The present disclosure relates to shears serving multiple purposes. In particular, the present disclosure relates to shears having an edge tool suitable for use in combat situations, critical care acute medical use or medical traumas requiring the removal of outerwear in a rapid manner.
Shears are a form of hand-held cutting tool, which are commonly used to cut material, paper, fabric, etc. The shears include a pair of crossing arms or blades that are pivotally mounted. One end of each arm has a shearing edge while the other end typically includes a loop shaped hand grip. The arms are mounted so that the shearing edges face each other inwardly. The pivot forms a fulcrum by which operation of the hand grips leverages the blades to shear the fabric or other materials.
Trauma shears are used to cut away a person's clothing to provide access for medical treatment. This tool is typically strong and durable, and is intended to shear through hems, pockets, layered fabric, straps, thick plackets, etc. Although specialization has led to refinement of a strong design capable of cutting a variety of tough materials, it has also limited the scope of applicability of such shears.
In some cases, for example, the speed of cutting may be more important than the strength of the shearing effect. The repetitive snipping involved in hand shearing can be time consuming. The blades of trauma shears and their strong design may not cut through certain sheet fabrics as quickly as required. The requirement for toughness in some shears may also lead to the use of durable but duller blades, which can be ineffective or inefficient when used to slice fabric. Further, the requirement that the blades of trauma shears be suitable for use adjacent to a person's skin when underneath clothing means that the blade ends are often short or limited beyond the pivot point. This limited length can further increase the time of cutting.
One approach to this problem has been for medical personnel to carry or store multiple types of shears, scissors, or knives. Trauma shears may be used for making an initial cut or cutting through seams and thick layers, while a different slicing or cutting tool might be used for cutting sheets of lighter material. Of course, time is lost while one tool is stored or set aside and the other tool is located and applied to the fabric. Some have attempted to solve such a problem by creating multi-function hand tools as may be seen in U.S. Pat. No. 6,698,049, which is somewhat configured like a modified pocket knife. Even with this approach, medical personnel must still pause from cutting in order to reconfigure the multi-function tool to access a different device.
Beyond a clear application for use in medical trauma or emergency services, as described above, it is contemplated that a device resolving these problems could have beneficial application for a variety of other activities, such as outdoor sports (e.g., fishing, hunting, climbing, skydiving, etc.), upholstery and other textile work, clothing assembly, crafts, etc.
Thus, it would be desirable to have multi-purpose shears capable of quickly slicing sheet fabric as well as snipping through tough fabric. Of course, such a design should be safe and carry a low risk of cutting the user or any possible patient.
The present disclosure describes a pair of multi-purpose trauma shears that include structure that enables rapid and effective cutting, shearing and rending of woven fabric.
In an aspect, multi-purpose shears having a distal end and an opposing proximal end to the user is disclosed. The shears comprise a first elongated member having a first shearing end and a first gripping end opposed to the first shearing end, wherein the first gripping end is configured to be in contact with a user's hand. The shears include a second elongated member with a second shearing end and a second gripping end that is opposed to the second shearing end. The second gripping end is configured to be in contact with the user's hand. The first and second elongated members are coupled to one another by a coupling element at a pivot location. Accordingly, the first and second shearing ends move away from one another about the pivot location in response to the user's hand actuating the first and second gripping ends away from another about the pivot location, and the first and second shearing ends move toward one another about the pivot location in response to the user's hand actuating the first and second gripping ends toward one another about the pivot location. The shears include a bladed tool that is coupled to the first elongated member at a location between the first shearing end and the first gripping end. The bladed tool is configured to have an insertion slot that is generally oriented along an axis, wherein the bladed tool includes a blade within the insertion slot.
a illustrates a side view of multipurpose shears in accordance with an aspect of the present disclosure.
b illustrates a detailed view of the multipurpose shears in accordance with an aspect of the present disclosure.
a and 2b depict aspects of the multipurpose shears in accordance with an aspect of the present disclosure.
a depicts an aspect of the multipurpose shears with a detachably mounted housing in accordance with the present disclosure.
b depicts a proximal view of the housing of the multipurpose shears in accordance with an aspect of the present disclosure.
a depicts a side view of an aspect of the multipurpose shears in accordance with the present disclosure.
b is a detailed view of an end of the multipurpose shears in accordance with an aspect of the present disclosure.
a is a view of an aspect of the multipurpose shears with a pivotable U-shaped housing in accordance with the present disclosure.
b is a view of an aspect of the multipurpose shears with a pivotable U-shaped housing in accordance with the present disclosure.
a is a view of the multipurpose shears with an inwardly pivotable loop section in accordance with the present disclosure.
b is an end view of a partial over-molded loop and detachable U-shape housing in accordance with an aspect of the present disclosure.
The present disclosure is directed to a pair of multi-purpose shears that have an additional structure to enable a rapid, safe, and effective rending of both sheet fabric and tough or layered fabric. By definition the rending of a fabric is, “to tear or be torn violently” (Wordnetweb/Princeton.edu). “To separate into parts with force or sudden violence; to tear asunder” (1913 Webster/www.Dictionary,net). Clearly rending is without regards to measurements, lines and secondary operations, such as sewing or rejoining the pieces of fabric.
In reference to
With initial reference to
Elongated members 10, 20 are mounted together at pivot 30 to shear or snip fabric. Thus, this pivot 30 is located between the first shearing end 11 and the first gripping end 12 of the first member 10, and connects the first member 10 to the second member 20 at a corresponding point between the second shearing end 21 and the second gripping end 22 of the second member 20. Thus, for this embodiment the elongated members 10, 20 are pivotally mounted in an adjacent, complementary, and crossing manner so that the first shearing end 11 of first elongated member 10 is capable of pivoting higher than the second shearing end 21 of the second elongated member 20. Conversely, the first gripping end 12 of the first elongated member 10 is lower than the second gripping end 22 of the second elongated member 20. The shearing edge 11E of the first elongated member 10 is adjacent and opposing the shearing edge 21E of second elongated member 20, In this way, opening the gripping ends 12, 22 relative to each, other opens the shearing ends 11, 21 away from each other in an opposing manner and closing the gripping ends 12, 22 relative to each other closes the shearing ends 11, 21 in an adjacent manner.
For this embodiment, first elongated member 10 may be considered as an upper member, for convention of reference, to the extent that its first shearing end 11 pivots within an upper relative area; conversely, second elongated, member 20 may be considered a lower member as its second shearing end 21 pivots within a lower relative area. However, the present invention should be construed as also encompassing embodiments in which first and second members 10, 20 may rest substantially adjacent to each other when trauma shears are in a fully closed position. Gripping end 12 and gripping end 22 may contact each other in the closed position. Gripping end 12 and 22 may be constructed of a tilled polymer, more specifically a polymer of, but not limited to, polycarbonate, ABS or polypropylene with a fiberglass filler (GF) of 0-15 percent.
The elongated first and second elongated, members 10, 20 may preferably, though not necessarily, be angled obtusely at corresponding points near the pivot 30 to enable operation, of the shears 100 while the second elongated member 20 is proximate to a flat surface, such as a table or the skin of a patient (not shown) for embodiments of shears 100 used as trauma shears. In other words, this allows operation of the shears 100 with the second shearing end 21 of the second elongated member 20 held proximate or against the surface; the second shearing end 21 of lower second elongated member 20 may be slid underneath fabric or clothing while the upper first elongated member 10 is cycled to shear or snip the material or clothing. The second shearing end 21 also has a lift lip 26 that operates in conjunction with the blunt tip 26a that curves upward to lift the clothing to minimize impaling of a patient (
With reference to
As may be seen in
As noted above, the shears 100 of the present invention may be adapted for use with, either the right or the left hand, as may be desired. Such adaptation from a right hand to the left generally involves a shift of asymmetric features to accommodate the thumb and fingers of the left hand.
Another aspect is a generally U-shaped housing 40 positioned on one of gripping ends 12, 22, at the point taming loops 12L or 22L.
The U-shaped housing 40 may be positioned relative to a respective one of the gripping ends 12, 22. so as to orient the insertion slot 46 at an angle ranging anywhere from parallel with the mounting gripping end 12 or 22, with the opening 47 facing in the distal direction, to perpendicular with the mounting gripping end 12 or 22 with the opening 47 facing downwardly. Preferably, though not necessarily, for embodiments of shears 100 used as trauma shears, U-shaped housing 40 is mounted on first gripping end 12 and may be rotated around the longitudinal axis 38 of loop 12L at a desired rotational position from about 0 degrees+/−45 degrees. In another example, the U-shaped housing 40 may be positioned relative to the mounting gripping end 12 or 22 so as to orient the insertion slot 46 at an angle ranging from parallel with the shearing ends 11 or 21 with the opening 47 racing in the proximal direction to perpendicular with the mounting gripping end 12 or 22 with the opening 47 facing upwardly.
b is an end view of the U-shaped housing 40 showing a longitudinal split that defines a loop section 40A and a detachable section 40B. Loop section 40A is an integral part of grip 12, 22. Detachable section 40B allows for access to the blade(s) 45 for replacement. Also shown is a widened percussive surface 39. Detachable section 40B when properly oriented is removably secured to loop section 40A by one or more fasteners.
a and 2b depict shears 100 with the orientation of U-shaped housing 40 reversed so that opening 47 faces distally. In
Previous figures nave shown U-shaped housing 40 integrated into one of first and second loop 12L or 22L. Optionally, as shown, in
Other detachable structures may be appropriate for other embodiments of shears 100. For example, shears 100 shown in
a shows an alternative embodiment in which U-shaped housing 40 is integrated into first bop 12L, but that such first loop 12L is similarly longitudinally split, i.e., into two pieces (not shown), and may be fastened to or removed from corresponding first gripping end 12 of elongated member 10 by member fasteners 19, With first loop 12L, longitudinally split, U-shaped housing 40 is also longitudinally split, so that removal of member fasteners 19 and housing fasteners 49 enables removal of first loop 12L from first gripping end 12 of elongated member 10, and separation of the pieces (not shown) of first loop 12L. Similarly, such a configuration may be adapted for use with, second loop 22L and second gripping end 22.
a shows another embodiment as a pivotable U-shaped housing 1040. The pivotable U-shaped housing 1040 is pivotably connected to the pivotable first gripping end 1012 at a distal point on pivotable first loop 1012L, The pivot assembly 1002 is shown using a hinge pin 1005 and a series of hinge ears 1010 where the hinge ears interleaf with a hinge ear 1011 that is integral with the first gripping end 1012, A releasable latch 1017 secures the pivotable U-shaped housing 1040 at the proximal end of the pivotable first loop 1012L enclosing the pivotable first loop 1012L.
a shows an embodiment for a second loop 1122L with a perpendicular or lateral inwardly or outwardly pivotable loop section 1105, Hinge assembly 1110 may be attached at a distal point or a proximal point on the pivotable second loop 1122L and allows for rotation in either lateral direction from the second loop 1012L. Multipurpose trauma shears 100 may also include the first gripping end 12L as a separate construction attached to the first elongate member 10 including a loop section 40A which is shown in
b is an end view of the U-shaped housing 40 showing a longitudinal split that defines a loop section 40A and a detachable section 40B. Loop section 40A is an integral part of first loop 12L. Detachable section 40B allows for access to the blade(s) 45 for replacement. Detachable section 40B when properly oriented is removably secured to loop section 40A by one or more fasteners 49.
The above examples should be considered to be exemplary embodiments, and are in no way limiting of the present invention. Thus, while the description above refers to particular embodiments, it will be understood that many modifications may be made without departing from the spirit thereof.
This application is a divisional application of co-pending U.S. patent application Ser. No. 13/029,537, filed Feb. 17, 2011 and entitled, “MULTIPURPOSE SHEARS”, which is a continuation-in-part application of then co-pending U.S. patent application Ser. No. 12/138,750, filed Jun. 13, 2008 and entitled “MULTIPURPOSE SHEARS”, whereby U.S. patent application Ser. No. 12/138,750 claims the benefit of priority to U.S. Provisional Patent Application Ser. No. 60/937,220, filed on Jun. 26, 2007, and entitled “TRAUMA SHEARS”, all of which are commonly owned.
Number | Date | Country | |
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60937220 | Jun 2007 | US |
Number | Date | Country | |
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Parent | 13029537 | Feb 2011 | US |
Child | 13570262 | US |
Number | Date | Country | |
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Parent | 12138750 | Jun 2008 | US |
Child | 13029537 | US |