Vacuum tube provided with a line-shaped getter

Details Vacuum tube provided with a line-shaped getter Vacuum tube provided with a line-shaped getter

1996-11-05

1998-12-01

Patel, Ashok

Electric lamp and discharge devices

Cathode ray tube

Envelope

313495, 313497, 313422, 313559, H01J 1970

Patent

active

058443568

ABSTRACT:
A vacuum tube is provided with a line-shaped getter, which includes a holder (2) with a longitudinal axis, which holder (2) contains a getter material (3) over at least a part of its length, said getter being provided with clamping means to clamp the holder (2). The vacuum tube includes aligning means for exerting a torque about the longitudinal axis of the holder (2), said torque being as small as possible for a preferred orientation of the holder (2) relative to the clamping means. The clamping means preferably includes two leaf springs (7, 7'), which are bent so as to be S-shaped and which are provided with apertures (9, 9', 9") at locations where the leaf springs (7, 7') intersect, for passing the holder (2), and a member (6; 19) is provided on the holder (2) in a clamping manner and the clamping means are provided with an orientation surface (17, 17'; 18, 18'), which extends radially relative to the longitudinal axis of the holder (2). In this manner, during the activation of the getter, displacements of the holder (2) in a direction transverse to the longitudinal axis are precluded. Both constructions can be used independently and cause the position of the holder (2) to be more accurately defined relative to the other elements of the vacuum tube.

REFERENCES:
patent: 3939376 (1976-02-01), Reash
patent: 5350970 (1994-09-01), Vennix et al.
patent: 5541474 (1996-07-01), LaPeruta et al.

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