Detachable Knife Sheath Bonds Grinding Stones

Embodiments of the present invention comprises prior art features derived from numerous models of knife scabbards and the like such as U.S. Pat. Nos. 1,605,359A, 2,500,525A, EP2363256A1 also accommodating numerous types of attached grind devices preferably commonly known and referred to by those skilled in the art and referred within the present document as a knife sheath commonly carried and manually attached onto material belts for portage.

Prior art discloses means of attaching knife sheaths onto material belts with various clips described herein the present document including adherend grind stones.

The combination of the flexible clip and adhesive mounting of the grind stone and/or stones upon the sheath exterior walls is the novel embodiments of the invention described herein the present document.

The present invention provides a sufficiently flexible belt retaining clip detachment so it does not require the carrying belt to be undone for the sheath removal and the adherend first grind stone and/or second grind stone are handily available with the sheath instead of separate and possibly unavailable.

The present document discloses a detachable knife sheath invention providing grind stones are respectively bonding with one and/or two of the one and two opposing exterior walls in combination with a clip for sheath detachment and reattachment.

Referring now to the prior art grind stone as preferably at least one of a type providing one of a selected abrasive material including bonding or coating or covering upon a generally planar surface commonly referred to as a diamond stone or plate and others providing a generally planar first planar and generally planar abrasive surface.

The present invention knife sheath prior art in the form of a sufficiently flexible clip feature enabling manual clip-on attachment onto a material belt worn by those skilled in the art for carrying the knife sheath. The substantial flexible clip providing a hook lip captures the belt so that while attached the sheath is not unwantedly detached from the belt during everyday movements by the wearer or a kinetic force impact or entangled with foreign objects causing snagging.

The knife sheath is detachable by manually flexing the flexible clip increasing a gap distance in between the hook and the adjacent wall of the knife sheath and the material belt is passed through the enlarged gap and detaching the sheath from the material belt.

After detachment of the knife sheath one method skilled users hold the sheath in one hand and perform a grinding process of the knife edge upon the exterior facing abrasive surface disposed upon one and/or two of the grind stones and after the edge is re-made sharp the user may slide the belt in between the flexible clip hook and the adjacent wall re-attaching the knife sheath onto the material carrying belt.

Each one of the grind stone abrasive surface may be selected by those skilled in the art from a plurality of suitable available abrasive particle/particle sizes and types less than 10000 microns in diamonds, aluminum oxide, aluminum carbide, zirconium and others covering the surface.

Embodiments of the present invention include the combination of the detachable knife sheath sharpener's replaceable adherend first grind stone and/or second grind stone disposed upon the sheaths external wall surfaces preferably disposed within respective formed recess and belt retaining flexible hook features combined are a novel innovation.

The first grind stone and/or second grind stone are bonded with the respective knife sheath walls by an adhesive layer contact creating a permanent bond or a non-permanent adhesive bonding such as heat sensitive adhesives and double-sided adhesive tapes and the like so the grind stones are removeable when the respective abrasive particle surface in worn out and replaced by new grinding stones.

Preferably a recess portion is formed in the knife sheath's exterior walls for adhesive bond mounting the grind stone within. A portion of the exterior wall may protrude creating a finger guard protecting the user from accidental contact with the knife's blade edge. Preferably the sheath includes a hole throughout disposed at the second end for drainage and the inner space within the detachable knife sheath with mounted abrasives conforming to any one of the knives forms creating a secure snug fit to minimally reduce rattling sounds and securely holds the knife in place during everyday activity and remains removable.

depicts a perspective drawing of an embodiment of the knife sheath invention showing the flexible clip and disposed adjacent a grind stone abrasive surface preferably disposed within the wall recess in adhesive bonding contact with the first wall external surface.

depicts a perspective drawing of an embodiment of the knife sheath invention illustrating the opposing second wall and the inner space wherein a knife is inserted and a wall recess wherein a grind stone is disposable in adhesive bonding contact with the second wall external surface.

depicts a cross section drawing of an embodiment of the knife sheath invention illustrating a knife inserted within the inner space of the knife sheath and showing listed parts disclosed within the detailed description and showing the first grind stone adherend and a second grind stone adherend.

depicts a cross section drawing of an embodiment of the knife sheath invention and showing a first grind stone adherend.

depicts a cross section drawing of an embodiment of the knife sheath invention and showing a second grind stone adherend and the second wall external surface therefrom a portion extends externally forming a finger guard.

The present document discloses improved embodiments of a knife sheathhandily available features; a flexible clipprovides detachment from a carrying belt and re-attachment combined with adherends providing abrasive surfaces. Prior art knife sheaths include external surfaces that are bare and the present embodiment improves the bare external surfaces by disposing adherend grinding stones upon the exterior facing abrasive surfaces and available for sharpening when the knife sheathis detached from the belt and usually held by hand while sharpening is performed.

Referring tofrom here illustrating features of embodiments of the present invention of the knife sheathshowing; a first endadjacent to a first walltherefrom a substantial portion extending generally perpendicular, therefrom a portion extending generally horizontally and generally parallel respective to the first walltowardly a second end, therefrom extending a portion towardly the first wall, therefrom extending a portion towardly the first endterminates forming a clip hookforming a clip hook lipdisposed adjacent to a first wall external surfaceand these extensions from the first wallcreate a substantial arm providing sufficient tensile flex and the clip hook lipfor holding the knife sheathconnected onto the belt referred to as the flexible clipproviding a narrow gap in between the clip hook lipand the first wall external surface. This narrow gap, the hookand the hook lipassisting retaining the belt during attachment. For detachment the flexible clipis manually flexed increasing the narrow gap distance larger than the belt thickness so that the belt is able to be manually passed through thus detaching the knife sheath.

An adhesive layerselected from a plurality of adhesive layers bonding the first wall external surfacebonding a grind stone first planarof a first grind stone, a preferred embodied mounting position is disposed within a wall recessand the adhesive layerbonding the grind stone first planarof the first grind stonewithin the respective wall recessdisposed within the first wall external surfaceformed by a portion of the first wall external surfaceextending towardly the second wall internal surfaceforming at least one of the wall recess

The adhesive layerbonding a second wall external surfacebonding the grind stone first planarof a second grind stone, a preferred disposed position the adhesive layerbonding the grind stone first planarof the second grind stonewithin the wall recessdisposed within the second wall external surfaceformed by a portion of the second wall external surfaceextending generally perpendicular towardly the second wall internal surfaceforming least one of the wall recess

The first grind stoneand the second grind stonedisposed within the respective wall recessprotects the adhesive layeradherends from separation caused by an object forcing in between adherend surfaces and recessing also streamlines the external shape so the grind stone is surface is closer to the knife sheath external surface.

The body of the knife sheath terminates at the second endand opposing side walls extend from the first walland one of a second walland the shape of the knife sheathcreated generally conforms to the respective selected the knifeshape inserted into an inner spacein between a first wall internal surfaceand a second wall internal surface

Each one of the first wall external surfaceand a second wall external surfaceprovide at least one of a generally planar portion and preferably the wall recesssurface is generally planar for the adhesive layerbonding with the respective adherend parts surfaces.

The adhesive layerrequiring or not requiring a primer for improved adhesion bonding with the respective adherends selected from a plurality of suitable adhesives known to those skilled in the art providing permanent and high tack bonding fixtures and/or non-permanent removeable bonding such as a double-sided tape adhesive layer and a temperature sensitive adhesive layer and the selected adhesive bonds with the grind stone first planarbonding with the first wall external surfaceand/or bonding the second wall external surfaceenabling the grind stone to be manually removeable by separation of the adherends such as by inserting an edged object in between surfaces and leveraging the adherends apart or dextrously physically pulling the adherends apart and also heating wherein the adhesive layeris temperature sensitive whereby heat conduction applied causes the adhesive layerbonding force to weaken for removal of the grind stone first planarand replacement of the abrasive surface. Renewal replacement is normally due to abrasive particle loss or breakdown from repetitious grind use, replacing with the first grind stoneand/or the second grind stonepreferably adherend joined within the respective wall recessor onto the respective wall external bare surface.

Preferable use of the embodiment of the present invention by those skilled in the art; manual detachment of the knife sheathfrom the carrying belt is carried out by dextrously flexing the flexible clipincreasing the distance between the clip hookand the first walland passing the belt through the gap. The skilled user extracts the knife held in place by a sufficient friction force from the sheathinner spaceand the knifeedge is manually sharpened upon abrasive particles and sizes selected from a plurality provides the abrasive surface. When satisfactory grinding of the knifeedge is accomplished the knife sheathis reattached by sliding the belt through the gap in between the clip hook lipof the flexible clipand the first wall external surfacereturning the knife sheathonto on to the carrying belt. After use the knifeis now re-inserted into the inner space.

The knifeexternal shape depicted byis merely one representation of the shape of the knifethe present embodiment the knife sheathinvention is able to retain. The knife sheathis able to be manufactured to fit the knifeshape as per other prior art knife sheaths selected from a plurality of folding knives, retractable blade knives, fixed blades, tools and other descriptions providing blades and the knife sheathgenerally conforms to the knifeselective shape creating a tensioned snug fit providing minimal rattle noise so that it is quiet when carried on the belt and a suitable friction force holds the knife in place.

Separation method of the adhesive layeradherends when a temperature sensitive adhesive is bonding in adherend contact to replace the abrasive surfacewhen it has lost abrasiveness is by applying a heat temperature directly to the first grind stoneor the second grind stone, in one case placing the knife sheathin heated water and conduction melts the adhesive layer. This method requires the knife sheathmaterial having a higher melting temperature than the heated water temperature. After removal a meltable temperature sensitive adhesive selected from a plurality is applied coating onto the replacement grind stone first planarand manually pressing together the first grind stoneand/or the second grind stonewith the respective wall recessor external surface of the knife sheathand when the hot glue is cool it solidifies forming the adhesive layerbond.

A pressure sensitive double-sided adhesive tape may also be used for the adhesive layerbond of the grind stone first planarbonding with the first wall external surfaceand/or the second wall external surfaceor preferably bonding disposed within the respective wall recess. The double-sided tape is removed from the adherend and pressing the replacement onto the respective surfaces forming the adherends adhesive layer bonds.

The present knife sheath inventionis shown in one embodiment providing the first grind stone[see] and shown in another embodiment providing the second grind stone[see] and shown in another embodiment providing the first grind stoneand the second grind stone[see] and the second wall external surfacetherefrom extends externally forming a finger guardand can be formed upon the first wall external surface