Rotary joint assembly and combination clip-hook and jewelry piece employing the same
This invention provides a combination clip and hook (clip) for use generally in suspending articles having shoulder or hand straps, or carrying other accessories, such as keys, which is rotatably movable about a rotary joint between a first position in which two opposing, rotatably joined portions of the overall clip structure are oriented together to form a continuous, enclosed shape that can be secured around another strap or loop on an item or piece of clothing, and a second position in which the two portions of the structure are rotated out of the enclosed shape, and into, for example, a substantially S-shaped hook in which one portion of the structure supports the strap of the item and the other portion can be applied to a clothing hook, chair back, table surface, door top, or other supporting member.
1. A movable enclosing structure comprising:
a first portion and a second portion, each of the first portion and the second portion being rotatably joined at a rotary joint at respective joint ends thereof, the first portion and the second portion each defining a perimeter shape wherein the first portion and the second portion define (a) an enclosed orientation when the joint is in a first rotational position with respective free ends of the first portion and the second portion in a confronting relationship and (b) an open orientation when the joint is in a second rotational position rotationally remote from the first rotational position; and
the joint including an index assembly that selectively maintains the first portion and the second portion in each of the first rotational position and the second rotational position with movement therebetween by application of predetermined rotational torque at the joint, and
wherein the joint includes, (a) at a first joint end on the first portion, a pair of prongs having an enlarged end and a shaft, and at least one of the prongs including a first interengaging formation thereon, and (b) at a second joint end on the second portion, a recess that receives the prongs with the enlarged end engaging an enlarged diameter inner wall of the recess, and at least a second interengaging formation on an inner wall of the recess movably confronting the first interengaging formation.
2. The enclosing structure as set forth in claim 1 wherein each of the first rotational position and the second rotational position are approximately 180 degrees rotationally remote from each other.
3. The enclosing structure as set forth in claim 2 each of the prongs includes the first interengaging formation.
4. The enclosing structure as set forth in claim 3 wherein the inner wall of the recess includes the second interengaging formation at each two remote positions.
5. The enclosing structure as set forth in claim 1 wherein the enlarged end defines a frustoconical shape tapering outwardly away from the first joint end.
6. The enclosing structure as set forth in claim 1 wherein the prongs are formed unitarily with the first portion.
7. The enclosing structure as set forth in claim 6 wherein the first portion and the prongs comprise a polymer.
8. The enclosing structure as set forth in claim 6 wherein the second portion defines a metal piece and the recess defines a polymer insert in the second joint end.
9. The enclosing as set forth in claim 1 wherein the first portion and the second portion define a loop in the closed position and a hook in the open position.
10. The enclosing structure as set forth in claim 9 wherein the free end of at least one of the first portion and the second portion includes a resilient pad.
11. The enclosing structure as set forth in claim 9 wherein the free end of the second portion overlies and overlaps the free end of the first portion in the closed position.
12. The enclosing structure as set forth in claim 1 wherein the first interengaging formation is a protrusion and the second interengaging formation if an indentation.
13. The enclosing structure as set forth in claim 12 wherein the indentation defines a shape and a size that approximately conforms with a shape and a size of the protrusion.
14. The enclosing structure as set forth in claim 13 wherein the protrusion defines an approximately triangular cross section shape.
15. The enclosing structure as set forth in claim 1 wherein the first portion and the second portion define an inner perimeter that, in the closed position, is sized and arranged to fit around a strap of a hand-carried bag.
16. The enclosing structure as set forth in claim 1 wherein the first portion and the second portion are constructed and arranged to define a solid jewelry piece in the closed position and enable removal of the jewelry piece in the open position.
17. The enclosing structure as set forth in claim 1 wherein the application of predetermined rotational torque at the joint further comprises application of torque by a user.
18. The enclosing structure set forth in claim 1 wherein the index assembly that selectively maintains the first portion and the second portion in each of the first rotational position and the second rotational position selectively maintains the first portion and the second portion in no more than two rotational positions, so that the first portion and the second portion rotate between the first rotational position and the second rotational position free of additional indexing positions.
19. The enclosing structure as set forth in claim 1 , wherein the torque required to disengage from the first position is greater than the torque required to move to the second position.