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Class Information
Number: 417/DIG.1
Name: Pumps > Materials digest
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7134851 |
Reciprocating pump having a ceramic piston |
Nov. 14, 2006 |
| 6874325 |
Compressor and refrigerant system device using the same |
Apr. 5, 2005 |
| 6598421 |
Compressor and refrigeration system |
Jul. 29, 2003 |
| 6511304 |
Radial plunger machine |
Jan. 28, 2003 |
| 6478551 |
Gas compressor having enlarged discharge chamber |
Nov. 12, 2002 |
| 6457947 |
Piston compressor for refrigerant, with thermal insulation |
Oct. 1, 2002 |
| 6293764 |
Reciprocating compressor with dry lubricating system |
Sep. 25, 2001 |
| 6082495 |
Scroll compressor bearing lubrication |
Jul. 4, 2000 |
| 5902096 |
Diaphragm pump having multiple rigid layers with inlet and outlet check valves |
May. 11, 1999 |
| 5876190 |
Vacuum membrane pump and a head portion for a vacuum membrane pump |
Mar. 2, 1999 |
| 5806336 |
Refrigeration apparatus and lubricating oil composition |
Sep. 15, 1998 |
| 5671656 |
Paint pump fluid section |
Sep. 30, 1997 |
| 5669764 |
Pneumatic diaphragm pump |
Sep. 23, 1997 |
| 5649813 |
Chamber insulation for prevention of icing in air motors |
Jul. 22, 1997 |
| 5622479 |
Composite device for a fluid system of a vehicle |
Apr. 22, 1997 |
| 5611681 |
Reciprocating rod type pump for shear sensitive material |
Mar. 18, 1997 |
| 5607291 |
Closed compressor |
Mar. 4, 1997 |
| 5573385 |
Dual chamber pump |
Nov. 12, 1996 |
| 5567131 |
Spring biased check valve for an electromagnetically driven oscillating pump |
Oct. 22, 1996 |
| 5547351 |
Low pressure low volume liquid pump |
Aug. 20, 1996 |
| 5531574 |
Closed-type compressor |
Jul. 2, 1996 |
| 5509789 |
Liquid ring pump having a sheet metal working chamber casing |
Apr. 23, 1996 |
| 5494420 |
Rotary and reciprocating pump with self-aligning connection |
Feb. 27, 1996 |
| 5489195 |
Liquid ring pump having a sheet metal valve plate |
Feb. 6, 1996 |
| 5480292 |
Dual chamber pump |
Jan. 2, 1996 |
| 5397220 |
Canned motor pump |
Mar. 14, 1995 |
| 5378114 |
Gaseous fuel injection pump |
Jan. 3, 1995 |
| 5338151 |
Unit for delivering fuel from the fuel tank to the internal combustion engine of a motor vehicle |
Aug. 16, 1994 |
| 5273410 |
Compressor exhibiting an iron sulfide wear surface |
Dec. 28, 1993 |
| 5240387 |
Variable capacity vane compressor having an improved bearing arrangement for a drive shaft and a capacity control element |
Aug. 31, 1993 |
| 5192200 |
Reed valve for a hermetic compressor |
Mar. 9, 1993 |
| 5141416 |
Plunger for a downhole reciprocating oil well pump and the method of manufacture thereof |
Aug. 25, 1992 |
| 5131818 |
High-pressure water pump having a polyetheretherketone cylinder bushing for pure water |
Jul. 21, 1992 |
| 5110463 |
Slurry filter apparatus with means to direct slurry to filter face at an angle |
May. 5, 1992 |
| 5108270 |
Conductive plastic fluid handling equipment |
Apr. 28, 1992 |
| 5047287 |
Diaphragm |
Sep. 10, 1991 |
| 5033940 |
Reciprocating high-pressure compressor piston with annular clearance |
Jul. 23, 1991 |
| 5022829 |
Vacuum apparatus |
Jun. 11, 1991 |
| 5021151 |
Plastic impeller pump and filtration unit for semi-conductor etching system |
Jun. 4, 1991 |
| 5013219 |
Positive displacement piston pump |
May. 7, 1991 |
| 4996085 |
Repair composition and method |
Feb. 26, 1991 |
| 4990067 |
Hermetic compressor |
Feb. 5, 1991 |
| 4870827 |
Hybrid composite compressor |
Oct. 3, 1989 |
| 4861395 |
Method of using machine parts made of austenitic cast iron having resistance to stress corrosion cracking in contact with salt water |
Aug. 29, 1989 |
| 4854825 |
Multi-stage vacuum pump |
Aug. 8, 1989 |
| 4842498 |
Diaphragm compressor |
Jun. 27, 1989 |
| 4834625 |
Ceramic sound dampening encasement for fluid pump |
May. 30, 1989 |
| 4808092 |
Precision reciprocating metering pump |
Feb. 28, 1989 |
| 4806083 |
Submersible pump with expanded foam housing |
Feb. 21, 1989 |
| 4793875 |
Abrasion resistant casting alloy for corrosive applications |
Dec. 27, 1988 |
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