US PATENT SUBCLASS 72 / 53
BY SHOT-BLASTING
Current as of: June, 1999
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DEFINITION
Classification: 72/53
BY SHOTBLASTING:
(under the class definition) Subject matter comprising a step of, or means for, the forcible propulsion of discrete particles against a surface portion of work with random timing and trajectories.
(1) Note. The particles may be propelled by any means, including air or water jets.
(2) Note. The operation is usually termed "shotblasting" or more properly "shot peening", but is sometimes named for the desired effect in a particular case, e.g., hardening, sizing, upsetting, enlarging, etc. Any such teaching of metal deformation, whether or not accompanied by abrasion, is proper subject matter for this subclass. Process or apparatus for burnishing a work surface, by shotblasting or other means, is classifiable in Class 29 as indicated below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
40, for metal deformation combined with mechanical cleaning, descaling, or scouring, which may involve the application of sand or shot.
54+, for metal deformation by pressure transmitted through a coherent mass of fluent material (e.g., sand or shot), as distinguished from shotblasting.
SEE OR SEARCH CLASS
29, Metal Working, 90.01+, for burnishing a surface by shotblasting and see (2)
Note, above.
451, Abrading,
38+, for a process of sandblasting and subclasses 75+ for a machine for sandblasting.
