The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 1986
Filed:
May. 28, 1985
Hannu Sarvanne, Kivivuorenkuja, FI;
Oy E. Sarlin AB, Helsinki, FI;
Abstract
An impeller in a pump, in particular a sewage pump, the passage of which is required to have a given transmission capacity for transmitting the impurities present in the sewage water. When small volumetric flows are being pumped at great delivery lift, it would be advantageous, with a view to achieving good efficiency, to make the passage narrower than the inlet aperture, but up to date it has not been possible to do this without impairing the transmission capacity. In the impeller of the invention, this has been solved in that for achieving sufficient transmission capacity one wider point has been provided in the passage, located between the inlet and outlet margins of the impeller blade.