| Class Number |
Class Name |
No. of Patents |
| 418/241 |
Abutment or vane has concurrent rocking and radially sliding movement |
34 |
| 418/159 |
Adjustable working chamber peripheral wall controls working fluid flow |
44 |
| 418/239 |
Alternately usable vane or abutment structure for reverse working member rotation |
2 |
| 418/180 |
Apertured bypass to pressurize or relieve working chamber zone of intermediate pressure |
82 |
| 418/228 |
Axially moving vane or abutment |
9 |
| 418/233 |
Radially pivoted vane |
5 |
| 418/229 |
Sliding |
7 |
| 418/230 |
Positively biased |
7 |
| 418/231 |
In opposite directions |
15 |
| 418/232 |
Spring or fluid bias |
17 |
| 418/45 |
Collapsible progressively deformed working chamber wall |
32 |
| 418/181 |
Combined |
149 |
| 418/39 |
Convertible or changeable by assembly or disassembly |
40 |
| 418/3 |
Diverse rotary expansible chamber devices |
40 |
| 418/75 |
Grooved abutting cylinder-rotating member end surfaces |
49 |
| 418/81 |
Annular groove or recess completely encircles rotation axis |
42 |
| 418/82 |
Groove communicates with vane slot |
80 |
| 418/77 |
Grooved working member surface |
70 |
| 418/76 |
Non-working fluid directed to groove |
56 |
| 418/79 |
Radial groove |
37 |
| 418/80 |
Radially spaced grooves |
10 |
| 418/78 |
Working fluid portion fills intertooth spaces or spaces between adjacent vanes |
31 |
| 418/83 |
Heat exchange or non-working fluid lubricating or sealing |
191 |
| 418/86 |
Heat exchange by diverted incoming or outgoing working fluid |
37 |
| 418/100 |
Intermixed incoming working and non-working fluids |
124 |
| 418/97 |
Non-working and working fluids intermix in working chamber |
200 |
| 418/98 |
Non-working fluid initially directed to shaft bearing |
91 |
| 418/99 |
Non-working fluid initially directed to working member |
108 |
| 418/91 |
Non-working fluid passage in inner working or reacting member |
91 |
| 418/93 |
Non-working fluid biases vane |
42 |
| 418/94 |
With non-working fluid passage in drive shaft |
373 |
| 418/92 |
With non-working fluid passage in partition |
32 |
| 418/96 |
Outer cylinder member immersed or submerged in non-working fluid |
55 |
| 418/87 |
Valve regulated non-working fluid |
91 |
| 418/95 |
Vent or non-seal means prevents working and non-working fluid intermix |
17 |
| 418/90 |
Wick or absorbent material feed |
7 |
| 418/84 |
With condition responsive control of non-working fluid |
83 |
| 418/101 |
With coolant air impelling means or finned cylinder surface |
82 |
| 418/89 |
With filter for non-working fluid |
54 |
| 418/85 |
With heat exchange means for non-working fluid |
82 |
| 418/88 |
With pump for non-working fluid |
237 |
| 418/220 |
Helical working member |
61 |
| 418/240 |
Interconnected abutments |
6 |
| 418/253 |
Interconnected vanes |
26 |
| 418/256 |
Encompassing moving member interconnects plural vanes |
22 |
| 418/254 |
Integrally connected |
11 |
| 418/255 |
Diametrically aligned |
88 |
| 418/257 |
Interposed movable member interconnects plural vanes |
34 |
| 418/258 |
Spring |
23 |
| 418/191 |
Interengaging rotating members |
88 |
| 418/194 |
Each tapered |
27 |
| 418/204 |
Eccentrically mounted |
12 |
| 418/201.1 |
Helical or herringbone |
364 |
| 418/203 |
Axially counterbalanced |
46 |
| 418/202 |
Each member having opposed axially spaced helices |
24 |
| 418/201.3 |
Having specific tooth shape |
140 |
| 418/201.2 |
With valve |
180 |
| 418/198 |
Intermittent rotation |
6 |
| 418/205 |
Like rotary members |
24 |
| 418/206.1 |
Having each radial protuberance of like dimension |
196 |
| 418/206.4 |
Having specific inlet or outlet port shape |
76 |
| 418/206.5 |
Having specific rotor or tooth shape |
109 |
| 418/206.9 |
Using specific material |
36 |
| 418/206.7 |
With bearings |
65 |
| 418/206.3 |
With heating or cooling |
23 |
| 418/206.8 |
With lubrication |
41 |
| 418/206.6 |
With sealing means |
91 |
| 418/206.2 |
With timing gear adjustment or arrangement |
23 |
| 418/199 |
Multiple units |
11 |
| 418/200 |
With axially spaced working members |
47 |
| 418/195 |
Non-parallel axis |
129 |
| 418/196 |
Three or more |
101 |
| 418/197 |
Helical or herringbone |
47 |
| 418/192 |
With movable partition |
4 |
| 418/193 |
Axially moving |
6 |
| 418/33 |
Intermittently accelerated and receding members rotate in same path (alternating piston type) |
17 |
| 418/35 |
Each a working member |
61 |
| 418/38 |
Cam controlled working member movement |
35 |
| 418/36 |
Working member movement controlled by interengaging rotating members |
109 |
| 418/37 |
Working member movement controlled by member rotating about parallel axis |
38 |
| 418/34 |
Moving cylinder |
41 |
| 418/158 |
Magnetically biased vane or abutment |
14 |
| 418/1 |
Methods |
223 |
| 418/270 |
Miscellaneous |
363 |
| 418/208 |
Movable intermediate partition engages peripheries of plural spaced working members |
2 |
| 418/221 |
Moving abutment and vane |
15 |
| 418/160 |
Moving cylinder |
9 |
| 418/161 |
Rotating |
23 |
| 418/175 |
Moving partition on stationary member |
16 |
| 418/164 |
Rotary internal reacting member |
28 |
| 418/165 |
Cylinder engages plural internal reacting members |
23 |
| 418/166 |
Intermeshing peripheral surfaces |
83 |
| 418/168 |
Cylinder periphery comprises alternate tooth and passage portions (e.g., cage type) |
37 |
| 418/169 |
With filler element (e.g., crescent) |
31 |
| 418/171 |
Inner member has five or more teeth |
274 |
| 418/170 |
With filler element (e.g., crescent) |
83 |
| 418/167 |
With intake or exhaust passage in internal member |
8 |
| 418/172 |
With movable partition member |
11 |
| 418/174 |
Partition radially slidable in cylinder |
10 |
| 418/173 |
Partition radially slidable in internal member |
65 |
| 418/177 |
Sliding partition |
33 |
| 418/176 |
Swinging partition |
17 |
| 418/162 |
With axially movable partition member |
4 |
| 418/163 |
Cylinder and internal member rotate about non-parallel axes |
2 |
| 418/5 |
Multistage |
61 |
| 418/9 |
Interengaging rotary members |
154 |
| 418/10 |
Three or more |
9 |
| 418/6 |
One working chamber stage encircles another |
37 |
| 418/11 |
Sliding abutment |
91 |
| 418/13 |
Sliding vane |
55 |
| 418/7 |
Successive stages alternately produce work |
13 |
| 418/12 |
Swinging abutment |
8 |
| 418/8 |
Working fluid engages working member serially in circumferentially spaced working chambers |
9 |
| 418/152 |
Non-metallic working member, cylinder or partition |
202 |
| 418/153 |
Resilient |
122 |
| 418/154 |
Partition integral with working member |
24 |
| 418/155 |
Extending from working member side |
2 |
| 418/236 |
Non-radially positioned sliding vane or abutment |
20 |
| 418/237 |
Arc shaped |
8 |
| 418/238 |
Positively biased |
20 |
| 418/DIG.1 |
Non-working fluid separation |
220 |
| 418/49 |
Nutating working member |
11 |
| 418/50 |
Non-metallic working member or working chamber portion |
11 |
| 418/51 |
With mechanical sealing |
25 |
| 418/52 |
Working member common to plural working chambers |
3 |
| 418/53 |
Axially spaced working chambers |
46 |
| 418/209 |
Plural working chambers |
17 |
| 418/210 |
Axially spaced rotating members rotate on common axis |
22 |
| 418/212 |
Intermediate member separates and engages plural working members |
37 |
| 418/214 |
Interconnected abutments |
2 |
| 418/213 |
Plural intermediate members |
12 |
| 418/211 |
With axially moving vane or abutment |
3 |
| 418/215 |
Axially spaced working chambers |
13 |
| 418/217 |
Axially moving abutment or vane |
10 |
| 418/218 |
Moving about non-parallel axis |
3 |
| 418/219 |
Vane |
42 |
| 418/216 |
Helical working member or working member portion |
13 |
| 418/243 |
Positively actuated abutment |
19 |
| 418/244 |
Cam actuated |
8 |
| 418/245 |
In opposite directions |
13 |
| 418/246 |
Spring or fluid biased in opposite direction |
8 |
| 418/249 |
Fluid biased |
40 |
| 418/250 |
Winged abutment |
2 |
| 418/251 |
With working fluid passage in abutment |
10 |
| 418/247 |
In opposite directions |
14 |
| 418/248 |
Spring biased |
74 |
| 418/259 |
Positively actuated vane |
188 |
| 418/260 |
Cam actuated |
58 |
| 418/261 |
In opposite directions |
35 |
| 418/262 |
With pivoted interposed lever |
8 |
| 418/264 |
With roller |
40 |
| 418/263 |
With spring or fluid bias |
17 |
| 418/268 |
Fluid biased |
196 |
| 418/269 |
Constantly interposed pressure fluid spreads plural vanes |
43 |
| 418/265 |
In opposite directions |
52 |
| 418/266 |
Spring biased |
67 |
| 418/267 |
With fluid bias |
41 |
| 418/71 |
Pressure fluid radially balances working or rotating abutment member |
16 |
| 418/74 |
Counterbalancing fluid directed to intertooth spaces or spaces between adjacent vanes |
8 |
| 418/73 |
Counterbalancing fluid directed to rotating member shaft bearing |
11 |
| 418/72 |
With counterbalancing fluid passage through rotating member |
11 |
| 418/182 |
Relatively movable working member and drive shaft axes |
90 |
| 418/207 |
Relatively moving work transmitting barriers move in separate intersecting chambers |
14 |
| 418/156 |
Resilient working member, cylinder or partition |
48 |
| 418/68 |
Rotating internal member rotates and oscillates or reciprocates |
64 |
| 418/32 |
Self-acting unidirectional flow with reverse rotation or reverse flow with unidirectional rotation |
47 |
| 418/222 |
Separable abutment |
6 |
| 418/102 |
Shaft or trunnion lubrication or sealing by diverted working fluid portion |
146 |
| 418/157 |
Shock or pressure relieving yieldable peripheral working member or cylinder surface portion |
9 |
| 418/242 |
Spaced oscillating abutment portions engage working member |
1 |
| 418/179 |
Specific material |
289 |
| 418/40 |
Speed controlled |
7 |
| 418/42 |
Rotating weight positioned on or within inner rotating member |
1 |
| 418/41 |
Rotating weight valves working fluid passage |
8 |
| 418/43 |
Weight rotates about axially extending axis |
15 |
| 418/44 |
Other than working member axis |
0 |
| 418/234 |
Tapered vane or abutment (e.g., wedge shaped) |
12 |
| 418/189 |
Trapped fluid relief |
79 |
| 418/190 |
With tooth modification |
31 |
| 418/48 |
Unlike helical surfaces on relatively wobbling rotating member and encompassing cylinder (e.g., moineau type) |
267 |
| 418/224 |
Valved vane or abutment |
6 |
| 418/225 |
Vane or abutment comprises rotatable element |
77 |
| 418/227 |
Positively rotated |
44 |
| 418/226 |
Rotates about non-parallel axis |
28 |
| 418/235 |
Wear elements or antifriction means in vane or abutment slot |
24 |
| 418/151 |
Weight balanced working member or partition |
174 |
| 418/16 |
With changeable working chamber magnitude |
28 |
| 418/22 |
Axially or radially spaced working chambers |
18 |
| 418/23 |
By adjustably limiting vane or abutment movement |
59 |
| 418/28 |
By axial movement of movable member |
24 |
| 418/30 |
By cylinder or cylinder portion pivotal movement |
117 |
| 418/31 |
Cylinder or cylinder portion moved linearly and radially |
70 |
| 418/19 |
Intermeshing rotary members |
20 |
| 418/21 |
Movable member moved axially |
35 |
| 418/20 |
Three or more |
9 |
| 418/18 |
Intermittently accelerated and receding members rotate in same path (alternating piston type) |
4 |
| 418/29 |
Rotating inner working or reacting member repositioned relative to cylinder |
45 |
| 418/17 |
Speed controlled |
6 |
| 418/24 |
Spring or fluid biased movable member |
34 |
| 418/25 |
Positively biased in opposite directions |
7 |
| 418/26 |
With working fluid bias |
102 |
| 418/27 |
Spring |
69 |
| 418/14 |
With delayed load |
39 |
| 418/69 |
With frangible drive connection or clutch |
65 |
| 418/104 |
With mechanical sealing |
197 |
| 418/105 |
Abutment position adjustment |
2 |
| 418/131 |
Axially movable end wall or end wall portion |
56 |
| 418/134 |
Adjustable end wall |
20 |
| 418/132 |
Progressively biased from inlet to outlet |
144 |
| 418/135 |
Spring biased |
58 |
| 418/133 |
Surface abutting working member abuts another coplanar cylinder surface portion |
167 |
| 418/111 |
By axially relatively moving vane or abutment sections |
24 |
| 418/110 |
By axially relatively moving working member sections |
8 |
| 418/107 |
By changing working member or cylinder relative position |
31 |
| 418/108 |
Radially adjustable |
17 |
| 418/109 |
Adjustable working member |
29 |
| 418/130 |
Cup shaped cylinder axially movable to abut cylinder side |
1 |
| 418/139 |
Seal element between abutment and cylinder or working member |
17 |
| 418/149 |
Seal element between stationary cylinder parts |
72 |
| 418/145 |
Seal element between vane and cylinder |
15 |
| 418/147 |
Movable seal on vane |
23 |
| 418/148 |
Positively urged to engage cylinder |
35 |
| 418/146 |
On vane side |
30 |
| 418/140 |
Seal element between working member and cylinder |
37 |
| 418/144 |
Between adjacent cylinder and working member sides |
56 |
| 418/141 |
Labyrinth |
49 |
| 418/142 |
On working member |
180 |
| 418/143 |
On working member circumferential periphery |
28 |
| 418/136 |
Seal element between working member and vane |
18 |
| 418/137 |
Mounted on working member |
41 |
| 418/138 |
Oscillating |
23 |
| 418/125 |
Seal on cylinder engaging rotary member separates inlet and outlet ports |
22 |
| 418/127 |
Adjustable |
13 |
| 418/128 |
With resilient interposed member |
7 |
| 418/126 |
Engages plural rotary members |
39 |
| 418/129 |
With resilient biasing means |
27 |
| 418/112 |
Seal on working member periphery separates inlet and outlet ports |
20 |
| 418/113 |
Seal on working member peripheral projection engages cylinder working chamber surface (e.g., apex seals) |
37 |
| 418/114 |
Adjustable or expandable peripheral projection |
4 |
| 418/124 |
Fluid biased |
20 |
| 418/119 |
Integral peripheral and depending side seal |
6 |
| 418/116 |
Ring seal or arcuate seal portion |
12 |
| 418/122 |
Spring biased |
35 |
| 418/123 |
Fluid biased |
23 |
| 418/118 |
Swinging seal |
1 |
| 418/115 |
Weight balanced or adjustable seal |
4 |
| 418/120 |
With axially movable side seal |
10 |
| 418/121 |
Spring biased |
26 |
| 418/117 |
With plural circumferentially spaced peripheral seals |
10 |
| 418/106 |
Vane position adjustment |
7 |
| 418/15 |
With plural working fluid inlet or outlet passages |
315 |
| 418/252 |
With provision for quick vane replacement |
5 |
| 418/70 |
With rapid disassembly feature (i.e., without tools) |
15 |
| 418/46 |
With removal or accommodation of solid foreign material in working fluid |
26 |
| 418/47 |
With filter |
23 |
| 418/223 |
With secondary vane or abutment moving means |
6 |
| 418/2 |
With signal, indicator or transparent inspection means |
63 |
| 418/183 |
With supply or exhaust passage in working member |
55 |
| 418/185 |
Controlled by working member carried valve |
29 |
| 418/184 |
Passage includes vane slot |
22 |
| 418/186 |
Supply and exhaust passages in working member |
67 |
| 418/187 |
Passage extending through working member center of rotation |
28 |
| 418/188 |
Supply or exhaust passage through working member center of rotation |
123 |
| 418/178 |
With wear surface treatment or integrally plated wear layer |
338 |
| 418/150 |
Working chamber surface expressed mathematically |
240 |
| 418/54 |
Working member has planetary or planetating movement |
49 |
| 418/57 |
Adjustable or resiliently biased working member |
495 |
| 418/55.1 |
Helical working member, e.g., scroll |
750 |
| 418/55.2 |
Having specific wrap or end plate, e.g., shape, material, coating |
453 |
| 418/55.5 |
With biasing means, e.g., axial or radial |
547 |
| 418/55.6 |
With lubricant, liquid seal or nonworking fluid separation |
462 |
| 418/55.4 |
With mechanical sealing |
310 |
| 418/55.3 |
With specific rotation preventing or rotation coupling means |
296 |
| 418/56 |
Non-metallic working member, cylinder or partition |
26 |
| 418/62 |
Partition pivotally connected to working member and cylinder |
9 |
| 418/58 |
Plural working members or chambers |
45 |
| 418/60 |
Axially spaced working members |
260 |
| 418/61.1 |
Circumferentially spaced working chambers |
88 |
| 418/61.3 |
Rotor has one less lobe than cylinder (i.e., gerotor type) |
327 |
| 418/61.2 |
Rotor has one more lobe than cylinder (i.e., wankel type) |
139 |
| 418/59 |
Radially spaced working chambers |
63 |
| 418/63 |
With relatively movable partition member |
212 |
| 418/65 |
Having working fluid passage |
19 |
| 418/66 |
Integral with working member |
25 |
| 418/67 |
Pivoted to working member |
12 |
| 418/64 |
Slidable in working member |
31 |
| 418/4 |
Working member or cylinder surface has alternate linear and curvilinear movement (e.g., endless) |
5 |
| 418/103 |
Working member peripheral surface comprises relatively circumferentially movable segments |
0 |
