Patent · US Expired

Pinned shaft and carbon black pelleter

US4166722A · kind A · utility

6Cited by

5References

10Claims

0Family size

Assignee

Phillips Petroleum Company · US

Inventors

Bernhard Geissler · Schwarzenbruck, DE
Paul D. Hann · Bartlesville, US

Key dates

Filing date	Nov 8, 1977
Grant date	Sep 4, 1979
Priority date	—
Expiry date	Nov 8, 1997

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2004/50
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A pinned shaft and correspondingly a pinned shell are described having the pins attached to the cylindrical surfaces in such a manner that all of the pins are arranged in a geometrically symmetrical pattern of squares or equilateral triangles or equilateral hexagons with the further provision that the pins are not arranged along straight lines or on circles. By this arrangement of pins a very uniform action of the pins is achieved, the pin density being constant over the entire pinned shaft and the distance between adjacent pins being identical all over the pinned shell. A carbon black pelleting device incorporating such a pinned shaft.

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