| |
 |
|
Class Information
Number: 418/190
Name: Rotary expansible chamber devices > Trapped fluid relief > With tooth modification
Description: Apparatus wherein at least one of the rotating members has peripheral lobed portions altered to allow for the escape of fluid when in meshing relationship with the other rotating member.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7407374 |
Hydraulic machine |
Aug. 5, 2008 |
| 7052258 |
Trochoidal pump |
May. 30, 2006 |
| 7044724 |
Screw compressor and method of manufacturing rotors thereof |
May. 16, 2006 |
| 6126424 |
Transistion valving for gerotor motors |
Oct. 3, 2000 |
| 6048186 |
Driving apparatus comprising modified gear shape elliptic gear wheels |
Apr. 11, 2000 |
| 5559288 |
Volume sensor for liquids using toothed meter wheels |
Sep. 24, 1996 |
| 5368455 |
Gear-type machine with flattened cycloidal tooth shapes |
Nov. 29, 1994 |
| 5350286 |
Liquid injection type screw compressor with lubricant relief chamber |
Sep. 27, 1994 |
| 5180299 |
Roots type supercharger |
Jan. 19, 1993 |
| 5135373 |
Spur gear with epi-cycloidal and hypo-cycloidal tooth shapes |
Aug. 4, 1992 |
| 5114325 |
Rotary internal gear pump having teeth with asymmetrical trailing edges |
May. 19, 1992 |
| 5039289 |
Rotary piston blower having piston lobe portions shaped to avoid compression pockets |
Aug. 13, 1991 |
| 4934913 |
Internal-gear machine with fluid opening in non-bearing tooth flank |
Jun. 19, 1990 |
| 4233005 |
Hydraulic gear pump with recesses in non-working gear flanks |
Nov. 11, 1980 |
| 4165209 |
External axle rotary piston machine |
Aug. 21, 1979 |
| 4155686 |
Hydrostatic intermeshing gear machine with substantially trochoidal tooth profile and one contact zone |
May. 22, 1979 |
| 3981646 |
Gear pumps and motors |
Sep. 21, 1976 |
| 3953160 |
Gear pumps and motors |
Apr. 27, 1976 |
|
|
|
