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Class Information
Number: 29/888.02
Name: Metal working > Method of mechanical manufacture > Prime mover or fluid pump making > Fluid pump or compressor making
Description: Process wherein the manufactured article is especially adapted (1) for increasing the pressure of a gas, liquid or vapor; (2) for accelerating, conveying or transporting fluid which article generally draws the fluid into itself through an entrance port and forces the fluid out through an exhaust port; or (3) a part especially adapted for (1) or (2) which is not elsewhere classified.


Sub-classes under this class:

Class Number Class Name Patents
29/888.024 Centrifugal type 31
29/888.021 Repairing, converting, servicing or salvaging 52
29/888.023 Screw or gear type, e.g., moineau type 68
29/888.022 Scroll or peristaltic type 131
29/888.025 Vane type or other rotary, e.g., fan 87


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
7448858 Pump aggregate Nov. 11, 2008
7389582 Compressor mounting bracket and method of making Jun. 24, 2008
7337538 Methods and apparatuses for joining a pumping cartridge to a pump drive Mar. 4, 2008
7322805 Impeller adjustment device and method for doing the same for close coupled pumps Jan. 29, 2008
7290995 Tandem type trochoid pump and method of assembling the same Nov. 6, 2007
7216407 Apparatus and method for processing screw rotor and cutting bit May. 15, 2007
7185431 Method of manufacturing a linear compressor Mar. 6, 2007
7107677 Process, apparatus, and kit for assembling and disassembling a cryogenic pump Sep. 19, 2006
7094024 Performance and durability improvement in compressor structure design Aug. 22, 2006
7093352 Apparatus for assembling swash plate with pistons in a swash plate compressor Aug. 22, 2006
7093341 Method of making an axial piston pump barrel with a cast high pressure collection cavity Aug. 22, 2006
7040862 Axial flow fan May. 9, 2006
6996905 Method of making gear pump Feb. 14, 2006
6981321 Hydrostatic cylinder block and method of making the same Jan. 3, 2006
6971842 Low pressure steam turbine exhaust hood Dec. 6, 2005
6912783 Method of manufacturing a valve plate for compressor Jul. 5, 2005
6872061 Method for making a moineau stator and resulting stator Mar. 29, 2005
6817178 Master cylinder body and die for molding master cylinder body Nov. 16, 2004
6802244 Hydrostatic cylinder block and method of making the same Oct. 12, 2004
6748654 Method of manufacturing shoe for compressor Jun. 15, 2004
6708406 Method of manufacturing shoe for compressor Mar. 23, 2004
6705203 Extended male slipper servo pad arrangement for positioning swashplate and method assembling same Mar. 16, 2004
6687992 Assembly method for hermetic scroll compressor Feb. 10, 2004
6684755 Crankshaft, compressor using crankshaft, and method for assembling a compressor including installing crankshaft Feb. 3, 2004
6675475 Method of producing shoe for swash plate type compressor Jan. 13, 2004
6643927 Pump equipment with plural rotary pumps and method for assembling same Nov. 11, 2003
6634102 Method of removing a sensing rod from a hydraulic water pump Oct. 21, 2003
6612222 Hydrostatic continuously variable transmission Sep. 2, 2003
6592191 Pump equipment and method for assembling same Jul. 15, 2003
6578251 Method of fabrication of an induction motor driven seal-less pump Jun. 17, 2003
6572342 Variable capacity compressor and method of manufacturing Jun. 3, 2003
6568076 Method of making an internally profiled stator tube May. 27, 2003
6560868 Method of making lower end cap for scroll compressor May. 13, 2003
6557455 Two piece barrel design for a hydraulic oil pump May. 6, 2003
6543672 Method of forming vacuum chamber of control valve for variable capacity compressor Apr. 8, 2003
6543333 Enriched cobalt-tin swashplate coating alloy Apr. 8, 2003
6530762 Vacuum pump cooling system, and a method of making it Mar. 11, 2003
6453546 Apparatus and method for assembling multi-piston compressors Sep. 24, 2002
6438834 Method of making a swash plate type compressor piston whose head portion is formed by pore-free die-casting Aug. 27, 2002
6412171 Swash plate type compressor piston wherein inner bottom surface of hollow head section has 3-dimensional configuration nonaxisymmetric with respect to its centerline Jul. 2, 2002
6397462 Method of manufacturing a cylinder piston rod guide Jun. 4, 2002
6353987 Methods relating to constructing reciprocator assembly Mar. 12, 2002
6339876 Method for assembling an inner core/cylinder block assembly for linear compressor Jan. 22, 2002
6332271 Method for making rotors Dec. 25, 2001
6314642 Method of making an internal gear pump Nov. 13, 2001
6305912 Refrigerant compressor and method for assembling Oct. 23, 2001
6223554 Compressor provided with refrigerant and lubricant in specified relationship May. 1, 2001
6220234 Coated compressor diffuser Apr. 24, 2001
6202301 Method for manufacturing piston of variable-capacity type compressor Mar. 20, 2001
6199275 Method for forming crank shaft and method for producing crank shaft Mar. 13, 2001

1 2 3 4


 
 
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