Metal working – Method of mechanical manufacture – Disassembling
Reexamination Certificate
2011-03-22
2011-03-22
Omgba, Essama (Department: 3726)
Metal working
Method of mechanical manufacture
Disassembling
C029S252000, C029S255000, C029S261000, C029S266000, C029S402030, C029S426100
Reexamination Certificate
active
07908728
ABSTRACT:
An improved system and method for removing extrusion screw elements includes a puller assembly for removing at least one screw element from a screw shaft of a screw-type extrusion machine. The at least one screw element includes a sleeve portion received annularly about the screw shaft and at least one flute extending radially outward from the sleeve portion. The puller assembly includes a body having a sleeve portion with an inner diameter sufficiently sized for axially fitting over the at least one screw element on the screw shaft. At least one engaging element is removably secured to the body for enabling the body to be axially installed on the at least one screw element when the at least one engaging element is removed from the body and axially locking the body on the at least one screw element when the at least one engaging element is installed in the body. The at least one engaging element extends radially inward relative to the inner diameter of the sleeve portion beyond an outer radial edge of the at least one flute when the at least one engaging element is installed in the body to axially lock the body to the at least one screw element. To remove the at least one screw element from the screw shaft, an axial pulling force is applied to the body to axially move the at least one screw element relative to the screw shaft.
REFERENCES:
patent: 2661063 (1953-12-01), Owens
patent: 3061914 (1962-11-01), Johnston
patent: RE28251 (1974-11-01), Cook
patent: 4000554 (1977-01-01), Nelson
patent: 4754539 (1988-07-01), Knoll et al.
patent: 4839955 (1989-06-01), Vannier
patent: 4951387 (1990-08-01), Vannier
patent: 5337470 (1994-08-01), Hoffman et al.
patent: 6223427 (2001-05-01), Hodgson et al.
patent: 6463643 (2002-10-01), Behling
patent: 6497435 (2002-12-01), Luft et al.
patent: RE38315 (2003-11-01), Hodgson et al.
patent: 2006/0214081 (2006-09-01), Fang
patent: WO 2005/011957 (2005-02-01), None
BUSS Kneader for the Food Industry brochure.
Fay Sharpe LLP
Omgba Essama
LandOfFree
System and method for removing extrusion screw elements does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for removing extrusion screw elements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for removing extrusion screw elements will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2729521