Formed or domed cutting teeth formed by improved double etching processes
OwnerRichard S. Smith, Louis Chalfantinventors
Life of this patent
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Abstract
A device and method for manufacture thereof having a one or more cantilevered cutting teeth integrally formed in raised configuration on a flat base fro cutting food items moved along said base. The free end portion is formed by upper and lower etched out portions of the upper end of said cutting teeth to form a cutting edge. The upper surface of the upper cut-out portion of the teeth is situation at a position out contact with food items being cut. A substantially portion of the teeth is coated with a low friction material, except for the cutting edge In a second embodiment one or more domed cutting elements are cut out of base sheet and may include a leading V-shaped cutting edge.
Claims20
A cutting device for cutting items comprising
- a base for receiving an item to be cut by movement along an axis generally parallel to said base,
- said base having at least one raised cantilevered tooth integrally affixed to said base at a lower end and being disposed above said base,
- said at least one tooth having an upper free end portion at having a shape defined by a lower etched cut-out portion and an upper etched cut-out portion, and
- said lower etched cut-out portion and said upper etched cut-out portion end forming a thin cutting edge on said upper free end portion for cutting.
A cutting device for cutting items comprising
- a base for receiving an item to be cut for movement along an axis generally parallel to said base,
- at least one cutting element being connected to said base in a raised orientation above an opening in said base,
- said at least one cutting element having a generally domed configuration integrally attached to said base and forming an internal chamber above said base opening,
- said at least one cutting element having a thickness less than said base and an upper leading edge forming a cutting edge disposed above an front opening in said cutting element leading into said internal chamber, and
- said upper leading edge being disposed in confronting relationship to an item being cut.
A method of producing a cutting element from a base comprising the steps of
- providing a base of metal for etching,
- subjecting the top and bottom surface of said base to an etching chemical to etch material out of said blank adjacent to the cutting edge portion being formed on said cutting element,
- said etching chemical creating upper and lower cut-out areas on said base to create the profile of a sharpening edge portion on said cutting element,
- forming an upper surface in said upper cut-out area in a predetermined configuration,
- mechanically forming said cutting tooth from said base such that the cutting tooth is angularly disposed on said base with said sharpening edge forming the free raised end of said cutting tooth, and
- forming said predetermined configuration of said upper surface in a manner such that said upper surface is out of contact with items to be cut by said cutting tooth after being mechanically formed.
A method of producing a cutting element from a base comprising the steps of
- providing an base of blank material,
- subjecting said base to an etching chemical to create the profile of at least one tooth and its cutting edge portion to be formed on said base,
- applying a coat of a non-stick resin to said base and at least one cutting element while masking said cutting edge portion to prevent the application of a coating thereon,
- and mechanically forming said cutting element out of said base in raised relationship.
Dependencies are inferred from the claim text.