Patent ID: 9321183
Filing Date: 2016-04-26
CPC Classification: A22C,B26B

Claim Text:
1. A thumb support positioned between a head assembly and a handle assembly of a power operated rotary knife, the thumb support including a thumb supporting surface to support a thumb of an operator's hand during operation of the power operated rotary knife, the thumb support comprising: a base portion; a thumb supporting portion including the thumb supporting surface; and an interface assembly between the thumb supporting portion and base portion for relative pivotal movement between the thumb supporting portion and the base portion, the base portion including an annular ring and an upper interface portion, the annular ring including an inner peripheral surface defining a cylindrical throughhore having a central longitudinal axis, the thumb supporting portion including the thumb supporting surface and a lower interface portion, the interface assembly including a pivoting coupling between the upper interface portion of the base portion and the lower interface portion of the thumb supporting portion, a pivot axis of the pivoting coupling being transverse to and intersecting the central longitudinal axis of the cylindrical throughbore of the base portion annular ring, the upper interface portion of the base portion including a keyway extending parallel to the central longitudinal axis of the cylindrical throughbore of the annular ring and including an entry portion at one end of the keyway, and the lower interface portion of the thumb supporting portion including a keyed portion, the keyed portion of the lower interface portion of the thumb supporting portion passing through the entry portion and being slidingly received in the keyway of the upper interface portion of the base portion to couple the base portion and the thumb supporting portion.