US20190231038A1 - Mandrel tool - Google Patents
Mandrel tool Download PDFInfo
- Publication number
- US20190231038A1 US20190231038A1 US15/882,183 US201815882183A US2019231038A1 US 20190231038 A1 US20190231038 A1 US 20190231038A1 US 201815882183 A US201815882183 A US 201815882183A US 2019231038 A1 US2019231038 A1 US 2019231038A1
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- Prior art keywords
- mandrel
- slit
- border
- present
- disposed
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C27/00—Making jewellery or other personal adornments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F37/00—Manufacture of rings from wire
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F45/00—Wire-working in the manufacture of other particular articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21L—MAKING METAL CHAINS
- B21L11/00—Making chains or chain links of special shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21L—MAKING METAL CHAINS
- B21L11/00—Making chains or chain links of special shape
- B21L11/005—Making ornamental chains
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21L—MAKING METAL CHAINS
- B21L19/00—Appurtenances for chain-making not restricted to any particular process
Definitions
- the present invention relates to tools for making jewelry. Even more particularly, the present invention involves a mandrel having a slit or channel that enables the formation of wire loops used in forming jewelry.
- Mandrels are hand tools used in jewelry making. Mandrels may be used to create jewelry of desired shapes and sizes out of blank material, such as a wire. For example, a mandrel may be used to produce a plurality of rings having the same or varying shapes and sizes by, for example, winding wire about the mandrel. However, further work performed on the individual rings afterwards may cause uneven and visible differences between the rings due to process variations.
- Another object of the present invention is to provide a mandrel tool that users saves time and effort in the construction of jewelry.
- a mandrel tool comprising a mandrel head having a body, said body including a first end, a second end opposite to the first end, and an exterior surface extending between the first and second ends; and a slit extending at least partially through the exterior surface of the body and having a width to accommodate a sharp edge of a cutting instrument.
- the slit which serves as a cutting guide for the cutting instrument, the cutting instrument cuts through wire wound around the mandrel to simultaneously create a plurality of uniform rings without having to labor further.
- FIG. 1A is a perspective view illustrating a mandrel, including a mandrel head and handle, according to an exemplary embodiment of the present invention
- FIG. 1B is a side view illustrating the mandrel and handle of FIG. 1A , according to an exemplary embodiment of the present invention
- FIG. 1C is a top plan view illustrating the mandrel of FIG. 1A , according to an exemplary embodiment of the present invention
- FIG. 1D is a side view illustrating the mandrel of FIG. 1A , according to an exemplary embodiment of the present invention
- FIG. 1E is an exploded perspective view illustrating the mandrel of FIG. 1A , according to an exemplary embodiment of the present invention
- FIG. 2 is a perspective view illustrating a mandrel head according to a first alternate embodiment of the present invention
- FIG. 3 is a perspective view illustrating a mandrel head according to a second alternate embodiment of the present invention.
- FIG. 4 is a perspective view illustrating a mandrel head according to a third alternate embodiment of the present invention.
- FIG. 5 is a perspective view illustrating a mandrel head according to a fourth alternate embodiment of the present invention.
- the present invention relates to mandrels used to form rings or closed-loops of various sizes and/or shapes by winding wire or other material about the mandrel.
- the shape of the ring is determined by the shape of the mandrel head.
- wire is continuously wound about the mandrel to form a sequence of consecutive loops, the loops are cut at a slit positioned on the surface of the mandrel to form a plurality of uniform and/or uniformly proportioned rings.
- the mandrel head includes a slit that penetrates two surfaces of mandrel.
- the slit passes through two adjoining surfaces of the mandrel (e.g., front end and a side), or through a portion of the body and/or an end portion of the mandrel head.
- the slit may be used as a guide to saw off wire continuously looped around the mandrel to form rings or objects of other shapes.
- FIGS. 1A to 1E illustrate a mandrel 100 and a handle 150 according to an exemplary embodiment of the present invention.
- Mandrel 100 includes a mandrel head 101 having a body 102 , a base 104 , a first end 106 , a second end 108 , a plurality of sides 110 , a plurality of side-to-side edges 112 , a plurality of side-to-end edges 114 , at least one starting hole 116 , and a slit 118 .
- Handle 105 may be referred to as a support member. Referring to FIG. 1E , handle 105 includes a connection member 152 , such as a threaded screw-end. Handle 105 is configured to be detachably coupled to mandrel 100 through connection member 152 . Base 104 of mandrel 100 may include a cavity (not shown) configured to be detachably coupled to the connection member 152 .
- mandrel 100 omits base 104 .
- handle 105 may be detachably coupled to mandrel 100 through body 102 .
- body 102 may include a cavity (not shown) configured to be detachably coupled to the connection member 152 .
- FIGS. 1A to 1E mandrel 100 and handle 150 are illustrated in a coupled state.
- connection member 152 may be connected to mandrel 100 , and the cavity (not shown) may be disposed on handle 105 .
- the coupling mechanism illustrated in FIGS. 1 to 5 is not limited to the disclosed threaded connection member 152 and a threaded cavity (not shown) on mandrel 100 .
- Other detachable coupling mechanism may be employed, for example, a coupling rod with a protruding ball-on-a-spring connected to one of mandrel 100 and handle 150 , and a coupling hole with a socket configured to accommodate the protruding ball disposed on the other of mandrel 100 and handle 150 , etc.
- Body 102 may include a polygonal prism (e.g., a square prism) including a plurality (e.g., four) sides 110 , as shown in FIGS. 1A to 1E .
- Sides 110 may also be referred to as surfaces 110 .
- Sides 110 may be flat, as illustrated in FIGS. 1A to 1E .
- the present invention is not limited thereto.
- Edges 112 may be angular (e.g., not rounded or beveled), as illustrated in FIGS. 1A to 1E . However, the present invention is not limited thereto, and edges 112 may also be beveled and/or rounded. In addition, a first edge 112 may be different from a second edge 112 . For example, the first edge 112 may be at least partially rounded, and the second edge 112 may be at least partially angular, and a third edge 112 may be at least partially beveled. In addition, any of edges 112 may include an angular portion, a beveled portion, and/or a rounded portion.
- references to “loops” or “rings” may generally connote rounded or curved shapes, it should be appreciated and understood that references to “loops” or “rings” herein are not limited to rounded or curved shapes and also include angular shapes, including squares, triangles and other polygonal shapes.
- First end 106 may be flat, as shown in FIGS. 1A to 1E .
- first end 106 may include a first flat portion, a second concave portion, and/or a third convex portion.
- first end 106 may be shaped like a concave or convex pyramid with as many sides as the number of sides 110 .
- Edges 114 may be formed between sides 110 and first end 106 . As shown in FIGS. 1A to 1E , edges 114 may be angular. However, the present invention is not limited thereto, and edges 114 may also be rounded and/or beveled. For example, a first edge 114 may be at least partially angular, a second edge 114 may be at least partially rounded, and/or a third edge 114 may be at least partially beveled. In addition, any of edges 114 may include at least an angular portion, at least a beveled portion and/or at least a rounded portion.
- Starting hole 116 may be disposed on first end 106 , as shown in FIGS. 1A to 1E .
- Hole 116 may partially penetrate body 102 , for example, in a direction toward base 104 .
- a plurality of holes 116 may be included in various locations of mandrel 100 .
- a first hole 116 may be disposed on first end 106
- a second hole 116 may be disposed on base 104
- a third hole 116 may be disposed anywhere on body 102 , etc.
- holes 116 may be referred to as a starter hole because a wire or other blank material of various shapes and/or sizes (the wire or other blank material may be collectively referred to as “material that is external to body 102 ”) may be inserted in any of the holes to facilitate the start of the winding process to form continuous loops or rings on body 102 .
- Slit 118 may extend at least partially through at least one of sides 110 and at least partially through first end 106 , as shown in FIGS. 1A to 1E .
- slit 118 may extend at least partially through at least one of edges 112 and through first end 106 .
- slit 118 may penetrate at least a portion of first side 110 , the entire first end 106 , and a portion of a second side 110 opposite to the first side 110 .
- slit 118 may extend throughout the entire length of a side 110 and/or through the entire length of first end 106 .
- slit 118 may extend thorough two opposite edges 112 and/or a portion of first end 116 .
- first and second surfaces may be connected to each other, as shown in FIGS. 1A to 1E .
- Bottom surface 120 of slit 118 may extend, for example, in an oblique direction with respect to a side 110 and/or first end 106 , as shown in FIGS. 1A to 1E .
- Bottom surface 120 may be smooth and/or curved, as shown in FIGS. 1A to 1E , straight, or zig-zag (e.g., stepped).
- slit 118 is a partial or full penetration groove or channel that extends in a portion of body 102 of mandrel head 101 , penetrating at least one of sides 110 but not first end 106 .
- slit 118 may for example partially or fully penetrate body 102 but not penetrate first end 106 (e.g., it does not come out of first end 106 ).
- slit 118 may be an opening in one or more of sides 110 , and may look, for example, similar to slit 118 in FIG. 1A , but first end 106 would be closed (e.g., full section) since slit 118 would not penetrate first end 106 .
- Slit 118 may also have a 90° step or a “V”-shaped bottom end 120 , whether extending (e.g., penetrating) through first end 106 or not.
- slit 118 may be disposed at a central portion (or middle portion) of edge 114 . However, slit 118 may be disposed at any point along edge 114 , including a corner formed between a pair of neighboring sides 110 and the first end 106 .
- a depth of slit 118 may be substantially perpendicularly with respect to side 110 and/or first end 106 , as shown in FIGS. 1A to 1E .
- the alignment (e.g., extending direction) of slit 118 along the surface of side 110 may be substantially parallel to the extending direction of the body 102 , or substantially parallel to edges 112 , as shown in FIGS. 1A to 1E .
- the present invention is not limited thereto.
- a saw or other cutting instrument When winding a plurality of adjoining loops of wire on mandrel, a saw or other cutting instrument may be guided by slit 118 , and may be inserted into slit 118 to cut the adjoining loops into individual rings.
- openings resulting in the rings from the cutting process may have corresponding locations along the perimeter of each of the rings.
- the resulting rings may be substantially uniform.
- slit 118 is disposed within body 102 , the rings can be expeditiously cut while supported on the body 102 . Accordingly, the use of slit 118 may increase accuracy, consistency and throughput of production (e.g., of making jewelry or other objects).
- slit 118 substantially reduces the undesirable effects of a hand snipping tool, which may cut different rings at different locations along their perimeters, or damage the rings when the wound wire is not resting on a supporting surface.
- the use mandrel 100 including slit 118 eliminates the need for an additional tool with a supporting surface to support the wound wire while cutting it because the wound wire can be cut on mandrel 100 .
- mandrel 100 may include a plurality of slits 118 .
- FIG. 2 is a perspective view illustrating a mandrel 200 according to an exemplary embodiment of the present invention.
- Mandrel 200 may include a body 202 , a base 204 , a first end 206 , a second end 208 , a plurality of sides 210 , a plurality of edges 212 , a plurality of edges 214 , a plurality of holes 216 , and a slit 218 with a bottom surface 220 .
- Mandrel 200 may be configured to be detachably coupled with handle 150 , as described above in connection with mandrel 100 .
- mandrel 200 includes a polygonal prism (e.g., a square prism) body, and a plurality of beveled edges 212 .
- a polygonal prism e.g., a square prism
- beveled edges 212 e.g., a plurality of beveled edges
- mandrel 200 may include a plurality of holes 216 on first end 206 .
- mandrel 200 may assumed to be similar to their corresponding counterparts described above. Thus, a detailed description thereof will be omitted for brevity.
- FIG. 3 is a perspective view illustrating a mandrel 300 according to an exemplary embodiment of the present invention.
- Mandrel 300 may include a body 302 including an exterior surface 322 , a base 304 , a first end 306 , a second end 308 , an edge 314 , at least one hole 316 , and a slit 318 with a bottom surface 320 .
- Mandrel 300 may be configured to be detachably coupled with handle 150 , as described above in connection with mandrel 100 .
- body 302 may include a cylindrical portion with a cylindrical surface 322 .
- First end 306 may be circular, as shown in FIG. 3 .
- mandrel 300 may be used to form round loops or rings.
- slit 318 may be disposed at any point along edge 314 and/or the outer perimeter of cylindrical surface 322 .
- slit 318 may extend radially with respect to cylindrical surface 322 , circular first end 306 , and/or edge 114 .
- first end 306 When first end 306 is a convex half-sphere, body 302 and first end 306 may form a continuous surface without edge 314 .
- slit 318 may extend through body 302 through at least a portion of cylindrical surface 322 , and through the convex half-sphere first end 306 .
- the alignment e.g., direction of depth and direction in which slit 318 extends
- first end 306 when first end 306 is a concave half-sphere, and slit 318 may extend through at least a portion of cylindrical surface 322 , and through the concave half-sphere first end 306 . It is understood that first end 306 may have various shapes, and that slit 318 may extend through at least a portion of cylindrical surface 322 , and through the first end 306 , regardless of its shape.
- edge 314 may be rounded to form a continuous surface between body 302 and first end 306 . In an exemplary embodiment of the present invention, edge 314 may be beveled.
- slit 318 may be a groove or slit having an opening in cylindrical surface 322 .
- slit 318 may be a partial penetration groove or slit, or a full penetration groove or slit passing through, for example, diametrically opposite ends of body 302 .
- mandrel 300 may assumed to be similar to their corresponding counterparts described above. Thus, a detailed description thereof will be omitted for brevity.
- FIG. 4 is a perspective view illustrating a mandrel 400 according to an exemplary embodiment of the present invention.
- Mandrel 400 may include a body 402 including an exterior surface 422 , a base 404 , a first end 406 , a second end 408 , an edge 414 , a plurality of holes 416 , and a slit 418 with a bottom surface 420 .
- Mandrel 400 may be configured to be detachably coupled with handle 150 , as described above in connection with mandrel 100 .
- body 402 may include an elliptic cylinder, and may include an elliptic cylindrical surface 422 .
- First end 406 may be elliptic, as shown in FIG. 4 .
- mandrel 400 may be used to form elliptical loops or rings.
- slit 418 may be disposed (or extend) along the major axis of elliptic cylinder body 402 and first end 406 . However, it is understood that slit 418 may be disposed at any point along the exterior perimeter of elliptic cylindrical surface 422 , edge 414 , and/or elliptic first end 406 . In an exemplary embodiment of the present invention, slit 418 is disposed (or extends) along the minor axis of the exterior perimeter of elliptic cylindrical surface 422 , edge 414 , and/or elliptic first end 406 .
- first end 406 When first end 406 is a convex half-ellipsoid, body 402 and first end 406 may form a continuous surface without edge 414 .
- slit 418 may extend through body 402 through at least a portion of elliptic cylindrical surface 422 , and through the convex half-ellipsoid first end 406 .
- the alignment e.g., direction of depth and direction in which slit 418 extends, may be the same as previously described.
- edge 414 may be rounded to form a continuous surface between body 402 and first end 406 . In an exemplary embodiment of the present invention, edge 414 may be beveled.
- slit 418 may be a groove or slit having an opening in elliptic cylindrical surface 422 .
- slit 418 may be a partial penetration groove or slit, or a full penetration groove or slit passing through, for example, opposite ends of body 402 .
- mandrel 400 may assumed to be similar to their corresponding counterparts described above. Thus, a detailed description thereof will be omitted for brevity.
- FIG. 5 is a perspective view illustrating a mandrel 500 according to an exemplary embodiment of the present invention.
- Mandrel 500 may include a body 502 , a base 504 , a first end 506 , a second end 508 , a plurality of sides 510 , a plurality of edges 512 , a plurality of edges 514 , a plurality of holes 516 , and a slit 518 with a bottom surface 520 .
- Mandrel 500 may be configured to be detachably coupled with handle 150 , as described above in connection with mandrel 100 .
- mandrel 200 includes a polygonal prism (e.g., a triangular prism) body 502 , and a plurality of edges 512 .
- a polygonal prism e.g., a triangular prism
- mandrel 500 may be used to form triangular loops or rings.
- a hole 516 may overlap slit 518 .
- Edges 512 and/or 514 may be at least partially angular, rounded and/or beveled, as described above with reference to edges 112 and 114 of FIGS. 1A to 1E .
- Slit 518 may be disposed at a middle of an edge 514 , as shown in FIG. 5 , or at any other location along any edge 514 , including a corner formed between two adjacent sides 510 and first end 506 .
- slit 518 may be a partially penetrating slit, as shown in FIG. 5 , or slit 518 may fully penetrate through adjacent surfaces 510 , or through an edge 514 and a corner formed between two adjacent sides 510 and first end 506 .
- slit 518 does not penetrate first end 506 , and may penetrate body 502 at least partially thorough one of sides 510 and/or edges 514 .
- mandrel 500 may assumed to be similar to their corresponding counterparts described above. Thus, a detailed description thereof will be omitted for brevity.
- the body of a mandrel may include a polygonal prism shape, or a shape having flat portions in combination with round/curved portions.
- the body of the mandrel illustrated in each of FIGS. 1A to 1E and FIGS. 2 to 4 is shown to have a full cross-section, it is understood that the body may also be hollow.
- a plurality of rings of various sizes and/or shapes may be efficiently and uniformly formed by using a mandrel with a slit as described above.
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Abstract
A mandrel tool comprising a mandrel head having a body, said body including a first end, a second end opposite to the first end, and an exterior surface extending between the first and second ends; and a slit extending at least partially through the exterior surface of the body and having a width to accommodate a sharp edge of a cutting instrument. The slit serves as a guide for the cutting instrument, which cuts through wire wound around the mandrel to simultaneously create a plurality of uniform rings without having to labor further.
Description
- The present invention relates to tools for making jewelry. Even more particularly, the present invention involves a mandrel having a slit or channel that enables the formation of wire loops used in forming jewelry.
- Mandrels are hand tools used in jewelry making. Mandrels may be used to create jewelry of desired shapes and sizes out of blank material, such as a wire. For example, a mandrel may be used to produce a plurality of rings having the same or varying shapes and sizes by, for example, winding wire about the mandrel. However, further work performed on the individual rings afterwards may cause uneven and visible differences between the rings due to process variations.
- In view of the limitations and drawbacks in the prior art, it is a primary object of the present invention to provide a mandrel tool to simultaneously form a plurality of rings having a uniform shape and features.
- Another object of the present invention is to provide a mandrel tool that users saves time and effort in the construction of jewelry.
- Additional objectives will be apparent from the description of the invention that follows.
- In summary, there is provided in a preferred embodiment of the present invention a mandrel tool comprising a mandrel head having a body, said body including a first end, a second end opposite to the first end, and an exterior surface extending between the first and second ends; and a slit extending at least partially through the exterior surface of the body and having a width to accommodate a sharp edge of a cutting instrument. By virtue of the slit, which serves as a cutting guide for the cutting instrument, the cutting instrument cuts through wire wound around the mandrel to simultaneously create a plurality of uniform rings without having to labor further.
- The above and other features and aspects of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the accompanying drawings, in which:
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FIG. 1A is a perspective view illustrating a mandrel, including a mandrel head and handle, according to an exemplary embodiment of the present invention; -
FIG. 1B is a side view illustrating the mandrel and handle ofFIG. 1A , according to an exemplary embodiment of the present invention; -
FIG. 1C is a top plan view illustrating the mandrel ofFIG. 1A , according to an exemplary embodiment of the present invention; -
FIG. 1D is a side view illustrating the mandrel ofFIG. 1A , according to an exemplary embodiment of the present invention; -
FIG. 1E is an exploded perspective view illustrating the mandrel ofFIG. 1A , according to an exemplary embodiment of the present invention; -
FIG. 2 is a perspective view illustrating a mandrel head according to a first alternate embodiment of the present invention; -
FIG. 3 is a perspective view illustrating a mandrel head according to a second alternate embodiment of the present invention; -
FIG. 4 is a perspective view illustrating a mandrel head according to a third alternate embodiment of the present invention; and -
FIG. 5 is a perspective view illustrating a mandrel head according to a fourth alternate embodiment of the present invention. - Exemplary embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings. The present invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Like reference numerals may refer to like elements throughout the specification. The sizes or proportions of elements illustrated in the drawings may be exaggerated for clarity. When an element is described as being on another element, the element may be directly disposed on the other element or intervening elements may be disposed therebetween. Elements of an embodiment that are not described in detail may be assumed to be similar to corresponding elements described in detail in the specification.
- The present invention relates to mandrels used to form rings or closed-loops of various sizes and/or shapes by winding wire or other material about the mandrel. The shape of the ring is determined by the shape of the mandrel head. As wire is continuously wound about the mandrel to form a sequence of consecutive loops, the loops are cut at a slit positioned on the surface of the mandrel to form a plurality of uniform and/or uniformly proportioned rings.
- According to an exemplary embodiment of the present invention, the mandrel head includes a slit that penetrates two surfaces of mandrel. In particular, the slit passes through two adjoining surfaces of the mandrel (e.g., front end and a side), or through a portion of the body and/or an end portion of the mandrel head. The slit may be used as a guide to saw off wire continuously looped around the mandrel to form rings or objects of other shapes.
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FIGS. 1A to 1E illustrate amandrel 100 and ahandle 150 according to an exemplary embodiment of the present invention. - Mandrel 100 includes a
mandrel head 101 having abody 102, abase 104, afirst end 106, asecond end 108, a plurality ofsides 110, a plurality of side-to-side edges 112, a plurality of side-to-end edges 114, at least one startinghole 116, and aslit 118. - Handle 105 may be referred to as a support member. Referring to
FIG. 1E , handle 105 includes aconnection member 152, such as a threaded screw-end. Handle 105 is configured to be detachably coupled tomandrel 100 throughconnection member 152.Base 104 ofmandrel 100 may include a cavity (not shown) configured to be detachably coupled to theconnection member 152. - In an exemplary embodiment of the present invention,
mandrel 100omits base 104. In this case, handle 105 may be detachably coupled tomandrel 100 throughbody 102. For example,body 102 may include a cavity (not shown) configured to be detachably coupled to theconnection member 152. - In
FIGS. 1A to 1E ,mandrel 100 andhandle 150 are illustrated in a coupled state. - It is understood that in an exemplary embodiment of the present invention, the
connection member 152 may be connected tomandrel 100, and the cavity (not shown) may be disposed on handle 105. - In addition, the coupling mechanism illustrated in
FIGS. 1 to 5 is not limited to the disclosed threadedconnection member 152 and a threaded cavity (not shown) onmandrel 100. Other detachable coupling mechanism may be employed, for example, a coupling rod with a protruding ball-on-a-spring connected to one ofmandrel 100 and handle 150, and a coupling hole with a socket configured to accommodate the protruding ball disposed on the other ofmandrel 100 and handle 150, etc. -
Body 102 may include a polygonal prism (e.g., a square prism) including a plurality (e.g., four)sides 110, as shown inFIGS. 1A to 1E .Sides 110 may also be referred to assurfaces 110.Sides 110 may be flat, as illustrated inFIGS. 1A to 1E . However, the present invention is not limited thereto. -
Edges 112 may be angular (e.g., not rounded or beveled), as illustrated inFIGS. 1A to 1E . However, the present invention is not limited thereto, and edges 112 may also be beveled and/or rounded. In addition, afirst edge 112 may be different from asecond edge 112. For example, thefirst edge 112 may be at least partially rounded, and thesecond edge 112 may be at least partially angular, and athird edge 112 may be at least partially beveled. In addition, any ofedges 112 may include an angular portion, a beveled portion, and/or a rounded portion. In that regard, although the references to “loops” or “rings” may generally connote rounded or curved shapes, it should be appreciated and understood that references to “loops” or “rings” herein are not limited to rounded or curved shapes and also include angular shapes, including squares, triangles and other polygonal shapes. -
First end 106 may be flat, as shown inFIGS. 1A to 1E . However, the present invention is not limited thereto. For example,first end 106 may include a first flat portion, a second concave portion, and/or a third convex portion. In addition, although not shown,first end 106 may be shaped like a concave or convex pyramid with as many sides as the number ofsides 110. -
Edges 114 may be formed betweensides 110 andfirst end 106. As shown inFIGS. 1A to 1E , edges 114 may be angular. However, the present invention is not limited thereto, and edges 114 may also be rounded and/or beveled. For example, afirst edge 114 may be at least partially angular, asecond edge 114 may be at least partially rounded, and/or athird edge 114 may be at least partially beveled. In addition, any ofedges 114 may include at least an angular portion, at least a beveled portion and/or at least a rounded portion. - Starting
hole 116 may be disposed onfirst end 106, as shown inFIGS. 1A to 1E .Hole 116 may partially penetratebody 102, for example, in a direction towardbase 104. However, it is understood that a plurality ofholes 116 may be included in various locations ofmandrel 100. For example, afirst hole 116 may be disposed onfirst end 106, and asecond hole 116 may be disposed onbase 104, athird hole 116 may be disposed anywhere onbody 102, etc. - Any of
holes 116 may be referred to as a starter hole because a wire or other blank material of various shapes and/or sizes (the wire or other blank material may be collectively referred to as “material that is external tobody 102”) may be inserted in any of the holes to facilitate the start of the winding process to form continuous loops or rings onbody 102. -
Slit 118 may extend at least partially through at least one ofsides 110 and at least partially throughfirst end 106, as shown inFIGS. 1A to 1E . In addition, as an alternative, slit 118 may extend at least partially through at least one ofedges 112 and throughfirst end 106. However, it is understood that the present invention is not limited thereto. For example, in an exemplary embodiment of the present invention, slit 118 may penetrate at least a portion offirst side 110, the entirefirst end 106, and a portion of asecond side 110 opposite to thefirst side 110. In addition, slit 118 may extend throughout the entire length of aside 110 and/or through the entire length offirst end 106. In addition, as an alternative, slit 118 may extend thorough twoopposite edges 112 and/or a portion offirst end 116. - In addition, when one of
sides 110 is referred to a first surface ofmandrel 100, andfirst end 106 in referred to as a second surface ofmandrel 100, slit 118 passes through at least a portion of the first surface and at least a portion of the second surface, as shown inFIGS. 1A to 1E . In this case, the first and second surfaces may be connected to each other, as shown inFIGS. 1A to 1E . -
Bottom surface 120 ofslit 118 may extend, for example, in an oblique direction with respect to aside 110 and/orfirst end 106, as shown inFIGS. 1A to 1E .Bottom surface 120 may be smooth and/or curved, as shown inFIGS. 1A to 1E , straight, or zig-zag (e.g., stepped). - Although not shown in the drawings, in an exemplary embodiment of the present invention, slit 118 is a partial or full penetration groove or channel that extends in a portion of
body 102 ofmandrel head 101, penetrating at least one ofsides 110 but notfirst end 106. In other words, slit 118 may for example partially or fully penetratebody 102 but not penetrate first end 106 (e.g., it does not come out of first end 106). In this case, slit 118 may be an opening in one or more ofsides 110, and may look, for example, similar toslit 118 inFIG. 1A , butfirst end 106 would be closed (e.g., full section) sinceslit 118 would not penetratefirst end 106. -
Slit 118 may also have a 90° step or a “V”-shapedbottom end 120, whether extending (e.g., penetrating) throughfirst end 106 or not. - Referring to
FIGS. 1A to 1E , slit 118 may be disposed at a central portion (or middle portion) ofedge 114. However, slit 118 may be disposed at any point alongedge 114, including a corner formed between a pair of neighboringsides 110 and thefirst end 106. - In addition, a depth of
slit 118 may be substantially perpendicularly with respect toside 110 and/orfirst end 106, as shown inFIGS. 1A to 1E . In addition, the alignment (e.g., extending direction) ofslit 118 along the surface ofside 110 may be substantially parallel to the extending direction of thebody 102, or substantially parallel toedges 112, as shown inFIGS. 1A to 1E . However, the present invention is not limited thereto. - When winding a plurality of adjoining loops of wire on mandrel, a saw or other cutting instrument may be guided by
slit 118, and may be inserted intoslit 118 to cut the adjoining loops into individual rings. Thus, openings resulting in the rings from the cutting process may have corresponding locations along the perimeter of each of the rings. In addition, since the wound wire is cut while disposed on themandrel 100, the resulting rings may be substantially uniform. - In addition, since
slit 118 is disposed withinbody 102, the rings can be expeditiously cut while supported on thebody 102. Accordingly, the use ofslit 118 may increase accuracy, consistency and throughput of production (e.g., of making jewelry or other objects). - It is clear that the use of
slit 118 substantially reduces the undesirable effects of a hand snipping tool, which may cut different rings at different locations along their perimeters, or damage the rings when the wound wire is not resting on a supporting surface. Theuse mandrel 100 includingslit 118 eliminates the need for an additional tool with a supporting surface to support the wound wire while cutting it because the wound wire can be cut onmandrel 100. - In an exemplary embodiment of the present invention,
mandrel 100 may include a plurality ofslits 118. -
FIG. 2 is a perspective view illustrating amandrel 200 according to an exemplary embodiment of the present invention. -
Mandrel 200 may include abody 202, abase 204, afirst end 206, asecond end 208, a plurality ofsides 210, a plurality ofedges 212, a plurality ofedges 214, a plurality ofholes 216, and aslit 218 with abottom surface 220. -
Mandrel 200 may be configured to be detachably coupled withhandle 150, as described above in connection withmandrel 100. - Referring to
FIG. 2 ,mandrel 200 includes a polygonal prism (e.g., a square prism) body, and a plurality ofbeveled edges 212. Thus,mandrel 200 may be used to form square loops or rings with beveled edges. - As shown in
FIG. 2 ,mandrel 200 may include a plurality ofholes 216 onfirst end 206. - Other elements of
mandrel 200 may assumed to be similar to their corresponding counterparts described above. Thus, a detailed description thereof will be omitted for brevity. -
FIG. 3 is a perspective view illustrating amandrel 300 according to an exemplary embodiment of the present invention. -
Mandrel 300 may include abody 302 including anexterior surface 322, abase 304, afirst end 306, asecond end 308, anedge 314, at least onehole 316, and aslit 318 with abottom surface 320. -
Mandrel 300 may be configured to be detachably coupled withhandle 150, as described above in connection withmandrel 100. - Referring to
FIG. 3 ,body 302 may include a cylindrical portion with acylindrical surface 322.First end 306 may be circular, as shown inFIG. 3 . Thus,mandrel 300 may be used to form round loops or rings. - As shown in
FIG. 3 , slit 318 may be disposed at any point alongedge 314 and/or the outer perimeter ofcylindrical surface 322. In addition, slit 318 may extend radially with respect tocylindrical surface 322, circularfirst end 306, and/oredge 114. - When
first end 306 is a convex half-sphere,body 302 andfirst end 306 may form a continuous surface withoutedge 314. In this case, slit 318 may extend throughbody 302 through at least a portion ofcylindrical surface 322, and through the convex half-spherefirst end 306. In this case, the alignment (e.g., direction of depth and direction in which slit 318 extends), may be the same as previously described. Similarly, whenfirst end 306 is a concave half-sphere, and slit 318 may extend through at least a portion ofcylindrical surface 322, and through the concave half-spherefirst end 306. It is understood thatfirst end 306 may have various shapes, and that slit 318 may extend through at least a portion ofcylindrical surface 322, and through thefirst end 306, regardless of its shape. - In an exemplary embodiment of the present invention,
edge 314 may be rounded to form a continuous surface betweenbody 302 andfirst end 306. In an exemplary embodiment of the present invention,edge 314 may be beveled. - In addition, in an exemplary embodiment of the present invention where
slit 318 does not penetratefirst end 306, slit 318 may be a groove or slit having an opening incylindrical surface 322. In this case, slit 318 may be a partial penetration groove or slit, or a full penetration groove or slit passing through, for example, diametrically opposite ends ofbody 302. - Other elements of
mandrel 300 may assumed to be similar to their corresponding counterparts described above. Thus, a detailed description thereof will be omitted for brevity. -
FIG. 4 is a perspective view illustrating amandrel 400 according to an exemplary embodiment of the present invention. -
Mandrel 400 may include abody 402 including anexterior surface 422, abase 404, afirst end 406, asecond end 408, anedge 414, a plurality ofholes 416, and aslit 418 with abottom surface 420. -
Mandrel 400 may be configured to be detachably coupled withhandle 150, as described above in connection withmandrel 100. - Referring to
FIG. 4 ,body 402 may include an elliptic cylinder, and may include an ellipticcylindrical surface 422.First end 406 may be elliptic, as shown inFIG. 4 . Thus,mandrel 400 may be used to form elliptical loops or rings. - Referring to
FIG. 4 , slit 418 may be disposed (or extend) along the major axis ofelliptic cylinder body 402 andfirst end 406. However, it is understood thatslit 418 may be disposed at any point along the exterior perimeter of ellipticcylindrical surface 422,edge 414, and/or ellipticfirst end 406. In an exemplary embodiment of the present invention, slit 418 is disposed (or extends) along the minor axis of the exterior perimeter of ellipticcylindrical surface 422,edge 414, and/or ellipticfirst end 406. - When
first end 406 is a convex half-ellipsoid,body 402 andfirst end 406 may form a continuous surface withoutedge 414. In this case, slit 418 may extend throughbody 402 through at least a portion of ellipticcylindrical surface 422, and through the convex half-ellipsoidfirst end 406. In this case, the alignment (e.g., direction of depth and direction in which slit 418 extends), may be the same as previously described. - In an exemplary embodiment of the present invention,
edge 414 may be rounded to form a continuous surface betweenbody 402 andfirst end 406. In an exemplary embodiment of the present invention,edge 414 may be beveled. - In addition, in an exemplary embodiment of the present invention where
slit 418 does not penetratefirst end 406, slit 418 may be a groove or slit having an opening in ellipticcylindrical surface 422. In this case, slit 418 may be a partial penetration groove or slit, or a full penetration groove or slit passing through, for example, opposite ends ofbody 402. - Other elements of
mandrel 400 may assumed to be similar to their corresponding counterparts described above. Thus, a detailed description thereof will be omitted for brevity. -
FIG. 5 is a perspective view illustrating amandrel 500 according to an exemplary embodiment of the present invention. -
Mandrel 500 may include abody 502, abase 504, afirst end 506, asecond end 508, a plurality ofsides 510, a plurality ofedges 512, a plurality ofedges 514, a plurality ofholes 516, and aslit 518 with a bottom surface 520. -
Mandrel 500 may be configured to be detachably coupled withhandle 150, as described above in connection withmandrel 100. - Referring to
FIG. 5 ,mandrel 200 includes a polygonal prism (e.g., a triangular prism)body 502, and a plurality ofedges 512. Thus,mandrel 500 may be used to form triangular loops or rings. - As shown in
FIG. 5 , ahole 516 may overlapslit 518. -
Edges 512 and/or 514 may be at least partially angular, rounded and/or beveled, as described above with reference toedges FIGS. 1A to 1E . -
Slit 518 may be disposed at a middle of anedge 514, as shown inFIG. 5 , or at any other location along anyedge 514, including a corner formed between twoadjacent sides 510 andfirst end 506. In addition, as described above, slit 518 may be a partially penetrating slit, as shown inFIG. 5 , or slit 518 may fully penetrate throughadjacent surfaces 510, or through anedge 514 and a corner formed between twoadjacent sides 510 andfirst end 506. In addition, in an exemplary embodiment of the present invention, slit 518 does not penetratefirst end 506, and may penetratebody 502 at least partially thorough one ofsides 510 and/or edges 514. - Other elements of
mandrel 500 may assumed to be similar to their corresponding counterparts described above. Thus, a detailed description thereof will be omitted for brevity. - It is understood that according to the present invention, the body of a mandrel may include a polygonal prism shape, or a shape having flat portions in combination with round/curved portions. In addition, although the body of the mandrel illustrated in each of
FIGS. 1A to 1E andFIGS. 2 to 4 is shown to have a full cross-section, it is understood that the body may also be hollow. - Thus, according to the present invention, a plurality of rings of various sizes and/or shapes may be efficiently and uniformly formed by using a mandrel with a slit as described above.
- While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be apparent to those of ordinary skill in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.
Claims (20)
1. A mandrel tool, comprising:
a mandrel head having a body, said body including a first end, a second end opposite to the first end, and an exterior surface extending between the first and second ends; and
a slit extending at least partially through the exterior surface of the body and at least partially through the first end, said slit having a width to accommodate a sharp edge of a cutting instrument;
wherein the slit is adapted and sized to permit said cutting instrument to be inserted therein such that when wire external to and wrapped around the body is cut, the slit serves as a cutting guide to cut said wire.
2. The mandrel of claim 1 , further comprising a starting hole disposed on the body.
3. The mandrel of claim 2 , wherein the hole is a partial penetration hole.
4. The mandrel of claim 1 , wherein the body includes a polygonal prism.
5. The mandrel of claim 4 , wherein the polygonal prism includes a first side forming a first border with the first end of the body and wherein the slit extends through a central portion of the of the first border.
6. The mandrel of claim 4 , wherein the polygonal prism includes a first side forming a first border with the first end of the body;
wherein the slit extends through a first portion of the first border; and
wherein the first portion of the first border is disposed between a central portion of the first border and an end portion of the first border.
7. The mandrel of claim 4 , wherein the polygonal prism includes a first side and a second side adjacent to the first side, wherein the first and second sides form a corner with the first end of the body; and
wherein the slit extends through the corner.
8. The mandrel of claim 1 , wherein the body includes a cylinder.
9. The mandrel of claim 8 , wherein the slit extends radially with respect to the cylinder.
10. The mandrel of claim 1 , wherein the body includes an elliptic cylinder.
11. The mandrel of claim 10 , wherein the slit extends along the major axis of the elliptic cylinder.
12. The mandrel of claim 10 , wherein the slit extends along the minor axis of the elliptic cylinder.
13. The mandrel of claim 1 , further comprising a handle disposed on the second end of the body.
14. The mandrel of claim 1 , wherein at least a portion of a bottom end of the slit is curved.
15. The mandrel of claim 1 , wherein at least a portion of a bottom end of the slit is straight.
16. A mandrel, comprising:
a body including a first surface and a second surface connected to the first surface;
a slit passing through at least a portion of the first surface and at least a portion of the second surface, wherein the at least a portion of the first surface and the at least a portion of the second surface are connected to each other;
wherein, when material external to the body is disposed on the body, the slit is adapted to guide a cutting instrument to cut the material; and
wherein the body is adapted to be coupled with a support member.
17. The mandrel of claim 16 , wherein the at least a portion of the first surface is flat, and wherein the at least a portion of the second surface is flat.
18. The mandrel of claim 17 , wherein a depth of the slit is substantially perpendicular to the at least a portion of the first surface and the at least a portion of the second surface.
19. The mandrel of claim 16 , wherein the at least a portion of the first surface or the at least a portion of the second surface is curved.
20. The mandrel of claim 18 , wherein a depth of the slit is radial to the curved portion of the first or second surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/882,183 US20190231038A1 (en) | 2018-01-29 | 2018-01-29 | Mandrel tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/882,183 US20190231038A1 (en) | 2018-01-29 | 2018-01-29 | Mandrel tool |
Publications (1)
Publication Number | Publication Date |
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US20190231038A1 true US20190231038A1 (en) | 2019-08-01 |
Family
ID=67392681
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US15/882,183 Abandoned US20190231038A1 (en) | 2018-01-29 | 2018-01-29 | Mandrel tool |
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US (1) | US20190231038A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4257159A (en) * | 1978-10-26 | 1981-03-24 | Wingert Louis E | Method for securing wires to screw terminals |
US20090188092A1 (en) * | 2008-01-30 | 2009-07-30 | Teresiak Maciej A | Jewelry Mandrel and Method of Using the Same |
US9032775B2 (en) * | 2013-01-18 | 2015-05-19 | Nikhil Gupta | Mandrel for wrapping of cabochons |
-
2018
- 2018-01-29 US US15/882,183 patent/US20190231038A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4257159A (en) * | 1978-10-26 | 1981-03-24 | Wingert Louis E | Method for securing wires to screw terminals |
US20090188092A1 (en) * | 2008-01-30 | 2009-07-30 | Teresiak Maciej A | Jewelry Mandrel and Method of Using the Same |
US9032775B2 (en) * | 2013-01-18 | 2015-05-19 | Nikhil Gupta | Mandrel for wrapping of cabochons |
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