Coating apparatus – With vacuum or fluid pressure chamber
Patent
1976-10-26
1978-06-20
Newton, Dorsey
Coating apparatus
With vacuum or fluid pressure chamber
118411, B05C 502, B05C 1110
Patent
active
040955540
ABSTRACT:
A fluid dispenser and a support shoe are mounted to bear on opposite sides of a box blank passing therebetween. A normally closed valve of a nozzle of the dispenser has means yieldably biasing the nozzle to a normal position to intercept a leading edge of a box blank to open the valve upon deflection of the nozzle. A predetermined longitudinally spaced-apart gap relationship of the nozzle and support shoe effects return of the nozzle to normal position and closing of the valve, in response to the nozzle biasing means, concurrently with a trailing edge of the box blank leaving the support shoe, to wipe the closed nozzle clean on a deflected trailing end portion of the box blank. Alternatively, the support shoe may be rockably mounted for movement to a retracted position providing clearance for deflection of the trailing end portion of the box blank by the nozzle biasing means. An automatically controlled pneumatic power system may be employed for moving the rockable shoe between extended and retracted positions, synchronously with movement of box blanks therepast, for a skip pattern delivery of fluid.
REFERENCES:
patent: 3088433 (1963-05-01), Walter et al.
patent: 3190259 (1965-06-01), Craig et al.
patent: 3425393 (1969-02-01), Shuh et al.
Mueller Frederick E.
Newton Dorsey
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