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.