US 5,405,095 AGranted

Knife holder and knife assembly for use in a hand material collecting system for a grinder

AssigneeWeiler and Company, Inc.

InventorNick J. Lesar

Life of this patent

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Abstract

An arrangement for discharging hard material from the grinding head of a meat grinder. The hard material is passed through openings formed in the meat grinder orifice plate, and collected in a collection cavity defined by a cup member. A hard material discharge auger is located within the collection cavity, and is rotatable with the feed screw of the grinder. A restricting arrangement is provided for building up back pressure within the collection cavity, which minimizes the amount of usable soft material which passes into the collection cavity. In one form, the discharge auger extends through the collection cavity and into a discharge passage defined by a discharge tube. The auger has an outside diameter only slightly smaller than the diameter of the passage, so that the auger essentially defines a rotating flow path through which the hard material is discharged.

Claims7

Dependent claims

A grinder for use in grinding soft material which comprises a mixture of soft material and hard material, comprising:

a housing having an inlet and an outlet;
an orifice plate located at the housing outlet having a plurality of relatively small grinding orifices and a plurality of relatively large hard material collection passages located inwardly of the grinding orifices;
an advancing arrangement for moving the mixture of material through the housing toward the orifice plate;
and
a rotatable knife assembly located adjacent a surface of the orifice plate, and including a central hub, a plurality of knife holding arms extending outwardly from the hub, each arm defining a forward surface and a rearward surface adjacent the hub, and a knife mounted to each knife holding arm;
wherein the central hub of the knife assembly defines a plurality of collection pockets, each collection pocket being located between adjacent knife holding arms, each collection pocket being in axial alignment with the hard material collection passages in the orifice plate and extending substantially entirely between the forward surface of one of the knife holding arms and the rearward surface of the adjacent knife holding arm.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/133,506Filed 7 Oct 1993 · continuation
Priority: 13 Feb 1991
Granted: 11 Apr 1995
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B02C 18/365
Knives or perforated discs: perforated discs
B02C 18/302
With horizontal axis: with a knife-perforated disc unit
B02C 2018/308
Mincing machines with perforated discs and feeding worms: with separating devices for hard material, e.g. bone
B02C 2018/367
Knives or perforated discs: resiliently mounted knives or discs

Family

Serial654,942Parent of this continuation-in-part · filed 13 Feb 1991
Serial778,010Parent of this continuation-in-part · filed 17 Oct 1991
Serial856,665Parent of this continuation · filed 24 Mar 1992
US 5,251,829 AParent of this continuation-in-part · filed 12 Oct 1993
US 5,344,086 AParent of this continuation · filed 6 Sep 1994
US 5,289,979 AParent of this continuation-in-part
US 5,405,095 AThis patent

From the US filing history. Foreign family members aren’t listed.