Classifying – separating – and assorting solids – Sifting – Concave and convex sifters
Reexamination Certificate
2011-07-05
2011-07-05
Rodriguez, Joseph C (Department: 3653)
Classifying, separating, and assorting solids
Sifting
Concave and convex sifters
C209S241000, C209S405000, C209S421000
Reexamination Certificate
active
07971726
ABSTRACT:
A screening apparatus for processing excavated material from a ditch into fines and roughs is disclosed. The screening apparatus includes an inclined lift conveyor for moving the excavated material upward and depositing the excavated material onto a convex vibrating screen surface. A transfer conveyor having an arcuate belt path as disposed below the separator for introducing the fines to the excavation. The separator includes a reversible motor for providing a first vibration and a second vibration to the separator.
REFERENCES:
patent: 3439806 (1969-04-01), Kass et al.
patent: 4105544 (1978-08-01), Stevick
patent: 4363725 (1982-12-01), Morita et al.
patent: 4591432 (1986-05-01), Hartl
patent: 4912862 (1990-04-01), Bishop et al.
patent: 4948299 (1990-08-01), Cronk, Jr. et al.
patent: 5183160 (1993-02-01), McClain
patent: 5259699 (1993-11-01), Klamar
patent: 5261171 (1993-11-01), Bishop
patent: 5363574 (1994-11-01), Osadchuk
patent: 5430962 (1995-07-01), Osadchuk
patent: 5479726 (1996-01-01), Bishop
patent: 5540003 (1996-07-01), Osadchuk
patent: 5694709 (1997-12-01), Cronk et al.
patent: 5938373 (1999-08-01), Scudder
patent: 6158925 (2000-12-01), Schleining et al.
patent: 6186338 (2001-02-01), Douglas
patent: RE38765 (2005-08-01), Currey
patent: 7186059 (2007-03-01), Barnes
patent: 7310896 (2007-12-01), Lopata
Harter Secrest & Emery LLP
Kumar Kalyanavenkateshware
Rodriguez Joseph C
Salai Esq. Stephen B.
Shaw Esq. Brian B.
LandOfFree
Screening apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Screening apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screening apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2671318