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Class Information
Number: 418/179
Name: Rotary expansible chamber devices > Specific material
Description: Apparatus relating to the particular metal or alloy or the properties of either of which the device is made.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7431576 |
Ductile cast iron scroll compressor |
Oct. 7, 2008 |
| 7374411 |
Oil pump adapted to prevent leakage without using sealing member |
May. 20, 2008 |
| 7354258 |
Stator for an eccentric single-rotor screw pump and method for its production |
Apr. 8, 2008 |
| 7347677 |
Vane pump |
Mar. 25, 2008 |
| 7314358 |
Scroll fluid machine having an adjustment member for correcting an error in orbiting motion between fixed and orbiting scrolls |
Jan. 1, 2008 |
| 7275918 |
Scroll apparatus with an axial gap control function |
Oct. 2, 2007 |
| 7214042 |
Progressing cavity pump with dual material stator |
May. 8, 2007 |
| 7189068 |
Sound reduced rotary vane compressor |
Mar. 13, 2007 |
| 7179068 |
Electric compressor |
Feb. 20, 2007 |
| 7086151 |
Powder metal scrolls |
Aug. 8, 2006 |
| 7083401 |
Asymmetric contouring of elastomer liner on lobes in a Moineau style power section stator |
Aug. 1, 2006 |
| 7014438 |
Fluid machinery |
Mar. 21, 2006 |
| 6948922 |
Hermetic compressor and open compressor |
Sep. 27, 2005 |
| 6918749 |
Compressor with aluminum housing and at least one aluminum rotor |
Jul. 19, 2005 |
| 6884049 |
Screw compressor and method of manufacturing rotor for the same |
Apr. 26, 2005 |
| 6872061 |
Method for making a moineau stator and resulting stator |
Mar. 29, 2005 |
| 6863511 |
Two-shaft vacuum pump |
Mar. 8, 2005 |
| 6835056 |
Roller vane pump incorporating a bearing bush |
Dec. 28, 2004 |
| 6716010 |
Bearing arrangement |
Apr. 6, 2004 |
| 6666671 |
Rotary pump |
Dec. 23, 2003 |
| 6659749 |
Hermetic compressor and open compressor |
Dec. 9, 2003 |
| 6638041 |
Water based hydraulic fluid and hydraulic pressure device |
Oct. 28, 2003 |
| 6592347 |
Rotary compressor |
Jul. 15, 2003 |
| 6589033 |
Unitary sliding vane compressor-expander and electrical generation system |
Jul. 8, 2003 |
| 6572352 |
Two-piece powdered metal suction fitting |
Jun. 3, 2003 |
| 6565341 |
Geared feed pump for supplying fuel to a high pressure fuel pump |
May. 20, 2003 |
| 6547544 |
Hermetic compressor and open compressor |
Apr. 15, 2003 |
| 6530762 |
Vacuum pump cooling system, and a method of making it |
Mar. 11, 2003 |
| 6527529 |
Geared feed pump having a platelike cover element and an indented end cap |
Mar. 4, 2003 |
| 6499977 |
Scroll compressor with integral outer housing and a fixed scroll member |
Dec. 31, 2002 |
| 6488004 |
Toroidal internal combustion engine and method for its thermo-stabilization |
Dec. 3, 2002 |
| 6467450 |
Radial combustion motor |
Oct. 22, 2002 |
| 6457960 |
Hermetic compressor and open compressor |
Oct. 1, 2002 |
| 6447274 |
Rotary compressor having a cylinder block of sintered metal |
Sep. 10, 2002 |
| 6435850 |
Rotary compressor |
Aug. 20, 2002 |
| 6435851 |
Vane pumping machine utilizing invar-class alloys for maximizing operating performance and reducing pollution emissions |
Aug. 20, 2002 |
| 6406279 |
Displacement type fluid machine |
Jun. 18, 2002 |
| 6402488 |
Oil pump |
Jun. 11, 2002 |
| 6382942 |
Internal gear oil pump made of aluminum alloys |
May. 7, 2002 |
| 6371744 |
Dry screw vacuum pump having spheroidal graphite cast iron rotors |
Apr. 16, 2002 |
| 6358028 |
Scroll compressor |
Mar. 19, 2002 |
| 6354825 |
Helical blade fluid compressor having an aluminum alloy rotating member |
Mar. 12, 2002 |
| 6336796 |
Progressive-cavity pump with composite stator and manufacturing process |
Jan. 8, 2002 |
| 6302665 |
Hermetic compressor and open compressor |
Oct. 16, 2001 |
| 6299424 |
Sliding member and refrigerating compressor using the same |
Oct. 9, 2001 |
| 6283734 |
Gear pump and a method for positioning a gear pump shaft |
Sep. 4, 2001 |
| 6261073 |
Rotary compressor having bearing member with discharge valve element |
Jul. 17, 2001 |
| 6241494 |
Non-elastomeric stator and downhole drilling motors incorporating same |
Jun. 5, 2001 |
| 6227833 |
Fluid machine having cooperating displacement elements and a housing partially covering the displacement elements |
May. 8, 2001 |
| 6213743 |
Displacement type fluid machine |
Apr. 10, 2001 |
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