(under subclass 1) Subject matter, as set forth in the (2)
Note, including use of means to propel a stream of fluent abrasive material to effect the abrading operation.
(1) Note. The stream may be propelled either by a compressed fluid (i.e., a gas or a liquid), a magnetic field, or a mechanical centrifugal device.
(2) Note. The fluent abrasive material herein may be sand or any other particulate material that will perform in like manner when propelled against a workpiece.
SEE OR SEARCH THIS CLASS, SUBCLASS:
38+, for a sandblasting process without condition responsive control.
75+, for a sandblasting apparatus without a condition responsive control means.