Sandblast nozzle with wear resistant sealing device and lock-on

Details Sandblast nozzle with wear resistant sealing device and lock-on Sandblast nozzle with wear resistant sealing device and lock-on

1991-12-04

1993-05-11

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Including valve means in flow line

Reciprocating

239530, 51427, 51438, 51439, 251299, B24C 502

Patent

active

052094090

ABSTRACT:
A sandblast nozzle is provided with a wear resistant sealing device and a lock-on mechanism. A lever arm is pivotally positioned with respect to a ceramic nozzle. A sealing member is maintained at the end of the lever arm. The sealing member consists of a rubber sealing surface having a wear piece along at least one peripheral edge thereof, that peripheral edge being the first to engage a stream of sand from the nozzle during the closing operation. The wear piece is preferably of hardened steel or ceramic. Square or rectangular seal blocks are employed in the concept of the invention, along with cylindrical seal blocks and discs. Additionally, a lock ring may be maintained upon the sandblast nozzle assembly and rotatable with respect to the axis thereof to engage the lever in an "open" position, to override the biasing of a spring which normally urges the lever to a "closed" position.

REFERENCES:
patent: 191964 (1877-06-01), Holloway
patent: 2852310 (1958-09-01), Francis
patent: 3047986 (1962-08-01), McKulla, Jr.
patent: 3618263 (1971-11-01), Weijsenburg
patent: 4269359 (1981-05-01), Neiss
patent: 4286755 (1981-09-01), Shipman
patent: 4947589 (1990-08-01), Zwicker

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