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Class Information
Number: 418/195
Name: Rotary expansible chamber devices > Interengaging rotating members > Non-parallel axis
Description: Apparatus in which the axes of a working member and at least one other coacting rotating member are not parallel.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7621254 |
Internal combustion engine with toroidal cylinders |
Nov. 24, 2009 |
| 7553133 |
Circumferential piston compressor/pump/engine (CPC/CPP/CPE); circumferential piston machines |
Jun. 30, 2009 |
| 7390181 |
Rotating piston machine |
Jun. 24, 2008 |
| 7364415 |
Twin piston fluid compressor or pump apparatus with an annular bore housing |
Apr. 29, 2008 |
| 7351047 |
Swash-plate variable volume chamber-type fluid machine |
Apr. 1, 2008 |
| 7341041 |
Toroidal engine with variable displacement volume |
Mar. 11, 2008 |
| 7318712 |
Rotary piston machines comprising a displaceable inner housing |
Jan. 15, 2008 |
| 7305963 |
Blade-thru-slot combustion engine, compressor, pump and motor |
Dec. 11, 2007 |
| 7275920 |
Rotary piston machine |
Oct. 2, 2007 |
| 7225789 |
Sealing intersecting vane machines |
Jun. 5, 2007 |
| 7171941 |
Positive displacement rotary device and method of use |
Feb. 6, 2007 |
| 7162993 |
Intersecting vane machines |
Jan. 16, 2007 |
| 7153112 |
Compressor and a method for compressing fluid |
Dec. 26, 2006 |
| 7097437 |
Rotary fluid machine |
Aug. 29, 2006 |
| 7080976 |
Volumetric rotary machine |
Jul. 25, 2006 |
| 7059294 |
Orbital engine |
Jun. 13, 2006 |
| 6941900 |
VAL rotary engine |
Sep. 13, 2005 |
| 6901904 |
Sealing intersecting vane machines |
Jun. 7, 2005 |
| 6896501 |
Single-screw compressor |
May. 24, 2005 |
| 6887057 |
Minimal contact seal positive displacement device method and apparatus |
May. 3, 2005 |
| 6884051 |
Rotary fluid machinery |
Apr. 26, 2005 |
| 6739852 |
Rotary engine and method for determining engagement surface contours therefor |
May. 25, 2004 |
| 6729295 |
Rotary piston engine |
May. 4, 2004 |
| 6634873 |
Method for determining engagement surface contours for a rotor of an engine |
Oct. 21, 2003 |
| 6632145 |
Fluid displacement pump with backpressure stop |
Oct. 14, 2003 |
| 6547545 |
Rotary machine for a compression or an expansion of a gaseous working fluid |
Apr. 15, 2003 |
| 6497564 |
Balanced rotors positive displacement engine and pump method and apparatus |
Dec. 24, 2002 |
| 6447275 |
Screw pump |
Sep. 10, 2002 |
| 6398532 |
Single screw compressor |
Jun. 4, 2002 |
| 6332271 |
Method for making rotors |
Dec. 25, 2001 |
| 6135743 |
Rotary piston pump |
Oct. 24, 2000 |
| 6106241 |
Single screw compressor with liquid lock preventing slide |
Aug. 22, 2000 |
| 6036463 |
Rotary positive displacement engine |
Mar. 14, 2000 |
| 5993182 |
Reversible converter of direction of movement and device for displacing volumes using said converter |
Nov. 30, 1999 |
| 5890884 |
Screw-type compressor with liquid lock protection |
Apr. 6, 1999 |
| 5782624 |
Fluid compression/expansion machine with fluted main rotor having ruled surface root |
Jul. 21, 1998 |
| 5755196 |
Rotary positive displacement engine |
May. 26, 1998 |
| 5513969 |
Rotary piston machine having engaging cycloidal gears |
May. 7, 1996 |
| 5474043 |
Helicotoroidal vane rotary engine |
Dec. 12, 1995 |
| 5435704 |
Capacity and volume ratio control valve assembly |
Jul. 25, 1995 |
| 5395225 |
Screw pump having eccentric circular sealing discs |
Mar. 7, 1995 |
| 5233954 |
Toroidal hyper-expansion rotary engine, compressor, expander, pump and method |
Aug. 10, 1993 |
| 5205724 |
Revolving piston compressor |
Apr. 27, 1993 |
| 5131359 |
Rotating head and piston engine |
Jul. 21, 1992 |
| 5129800 |
Single screw interrupted thread positive displacement mechanism |
Jul. 14, 1992 |
| 5125379 |
Rotary engine |
Jun. 30, 1992 |
| 5087182 |
Casing construction for screw compression/expansion machines |
Feb. 11, 1992 |
| 5082431 |
Mechanical scavenging system for single screw compressors |
Jan. 21, 1992 |
| 5080568 |
Positive displacement rotary machine |
Jan. 14, 1992 |
| 5018952 |
Single screw mechanism with gaterotor housing at intermediate pressure |
May. 28, 1991 |
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