Severing by tearing or breaking – Severing by manually forcing against fixed edge – With blade-edge guard
Patent
1989-07-20
1991-02-05
Wityshyn, Michael G.
Severing by tearing or breaking
Severing by manually forcing against fixed edge
With blade-edge guard
156527, 225 77, B26F 302
Patent
active
049897691
ABSTRACT:
A guard for teeth on a cutting blade comprising a guard portion having a side part adapted to lay along one side of the teeth and a projecting part adapted to project past the points of the teeth, an anchor portion adapted to be fixed to the blade at a position spaced from the teeth, and a hinge portion of resiliently flexible polymeric material joining the guard and anchor portions. The hinge portion affords movement of the guard portion relative to the anchor portion from a normal protecting position along and projecting past the teeth, to a cut position spaced from the teeth so that the teeth can be used to cut material, while biasing the guard portion to its normal protecting position.
REFERENCES:
patent: Re30787 (1981-11-01), Pool et al.
patent: 3552614 (1971-01-01), Wilson et al.
patent: 4379019 (1983-04-01), Pool
Betterley Todd R.
Longworth Frederic A.
Huebsch William L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Sell Donald M.
Wityshyn Michael G.
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