Patent · US Expired

Crushing device in a crusher of an earthmover for crushing chunks of concrete into fine pieces

US6499681B1 · kind B1 · utility

3Cited by
6References
8Claims
0Family size

Inventor

Key dates

Filing dateNov 3, 2000
Grant dateDec 31, 2002
Priority date—
Expiry dateNov 3, 2020

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB02C2201/02
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

A crushing device in a crusher includes a bucket-shaped body frame; plural ring members provided in the body frame in such a manner as to form steps at predetermined spaced intervals while diminishing their sizes gradually from the upper position toward the lower position, thereby to form a sieve with gaps as a whole; a teeth plate provided at the bottom portion of the sieve and having recessed teeth and protrusive teeth alternately formed on the inner surface thereof; a crushing shaft provided at a central portion of the body frame; and an inclined screw belt member mounted on the crushing shaft, for crushing pieces of concrete on the teeth plate in combination with the teeth plate.

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