Cutlery – Cutting tools – With blade moving means
Reexamination Certificate
2000-07-31
2002-01-29
Watts, Douglas D. (Department: 3724)
Cutlery
Cutting tools
With blade moving means
C030S142000, C206S372000
Reexamination Certificate
active
06341425
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to electric knives and, more specifically, to cordless electric fillet knives. The field of electric knives is well represented in prior art. Several methods for producing cutting are known: using either one blade or a set of two blades with serrated edges joined together side-by-side can be made to cut using electromechanical means to produce a continuous series of back and forth repetitive axial movements of the blade with respect to the blade handle. Variations exist within this class of movement for the two blade configuration wherein one blade is fixed to the handle and the other is secured to the fixed blade in such a way as to allow it to slide in a limited displacement axial motion by the action of a motor to which the movable blade is connected by any of a variety of means. Another method is to connect both blades to each other as in the previous example and, in turn, to a electromechanical means of producing a reciprocating movement of the blades against one another. This axial movement produces either a slicing or shearing action for the one or two blade configuration devices respectively. Various alternative means for producing this type of motion have been protected as well as additional features such as offset blades for cutting inside recesses. Cordless and battery operated devices are also well known and well represented in this field. However, in applying this type of power source to fishing knives and specifically to filleting knives, no known example of prior art has dealt with the attendant problems of cordless day and night operation of electromechanical actuated filleting knives around and, on the occasion of accident, within a water environment.
The present invention, the Cordless Electric Fillet Knife, is the only known device of its kind to successfully deal with this problem. The present invention is basically a standard electric knife with several built-in enhancements which make it uniquely suited for use in its intended watery environment. In case it is accidentally dropped in the water, it has several floatation chambers in the handle and the end cap that will keep it afloat and nearly waterfree for a long time, certainly time enough for any reasonably serious effort at retrieval to be effective without incurring any water damage whatsoever. The only area not completely watertight is at the juncture of the knife and handle, which is water-resistant. The critical areas around switches and access openings are watertight. There is also a light in the top front area of the handle for night or low visibility conditions. The Cordless Electric Fillet Knife is just what the inveterate fisherman has been waiting for.
2. Description of the Prior Art
There are other electric knife devices designed for culinary application. Typical of these is U.S. Pat. No. 4,593,466 issued to William J O'Brien on Jun. 10, 1986.
Another patent was issued to Robert B. Ruston, Sr. on Dec. 8, 1997 as U.S. Pat. No. 4,711,030. Yet another U.S. Pat. No. 4,891,884 was issued to Philip Torbet on Jan. 9, 1990 and still yet another was issued on May 1, 1990 to George A. Moore as U.S. Pat. No. 4,920,612.
Another patent was issued to Richard B. Maxcy on Apr. 4, 1995 as U.S. Pat. No. 5,402,575. Yet another U.S. Pat. No. 5,845,404 was issued to Norman C. Jeffcoat on Dec. 8, 1998. Another was issued to Don R. McCloskey on Dec. 2, 1986 as U.S. Pat. No. Des. 286,969 and still yet another was issued on Nov. 20, 1990 to Jean-Louis Barrault as U.S. Pat. No. Des. 312,192. Another patent was issued on Dec. 30, 1997 to Amir M. Neshat as U.S. Pat. No. Des. 388,285 and still another was issued to Shigehiro Uemura, et al. On Jul. 6, 1999 as U.S. Pat. No. Des. 411,785.
U.S. Pat. No. 4,593,466
Inventor: William J O'Brien
Issued: Jun. 10, 1986
An electric knife of the kind having an elongated handle that serves as a container for a driving electric motor, a pair of blades projecting in an axial direction from the handle, the blades being releasably secured to a drive connected to the motor in such a manner that the blades are reciprocated so as to move in sliding contact with each other the blades having serrated cutting edges, which is characterized by the feature that the line containing the serrated cutting edge of each of the blades is off set from the axis of the handle in such a manner that if the line is extended in the direction of the handle there is a space between the line and any adjacent portion of the handle.
U.S. Pat. No. 4,711,030
Inventor: Robert B. Ruston
Issued: Dec. 8, 1997
A portable, hand-held electric knife having dual cutting blades is powered by a DC electric motor which draws its operating current from a remote storage battery. The cutting blades are mechanically coupled to the armature shaft of the DC electric motor by a gear assembly in which a pair of bevel gears are mounted for free rotation on a support shaft and are engaged by a beveled pinion gear attached to the rotor armature. Each blade is movably coupled to a selected bevel gear by a pin. In response to rotation of the drive pinion, the beveled gears are driven in counter-rotating motion. As the driven gears rotate, the blades are extended and retracted in side-by-side relation. A fulcrum shaft is received through aligned slots formed in the blades. Linear reciprocating movement of the blades relative to each other is stabilized and arcuate reciprocating movement of the coupled blades is effected as the blades pivot about the fulcrum shaft. According to this arrangement, the coupled blades undergo simultaneous linear reciprocal movement along parallel paths of extension and retraction, and arcuate reciprocal movement about a path transverse thereto.
U.S. Pat. No. 4,891,884
Inventor: Philip Torbet
Issued: Jan. 9, 1990
A light weight hand holdable appliance having a plurality of blade-like components for slicing peeling and the like. The appliance preferably is cordless and rechargeable and has a handle assembly within which is a high speed motor, a reciprocating mechanism and an interconnecting gear reduction and cam means for translating the high speed rotation of the motor to a powerful reciprocating stroke of the mechanism. The blade-like components include a knife having a thin single blade, particularly suitable for slicing, and a peeler having a thin single peeling blade and a guide spaced therefrom to facilitate peeling.
U.S. Pat. No. 4,920,612
Inventor: George A. Moore
Issued: May 1, 1990
A knife for filleting fish includes a generally flat cutting blade disposed in a first plane and having a proximal end and a distal end. A generally flat boning blade is disposed in a second plane and has a proximal end, a distal end and a cutting edge. The proximal end of the boning blade is attached to the distal end of the cutting blade in a manner such that the first plane of the cutting blade and the second plane of the boning blade are generally normal to one another. A handle is attached to the proximal end of the cutting blade and the knife thereby permits cutting of a fish along either of two cutting axes without substantially changing the orientation of the knife with respect to the fish.
Several embodiments are disclosed.
U.S. Pat. No. 5,402,575
Inventor: Richard B. Maxcy
Issued: Apr. 4, 1995
The folding knife has a handle provided with a blade support the intermediate part thereof being of less width than the first and second end. A lengthwise slot in the front edge extends through the first end to provide a fork and the bottom of the slot is so spaced from the back edge of the handle to provide a section having a chamber opening through the sides of the section when one of the side covers of the handle is removed. A passageway from the chamber opens through the second end of the blade support and is closed by a lens. A battery and a switch assembly fit in the chamber with the switch assembly provided with a tubular lamp socket which, when the battery and assembly are held by a grounding spring in an operative p
Kroll Michael I.
Watts Douglas D.
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