Clasp for securing personal item

1. A clasp for securing a personal item to a human wearer, comprising:

a first member;

a second member coupled with the first member at a first pivoting point;

a third member coupled with the first member at a second pivoting point; and

a fourth member coupled with the second member at a third pivoting point and coupled with the third member at a fourth pivoting point,

wherein the third and fourth members each have respective extensions that extend beyond the fourth pivoting point;

wherein the extensions of the third and fourth members are movable between a default closed position and an open position relative to each other, for respectively securing and releasing at least a portion of the personal item; and

wherein the first and second members include internal springs.

2. The clasp of claim 1 , wherein the extensions of the third and fourth members are configured to form a loop when in the default closed position, for securing the personal item.

3. The clasp of claim 2 , wherein the loop is generally ellipse-shaped or quadrilateral-shaped.

4. The clasp of claim 2 , wherein the extensions of the third and fourth members partially overlap one another when in the closed position.

5. The clasp of claim 1 , wherein the first and second members and portions of the third and fourth members are arranged to form a quadrilateral linkage.

6. The clasp of claim 5 , wherein the extensions of the third and fourth members move from the default closed position to the open position responsive to inward forces being applied to areas of the linkage generally corresponding to the second and third pivoting points.

7. The clasp of claim 1 , wherein the clasp is attachable to a necklace or chain at an end opposite the extensions of the third and fourth members.

8. The clasp of claim 1 , further comprising a ring, a hook, or a bail, coupled with the clasp at the first pivoting point.

9. The clasp of claim 1 , further comprising a bail coupled with the clasp at the first pivoting point, wherein the bail is rotatable.

10. The clasp of claim 9 , wherein the bail comprises:

a housing;

a tube sheath extending from a center of a bottom of the housing; and

a rotatable pin disposed within the tube sheath and the housing.

11. The clasp of claim 10 , wherein the bail comprises a ring coupling the rotatable pin with the first pivoting point.

12. The clasp of claim 10 , wherein the housing comprises one or more recesses on an inside bottom wall of the housing, and the rotatable pin includes a hook- shaped end that is rotatable within the housing and selectively movable in and out of the recesses.

13. The clasp of claim 9 , wherein the bail comprises a cylindrical housing and a rotatable pin disposed therein.

14. The clasp of claim 13 , wherein the bail comprises a ring coupling the rotatable pin with the first pivoting point.

15. The clasp of claim 14 , wherein an inside wall of the housing includes a recess and the rotatable pin comprises a protrusion corresponding to the recess.

16. The clasp of claim 1 , wherein the extensions of the third and fourth members are movable between a default closed position and an open position relative to each other, for respectively securing and releasing at least a portion of a pair of eyeglasses, a key, or a ring.

17. A clasp for securing a personal item to a human wearer, comprising:

a set of jaws movable between an open position and a closed position about a pivoting end of the jaws, the jaws sized and shaped to securely hold the personal item when in the closed position, the personal item selected from the group consisting of a pair of eyeglasses, a key, and a ring; and

a linkage coupled with the pivoting end of the jaws and configured to cause the jaws to move to the open position when manipulated in a first direction and to cause the jaws to move to the closed position when manipulated in a second direction,

wherein when the jaws are in the open position, the linkage is compressed transversely relative to the jaws.

18. The clasp of claim 17 , wherein when the jaws are in the closed position, the linkage is compressed longitudinally relative to the jaws.

19. A clasp for securing a personal item to a human wearer, comprising:

a set of jaws movable between an open position and a closed position about a pivoting end of the jaws, the jaws sized and shaped to securely hold the personal item when in the closed position, the personal item selected from the group consisting of a pair of eyeglasses, a key, and a ring;

the personal item; and

a linkage coupled with the pivoting end of the jaws and configured to cause the jaws to move to the open position when manipulated in a first direction and to cause the jaws to move to the closed position when manipulated in a second direction,

wherein the linkage comprises a quadrilateral linkage and the jaws form at least a portion thereof.

20. A clasp for securing a personal item to a human wearer, comprising:

a first member;

a second member coupled with the first member at a first pivoting point;

a third member coupled with the first member at a second pivoting point; and

a fourth member coupled with the second member at a third pivoting point and coupled with the third member at a fourth pivoting point,

wherein the third and fourth members each have respective extensions that extend beyond the fourth pivoting point,

wherein the extensions of the third and fourth members are movable between a default closed position and an open position relative to each other, for respectively securing and releasing at least a portion of the personal item, and

wherein the extensions of the third and fourth members move from the default closed position to the open position responsive to inward forces being applied to areas of the clasp generally corresponding to the second and third pivoting points.