| US 7,537,177 B2 | ||
| Level wound coil, method of manufacturing same, and package for same | ||
| Ken Horiguchi, Tsuchiura (Japan); Yusuke Takenaga, Inashiki-gun (Japan); Katsumi Nomura, Tsuchiura (Japan); Mamoru Hofuku, Inashiki-gun (Japan); Kenichi Inui, Tsuchiura (Japan); and Tomo Kawano, Ishioka (Japan) | ||
| Assigned to Hitachi Cable, Ltd., Tokyo (Japan) | ||
| Filed on Mar. 10, 2006, as Appl. No. 11/372,340. | ||
| Claims priority of application No. 2005-069932 (JP), filed on Mar. 11, 2005; and application No. 2005-367280 (JP), filed on Dec. 20, 2005. | ||
| Prior Publication US 2006/0208121 A1, Sep. 21, 2006 | ||
| Int. Cl. B65H 55/04 (2006.01) | ||
| U.S. Cl. 242—174 [242/476.7] | 3 Claims |
| 1. A level wound coil (LWC), comprising:
a plurality of coil layers, each of which comprises a pipe wound in alignment winding and in traverse winding, wherein a coil
of a (m+1)-th coil layer is located such that a pipe at a start position thereof is fitted into a concave part formed outside
of the m-th coil layer and between a pipe at a lower end of the m-th coil layer and an adjacent pipe of the m-th coil layer,
wherein, when the LWC is disposed on a mount surface perpendicular to a coil center axis of the LWC, m is an odd natural number
if a start position of the winding of the LWC is located at an upper end of the coil and m is an even natural number if the
start position of the winding is located at a lower end of the coil,
wherein the LWC comprises a shift section such that the pipe is shifted from the m-th coil layer to the (m+1)-th coil layer
on a bottom surface thereof when the LWC is disposed on the mount surface, and
wherein the shift section comprises a k-th shift section on an inner layer and a (k+1)-th shift section on an outer layer
side, wherein a start point of the (k+1)-th shift section transits, relative to a start point of the k-th shift section, in
a direction other than a winding direction of the pipe.
|