Patent · US Expired

Scraper apparatus for settling basins and the like

US4417983A · kind A · utility

4Cited by

1References

6Claims

0Family size

Assignee

Passavant-Werke AG & Co. KG · DE

Inventors

Rudolf Smigerski · Katzenelnbogen, DE
Rosemarie Dorner · Nastätten, DE
Peter Schmidt · Bärnau, DE

Key dates

Filing date	Mar 20, 1981
Grant date	Nov 29, 1983
Priority date	—
Expiry date	Mar 20, 2001

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D21/18
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Scraper apparatus for settling basins embodies a translatable bridge which is mounted above the basin and carries a pivot arm and a loading device that generates a return force for loading a scraper blade carried by the pivot arm into the scraping position. The loading device generates a return force which initially increases during upward pivotal movement of the scraper blade.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.