| Class Number |
Class Name |
No. of Patents |
| 137/78.1 |
Ambient condition change responsive |
31 |
| 137/78.5 |
Atmospheric |
24 |
| 137/81.1 |
Pressure |
57 |
| 137/79 |
Temperature |
170 |
| 137/80 |
With additional diverse control |
65 |
| 137/78.4 |
Burner gas cutoff |
21 |
| 137/78.2 |
For controlling soil irrigation |
58 |
| 137/78.3 |
Soil moisture sensing |
127 |
| 137/81.2 |
Underwater |
42 |
| 137/215 |
Back flow prevention by vacuum breaking (e.g., anti-siphon devices) |
15 |
| 137/216 |
Air vent in liquid flow line |
94 |
| 137/217 |
Valved |
50 |
| 137/218 |
With co-acting valve in liquid flow path |
229 |
| 137/216.1 |
With liquid seal in liquid flow line |
17 |
| 137/216.2 |
Automatic valve in vent line |
11 |
| 137/901 |
Biased ball valves with operators |
116 |
| 137/900 |
Bumpless manual to automatic relays |
1 |
| 137/560 |
Combined |
93 |
| 137/65 |
Combustion failure responsive fuel safety cut-off for burners |
23 |
| 137/66 |
Thermo-electric |
74 |
| 137/38 |
Control by change of position or inertia of system |
221 |
| 137/45 |
By pendulum or swinging member |
62 |
| 137/46 |
With servo connection to valve |
11 |
| 137/44 |
By shifting of liquid level |
18 |
| 137/40 |
Position relative body of water (e.g., marine governors) |
1 |
| 137/41 |
Float controlled |
5 |
| 137/42 |
Pressure or head controlled |
6 |
| 137/43 |
Vent opening or closing on tipping container |
302 |
| 137/39 |
With second control |
129 |
| 137/269 |
Convertible |
306 |
| 137/269.5 |
Reversible check |
30 |
| 137/270 |
Unit orientable in a single location between plural positions |
222 |
| 137/270.5 |
Reversible stop and vent or waste |
3 |
| 137/271 |
Units interchangeable between alternate locations |
210 |
| 137/904 |
Cushion check valves |
22 |
| 137/910 |
Destructible or deformable element constructed of specific material |
58 |
| 137/67 |
Destructible or deformable element controlled |
93 |
| 137/68.11 |
Destructible element |
107 |
| 137/68.12 |
Combined destructible and fusible element |
18 |
| 137/68.13 |
Explosive actuation |
121 |
| 137/70 |
Frangible element returns pressure responsive valve |
82 |
| 137/71 |
Having pressure responsive valve |
132 |
| 137/68.19 |
Rupture disc |
74 |
| 137/68.23 |
Direct pressure causes disc to burst |
115 |
| 137/68.25 |
Dome shape |
46 |
| 137/68.26 |
Reverse buckling |
63 |
| 137/68.24 |
Two-way rupture disc |
19 |
| 137/68.22 |
Disc burst after destruction of additional element |
27 |
| 137/68.28 |
Integral disc assembly |
39 |
| 137/68.29 |
Knife or cutter causes disc to break |
47 |
| 137/68.3 |
Movable knife or cutter |
57 |
| 137/68.21 |
Means for holding entire disc after rupture |
26 |
| 137/68.27 |
Specific weakening point |
83 |
| 137/68.14 |
Separable valve coupling or conduit |
110 |
| 137/68.15 |
Tensile or sheer pin or bolt |
44 |
| 137/68.16 |
Tensile or sheer pin or bolt |
20 |
| 137/68.17 |
Pressure causes pin or bolt to destruct |
17 |
| 137/68.18 |
With alarm or indicator |
31 |
| 137/69 |
With counterbalancing element |
25 |
| 137/72 |
Heat destructible or fusible |
150 |
| 137/74 |
In fluid flow path |
131 |
| 137/75 |
Safety cut-off |
137 |
| 137/77 |
With external closing means |
46 |
| 137/76 |
With heater for destructible or fusible element |
17 |
| 137/73 |
With second sensing means |
52 |
| 137/236.1 |
Distribution systems involving geographic features |
224 |
| 137/154 |
Diverse fluid containing pressure systems |
30 |
| 137/171 |
Fluid separating traps or vents |
54 |
| 137/197 |
Discriminating outlet for gas |
41 |
| 137/199 |
Fluid sensing valve |
50 |
| 137/202 |
Float responsive |
408 |
| 137/200 |
With vaporized liquid stop |
3 |
| 137/201 |
With separate return for condensate |
3 |
| 137/198 |
With reverse flow stop or pressure regulating valve |
15 |
| 137/177 |
Discriminating outlet for liquid |
33 |
| 137/178 |
With alternately operated inlet and outlet valves |
4 |
| 137/182 |
With auxiliary inlet or by-pass valve |
11 |
| 137/183 |
With fluid responsive valve |
40 |
| 137/185 |
Gas collecting float (e.g., inverted bucket) |
18 |
| 137/186 |
Downstream from valve |
2 |
| 137/187 |
Level responsive |
20 |
| 137/192 |
Float |
96 |
| 137/195 |
Servo-control |
30 |
| 137/193 |
With main line gas outlet from trap chamber |
3 |
| 137/194 |
With outlet extending above liquid in trap |
6 |
| 137/196 |
With pressure balanced outlet valve |
6 |
| 137/188 |
Weight or pressure |
9 |
| 137/189 |
Gravitating vessel |
2 |
| 137/190 |
Sinking or bucket type float |
3 |
| 137/191 |
Servo-control |
1 |
| 137/184 |
Successively opened valves |
5 |
| 137/179 |
With non-discriminating gas vent or liquid discharge |
12 |
| 137/180 |
Abnormal pressure responsive liquid blow-off or drain |
0 |
| 137/181 |
Manual control |
13 |
| 137/172 |
Liquids separated from liquid |
70 |
| 137/173 |
Plural discriminating outlets for diverse fluids |
17 |
| 137/175 |
Choke or restricted passage gas bleed |
6 |
| 137/176 |
From above liquid level |
5 |
| 137/174 |
Common actuator for control valves |
10 |
| 137/203 |
With liquid emptying means |
32 |
| 137/204 |
Self-emptying |
59 |
| 137/170.1 |
Foam control in gas charged liquids |
15 |
| 137/170.2 |
Level or pressure responsive |
7 |
| 137/170.3 |
Separate handling of foam |
3 |
| 137/170.4 |
With conditioning trap or chamber |
2 |
| 137/170.5 |
Recarbonation |
0 |
| 137/170.6 |
With trap or chamber by-pass |
1 |
| 137/155 |
Gas lift valves for wells |
61 |
| 137/156 |
Gas pressure discharge of liquids feed traps (e.g., to boiler) |
3 |
| 137/159 |
Gas pressure controlled by amount of liquid in trap |
0 |
| 137/165 |
Float responsive |
3 |
| 137/167 |
Gas condensing type |
2 |
| 137/168 |
Gas inlet and outlet valves unitary |
0 |
| 137/166 |
Liquid control valve positively actuated |
1 |
| 137/162 |
Gravitating vessel |
0 |
| 137/164 |
Pivoted vessel with fluid passage through pivot |
0 |
| 137/163 |
Sinking or bucket type float |
1 |
| 137/160 |
Plural trap chambers |
0 |
| 137/161 |
Gravitating |
0 |
| 137/157 |
Gas pressure controlled by amount of liquids in boiler or discharge receiver |
0 |
| 137/158 |
Pressure connection at liquid level in boiler or discharge receiver |
3 |
| 137/169 |
Gas pressure controlled by manual or cyclic means |
1 |
| 137/170 |
Movable trap chamber |
1 |
| 137/206 |
Gas pressure storage over or displacement of liquid |
37 |
| 137/208 |
Plural units |
43 |
| 137/207 |
Surge suppression |
61 |
| 137/209 |
With gas maintenance or application |
217 |
| 137/210 |
Gas carried by or evolved from liquid |
39 |
| 137/211 |
Gas injectors |
10 |
| 137/211.5 |
Gas injected by liquid pressure or flow |
7 |
| 137/212 |
Unitary mounting for gas pressure inlet and liquid outlet |
107 |
| 137/213 |
With liquid level responsive gas vent or whistle |
2 |
| 137/214 |
Combined high and low level responsive |
3 |
| 137/207.5 |
With return of liquid to supply |
7 |
| 137/205 |
Liquid filling by evacuating container |
235 |
| 137/205.5 |
Main line flow displaces additive from shunt reservoir |
47 |
| 137/801 |
Faucets and spouts |
392 |
| 137/803 |
Flow affected by fluid contact, energy field or coanda effect (e.g., pure fluid device or system) |
29 |
| 137/842 |
Device including linearly-aligned power stream emitter and power stream collector |
42 |
| 137/841 |
Device including passages having v over gamma configuration |
10 |
| 137/834 |
Device including passages having v over t configuration |
10 |
| 137/839 |
And enlarged interaction chamber |
8 |
| 137/835 |
And feedback passage(s) or path(s) |
53 |
| 137/838 |
And multiple or joined power-outlet passages |
5 |
| 137/840 |
And vent passage(s) |
23 |
| 137/836 |
With particular characteristics of control input |
17 |
| 137/837 |
Multiple control-input passages |
6 |
| 137/808 |
Means to cause rotational flow of fluid (e.g., vortex generator) |
34 |
| 137/812 |
By tangential input to axial output (e.g., vortex amplifier) |
40 |
| 137/813 |
With means to vary input or output of device |
50 |
| 137/809 |
Plural vortex generators |
29 |
| 137/810 |
Vortex generator as control for system |
63 |
| 137/811 |
Vortex generator in interaction chamber of device |
34 |
| 137/825 |
Means to regulate or vary operation of device |
21 |
| 137/829 |
By movable element |
35 |
| 137/831 |
Electrically-actuated element (e.g., electro-mechanical transducer) |
52 |
| 137/832 |
Means (e.g., valve) in control input |
18 |
| 137/830 |
Operating at timed intervals (e.g., to produce pulses) |
8 |
| 137/827 |
By non-fluid energy field affecting input (e.g., transducer) |
87 |
| 137/828 |
Acoustical or thermal energy |
93 |
| 137/826 |
To vary frequency of pulses or oscillations |
57 |
| 137/822 |
Plural power inputs to single device |
8 |
| 137/823 |
Intersecting at interaction region (e.g., comparator) |
3 |
| 137/824 |
Co-lineal, oppositely-directed power inputs (e.g., impact modulator) |
12 |
| 137/804 |
Responsive to condition external of system |
30 |
| 137/805 |
And causing change or correction of sensed condition |
30 |
| 137/833 |
Structure of body of device |
168 |
| 137/814 |
System comprising plural fluidic devices or stages |
21 |
| 137/815 |
Plural power inputs (e.g., parallel inputs) |
5 |
| 137/819 |
To cascaded plural devices |
21 |
| 137/820 |
With feedback passage(s) between devices of cascade |
12 |
| 137/821 |
With pulsed control-input signal |
8 |
| 137/816 |
Variable or different-value power inputs |
3 |
| 137/817 |
Pulsating power input and continuous-flow power input |
0 |
| 137/818 |
With variable or selectable source of control-input signal |
8 |
| 137/806 |
Utilizing diverse fluids |
59 |
| 137/807 |
Utilizing particular fluid |
65 |
| 137/797 |
Frangible |
87 |
| 137/59 |
Freeze condition responsive safety systems |
78 |
| 137/62 |
Low temperature responsive drains |
91 |
| 137/61 |
Stop and waste |
10 |
| 137/60 |
With freeze waste |
18 |
| 137/15.1 |
Highspeed fluid intake means (e.g., jet engine intake) |
121 |
| 137/15.2 |
With condition responsive control means |
31 |
| 137/272 |
Hydrant type |
36 |
| 137/289 |
Balanced valve |
2 |
| 137/281 |
Expansible chamber operated by valve actuator for draining riser |
13 |
| 137/286 |
Movable riser actuated valve |
1 |
| 137/287 |
Reciprocating riser |
4 |
| 137/288 |
Piston type valve |
4 |
| 137/280 |
Plural riser |
0 |
| 137/301 |
Protection against freezing |
51 |
| 137/302 |
Stop and waste |
16 |
| 137/307 |
Reciprocating relatively fixed valves |
16 |
| 137/308 |
Waste through lower valve guide |
0 |
| 137/304 |
Separate relatively movable valves with single actuator |
2 |
| 137/305 |
Unidirectional abutting connection between main valve or actuator and waste valve |
3 |
| 137/306 |
With screw or gear in actuating mechanism |
0 |
| 137/303 |
With disabling means |
0 |
| 137/283 |
Removable valve and valve seat |
10 |
| 137/284 |
With extension to facilitate removal |
0 |
| 137/285 |
Removable valve with supplemental check valve |
4 |
| 137/290 |
Valve actuator extends laterally from bottom of riser |
0 |
| 137/291 |
Valve actuator outside riser |
8 |
| 137/292 |
Lever actuator |
7 |
| 137/293 |
With casing, flush with ground or pavement surface |
1 |
| 137/273 |
Water crane type |
0 |
| 137/278 |
Extensible spout |
1 |
| 137/275 |
Rotating riser |
0 |
| 137/276 |
Spout articulated to riser |
0 |
| 137/277 |
Vertically movable riser |
0 |
| 137/279 |
Spout articulated to riser |
0 |
| 137/274 |
Spout operated valve |
2 |
| 137/298 |
With actuator lubricating means |
5 |
| 137/294 |
With casing |
7 |
| 137/296 |
Cap, cover or hood |
79 |
| 137/295 |
Flush with ground or pavement surface |
3 |
| 137/297 |
With heater |
6 |
| 137/282 |
With pump or ejector |
12 |
| 137/300 |
With supplemental valve |
6 |
| 137/299 |
With valve at outlet |
10 |
| 137/223 |
Inflatable article (e.g., tire filling chuck and/or stem) |
251 |
| 137/234.5 |
Removable valve head and seat unit (valve insides) |
30 |
| 137/230 |
Stem attached relief valve |
24 |
| 137/232 |
With cap |
50 |
| 137/233 |
Valve actuating, assembling or locking means on cap |
17 |
| 137/234 |
Valve manually seated |
6 |
| 137/231 |
With coupling means |
88 |
| 137/227 |
With gauge or indicator |
71 |
| 137/229 |
Selectively connected |
9 |
| 137/228 |
With deflating means |
27 |
| 137/224 |
With pressure-responsive pressure-control means |
96 |
| 137/226 |
Co-axial inflation and relief valves |
35 |
| 137/225 |
Diaphragm, bellows or expansible tube |
30 |
| 137/224.5 |
Pulsating |
5 |
| 137/219 |
Larner-johnson type valves; i.e., telescoping internal valve in expanded flow line section |
87 |
| 137/221 |
Internal servo-motor with internal pilot valve |
6 |
| 137/222 |
Pilot controlled passage in nose or needle |
4 |
| 137/220 |
Line condition change responsive |
43 |
| 137/455 |
Line condition change responsive valves |
20 |
| 137/493 |
Bi-directional flow valves |
166 |
| 137/493.9 |
Axes of ports co-axial |
163 |
| 137/493.8 |
Axes of ports parallel |
126 |
| 137/493.7 |
Axes of ports perpendicular |
30 |
| 137/493.1 |
One head and seat carried by head of another |
30 |
| 137/493.6 |
Both valves spring biased |
58 |
| 137/493.2 |
Supporting valve only spring biased |
37 |
| 137/493.3 |
Supporting valve spring carried by supporting valve |
56 |
| 137/493.5 |
Spring abuts guide for supported valve stem |
13 |
| 137/493.4 |
Spring stop on supported valve stem |
25 |
| 137/479 |
Combustion engine induction type |
3 |
| 137/484 |
Unbalanced pivoted valve (e.g., unbalanced butterfly type) |
1 |
| 137/480 |
Valve in auxiliary inlet to induction line |
20 |
| 137/481 |
With manual modifier |
1 |
| 137/483 |
With separate reactor surface |
2 |
| 137/482 |
With suction compensator |
1 |
| 137/467.5 |
Consistency responsive |
16 |
| 137/511 |
Direct response valves (i.e., check valve type) |
23 |
| 137/517 |
Biased open |
220 |
| 137/518 |
Oppositely swinging vanes |
6 |
| 137/521 |
Pivoted valves |
62 |
| 137/519 |
Weight biased |
40 |
| 137/519.5 |
Ball valves |
88 |
| 137/520 |
Edge pivoted valve |
6 |
| 137/515 |
In couplings for coaxial conduits, e.g., drill pipe check valves |
53 |
| 137/515.7 |
Valve seat clamped between coupling elements |
79 |
| 137/515.5 |
Valve seat formed on or carried by a coupling element |
79 |
| 137/515.3 |
Valve seat threaded into a coupling element |
7 |
| 137/527 |
Pivoted valves |
253 |
| 137/527.2 |
Head retained by removable closure |
24 |
| 137/527.4 |
Valve head movably connected for accommodation to seat |
63 |
| 137/527.6 |
Valve mounted on end of pipe |
61 |
| 137/527.8 |
Weight biased |
246 |
| 137/516.25 |
Plural seating |
58 |
| 137/516.27 |
Sequential |
59 |
| 137/516.29 |
Resilient gasket |
107 |
| 137/512 |
Plural |
217 |
| 137/512.3 |
Diverse types |
130 |
| 137/512.1 |
Dividing and recombining in a single flow path |
251 |
| 137/512.15 |
Integral resilient member forms plural valves |
205 |
| 137/512.4 |
Integral resilient member forms plural valves |
125 |
| 137/513 |
Mechanically interconnected |
29 |
| 137/512.2 |
One valve carries head and seat for second valve |
73 |
| 137/512.5 |
With common biasing means |
46 |
| 137/528 |
Reciprocating valves |
87 |
| 137/530 |
Cam means for adjusting and fixing bias |
24 |
| 137/529 |
Plural biasing means |
148 |
| 137/535 |
Spring biased |
55 |
| 137/539 |
Ball valves |
153 |
| 137/539.5 |
With follower |
71 |
| 137/538 |
Piston-type valves |
131 |
| 137/540 |
Spring coaxial with valve |
237 |
| 137/540.11 |
Broken valve parts retainer |
1 |
| 137/543.19 |
Cage-type guide for stemless valves |
79 |
| 137/543.21 |
Guide means integral and coplanar with valve disk |
57 |
| 137/543.23 |
Head between spring and guide |
69 |
| 137/543.15 |
Head slides on guide-rod concentric with spring |
64 |
| 137/543.13 |
Spring abuts removable valve stem guide |
48 |
| 137/543.17 |
Spring guides valve head |
77 |
| 137/541 |
Spring in inlet |
112 |
| 137/542 |
Valve stem extends through fixed spring abutment |
106 |
| 137/543 |
Yoke or cage-type support for valve stem |
44 |
| 137/537 |
Spring under tension |
27 |
| 137/536 |
With means to protect spring from fluid |
62 |
| 137/531 |
Varying effective lever arm |
7 |
| 137/532 |
Weight biased |
9 |
| 137/533 |
Valve body is the weight |
38 |
| 137/533.11 |
Ball valves |
144 |
| 137/533.13 |
Removable cage |
30 |
| 137/533.15 |
Separable seat |
43 |
| 137/533.17 |
Guided head |
59 |
| 137/533.19 |
Cage |
35 |
| 137/533.21 |
Guide stem |
34 |
| 137/533.31 |
Guide and closure integral unit |
37 |
| 137/533.29 |
Guide and seat integral unit |
16 |
| 137/533.27 |
Head slidable on guide rod |
30 |
| 137/533.25 |
Oppositely disposed |
22 |
| 137/533.23 |
With closing stop |
6 |
| 137/534 |
Weight coaxial with valve |
21 |
| 137/843 |
Resilient material valve |
144 |
| 137/860 |
Annulus |
76 |
| 137/851 |
Center flexing strip |
15 |
| 137/844 |
Having expansible port |
55 |
| 137/845 |
Apertured plate |
47 |
| 137/846 |
Having exit lip |
162 |
| 137/850 |
Internally extending mount |
26 |
| 137/849 |
Multiple slit |
80 |
| 137/848 |
Side vent |
16 |
| 137/847 |
With biasing means |
37 |
| 137/852 |
With valve member flexing about securement |
81 |
| 137/854 |
Central mount |
227 |
| 137/855 |
Flap or reed |
254 |
| 137/857 |
With spring |
52 |
| 137/856 |
With stop |
166 |
| 137/858 |
With weight |
8 |
| 137/859 |
Peripherally secured diaphragm |
173 |
| 137/853 |
Sleeve |
112 |
| 137/516.11 |
Single head, plural ports in parallel |
39 |
| 137/516.15 |
Annular head |
49 |
| 137/516.17 |
Central post on seat |
16 |
| 137/516.23 |
Guide |
12 |
| 137/516.19 |
Stop |
7 |
| 137/516.21 |
With guide |
24 |
| 137/516.13 |
Concentric ports |
34 |
| 137/526 |
Vacuum relief type |
116 |
| 137/524 |
With bias adjustment indicator |
20 |
| 137/522 |
With external means for opposing bias |
139 |
| 137/523 |
With means for retaining external means in bias opposing position |
56 |
| 137/513.3 |
With leak passage |
133 |
| 137/513.7 |
Bypass in valve casing |
67 |
| 137/513.5 |
Permits flow at valve interface |
118 |
| 137/516 |
With means for selecting area of valve or seat |
4 |
| 137/514 |
With retarder or dashpot |
133 |
| 137/514.3 |
End of valve forms dashpot chamber |
37 |
| 137/514.5 |
End of valve moves inside dashpot chamber |
71 |
| 137/514.7 |
Enlarged piston on end of valve stem |
64 |
| 137/467 |
Fluid opened valve requiring reset |
72 |
| 137/484.2 |
Line flow effect assisted |
31 |
| 137/484.4 |
Reactor surface normal to flow |
21 |
| 137/484.6 |
Reactor surface separated from flow by apertured partition |
11 |
| 137/484.8 |
Through separate aperture |
20 |
| 137/485 |
Pilot or servo controlled |
9 |
| 137/487.5 |
Electrically actuated valve |
674 |
| 137/488 |
Fluid pressure type |
166 |
| 137/489 |
Choked or throttled pressure type |
183 |
| 137/491 |
Choked passage through main valve head |
97 |
| 137/489.3 |
Loose fitting piston |
6 |
| 137/489.5 |
Pilot controls supply to pressure chamber |
75 |
| 137/490 |
Pilot valve within main valve head |
23 |
| 137/492 |
Single acting fluid servo |
77 |
| 137/492.5 |
<
