Cathode ray tube with getter assembly
AssigneeU.S. Philips Corporation
InventorsBen Heinz Hageluken, João Gonçalves De Oliveira, Jr.
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Abstract
A cathode ray tube, which has a getter assembly (18) for providing proper vacuum conditions within the tube. The getter assembly (18) comprises a resilient strip (19) having a first end portion (23) and a second end portion (25), and is detachably secured to a high voltage contact (15). A getter cup (21) is connected to the first end portion (23). The second end portion (25) is cooperatively engaged with one, preferably two protrusions (30) for limiting lateral movements of the resilient strip (19). The protrusions (30) are provided inside the envelope (5) of the tube. This arrangement reduces the risk of obtaining a layer of getter material at the wrong location within the tube.
Claims4
A cathode ray tube comprising
- an envelope (5) having a conical portion (2), a high-voltage contact (15), a resilient strip (19) having a longitudinal direction and having first (23) and second (25) end portions which are detachably secured to the high-voltage contact (15) inside the envelope (5),
- the first end portion (23) comprising a getter cup (21),
- said envelope (5) having at least one protrusion (30) on its internal side,
- characterized in that
- the second end portion (25) is cooperatively engaged with the protrusion (30) for limiting lateral movements of the resilient strip (19).
Dependencies are inferred from the claim text.