B - Operations – Transporting – 26 – D
Patent
B - Operations, Transporting
26
D
146/52
B26D 1/26 (2006.01) B02C 18/30 (2006.01) B02C 18/36 (2006.01)
Patent
CA 1196255
Abstract of the Disclosure A meat grinder includes a bone chip remover in which the bone chips are removed at a radially outer region of the grinding plate through a single tangential opening substantially in the plane of rotation of the knife in response to intermittent operation of a valve. Knife blades which have substantial axial depth perpendicular to the plate are curved rearwardly to the direction of rotation, to apply an outward force component or pumping to chips which do not pass through the grinding plate, have terminal ends which sweep about a region radially outwardly of the perforated region of the plate, at a non-grinding or non-perforated region, behind which the chips are trapped and rotated about with the rotation of the knife blades for intermittent purging. The knife is formed with relieved areas at the radially inner ends of the blades to provide a region of communication, adjacent the grinding plate, between successive blades to prevent the formation of a central stagnation region and provide that bone chips missed by one blade may be acted upon by another to move chips outwardly. The grinding plate is supported in the cylinder and locked in place by an inwardly extending locking pin carried on a sleeve received within the cylinder engaging the front outer edge surface of the grinding plate. The axial inward extension of the pin is less than the thickness of the plate, leaving the entire inside surface of the plate free of obstruction. This allows the blade tips to reach into close proximity to the inner surface of the cylinder and provide a more positive action in forcing bone chips into the opening. It also essentially seals off the area between adjacent blades to enable a pressure drop in that area when it is purged; with a consequent movement of collected bone chips from the relieved central region into the purged area for subsequent pickup and outward displacement by a blade.
413909
Goodin Charles R.
Miller William D.
Roeger Carl R.
Gowling Lafleur Henderson Llp
Premark Feg L.l.c.
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