| Class Number |
Class Name |
Patents |
| 55/282 |
With nonliquid cleaning means for separating media |
96 |
| 55/306 |
Aircraft anti-ingestion means (e.g., aircraft debris guard) |
81 |
| 55/307 |
Filter or apertured deflector unit discontinuous across gas flow within flow conduit |
29 |
| 55/309 |
With separating media bypass or system gas pressure relief (e.g., rupturable or deformable) |
93 |
| 55/315 |
Plural serial basically diverse separating media |
133 |
| 55/338 |
With recycle means |
95 |
| 55/341.1 |
Multiple bag type filters in chamber |
234 |
| 55/342 |
Multiple separators, each with discrete and longitudinally confined gas inlet or outlet flow path |
65 |
| 55/351 |
With means for advancing clean portions of continuous or indefinite length separating media into gas stream |
52 |
| 55/355 |
With liquid trap seal or valve |
72 |
| 55/356 |
With means facilitating transportability or handling of apparatus |
259 |
| 55/358 |
With ground support means (nonflow conducting) |
24 |
| 55/359 |
With portion of cover removable |
35 |
| 55/360 |
With electrical grounding means |
34 |
| 55/361 |
Flexible or collapsible bag type |
43 |
| 55/383 |
With remote fan or pump and unconfined flow to separator |
15 |
| 55/385.1 |
Combined or convertible |
586 |
| 55/391 |
Restricted annular mixture inlet to collector zone around gas outlet conduit attached baffle |
25 |
| 55/392 |
With guide means effecting removal of constituent layer out of gas stream |
52 |
| 55/400 |
Mounted or supported for continuous motion |
104 |
| 55/410 |
With separated gas outflow control (e.g., apertured conduit) |
56 |
| 55/418 |
With inflow gas control or distribution |
261 |
| 55/421 |
With means for liquid separation |
61 |
| 55/422 |
Separating media adjustable to various positions of use or to nonuse |
102 |
| 55/423 |
Means within gas stream for conducting concentrate to collector |
110 |
| 55/424 |
With concentrate backflow or re-entrainment preventing means |
84 |
| 55/428 |
Residue access, handling or removing means |
110 |
| 55/434 |
Deflector |
62 |
| 55/466 |
With separated nongaseous material conducting or treating means |
314 |
| 55/467 |
With gas flow effecting means |
409 |
| 55/474 |
With particulate solids movement during use or agitating means therefor |
95 |
| 55/475 |
With means adjustable to control compactness of separating media |
43 |
| 55/476 |
With means introducing gas into midst of separating media |
41 |
| 55/477 |
Strands or bristles with unsupported or free extremities (e.g., brush type) |
33 |
| 55/478 |
With separate flow line access means or filter media passage means offset to flow path |
54 |
| 55/482 |
Two or more separators (e.g., spaced filters in flow line or casing) |
419 |
| 55/490 |
With means securing or retaining separating media |
132 |
| 55/520 |
Spiral filter media |
128 |
| 55/521 |
Zigzag, corrugated, or conical |
722 |
| 55/522 |
Specific media material |
174 |
| 55/529 |
Miscellaneous (e.g., shapes) |
157 |
| 55/DIG.1 |
Graduated electrostatic field |
4 |
| 55/DIG.10 |
Residue burned |
248 |
| 55/DIG.12 |
Pocket type filter |
39 |
| 55/DIG.13 |
Polyurethane filters |
29 |
| 55/DIG.14 |
Inertia separator |
55 |
| 55/DIG.15 |
Cold traps |
34 |
| 55/DIG.17 |
Compressed air water removal |
181 |
| 55/DIG.18 |
Work bench |
134 |
| 55/DIG.19 |
Crankcase ventilation |
60 |
| 55/DIG.2 |
Vacuum cleaner bags |
141 |
| 55/DIG.20 |
Spark arrester |
24 |
| 55/DIG.21 |
Silencer cleaner |
21 |
| 55/DIG.23 |
Steam separators |
19 |
| 55/DIG.24 |
Viscous coated filter |
17 |
| 55/DIG.25 |
Agglomerators |
92 |
| 55/DIG.26 |
Bag coupling |
27 |
| 55/DIG.27 |
Cleaners, liquid |
2 |
| 55/DIG.28 |
Carburetor attached |
169 |
| 55/DIG.29 |
Air curtains |
104 |
| 55/DIG.3 |
Vacuum cleaner |
554 |
| 55/DIG.30 |
Exhaust treatment |
943 |
| 55/DIG.31 |
Filter frame |
295 |
| 55/DIG.32 |
Gaseous fluid conveying |
10 |
| 55/DIG.33 |
Gas mask canister |
67 |
| 55/DIG.34 |
Indicator and controllers |
125 |
| 55/DIG.35 |
Respirators and register filters |
156 |
| 55/DIG.36 |
Kitchen hoods |
261 |
| 55/DIG.37 |
Louvers |
28 |
| 55/DIG.38 |
Tubular collector electrode |
75 |
| 55/DIG.39 |
Electrets separator |
167 |
| 55/DIG.42 |
Foam filter materials |
49 |
| 55/DIG.43 |
Knitted filter mediums |
30 |
| 55/DIG.44 |
Pile and pile-type filter mediums |
17 |
| 55/DIG.45 |
Woven filter mediums |
35 |
| 55/DIG.46 |
Spray booths |
204 |
| 55/DIG.5 |
Methods of making filter |
565 |
| 55/DIG.6 |
Magnetic couplings |
10 |
| 55/DIG.7 |
Black liquor treatment |
0 |
| 55/DIG.8 |
Built-in vacuum cleaners |
11 |
| 55/DIG.9 |
Radioactive filters |
69 |
