| 摘要 |
A swivel cord-connector having a swivel head and a swivel tail connected via a swivel core. In an embodiment, a head assembly of the swivel core is enclosed in the swivel head and a tail assembly of the swivel core is enclosed in the swivel tail. In an embodiment, the swivel core includes at least a central conductor rod and one or more concentric conductor tubes, which may rotate along the longitudinal axis. In an embodiment, the swivel head has an asymmetrical structure for providing counter torque forces. In an embodiment, the swivel is waterproof and/or can float on water surface. |
| 主权项 |
1. A system comprising a cord-connector including at least:
a head having a noncircular cross section; a tail having a symmetrical structure, the tail being able to rotate with respect to the head, with friction between the tail and the head creating a torque, as the tail rotates, the torque impeding rotation of the tail with respect to the head and pushing the head to rotate with the tail; a core that electrically connects the head and the tail and maintains continuity of electricity when the tail rotates; and wherein the head is electrically connectable to a first power cord that is flexible, the first power cord carrying electricity into the head, wherein the tail is electrically connectable to a second power cord that is flexible, the second power cord carrying electricity out of the tail; wherein the noncircular cross section is a cross section on a plane cut through the head, the plane being perpendicular to an axis running along a length of the head from a connection on the head, via the core, to the tail to a location on the head where the head is connectable to the first power cord; wherein when the head rests on a surface, the noncircular cross section hindering the head from rotating with the tail, by the noncircular cross section of the head creating a counter torque that balances the torque that is created by the friction between the tail and head, the counter torque preventing rotation of the head with the tail despite the torque created by the friction, so that the tail rotates without the head rotating. |
