Class 251: VALVES AND VALVE ACTUATION ( Manual of U.S. Patent Classification )

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Manual of U.S. Patent Classification
as of June 30, 2000


Class
251
VALVES AND VALVE ACTUATION


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Subclass Title
ClassTitle ===> VALVES AND VALVE ACTUATION
1.1[Patents]BLOW-OUT PREVENTERS (I.E., COOPERATING SEGMENTS OF ANNULUS)
1.2[Patents] . Deformable annulus
1.3[Patents] . Radial reciprocating ram
3[Patents]PATTERN TRACER CONTROLLED ACTUATOR
4[Patents]TUBE COMPRESSORS
5[Patents] . Fluid pressure actuated
6[Patents] . Roller tube contacting element
7[Patents] . Perpendicularly reciprocating tube contacting element
8[Patents] . . Screw actuated
9[Patents] . Pivoting tube contacting element
10[Patents] . . U-shaped resilient bar or rod
11[Patents]HEAT OR BUOYANCY MOTOR ACTUATED
12[Patents]FLUID ACTUATED OR RETARDED
14[Patents] . Fluid and non-fluid actuators
15[Patents] . Compulsory cut-off after flow period
16[Patents] . . Serial main line cut-off and manual valves (e.g., hydraulic "fuses")
17[Patents] . . . Interconnected motion
18[Patents] . . . . Manual and pilot valves
19[Patents] . . Auxiliary pilot valve overrides a first pilot valve
20[Patents] . . Forced return of actuator to cut-off position
21[Patents] . . Actuator connection released on opening of cut-off valve
22[Patents] . . Control fluid released into closed build-up chamber
23[Patents] . . Dashpot interconnects actuator and valve
24[Patents] . Venturi or line flow effect assisted
25[Patents] . Pilot or servo type motor
26[Patents] . . Alternative pressure sources or pilot valve
27[Patents] . . Servo failure responsive control of main valve
28[Patents] . . Fluid actuated pilot valve
29[Patents] . . . With additional pilot valve control
30.01[Patents] . . Electrically actuated pilot valve
30.02[Patents] . . . Main valve biased closed by fluid pressure
30.03[Patents] . . . . Venting passage within movable main valve
30.04[Patents] . . . . . Pilot valve movably mounted within or around main valve
30.05[Patents] . . . . Fluid pressure sole means for biasing valve closed
31[Patents] . . Double or oppositely acting motor units
32[Patents] . . Latched pilot valve
33[Patents] . . Choked pressure type servo motor
34[Patents] . . . With reverse flow prevenging (nonsiphoning)
35[Patents] . . . Variable choke passage according to valve position
36[Patents] . . . With separate dashpot or choked fluid retarding chamber
37[Patents] . . . With choke or restrictor in main line
38[Patents] . . . Pilot valve seated in motor or valve element
39[Patents] . . . . Controls inlet to choke chamber
40[Patents] . . . . Tilting pilot valve
41[Patents] . . . Remote pilot valve actuation
42[Patents] . . . Adjustable opening limit for main valve
43[Patents] . . . Main valve biased open by line pressure
44[Patents] . . . . Differential reaction surface for line pressure
45[Patents] . . . . . Diaphragm or bellows surface
46[Patents] . . . . Diaphragm or bellows motor element
47[Patents] . . With separate dashpot or choked fluid retarder
48[Patents] . Dashpot or fluid controlled retarder or timer
49[Patents] . . Latch or trip releasing
50[Patents] . . Line pressure connected dashpot or choke chamber
51[Patents] . . . With choke by-pass or relief means
52[Patents] . . . Chamber fills on closing of main valve
53[Patents] . . Line connected open accumulating chamber
54[Patents] . . Closed fluid circuit dashpot or choke chamber
55[Patents] . . With choke by-pass or relief means
56[Patents] . Plural operations (e.g., lifting and rotating rotary valve)
57[Patents] . Fluid link or column actuator
58[Patents] . With mechanical movement between actuator and valve
59[Patents] . Rotary or oscillatory motor
60[Patents] . With adjustable limit stop for actuator
61[Patents] . Flexible wall expansible chamber reciprocating valve actuator
61.1[Patents] . . Flexible wall valves fluid
61.2[Patents] . . Coaxial actuator, seat and valve
61.3[Patents] . . . Valve between coaxial spring biasing means and actuator
61.4[Patents] . . . Coaxial spring biasing means between valve and actuator
61.5[Patents] . . . Actuator wall between valve and coaxial spring biasing means
62[Patents] . Piston type expansible chamber reciprocating valve actuator
63[Patents] . . Unitary piston and valve
63.4[Patents] . . Lost motion, abutment or resilient connection between actuator and valve
63.5[Patents] . . Coaxial actuator, seat and valve
63.6[Patents] . . . Coaxial spring biasing means between valve and actuator
64[Patents]WITH NON-FLUID RETARDER
65[Patents]PERMANENT OR CONSTANTLY ENERGIZED MAGNET ACTUATOR
66[Patents]BIASED TRIP
67[Patents] . With second diverse control
68[Patents] . Electrical trip actuation
69[Patents] . . Trip operated on failure of electric power
70[Patents] . . With electrical resetting means
71[Patents] . . . Rotary electric motor
72[Patents] . Weight biased trip
73[Patents] . Fluid pressure trip actuation
74[Patents] . Mechanical movement trip actuation
75[Patents]WITH SNAP ACTION
76[Patents]IMPACT TYPE ACTUATOR
77[Patents]LOST MOTION BETWEEN ACTUATOR AND VALVE
78[Patents] . Lever
79[Patents] . Overload release
80[Patents] . . Elastic
81[Patents] . . Slip coupling between actuator and valve
82[Patents] . Check valve with external opening and closing means
83[Patents] . . Spring
84[Patents]VALVE HEAD MOVABLY CONNECTED FOR ACCOMMODATION TO SEAT
85[Patents] . With yieldable connection
86[Patents] . With universal connection
87[Patents] . With single plane swing pivoted connection
88[Patents] . Rotatable only
89[Patents]WITH MEANS FOR BLOCKING OR DISABLING ACTUATOR
89.5[Patents] . Actuator, or blocking means, includes flow path joint
90[Patents] . Attachments
91[Patents] . . Requiring modification of valve
92[Patents] . . Acting on valve limit stop
93[Patents] . . . Mounted on valve actuator
94[Patents] . Fluid pressure biased latch
95[Patents] . Released by non-valving actuator motion
96[Patents] . . Linear reciprocation of rotary handle
97[Patents] . . . Latch connects actuator to body through head
98[Patents] . . Pivoted handle
99[Patents] . . . With spring
100[Patents] . . Rotation of reciprocating handle
101[Patents] . Latch manipulator mounted on handle or stem
102[Patents] . . Constrained linear motion
103[Patents] . . . With pivoted latch
104[Patents] . . . With latch rigidly associated with manipulator
105[Patents] . . . . Latch lug extends transversely to axis of manipulator
106[Patents] . . . With transversely movable latch
107[Patents] . . With pivoted latch
108[Patents] . . . Resilient latch and manipulator
109[Patents] . . . With spring
110[Patents] . . With reciprocating latch
111[Patents] . Latch manipulator mounted on valve body
112[Patents] . . Set screw
113[Patents] . . Constrained linear motion of latch with rigidly associated manipulator
114[Patents] . . With pivoted latch
115[Patents] . . . Resilient latch and manipulator
116[Patents] . . . With spring
117[Patents]WITH RESTRICTOR IN PARALLEL TO MAIN VALVE
118[Patents]WITH MATERIAL GUIDE OR RESTRICTOR
119[Patents] . Aspirated stem drain
120[Patents] . Movable or resilient guide or restrictor
121[Patents] . . Adjustable guide or restrictor
122[Patents] . . . Tapered metering plug
123[Patents] . Valve at point of greatest restriction
124[Patents] . . Venturi restrictor
125[Patents] . Drop forming restrictor
126[Patents] . Spiral guide or spiral restrictor
127[Patents] . Baffle or zigzag flow restrictor
128[Patents]WITH DETACHABLE ACTUATOR AND MEANS TO PREVENT LEAKAGE WHEN ACTUATOR IS DETACHED
129.01[Patents]ELECTRICALLY ACTUATED VALVE
129.02[Patents] . With means to bias valve open
129.03[Patents] . With nonelectrical actuator
129.04[Patents] . Remote or follow-up control system for electrical actuator
129.05[Patents] . Having means to produce digital pulses
129.06[Patents] . Having element dimensionally responsive to field
129.07[Patents] . Balanced valve
129.08[Patents] . Having means to produce proportional flow
129.09[Patents] . Solenoid having plural coils
129.1[Patents] . . Coils have common axis
129.11[Patents] . Rotary electric actuator
129.12[Patents] . . With limit control
129.13[Patents] . . With speed or braking control
129.14[Patents] . Freely rotatable ball valve
129.15[Patents] . Including solenoid
129.16[Patents] . . Having plate-shaped armature
129.17[Patents] . . Having diaphragm between coil and opening controlled
129.18[Patents] . . With means to adjust stroke of armature
129.19[Patents] . . Lost motion between valve and valve actuator
129.2[Patents] . . Mechanical movement between valve and solenoid
129.21[Patents] . . Coil surrounds valve port or flow line
129.22[Patents] . . Solenoid within flow line
142[Patents]WITH CORRELATED FLOW PATH
149[Patents] . Valve operated by joining flow path sections
149.1[Patents] . . Joining motion includes linear valve operating component
149.2[Patents] . . . Valve rotatably or hingedly mounted
149.3[Patents] . . . Valve motion is transverse to, or opposed to, the linear component
149.4[Patents] . . . Joint includes screw thimble
149.5[Patents] . . . Of rotatable flow path section
149.6[Patents] . . . Motion opposed by valve spring
149.7[Patents] . . . . Contact only, or friction, joint
149.8[Patents] . Valve operated by motion of flow path
149.9[Patents] . Flow path joint interlocked with valve or actuator
144[Patents] . Tank
145[Patents] . Pipe side
146[Patents] . . Clamp type coupling
147[Patents] . Pipe end (terminal valve)
148[Patents] . Pipe coupling or union
150[Patents] . . Flexible or expansible
151[Patents] . . Non-rotatable conduit coupling
152[Patents] . . Valve seat and coupling element removable as a unit
143[Patents] . With mounting or support
153[Patents] . With particular outlet or inlet
154[Patents] . . Fluid deflecting means at outlet
155[Patents] . . Nozzle or spout
156[Patents] . . . With receptacle accommodating feature
157[Patents]WITH MEANS TO INCREASE HEAD AND SEAT CONTACT PRESSURE
158[Patents] . With positive reduction
159[Patents] . . Seat pressed to valve
160[Patents] . . Rotary valve
161[Patents] . . . Independent actuation
162[Patents] . . . Cam or wedge
163[Patents] . . . . Encased
164[Patents] . . . Screw
165[Patents] . . . . Non-reciprocating
166[Patents] . . . . . With slip coupling
167[Patents] . . Bifaced
168[Patents] . . . Screw
169[Patents] . . . Toggle
170[Patents] . Seat pressed to valve
171[Patents] . . Packing presed by gland
172[Patents] . . Fluid pressure
173[Patents] . . . Butterfly valve
174[Patents] . . Spring
175[Patents] . Fluid pressure
176[Patents] . Spring
177[Patents] . . Pivoted valve
178[Patents] . . . Bifaced
179[Patents] . . . Terminal
180[Patents] . . Rotary valve
181[Patents] . . . Plug
182[Patents] . . . . Expanding
183[Patents] . . . . Encased
184[Patents] . . . . . At actuator end
185[Patents] . . . Spring in fluid
186[Patents] . . Piston
187[Patents] . Separate actuators or actuator motion
188[Patents] . . Rotary valve
189[Patents] . . Piston with expansible packing
190[Patents] . Piston
191[Patents] . . Packing expands with closing
192[Patents] . Rotary valve
193[Patents] . Gate valve
194[Patents] . . Screw sole actuator of expander and valve
195[Patents] . . Bifaced
196[Patents] . . . In both closed and open positions
197[Patents] . . . Faces pressed by subsequently movable expander
198[Patents] . . . . With second expander
199[Patents] . . . . Face element directly contacts casing
200[Patents] . . . Carried expander contacts valve casing
201[Patents] . . . . Pivoting expander
202[Patents] . . . Faces or carrier contact stationary expander
203[Patents] . . Cam or wedge
204[Patents] . . . Moves with respect to head and seat
205[Patents]WITH SELECTIVE FLOW REGULATION
206[Patents] . Different sized bores in valve head
207[Patents] . . Rotary plug
208[Patents] . Rotary
209[Patents] . . Plug
210[Patents]SEQUENTIAL OPENING OR CLOSING OF SERIAL PORTS IN SINGLE FLOW LINE (E.G., ANTI-SCORING)
211[Patents]SERIAL ALTERNATELY CLOSED PORTS
212[Patents]RELATIVELY MOVABLE VALVE ELEMENTS FORM SINGLE PORT CLOSURE (E.G., IRIS DIAPHRAGM)
213[Patents]MECHANICAL MOVEMENT ACTUATOR
214[Patents] . Particularly packed or sealed
215[Patents] . Plural motions of valve
216[Patents] . . Screw threads in flow path
217[Patents] . . Valve head between actuator and screw
218[Patents] . . Encased
219[Patents] . . . Threadlessly coupled to screw
220[Patents] . . . . Coupling socket in screw
221[Patents] . . . Threads in removable sleeve
222[Patents] . . . . Sleeve removably in bonnet
223[Patents] . . . . Sleeve is bonnet
224[Patents] . . . . Sleeve flange mounted between body and bonnet
225[Patents] . . Threads in removable sleeve
226[Patents] . . Biased
227[Patents] . . . Spring
228[Patents] . With pivoted valves
229[Patents] . Plural dissimilar mechanical movements
230[Patents] . Ratchet
231[Patents] . Lever
232[Patents] . . Train (plural serial)
233[Patents] . . Leverage variable during operation
234[Patents] . . Adjustable leverage
235[Patents] . . Swiveled
236[Patents] . . Biased
237[Patents] . . . Sliding contact
238[Patents] . . . . Spring
239[Patents] . . . . . Spring co-axial with valve arm
240[Patents] . . . . . . Spring stop on valve stem
241[Patents] . . . . . . Spring abuts valve stem guide
242[Patents] . . . Spring
243[Patents] . . . . Co-acts with lever
244[Patents] . . . . Co-axial with valve stem
245[Patents] . . . . . Spring stop on valve stem
246[Patents] . . . . . Spring abuts valve stem guide
247[Patents] . . . Weight
248[Patents] . Gear
249[Patents] . . Mutilated or Geneva gearing
249.5[Patents] . . Worm type
250[Patents] . . Rectilinear rack
250.5[Patents] . . Mating segments
251[Patents] . Cam
252[Patents] . . Co-axial or parallel axes
253[Patents] . . . Biased
254[Patents] . . . . Bi-directional
255[Patents] . . . . . Non-reciprocating
256[Patents] . . . . Encased
257[Patents] . . Encased with seal
258[Patents] . . . Bi-directional
259[Patents] . . . Cam is finger-like extension
260[Patents] . . . Overhung crank type
261[Patents] . . . Center crank type
262[Patents] . . Biased
263[Patents] . . . Spring
264[Patents] . Screw
265[Patents] . . Plural thread
266[Patents] . . Non-reciprocating actuator
267[Patents] . . . Internal thread
268[Patents] . . . . Inverted cup-shape
269[Patents] . . . . . Separable actuator bushing
270[Patents] . . . Removable guide
271[Patents] . . . . Resiliently mounted actuator
272[Patents] . . . Biased
273[Patents] . . Internal thread
274[Patents] . . Encased
275[Patents] . . . Biased
276[Patents] . . . . Spring
277[Patents] . . Biased
278[Patents] . . . Spring
279[Patents] . Linkage
280[Patents] . . Toggle
281[Patents]BALANCED VALVES
282[Patents] . Reciprocating
283[Patents] . Rotary
284[Patents]LIMIT STOP
285[Patents] . Adjustable
286[Patents] . Rotary valve
287[Patents] . . Stop element on head
288[Patents] . . Stop element on actuator
289[Patents]VALVE ACTUABLE FROM PLURAL POSITIONS
290[Patents]PLURAL SELECTIVE NEUTRAL POSITIONS FOR VALVE OR ACTUATOR
291[Patents]DETACHABLE ACTUATOR
292[Patents] . Rotary valve
293[Patents]EXTENSION FOR ACTUATOR
294[Patents]FLEXIBLE ACTUATOR (E.G., BOWDEN WIRE; CHAIN)
295[Patents]PEDAL ACTUATOR
296[Patents]PLURAL MOTIONS OF ACTUATOR
297[Patents]WITH FRICTION DETENT
298[Patents]PIVOTED VALVES
299[Patents] . Terminal
300[Patents] . . Gate
301[Patents] . Gate
302[Patents] . . Bifaced
303[Patents] . Biased
304[Patents]ROTARY VALVES
305[Patents] . Butterfly
306[Patents] . . Head and/or seat packing
307[Patents] . . . Adjustable
308[Patents] . . Head and stem connections
309[Patents] . Plug
310[Patents] . . Axial and radial bore
311[Patents] . . . Lateral inlet and outlet
312[Patents] . . Retainer at actuator end
313[Patents] . Biased
315.01[Patents] . Ball valve
315.02[Patents] . . Having a particular hardness (i.e., durometric property)
315.03[Patents] . . Of specific material
315.04[Patents] . . . Ceramic (e.g., glass or fired clay)
315.05[Patents] . . . Nonmetallic
315.06[Patents] . . Having a swinging actuator
315.07[Patents] . . Eccentric seating
315.08[Patents] . . Including trunnion opposite axially extending actuating means
315.09[Patents] . . . With removable trunnion cover
315.1[Patents] . . Housing construction
315.11[Patents] . . . Head removable perpendicular to flow passage
315.12[Patents] . . . . At the actuator side (i.e., top entry)
315.13[Patents] . . . Assembled around the head
315.14[Patents] . . . Head removable along one side of flow passage
315.15[Patents] . . . Having inseparable head
315.16[Patents] . . Ball construction
314[Patents] . Seat or interface seal
316[Patents] . . Replaceable
317[Patents] . . . Deformable material
317.01[Patents] . . . Carried by head
318[Patents]RECIPROCATING VALVE
319[Patents] . Push or pull operator
320[Patents] . . Biased
321[Patents] . . . Spring
322[Patents] . . . . Spring stop on valve stem
323[Patents] . . . . Spring abuts valve stem guide
324[Patents] . Piston
325[Patents] . . With internal flow passage
326[Patents] . Gate
327[Patents] . . Bifaced
328[Patents] . . Seats
329[Patents] . . Bodies
330[Patents] . Actuator controlled stem seal
331[Patents] . Diaphragm
332[Patents] . Diverse material seal at valve interface
333[Patents] . Particular head and seat cooperation
334[Patents] . . Elastic deformation
335.1[Patents]HERMETIC FLEXIBLE WALL SEAL FOR ACTUATOR
335.2[Patents] . Diaphragm
335.3[Patents] . Bellows
336[Patents]BIASED VALVE
337[Patents] . Springs and spring retainers
338[Patents] . Weight biased
339[Patents]VALVE ACTUATOR EXTENDING THROUGH FLUID INLET OR OUTLET
340[Patents]VALVE ACTUATOR SURROUNDING PIPE, INLET OR OUTLET
341[Patents]VALVE ACTUATOR IS VALVE CASING OR EXTENSION THEREOF
342[Patents] . Jointed or flexible wall
343[Patents] . Sleeve valve
344[Patents] . . Flow passage in sleeve
345[Patents] . . Rotary
346[Patents] . Plural motions of valve
347[Patents] . Reciprocating valve
348[Patents] . Biased valve
349[Patents]VALVE ACTUATOR IS INLET OR OUTLET
350[Patents] . Detachable tip
351[Patents] . Plural motions of valve
352[Patents] . Rotary
353[Patents] . Reciprocating spout
354[Patents] . Biased valve
355[Patents]WITH ACTUATION LUBRICATING MEANS
356[Patents]VALVE
357[Patents] . Removable seat engaging element
358[Patents] . Reinforced flexible material
359[Patents] . Seats
360[Patents] . . Removable
361[Patents] . . . Mounted between casing sections
362[Patents] . . . Compression or tension retained
363[Patents] . . . With seal
364[Patents] . . Head engaging gasket
365[Patents] . . Retained by seat deformation
366[Patents] . Bodies
367[Patents] . . Sectional
368[Patents] . Materials
369[Patents]MISCELLANEOUS
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CROSS-REFERENCE ART COLLECTIONS
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900[Patents]VALVES WITH O-RINGS
901[Patents]CURTAIN TYPE VALVES
902[Patents]SPRINGS EMPLOYED AS VALVES
903[Patents]NEEDLE VALVES
904[Patents]SNAP FIT PLUG VALVES
905[Patents]MOVABLE COIL ELECTRICAL ACTUATOR (E.G., VOICE COIL)


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Last Modified: 6 October 2000