VACUUM INTERRUPTER
Number of patents in Portfolio can not be more than 2000
United States of America
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N/A
Issued Date -
Apr 7, 2022
app pub date -
Feb 6, 2019
filing date -
Feb 6, 2019
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
A vacuum interrupter (1) is equipped with a vacuum container (2) and a fixed electrode (3) and a movable electrode (4), which are provided in the vacuum container (2). The vacuum container (2) is constructed by hermetically joining a fixed-side end plate (6) to one end portion of an insulating tube (5) and by hermetically joining a movable-side end plate (7) to the other end portion of the insulating tube (5). The insulating tube (5) is equipped at its end portion with a projection portion (5a) that projects in an axial direction of the insulating tube (5) along an outer periphery of the insulating tube (5). The insulating tube (5) is equipped at its end portion with an end plate joining portion (5b) that projects from a base end portion of the projection portion (5a) in an inner peripheral direction of the insulating tube (5). The end plate joining portion (5b) is equipped on its surface with a metallized layer (8) to which the fixed-side end plate (6) (or the movable-side end plate (7)) is joined by brazing. The metallized layer (8) is equipped with a joining portion (8a) that extends in a radial direction of the insulating tube (5), and an extension portion (8b) that extends in an axial direction of the insulating tube (5) from an end portion of the joining portion (8a) on an inner peripheral side of the insulating tube (5).
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