Electric lamp and discharge devices – Photosensitive – Photomultiplier
Patent
1984-05-18
1986-03-11
DeMeo, Palmer C.
Electric lamp and discharge devices
Photosensitive
Photomultiplier
313261, 313536, H01J 4004, H01J 4326, H01J 1942
Patent
active
045756570
ABSTRACT:
A photomultiplier tube comprises an evacuated envelope including a faceplate and a sidewall. A conductive coating is disposed annularly around an interior portion of the sidewall adjacent to the faceplate and on a longitudinally extending portion of the sidewall as a strip. A photoemissive cathode is disposed on an interior surface of the faceplate and on the conductive coating adjacent thereto. A shield cup is spaced from the cathode and centered within the envelope by a plurality of bulb spacers. An electron multiplier cage assembly abuts the shield cup and is attached thereto. A cathode contact assembly is in contact with the strip on the sidewall. A plurality of locating slots are formed in the base of the shield cup to orient the bulb spacers in contact with the sidewall of the envelope and spaced from the longitudinally extending strip portion of the conductive coating thereon. The bulb spacers include stop shoulders which retain the bulb spacers within the locating slots. The cathode contact assembly includes a cathode contact support member and a resilient cathode contact member. The cathode contact support member includes an electrical contact tab struck from the body thereof and a cathode support tab which includes an extruded area to circumferentially locate the resilient cathode contact member between two consecutively spaced bulb spacers and to align the resilient cathode contact member with the longitudinally extending strip portion of the conductive coating on the sidewall of the envelope.
REFERENCES:
patent: Re30249 (1980-04-01), Faulkner
patent: 2121636 (1938-06-01), Koller
patent: 2137571 (1938-11-01), Glauber
patent: 2160593 (1939-05-01), Kling
patent: 2829293 (1958-04-01), Widmaier
patent: 2868994 (1959-01-01), Anderson
patent: 2880344 (1959-03-01), Stoudenheimer
patent: 4370585 (1983-01-01), Butterwick
patent: 4426596 (1984-01-01), Butterwick
patent: 4446401 (1984-05-01), Faulkner et al.
patent: 4447758 (1984-05-01), Faulkner et al.
U.S. Patent Application, by A. F. McDonie et al., entitled, "Shield Cup to Cage Assembly Connecting Tab Member", filed concurrently herewith (RCA 81,007), Ser. No. 611,873.
U.S. Patent Application, by A. F. McDonie et al., entitled, "Photomultiplier Tube Having an Electron Multiplier Cage Assembly with Uniform Transverse Spacing", filed concurrently herewith (RCA 80,965), Ser. No. 611,753.
U.S. Patent Application, by D. B. Kaiser, entitled, "Electrode Structure for an Electron Multiplier Cage Assembly", filed concurrently herewith (RCA 80,966), Ser. No. 611,754.
Coughlin Jr. Vincent J.
DeMeo Palmer C.
Irlbeck Dennis H.
RCA Corporation
Whitacre Eugene M.
LandOfFree
Photomultiplier tube having an improved centering and cathode co does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photomultiplier tube having an improved centering and cathode co, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photomultiplier tube having an improved centering and cathode co will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2192766