What follows are the subclasses from one class of the Manual of Classification for US patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retrieve patent titles by entering the class/subclass in the box below.
Enter a class/subclass code here to get a list of patent titles. Use
any of the following forms:
363-131 121-55A 14-.5
that is, no embedded spaces, class and subclass seperated by a dash, and any
subclass letters capitalized. Currently Design Patent titles (those in the
classes of the form Dxx.yy) are not retreivable.
Class Number: 418
Class Title: ROTARY EXPANSIBLE CHAMBER DEVICES
Subclass Subclass
Number Title
1 METHODS
2 WITH SIGNAL, INDICATOR OR TRANSPARENT INSPECTION MEANS
3 DIVERSE ROTARY EXPANSIBLE CHAMBER DEVICES
4 WORKING MEMBER OR CYLINDER SURFACE HAS ALTERNATE LINEAR AND
CURVILINEAR MOVEMENT (E.G., ENDLESS)
5 MULTISTAGE
6 .One working chamber stage encircles another
7 .Successive stages alternately produce work
8 .Working fluid engages working member serially in
circumferentially spaced working chambers
9 .Interengaging rotary members
10 ..Three or more
11 .Sliding abutment
12 .Swinging abutment
13 .Sliding vane
14 WITH DELAYED LOAD
15 WITH PLURAL WORKING FLUID INLET OR OUTLET PASSAGES
16 WITH CHANGEABLE WORKING CHAMBER MAGNITUDE
17 .Speed controlled
18 .Intermittently accelerated and receding members rotate in same
path (alternating piston type)
19 .Intermeshing rotary members
20 ..Three or more
21 ..Movable member moved axially
22 .Axially or radially spaced working chambers
23 .By adjustably limiting vane or abutment movement
24 .Spring or fluid biased movable member
25 ..Positively biased in opposite directions
26 ...With working fluid bias
27 ..Spring
28 .By axial movement of movable member
29 .Rotating inner working or reacting member repositioned relative
to cylinder
30 .By cylinder or cylinder portion pivotal movement
31 .Cylinder or cylinder portion moved linearly and radially
32 SELF-ACTING UNIDIRECTIONAL FLOW WITH REVERSE ROTATION OR REVERSE
FLOW WITH UNIDIRECTIONAL ROTATION
33 INTERMITTENTLY ACCELERATED AND RECEDING MEMBERS ROTATE IN SAME
PATH (ALTERNATING PISTON TYPE)
34 .Moving cylinder
35 .Each a working member
36 ..Working member movement controlled by interengaging rotating
members
37 ..Working member movement controlled by member rotating about
parallel axis
38 ..Cam controlled working member movement
39 CONVERTIBLE OR CHANGEABLE BY ASSEMBLY OR DISASSEMBLY
40 SPEED CONTROLLED
41 .Rotating weight valves working fluid passage
42 .Rotating weight positioned on or within inner rotating member
43 .Weight rotates about axially extending axis
44 ..Other than working member axiss
45 COLLAPSIBLE PROGRESSIVELY DEFORMED WORKING CHAMBER WALL
46 WITH REMOVAL OR ACCOMMODATION OF SOLID FOREIGN MATERIAL IN
WORKING FLUID
47 .With filter
48 UNLIKE HELICAL SURFACES ON RELATIVELY WOBBLING ROTATING MEMBER
AND ENCOMPASSING CYLINDER (E.G., MOINEAU TYPE)
49 NUTATING WORKING MEMBER
50 .Non-metallic working member or working chamber portion
51 .With mechanical sealing
52 .Working member common to plural working chambers
53 ..Axially spaced working chambers
54 WORKING MEMBER HAS PLANETARY OR PLANETATING MOVEMENT
55.1 .Helical working member, e.g., scroll
55.2 ..Having specific wrap or end plate, e.g., shape, material,
coating
55.3 ..With specific rotation preventing or rotation coupling
means
55.4 ..With mechanical sealing
55.5 ..With biasing means, e.g., axial or radial
55.6 ..With lubricant, liquid seal or nonworking fluid
separation
56 .Non-metallic working member, cylinder or partition
57 .Adjustable or resiliently biased working member
58 .Plural working members or chambers
59 ..Radially spaced working chambers
60 ..Axially spaced working members
61.1 ..Circumferentially spaced working chambers
61.2 ...Rotor has one more lobe than cylinder (i.e., Wankel
type)
61.3 ...Rotor has one less lobe than cylinder (i.e., Gerotor
type)
62 .Partition pivotally connected to working member and cylinder
63 .With relatively movable partition member
64 ..Slidable in working member
65 ..Having working fluid passage
66 ..Integral with working member
67 ..Pivoted to working member
68 ROTATING INTERNAL MEMBER ROTATES AND OSCILLATES OR RECIPROCATES
69 WITH FRANGIBLE DRIVE CONNECTION OR CLUTCH
70 WITH RAPID DISASSEMBLY FEATURE (I.E., WITHOUT TOOLS)
71 PRESSURE FLUID RADIALLY BALANCES WORKING OR ROTATING ABUTMENT
MEMBER
72 .With counterbalancing fluid passage through rotating member
73 .Counterbalancing fluid directed to rotating member shaft
bearing
74 .Counterbalancing fluid directed to intertooth spaces or spaces
between adjacent vanes
75 GROOVED ABUTTING CYLINDER-ROTATING MEMBER END SURFACES
76 .Non-working fluid directed to groove
77 .Grooved working member surface
78 .Working fluid portion fills intertooth spaces or spaces between
adjacent vanes
79 .Radial groove
80 .Radially spaced grooves
81 .Annular groove or recess completely encircles rotation axis
82 .Groove communicates with vane slot
83 HEAT EXCHANGE OR NON-WORKING FLUID LUBRICATING OR SEALING
84 .With condition responsive control of non-working fluidd
85 .With heat exchange means for non-working fluid
86 .Heat exchange by diverted incoming or outgoing working fluid
87 .Valve regulated non-working fluid
88 .With pump for non-working fluid
89 .With filter for non-working fluid
90 .Wick or absorbent material feed
91 .Non-working fluid passage in inner working or reacting member
92 ..With non-working fluid passage in partition
93 ..Non-working fluid biases vane
94 ..With non-working fluid passage in drive shaft
95 .Vent or non-seal means prevents working and non-working fluid
intermix
96 .Outer cylinder member immersed or submerged in non-working
fluid
97 .Non-working and working fluids intermix in working chamber
98 ..Non-working fluid initially directed to shaft bearing
99 ..Non-working fluid initially directed to working member
100 .Intermixed incoming working and non-working fluids
101 .With coolant air impelling means or finned cylinder surface
102 SHAFT OR TRUNNION LUBRICATION OR SEALING BY DIVERTED WORKING
FLUID PORTION
103 WORKING MEMBER PERIPHERAL SURFACE COMPRISES RELATIVELY
CIRCUMFERENTIALLY MOVABLE SEGMENTS
104 WITH MECHANICAL SEALING
105 .Abutment position adjustment
106 .Vane position adjustment
107 .By changing working member or cylinder relative position
108 ..Radially adjustable
109 ...Adjustable working member
110 .By axially relatively moving working member sections
111 .By axially relatively moving vane or abutment sections
112 .Seal on working member periphery separates inlet and outlet
ports
113 ..Seal on working member peripheral projection engages cylinder
working chamber surface (e.g., apex seals)
114 ...Adjustable or expandable peripheral projection
115 ...Weight balanced or adjustable seal
116 ...Ring seal or arcuate seal portion
117 ...With plural circumferentially spaced peripheral seals
118 ...Swinging seal
119 ...Integral peripheral and depending side seal
120 ...With axially movable side seal
121 ....Spring biased
122 ...Spring biased
123 ....Fluid biased
124 ...Fluid biased
125 .Seal on cylinder engaging rotary member separates inlet and
outlet ports
126 ..Engages plural rotary members
127 ..Adjustable
128 ...With resilient interposed member
129 ..With resilient biasing means
130 .Cup shaped cylinder axially movable to abut cylinder side
131 .Axially movable end wall or end wall portion
132 ..Progressively biased from inlet to outlet
133 ..Surface abutting working member abuts another coplanar
cylinder surface portion
134 ..Adjustable end walll
135 ..Spring biased
136 .Seal element between working member and vane
137 ..Mounted on working member
138 ...Oscillating
139 .Seal element between abutment and cylinder or working member
140 .Seal element between working member and cylinder
141 ..Labyrinth
142 ..On working member
143 ...On working member circumferential periphery
144 ..Between adjacent cylinder and working member sides
145 .Seal element between vane and cylinder
146 ..On vane side
147 ..Movable seal on vane
148 ...Positively urged to engage cylinder
149 .Seal element between stationary cylinder parts
150 WORKING CHAMBER SURFACE EXPRESSED MATHEMATICALLY
151 WEIGHT BALANCED WORKING MEMBER OR PARTITION
152 NON-METALLIC WORKING MEMBER, CYLINDER OR PARTITION
153 .Resilient
154 ..Partition integral with working member
155 ...Extending from working member side
156 RESILIENT WORKING MEMBER, CYLINDER OR PARTITION
157 SHOCK OR PRESSURE RELIEVING YIELDABLE PERIPHERAL WORKING MEMBER
OR CYLINDER SURFACE PORTION
158 MAGNETICALLY BIASED VANE OR ABUTMENT
159 ADJUSTABLE WORKING CHAMBER PERIPHERAL WALL CONTROLS WORKING
FLUID FLOW
160 MOVING CYLINDER
161 .Rotating
162 ..With axially movable partition member
163 ...Cylinder and internal member rotate about non-parallel axes
164 ..Rotary internal reacting member
165 ...Cylinder engages plural internal reacting members
166 ...Intermeshing peripheral surfaces
167 ....With intake or exhaust passage in internal member
168 ....Cylinder periphery comprises alternate tooth and passage
portions (e.g., cage type)
169 .....With filler element (e.g., crescent)
170 ....With filler element (e.g., crescent)
171 ....Inner member has five or more teeth
172 ...With movable partition member
173 ....Partition radially slidable in internal member
174 ....Partition radially slidable in cylinder
175 ..Moving partition on stationary member
176 ..Swinging partition
177 ..Sliding partition
178 WITH WEAR SURFACE TREATMENT OR INTEGRALLY PLATED WEAR LAYER
179 SPECIFIC MATERIAL
180 APERTURED BYPASS TO PRESSURIZE OR RELIEVE WORKING CHAMBER ZONE
OF INTERMEDIATE PRESSURE
181 COMBINED
182 RELATIVELY MOVABLE WORKING MEMBER AND DRIVE SHAFT AXES
183 WITH SUPPLY OR EXHAUST PASSAGE IN WORKING MEMBER
184 .Passage includes vane slot
185 .Controlled by working member carried valve
186 .Supply and exhaust passages in working member
187 ..Passage extending through working member center of rotation
188 .Supply or exhaust passage through working member center off
rotation
189 TRAPPED FLUID RELIEF
190 .With tooth modification
191 INTERENGAGING ROTATING MEMBERS
192 .With movable partition
193 ..Axially moving
194 .Each tapered
195 .Non-parallel axis
196 .Three or more
197 ..Helical or herringbone
198 .Intermittent rotation
199 .Multiple units
200 ..With axially spaced working members
201.1 .Helical or herringbone
201.2 ..With valve
201.3 ..Having specific tooth shape
202 ..Each member having opposed axially spaced helices
203 ..Axially counterbalanced
204 .Eccentrically mounted
205 .Like rotary members
206 ..Having each radial protuberance of like dimension
207 RELATIVELY MOVING WORK TRANSMITTING BARRIERS MOVE IN SEPARATE
INTERSECTING CHAMBERS
208 MOVABLE INTERMEDIATE PARTITION ENGAGES PERIPHERIES OF PLURAL
SPACED WORKING MEMBERS
209 PLURAL WORKING CHAMBERS
210 .Axially spaced rotating members rotate on common axis
211 ..With axially moving vane or abutment
212 ..Intermediate member separates and engages plural working
members
213 ...Plural intermediate members
214 ...Interconnected abutments
215 .Axially spaced working chambers
216 ..Helical working member or working member portion
217 ..Axially moving abutment or vane
218 ...Moving about non-parallel axis
219 ...Vane
220 HELICAL WORKING MEMBER
221 MOVING ABUTMENT AND VANE
222 SEPARABLE ABUTMENT
223 WITH SECONDARY VANE OR ABUTMENT MOVING MEANS
224 VALVED VANE OR ABUTMENT
225 VANE OR ABUTMENT COMPRISES ROTATABLE ELEMENT
226 .Rotates about non-parallel axis
227 .Positively rotated
228 AXIALLY MOVING VANE OR ABUTMENT
229 .Sliding
230 ..Positively biased
231 ...In opposite directions
232 ....Spring or fluid bias
233 .Radially pivoted vane
234 TAPERED VANE OR ABUTMENT (E.G., WEDGE SHAPED)
235 WEAR ELEMENTS OR ANTIFRICTION MEANS IN VANE OR ABUTMENT SLOT
236 NON-RADIALLY POSITIONED SLIDING VANE OR ABUTMENT
237 .Arc shaped
238 .Positively biased
239 ALTERNATELY USABLE VANE OR ABUTMENT STRUCTURE FOR REVERSE
WORKING MEMBER ROTATIONN
240 INTERCONNECTED ABUTMENTS
241 ABUTMENT OR VANE HAS CONCURRENT ROCKING AND RADIALLY SLIDING
MOVEMENT
242 SPACED OSCILLATING ABUTMENT PORTIONS ENGAGE WORKING MEMBER
243 POSITIVELY ACTUATED ABUTMENT
244 .Cam actuated
245 ..In opposite directions
246 ..Spring or fluid biased in opposite direction
247 .In opposite directions
248 .Spring biased
249 .Fluid biased
250 ..Winged abutment
251 ..With working fluid passage in abutment
252 WITH PROVISION FOR QUICK VANE REPLACEMENT
253 INTERCONNECTED VANES
254 .Integrally connected
255 ..Diametrically aligned
256 .Encompassing moving member interconnects plural vanes
257 .Interposed movable member interconnects plural vanes
258 ..Spring
259 POSITIVELY ACTUATED VANE
260 .Cam actuated
261 ..In opposite directions
262 ...With pivoted interposed lever
263 ...With spring or fluid bias
264 ...With roller
265 .In opposite directions
266 .Spring biased
267 ..With fluid bias
268 .Fluid biased
269 ..Constantly interposed pressure fluid spreads plural vanes
270 MISCELLANEOUS
* ******************************
* DIGEST
* ******************************
DIG 1 NON-WORKING FLUID SEPARATION