Patent
   D355253
Priority
Feb 25 1993
Filed
Feb 25 1993
Issued
Feb 07 1995
Expiry
Feb 07 2009
Assg.orig
Entity
unknown
19
5
n/a
The ornamental design for an impeller for refrigerant compressors, as shown and described.

FIG. 1 is a perspective view of an impeller for refrigerant compressors according to the present invention, FIG. 1 is enlarged 1.125 relative to FIG. 2;

FIG. 2 is a front view of an impeller for refrigerant compressors according to the present invention, the left side, right side and rear views are the substantially the same as the front view;

FIG. 3 is a top view of an impeller for refrigerant compressors according to the present invention;

FIG. 4 is a bottom view of an impeller for refrigerant compressors according to the present invention;

FIG. 5 is a perspective view of an impeller for refrigerant compressors showing a second embodiment of our new design, the bottom view is substantially the same as FIG. 4, FIG. 5 is enlarged 1.125 relative to FIG. 6;

FIG. 6 is a front view of FIG. 5, the left side, right side and rear views are substantially the same as the front view;

FIG. 7 is a top view of FIG. 5;

FIG. 8 is a perspective view of one of the blades shown in FIGS. 1 through 4, shown separately for clarity of illustration, the blades of the second embodiment of the impeller for refrigerant compressors shown in FIGS. 5 through 7 being substantially the same;

FIG. 9 is a front end view of the blade shown in FIG. 8;

FIG. 10 is a left side view of the blade shown in FIG. 8;

FIG. 11 is a right side view of the blade shown in FIG. 8;

FIG. 12 is a rear end view of the blade shown in FIG. 8;

FIG. 13 is a top view of the blade shown in FIG. 8;

FIG. 14 is a bottom view of the blade shown in FIG. 8;

FIG. 15 is a perspective view of another one of the blades shown in FIGS. 1 through 4, shown separately for clarity of illustration, the blades of the second embodiment of the impeller for refrigerant compressors shown in FIGS. 5 through 7 being substantially the same;

FIG. 16 is a front end view of the blade shown in FIG. 15;

FIG. 17 is a left side view of the blade shown in FIG. 15;

FIG. 18 is a right side view of the blade shown in FIG. 15;

FIG. 19 is a rear end view of the blade shown in FIG. 15;

FIG. 20 is a top view of the blade shown in FIG. 15; and,

FIG. 21 is a bottom view of the blade shown in FIG. 15.

The blades of FIGS. 8 through 21 are shown twice the size of the blades in FIGS. 2 through 4.

The difference between the first and second embodiments resides in the appearance of the slots in the top surface.

Jansen, Willem, Pancygrau, Steve H., Myrick, Bradford R., Griffith, John M.

Patent Priority Assignee Title
5860788, Jun 14 1996 WIND JET TECHNOLOGIES, INC Low drag fan assembly
7628586, Dec 28 2005 Elliott Company Impeller
D378754, Feb 13 1995 Gas Technology Institute Nozzle ring
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D640621, Oct 04 2007 Schwabische Huttenwerke Automotive GmbH Inner portion of a brake rotor
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D640960, Oct 04 2007 Schwabische Huttenwerke Automotive GmbH Inner portion of a brake rotor
D645950, Oct 27 2006 ResMed Motor Technologies Inc Impeller
D647442, Oct 04 2007 Schwabische Huttenwerke Automotive GmbH Inner portion of a brake rotor
D699835, Oct 27 2006 ResMed Motor Technologies Inc Impeller
D713861, Sep 27 2013 Rio Tinto Alcan International Limited Impeller for a rotary injector
D742427, Sep 27 2013 Rio Tinto Alcan International Limited Impeller for a rotary injector
D761881, Dec 23 2011 SMALLAIRE PTY LTD Blower impeller
D791841, Nov 07 2014 Ebara Corporation Impeller for pumps
D821564, Apr 25 2016 EBM-PAPST Mulfingen GmbH & Co. KG Fan blade
D824960, Sep 09 2016 BATTLEMAX PTY LTD Impeller
D843558, Oct 09 2016 FUMEX AB Collar
Patent Priority Assignee Title
1873974,
4236871, Jan 03 1978 Johnston Brothers (Engineering) Limited Centrifugal fan impellers with blades secured between plates
4428717, Oct 29 1979 Rockwell International Corporation Composite centrifugal impeller for slurry pumps
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IT635926,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Feb 25 1993Northern Research & Engineering Corporation(assignment on the face of the patent)
Mar 22 1993JANSEN, WILLEMNorthern Research & Engineering CorporationASSIGNMENT OF ASSIGNORS INTEREST 0064670898 pdf
Mar 22 1993PANCYGRAU, STEVE H Northern Research & Engineering CorporationASSIGNMENT OF ASSIGNORS INTEREST 0064670898 pdf
Mar 22 1993MYRICK, BRADFORD R Northern Research & Engineering CorporationASSIGNMENT OF ASSIGNORS INTEREST 0064670898 pdf
Mar 22 1993GRIFFITH, JOHN M Northern Research & Engineering CorporationASSIGNMENT OF ASSIGNORS INTEREST 0064670898 pdf
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