Electric lamp and discharge devices – Photosensitive – Photomultiplier
Patent
1984-05-18
1986-03-18
DeMeo, Palmer C.
Electric lamp and discharge devices
Photosensitive
Photomultiplier
313536, 313261, H01J 4004, H01J 4326, H01J 1942
Patent
active
045771375
ABSTRACT:
A photomultiplier tube comprises an evacuated envelope having a photoemissive cathode, a shield cup spaced from the cathode and an electron multiplier cage assembly abutting the shield cup. The cage assembly includes a pair of transversely spaced support plates having a plurality of support slots formed therethrough. The support plates are attached to the shield cup. A plurality of electrodes are disposed between the support plates. At least one of the electrodes has reference apertures therein and a mesh member attached thereto which has locating slots aligned with the reference apertures. The electrodes have an active portion and attachment tabs which are disposed within the support slots in the support plates to support the electrodes therebetween. The electrodes also have support shoulders formed in opposite sides thereof between the active portion and the attachment tabs. The support shoulders have a width greater than that of the slots in the support plates, whereby the support shoulders provide stop locations adjacent to the support plates.
REFERENCES:
patent: Re30249 (1980-04-01), Faulkner
patent: 2862135 (1958-11-01), Payne
patent: 3119037 (1964-01-01), Stanley
patent: 4125793 (1978-11-01), Timan
patent: 4184098 (1980-01-01), Morales
patent: 4415832 (1983-11-01), Faulkner et al.
U.S. patent application entitled, "Photomultiplier Tube Having an Electron Multiplier Cage Assembly with Uniform Transverse Spacing", by A. F. McDonie et al., filed concurrently herewith, (RCA 80,965), Ser. No. 611,753.
U.S. patent application entitled, "Shield Cup to Cage Assembly Connecting Tab Member", by A. F. McDonie et al., filed concurrently herewith, (RCA 81,007) Ser. No. 611,873.
U.S. patent application entitled, "Photomultiplier Tube Having an Improved Centering and Cathode Contacting Structure", by D. B. Kaiser, filed concurrently herewith, (RCA 81,008), Ser. No. 611,958.
Coughlin Jr. Vincent J.
DeMeo Palmer C.
Irlbeck Dennis H.
RCA Corporation
Whitacre Eugene M.
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