Impeller for centrifugal pumps or similar article
Description
FIG. 1 is a perspective view of an impeller for centrifugal pumps or similar article showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof; and
FIG. 7 is a bottom plan view thereof.
Referenced Cited
U.S. Patent Documents
D27078 | May 1897 | Cahill et al. |
D28217 | January 1898 | Enyant |
1131294 | March 1915 | Traylor |
2165808 | July 1939 | Murphy |
2465671 | March 1949 | Van Millingen et al. |
2869774 | January 1959 | Smith et al. |
3021049 | February 1962 | Settle |
3149823 | September 1964 | Entrikin |
3953150 | April 27, 1976 | Onal |
4093401 | June 6, 1978 | Gravelle |
4167369 | September 11, 1979 | Ishihara |
Patent History
Patent number: D258589
Type: Grant
Filed: Mar 22, 1978
Date of Patent: Mar 17, 1981
Inventor: Eiichi Sugiura (Hekinan-shi, Aichi-ken)
Primary Examiner: James R. Largen
Attorney: Robert E. Burns
Application Number: 5/889,120
Type: Grant
Filed: Mar 22, 1978
Date of Patent: Mar 17, 1981
Inventor: Eiichi Sugiura (Hekinan-shi, Aichi-ken)
Primary Examiner: James R. Largen
Attorney: Robert E. Burns
Application Number: 5/889,120
Classifications