U.S. patent number D355,253 [Application Number D/005,166] was granted by the patent office on 1995-02-07 for impeller for refrigerant compressors.
This patent grant is currently assigned to Northern Research & Engineering Corporation. Invention is credited to John M. Griffith, Willem Jansen, Bradford R. Myrick, Steve H. Pancygrau.
United States Patent |
D355,253 |
Jansen , et al. |
February 7, 1995 |
Impeller for refrigerant compressors
Claims
The ornamental design for an impeller for refrigerant compressors,
as shown and described.
Inventors: |
Jansen; Willem (Weston, MA),
Pancygrau; Steve H. (Malden, MA), Myrick; Bradford R.
(Contoocook, NH), Griffith; John M. (Lexington, MA) |
Assignee: |
Northern Research & Engineering
Corporation (MA)
|
Appl.
No.: |
D/005,166 |
Filed: |
February 25, 1993 |
Current U.S.
Class: |
D23/411;
D15/5 |
Field of
Search: |
;D23/377,381,382,411
;D15/5 ;362/96,294 ;416/186R |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Lichtenstein; Lisa P.
Attorney, Agent or Firm: Minns; Michael H.
Description
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.
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