Coating apparatus – Projection or spray type – With mask or stencil
Patent
1977-01-21
1978-11-14
Stein, Mervin
Coating apparatus
Projection or spray type
With mask or stencil
118318, 118326, 118504, 277 34, 427233, B05B 1504
Patent
active
041250885
ABSTRACT:
A device for coating, with a carbon material, the inner surface of a cathode ray tube having a neck and flared or cone end portion which is opened at its end remote from the neck along a free peripheral edge portion to which the front panel of the completed cathode ray tube is later secured. The device includes a frame on which a turntable is rotatably mounted and supports, for rotation therewith, a seal assembly for selectively forming a seal on the inner surface of the flared portion of the cathode ray tube adjacent the free edge thereof. The tube is supported on the turntable adjacent the seal assembly along its peripheral edge, and the assembly includes an expandable seal strip generally complementary to the internal configuration of the tube along which the seal is to be formed, so that upon expansion of the seal strip a tight seal is formed against the tube. The device includes a coating mechanism, as for example spray nozzles for coating the inner surface of the tube after the seal is formed, whereby the seal prevents the sealed or masked portion of the tube from being coated with the coating material.
REFERENCES:
patent: 2619430 (1952-11-01), Fink
patent: 2646769 (1953-07-01), Lindsay
patent: 2763233 (1956-09-01), Hartley et al.
patent: 2775869 (1957-01-01), Pointer
patent: 3791846 (1974-02-01), Nuehring
patent: 3899994 (1975-08-01), Cook et al.
patent: 4029425 (1977-06-01), Pelsue
Boggs Ray
Hong Sung D.
Takei Shinzo
Eslinger Lewis H.
Sinderbrand Alvin
Sony Corporation
Stein Mervin
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