US PATENT SUBCLASS 451 / 75
.~ Sandblast

Current as of: June, 1999
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451 /   HD   ABRADING

64  DF  MACHINE {12}
75.~ Sandblast {13}
76  DF  .~.~> Hollow interior work
77  DF  .~.~> Spark plug
78  DF  .~.~> Electrical device
79  DF  .~.~> File
80  DF  .~.~> Having moving work holder {2}
85  DF  .~.~> Having tumbling barrel {1}
87  DF  .~.~> Having particle recovery means {1}
89  DF  .~.~> Having sandblast chamber
90  DF  .~.~> Having hand-directed sandblast nozzle
91  DF  .~.~> Abradant propulsion means {5}
99  DF  .~.~> Abradant supply structure {1}
101  DF  .~.~> Valve structure
102  DF  .~.~> Sandblast nozzle structure

DEFINITION

Classification: 451/75

Sandblast:

(under subclass 64) Abrading machine provided with 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.

SEE OR SEARCH CLASS

29, Metal Working, 90.1+, for a machine or process for burnishing (i.e., condensing, compacting, smoothing, or polishing the surface of a metallic or nonmetallic article), including subjecting it to shot blasting.

118, Coating Apparatus,

308+, for apparatus for projecting particulate coating material against work.

122, Liquid Heaters and Vaporizers,

393, for a sandblast boiler cleaner.

165, Heat Exchange,

94, for a heat exchanger with scraping means removing a product from an exchange surface.

175, Boring or Penetrating the Earth,

54, for means for forming a hole in the earth by below ground recirculation of unsupported elements (e.g., shot).

241, Solid Material Comminution or Disintegration,

5, for the process of comminuting and subclasses 39+ for a comminutor in which material is propelled by a fluid blast.

291, Track Sanders, for means for applying sand or like material to the wheel tread of a vehicle or to the surface over which that wheel tread is to pass. 406, Conveyors: Fluid Current, for a pneumatic conveyor in general.