| US 7,518,301 B2 | ||
| Electron tubes | ||
| Yukihiko Shimizu, Mobara (Japan); Masao Saito, Mobara (Japan); Kinya Ueda, Mobara (Japan); Masahiro Nakayama, Mobara (Japan); and Kazushige Noguchi, Mobara (Japan) | ||
| Assigned to Futaba Corporation, Chiba-ken (Japan) | ||
| Filed on Jan. 14, 2005, as Appl. No. 11/35,545. | ||
| Claims priority of application No. 2004-011395 (JP), filed on Jan. 20, 2004. | ||
| Prior Publication US 2005/0156498 A1, Jul. 21, 2005 | ||
| Int. Cl. H01J 1/18 (2006.01) | ||
| U.S. Cl. 313—269 [313/279] | 13 Claims |
| 1. An electron tube comprising:
an envelope;
a linear member placed in the inside of said envelope;
a support member for supporting said linear member;
a vibration absorber engaged to said linear member; and
a position regulation member for regulating a moving range of said vibration absorber;
said vibration absorber being in the shape of a strip having a width in a direction of intersecting the longitudinal direction
of said linear member larger than a thickness of said vibration absorber and an aperture for permitting said vibration absorber
to hook said linear member so as to have said vibration absorber rested on said linear member at a position eccentric from
the barycenter of said vibration absorber.
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