Resources Contact Us Home
Browse by Category: Main > Industrial
Class Information
Number: 418/206
Name: Rotary expansible chamber devices >

Sub-classes under this class:

Class Number Class Name Patents
418/1 Methods 223
418/102 Shaft or trunnion lubrication or sealing by diverted working fluid portion 146
418/103 Working member peripheral surface comprises relatively circumferentially movable segments 0
418/104 With mechanical sealing 197
418/14 With delayed load 39
418/15 With plural working fluid inlet or outlet passages 315
418/150 Working chamber surface expressed mathematically 240
418/151 Weight balanced working member or partition 174
418/152 Non-metallic working member, cylinder or partition 202
418/156 Resilient working member, cylinder or partition 48
418/157 Shock or pressure relieving yieldable peripheral working member or cylinder surface portion 9
418/158 Magnetically biased vane or abutment 14
418/159 Adjustable working chamber peripheral wall controls working fluid flow 44
418/16 With changeable working chamber magnitude 28
418/160 Moving cylinder 9
418/178 With wear surface treatment or integrally plated wear layer 338
418/179 Specific material 289
418/180 Apertured bypass to pressurize or relieve working chamber zone of intermediate pressure 82
418/181 Combined 149
418/182 Relatively movable working member and drive shaft axes 90
418/183 With supply or exhaust passage in working member 55
418/189 Trapped fluid relief 79
418/191 Interengaging rotating members 88
418/2 With signal, indicator or transparent inspection means 63
418/207 Relatively moving work transmitting barriers move in separate intersecting chambers 14
418/208 Movable intermediate partition engages peripheries of plural spaced working members 2
418/209 Plural working chambers 17
418/220 Helical working member 61
418/221 Moving abutment and vane 15
418/222 Separable abutment 6
418/223 With secondary vane or abutment moving means 6
418/224 Valved vane or abutment 6
418/225 Vane or abutment comprises rotatable element 77
418/228 Axially moving vane or abutment 9
418/234 Tapered vane or abutment (e.g., wedge shaped) 12
418/235 Wear elements or antifriction means in vane or abutment slot 24
418/236 Non-radially positioned sliding vane or abutment 20
418/239 Alternately usable vane or abutment structure for reverse working member rotation 2
418/240 Interconnected abutments 6
418/241 Abutment or vane has concurrent rocking and radially sliding movement 34
418/242 Spaced oscillating abutment portions engage working member 1
418/243 Positively actuated abutment 19
418/252 With provision for quick vane replacement 5
418/253 Interconnected vanes 26
418/259 Positively actuated vane 188
418/270 Miscellaneous 363
418/3 Diverse rotary expansible chamber devices 40
418/32 Self-acting unidirectional flow with reverse rotation or reverse flow with unidirectional rotation 47
418/33 Intermittently accelerated and receding members rotate in same path (alternating piston type) 17
418/39 Convertible or changeable by assembly or disassembly 40
418/4 Working member or cylinder surface has alternate linear and curvilinear movement (e.g., endless) 5
418/40 Speed controlled 7
418/45 Collapsible progressively deformed working chamber wall 32
418/46 With removal or accommodation of solid foreign material in working fluid 26
418/48 Unlike helical surfaces on relatively wobbling rotating member and encompassing cylinder (e.g., moineau type) 267
418/49 Nutating working member 11
418/5 Multistage 61
418/54 Working member has planetary or planetating movement 49
418/68 Rotating internal member rotates and oscillates or reciprocates 64
418/69 With frangible drive connection or clutch 65
418/70 With rapid disassembly feature (i.e., without tools) 15
418/71 Pressure fluid radially balances working or rotating abutment member 16
418/75 Grooved abutting cylinder-rotating member end surfaces 49
418/83 Heat exchange or non-working fluid lubricating or sealing 191
418/DIG.1 Non-working fluid separation 220

Patents under this class:

Patent Number Title Of Patent Date Issued

  Recently Added Patents
Geographically self-labeling access points
Press nut
Liquid dispensing apparatus
Devices including composite thermal capacitors
Architectural panel with Tarwe and grass
Glow in the dark swim goggle frame and band
Sacrificial spacer approach for differential source/drain implantation spacers in transistors comprising a high-k metal gate electrode structure
  Randomly Featured Patents
Dynamic security events and event channels in a network security system
Tool cable feeding system
Amino-alcohol derivatives
Method of maintaining inkjet printhead using non-contact roller
Intercalated clay having large interlayer spacing
Organic nitrates, processes for their preparation and their use in the treatment of cardiovascular diseases
Impregnation of chips with an acid liquid prior to a sulphate pulping process
Apparatus and method for breast cancer imaging
Single crystal, dual wafer, tunneling sensor and a method of making same
A.C. hydroelectrostatic precipitator