Safety harnesses are often used to reduce the likelihood of a user experiencing a fall, and/or to safely arrest the user in the event of a fall. Such harnesses are often used in combination with one or more of a lanyard, a vertical safety system or ladder climb assist system, a self-retracting lifeline, and other fall-protection equipment.
In broad summary, herein is disclosed a fall-protection safety harness with first and second ventral straps and with a ventral buckle that is at least generally aligned with the sagittal plane of the user. These and other aspects will be apparent from the detailed description below. In no event, however, should this broad summary be construed to limit the claimable subject matter, whether such subject matter is presented in claims in the application as initially filed or in claims that are amended or otherwise presented in prosecution.
Like reference numbers in the various figures indicate like elements. Some elements may be present in identical or equivalent multiples; in such cases only one or more representative elements may be designated by a reference number but it will be understood that such reference numbers apply to all such identical elements. Unless otherwise indicated, all figures and drawings in this document are not to scale and are chosen for the purpose of illustrating different embodiments of the invention. In particular the dimensions of the various components are depicted in illustrative terms only, and no relationship between the dimensions of the various components should be inferred from the drawings, unless so indicated. Although terms such as “first” and “second” may be used in this disclosure, it should be understood that those terms are used in their relative sense only unless otherwise noted. As used herein as a modifier to a property or attribute, the term “generally”, unless otherwise specifically defined, means that the property or attribute would be readily recognizable by a person of ordinary skill but without requiring a high degree of approximation.
The following terminology is defined with respect to a fall-protection safety harness as worn by such a user standing upright. The descriptions of positions, orientations, and so on, of harness components as disclosed herein, including in the claims, are thus with respect to the harness as worn by a user standing upright, unless stated otherwise. However, this terminology is used for clarity of description and does not limit the actual orientation of the harness and components thereof during use in a workplace.
Terms such as vertical, upward and downward, upper, lower, above and below, and like terminology, correspond to conventional directions when the harness is worn by a user who is standing upright. The vertical axis (v) is denoted in various Figures herein. The transverse direction refers to the conventional right-left direction of the user and harness, as indicated by transverse axis (t) in various Figures herein. The term ventral refers to the front side of the user's upper body and to harness portions and components located there; the term dorsal refers to the rear side of the user's upper body and to harness portions and components located there. The dorsal-ventral direction is the direction that extends forward-rearward through the user's body (specifically, through the torso), as indicated by dorsal-ventral axis (d-v) in various Figures herein.
Terms such as inward, unless otherwise specified, denote a direction that is inward toward the user's body along the dorsal-ventral axis; terms such as outward, unless otherwise specified, denote a direction that is outward away from the user's body along the dorsal-ventral axis. Terms such as transversely-inward and transversely-outward are exceptions to this usage; they denote directions respectively toward and away from the sagittal plane of the user's body and of the harness, along the transverse (t) axis.
As used herein, the sagittal plane (sometimes referred to as the mid-sagittal plane) has its conventional meaning as a vertical plane that extends down the transverse centerline of the user's body to symmetrically divide the user's body into left and right portions; the term sagittal also applies to the herein-disclosed harness as worn by such a user in an upright position. A sagittal plane is depicted as item 501 in FIG. 9 of U.S. Patent Application Publication 2015/0165246, which is incorporated by reference herein for this purpose.
Fall-protection safety harnesses, sometimes referred to as full-body safety harnesses, are widely used in circumstances in which workers are at elevated height or are otherwise at risk of falling. A fall-protection safety harness is configured to serve in combination with a fall-protection device or apparatus such as, e.g., a self-retracting lifeline, a horizontal lifeline, a lanyard or the like, to provide fall protection. Thus in ordinary use, at least one such fall-protection device is typically connected to the safety harness, e.g., to a D-ring (or other suitable connection point) borne by the harness. Fall-protection safety harnesses will be distinguished from, for example, general-use items such as backpacks and the like.
As illustrated in generic representation in
The straps of such a harness are often comprised of flat webbing, made of e.g., woven synthetic fabric such as, e.g., polyamide, polyaramid (such as, e.g., Kevlar), ultra-high molecular weight polyethylene (such as, e.g., Dyneema) and the like. Such straps are typically flexible so that they can conform to the surface of a wearer's body, can be passed through one or more of buckles, guides, loops and the like, but typically are not significantly extensible. Such straps are interconnected with each other and are often fitted with various pads (e.g., shoulder pads 4 and waist/hip pad 8) to enhance the comfort of the harness, as well as various buckles, latches, connectors, loops, guides, additional pads such as, e.g., chest pads and/or leg pads, and so on. Such components and exemplary arrangements of such components are described in, for example, U.S. Pat. Nos. 8,959,664, 9,174,073, and 10,137,322, all of which are incorporated by reference in their entirety herein.
A safety harness 1 typically includes first and second (right and left) straps 3 and 2 that extend over the top of the user's shoulders as shown in
On the ventral (front) side of the wearer, shoulder straps 3 and 2 continue generally downward along the wearer's torso as seen in
In many safety harness designs, the first and second shoulder straps 3 and 2, on the rear (dorsal) side of the wearer's torso, will meet, overlap and cross each other at a dorsal crossing point located, e.g., between the shoulder blades. In some embodiments, a dorsal plate 11 and/or a dorsal pad 4 (which may continue upward to serve as a shoulder pad) may be present, as in the exemplary design of
In some embodiments a fall-protection safety harness may or may not include one or more plates (e.g., a dorsal plate as mentioned above) that may be relatively rigid (e.g., made of molded plastic and/or metal) in comparison to other, relatively flexible harness components such as pads and cushions. Although not shown in the Figures herein, in some embodiments a ventral strap 6 and/or 7 (and/or any other strap, e.g., waist strap, leg strap and so on), may be equipped with a strap adjuster that can be used to adjust the length of the strap as desired. Exemplary strap adjusters are described, e.g., in U.S. Pat. No. 8,794,378. The disclosures herein will make it clear that a ventral buckle as disclosed herein is distinguished from a strap adjuster. A harness as disclosed herein will not necessarily require, and in many embodiments will not include, a coupler strap (i.e., a generally horizontal, transversely-extending strap that extends between left and right chest straps of a conventional H-style harness to each other, as exemplified by item 202 of FIG. 1 of U.S. Pat. No. 9,993,048).
Fall-protection safety harnesses have conventionally been of two general types. In one general type of harness, one ventral strap extends from the right shoulder to the right hip of the user, and the other strap extends from the left shoulder to the left hip. Often, such ventral straps descend along the user's torso along a generally vertical, straight path. Such harnesses (which are sometimes referred to as H-style harnesses) conventionally include a coupler strap of the general type mentioned above, that extends generally transversely from one ventral strap to the other ventral strap (i.e., that forms the horizontal crossbar of the “H”). Such harnesses have the advantage that they can be donned relatively easily, e.g., in the general manner of a jacket or vest. That is, the ventral straps of such a harness can be forwardly wrapped around the upper torso, after which the chest-strap coupler is used to establish a connection between the two ventral straps.
A second general type of harness is a so-called crossover-style harness. In such a harness, one ventral strap extends from the right shoulder to the left hip, and the other ventral strap extends from the left shoulder to the right hip. (Here and elsewhere, the term shoulder refers to the general region extending from the transverse edge of the neck to the transversely-outer limit of the deltoid muscle. Similarly, the term hip encompasses the general region from the rectus abdominis muscle to the muscles and tissues laterally overlying the iliac crest). The ventral straps thus cross each other, e.g., in the vicinity of the user's breastbone. Such harnesses can have advantages in redistributing asymmetric forces that may result, e.g., from a heavy tool hanging on a user's hip. Such harnesses can also advantageously position a ventral D-ring near the transverse center of the user's torso (the sagittal plane), which can be particularly advantageous for female users and/or when the harness is used in combination with a vertical safety system, climbing-assist system, or the like. This can be achieved while advantageously having the D-ring directly connected to ventral straps rather than being connected to an above-described coupler strap. However, a crossover-style harness has the disadvantage that the harness cannot be donned like a jacket or vest. Rather, the harness must be pulled downward over the user's head in the general manner of a pullover sweater. This can be cumbersome, particularly for a novice user of the harness, and can lead to a momentarily confusing tangle of straps.
The present design is a pseudo-crossover design which preserves the advantages of both types of harnesses. By definition, a pseudo-crossover design denotes an arrangement in which a first ventral strap 7 of the harness extends from the right shoulder of the user to the right hip of the user, and a second ventral strap 6 of the harness extends from the left shoulder of the user to the left hip of the user, as in an H-style harness. However, each ventral strap does not extend generally straight vertically downward along the user's torso in the usual manner of an H-style harness. Instead, each ventral strap, as it extends downward from the user's shoulder, deviates transversely inwardly (toward the sagittal plane of the user and harness) so that the ventral straps approach each other closely (e.g., within 10 cm) at a ventral buckle 50 in the general manner shown in
In some embodiments, this can be achieved by mounting a first buckle portion 100 on first ventral strap 7, and by mounting a second buckle portion 200 on second ventral strap 6, as shown in
In a pseudo-crossover design, the ventral buckle 50 will be at least generally aligned with the sagittal plane of the user and of the harness, as is evident from
However, in many embodiments, no portion of either first ventral strap 7 or second ventral strap 6 will be aligned with the sagittal plane of the user and harness. In other words, in such embodiments, the ventral straps may be transversely spaced apart from each other, transversely outward from the sagittal plane, so that the sagittal plane will not pass through any portion of either ventral strap, as exemplified by the arrangement depicted in
180 Degree Twist and Fold portions of Ventral Strap
In many embodiments, at least one of the first and second ventral straps 7 and/or 6, and the buckle portion (100 and/or 200) that is mounted on that ventral strap, may be configured so that the ventral strap exhibits a 180 degree twist 18, 19. In some embodiments, twists 18 and/or 19 may form a loop 18 and/or 19 on the ventral strap.
In addition to the 180 degree twist, the upper portion and the lower portion of at least one of the ventral strap 7 and/or 6 comprises a fold portion 26, 27, 28, 29 incl. fold edges 26a, 27a, 28a, 29a (not visible in
A 180 degree twist within the meaning of the present disclosure also includes a 180 degree turn or rotation of the ventral strap where the axis of rotation is generally transverse to the long axis of the ventral strap. This results in the same orientation change as described above for the twist with a rotation axis generally aligned to the long axis of the ventral strap. It is noted that the long axis generally corresponds to the vertical axis (v) as depicted in
The 180 degree twist forms a securing portion on the ventral strap. The securing portion prevents the two layered portions of the ventral strap passing through the vertically-elongated slot from slipping through the vertically-elongate slot. The buckle portion is secured at the ventral strap thereby. The securing portion is depicted in the Figs. with 18, 19.
By a fold portion is meant that the ventral strap is partially folded onto itself such that a portion of the ventral strap and its major surface is brought into close proximity to (often, in contact with) with the same major surface of another portion of the ventral strap. The fold portion is arranged such that the long axis of one portion of the fold and the long axis of the other portion forming the fold portion encloses an angle. Thus, there is no total congruence of the ventral strap portions forming the fold portion. In other words, the ventral strap may be folded around a fold line or fold edge which is angled relative to the long axis of the ventral strap.
Consequently, at least one of the ventral straps 7 and/or 6 undergoes a turn three-times, i.e. two times because of the two fold portions on the upper and lower strap portions and once because of the 180 degree twist or loop.
Thus with reference to exemplary ventral strap 7 as shown in
However, in many embodiments it may be advantageous to configure both of the ventral straps with a 180 degree twist and two fold portions.
The buckle portion that is mounted on the ventral strap is configured to dictate that the 180 degree twist occurs at the buckle portion (as for exemplary 180 degree twists 18 and 19 depicted in
By a slot is meant a through-opening that is elongated so as to have a readily recognizable long axis and that exhibits an elongate length that is at least as great as the lateral (crossweb) width of the strap that is to pass through the slot. Some such slots will be at least generally vertically-elongated, meaning that the long axis of the slot is oriented within plus or minus 20 degrees of the vertical axis of the user and harness. In some embodiments such a slot will be at least substantially vertically-elongated, meaning that the long axis of the slot is oriented within plus or minus 10 degrees of the vertical axis. (The exemplary arrangement of
As illustrated in exemplary manner in
The two layered portions of the ventral strap may exhibit features that are indicative of a 180 degree twist, such that the two layered portions of the ventral strap are in overlapping relation with each other, as exemplified by sections 30, 32 and 34, 36 of ventral strap 7 and 6 as indicated in
In the exemplary arrangement of
In some embodiments, a generally vertically-elongated slot (e.g., slot 106 or 202 of buckle portion 100 or 200) may function in a standalone manner. However, in some embodiments one or more auxiliary slots may be provided in order to enhance the guiding of the ventral straps and in particular to enhance the degree to which the 180 degree twist is compelled to occur at the generally vertically-elongated slot. An exemplary arrangement of this general type is shown in
In some embodiments, a strap routing mechanism 300, 400 may be present only on one side adjacent to the buckle part 100 or 200. In some other embodiments, a strap routing mechanism 300, 400 is present on both sides, i.e. adjacent to both buckle parts 100, 200 as for example shown in
Whatever the specific angle, any such auxiliary slot by definition will be oriented so that the terminal end of the auxiliary slot that is closest to the vertical midpoint of the vertically-elongated slot, will be further away from the vertically-elongated slot than the other, opposing terminal end of the auxiliary slot. (In other words, the distance from the lower end of auxiliary slot 306 to the closest point of vertically-elongated slot 302, is greater than the distance from the upper end of auxiliary slot 306 to the closest point of vertically-elongated slot 302, as is readily apparent from
Although not discussed in detail herein, the other buckle portion may similarly comprise one or more auxiliary slots of similar design to those discussed above. Thus in
In some embodiments, a strap routing mechanism 300 or 400 may be provided in the form of a plate-like item (e.g. made of molded plastic, formed metal, or the like) that is separate from (i.e., not permanently attached to) the buckle portion with which it is used, as evident in
In various embodiments, at least 60, 70, 80, 90, 95, or 98 percent of the elongate length of an auxiliary slot may be positioned transversely outward of all portions of the vertically-elongated slot. By way of a specific example, in the exemplary arrangement of
In conventional design of slots and guides for straps of harnesses, a slot or guide is often chosen to have an elongate length that is only slightly greater than the lateral (crossweb) width of the strap, in order that the strap can fit through the slot. It will be appreciated that a slot as disclosed herein, which serves the specific purpose of guiding a strap through a 180 degree twist, may advantageously be chosen to have an elongate length that is significantly greater than the lateral width of the strap that passes through it. Thus in various embodiments the ratio of the elongate length of an at least generally vertically oriented slot of a buckle portion to the lateral width of the strap that passes through the slot, may be at least 1.2, 1.4, 1.6, 1.8, or 2.0. In further embodiments, this ratio may be at most 4.0, 3.5, 3.0, 2.5, 2.2, or 1.9.
A ventral buckle as disclosed herein will comprise an at least generally vertically-oriented slot as described herein (as well as any optional auxiliary slot that may be used in conjunction with it). All such slots will be configured to have a strap pass through the slot and continue onward. This will be distinguished from a buckle slot that is configured to have a strap pass therethrough so as to attach the strap to the buckle. For example, for some purposes a strap may be attached to a buckle portion by passing an end section of the strap through a slot, turning this end section of the strap back on itself, and then sewing, stitching, or otherwise attaching the strap to itself to form a terminal loop that attaches the strap to the buckle portion. Such attachment will typically be at the factory where the buckle and harness is made; the strap will typically remain attached to the buckle portion at all times. Such a buckle portion will be distinguished from a ventral buckle portion as disclosed herein.
The condition of a 180 degree twist, and in particular a stipulation that the 180 degree twist may occur at a buckle portion, e.g., as dictated by a vertically-elongated slot, is applicable when the harness is fully donned with the buckle portions having been attached to each other to form the ventral buckle, e.g., as shown in
Exemplary buckle designs that may achieve the above-described effects are depicted in
In some embodiments, a first (e.g., female) buckle portion 100 will include a base plate and a cover plate. In various embodiments such plates (and other components associated therewith) may be made of, e.g., a metal such as steel or aluminum. Various mechanical fasteners (e.g., rivets, not shown here) may be used to permanently hold the plates together to form the buckle portion 200. Various through-holes can be provided in the plates to accommodate such fasteners. Buckle portions comprised of first and second plates in this general manner are described in detail in U.S. Provisional Patent Application No. 63/070,628, which is incorporated by reference herein in its entirety.
In some embodiments, a second buckle portion 200 will comprise at least one latch that is pivotably attached to the first buckle portion and that is configured to selectively engage a catch 103 of the first buckle portion 100 to securely lock catch 103 within an interior space (receiving cavity) 211 of second buckle portion 200. In some particular embodiments, the at least one latch may take the form of first and second pivotable latches 212, 214 as visible in
In the illustrated embodiment, pivotable latches 212, 214 are inwardly-biased. In this instance, by inwardly-biased is meant that portions of the latches that will physically contact the catch of the second buckle portion when the latches are in their second, latched position (i.e., “shoulders”, not visible here) are biased inward, toward each other. Such biasing may be achieved e.g., by the use of biasing members 213a, 213b as shown in
Such an arrangement of a second buckle portion 200 comprising pivotable, inwardly-biased latches 212, 214 may be used in combination with a first buckle portion 100 (e.g., a “male” portion) bearing a generally T-shaped catch 103 that extends from a main body 201 and that comprises protruding teeth 104 as shown in
Catch 103 cannot thereafter be removed from receiving cavity 212, 214 (thus the first and second buckle portions cannot be detached from each other) unless latches 212, 214 are manually pivotably moved (rotated) out of the second, latched position, into a first, unlatched position. To accomplish this, a user can use, e.g., the thumb and forefinger to urge manipulation portions (“ears” 114, that are exposed beyond the edges of plates of the buckle portion as shown in
Based on the discussions above it will be appreciated that in some embodiments a latching system as disclosed herein may be automatically latching (e.g., self-latching), meaning that the engaging of the catch of the second buckle portion with the pivotable latches of the first buckle portion can occur automatically upon insertion of the catch into the receiving cavity of the first buckle portion. That is, no manipulation of the pivotable latches by the fingers of the user is required in order to attach the first and second buckle portions to each other to form the ventral buckle.
In contrast, in the depicted embodiment the disengaging of the catch from the pivotable latches to detach the buckle portions from each other requires deliberate manual actuation. That is, a preliminary step of manually pivotably moving the latches to an unlatched position (overcoming the biasing force) must be performed before the catch can be removed from the receiving cavity. Thus in at least some embodiments, the first and second buckle portions can be automatically attached to each other as a consequence of moving the buckle portions toward each other; while, in contrast, a preliminary step of pivotably moving the latches to unlatch them must be manually performed in order to allow the first and second buckle portions to be detached from each other.
Based on the above discussions, it will be evident that when the buckle portions 100 and 200 are separated from each other (e.g., when the harness is not being worn by a user) the biasing force of the biasing members will cause the latches to be held in their second, latched position (although no catch will be present to be secured in the receiving cavity). To don the harness, the upper portions of the harness are wrapped forwardly about the shoulders and the right and left ventral straps are positioned on right and left sides of the upper torso. The first and second buckle portions are then moved transversely inward toward the sagittal plane of the user and toward each other, so that the catch of the second buckle portion enters the receiving cavity of the first buckle portion. The leading edges of the catch will impinge on the latches and will overcome the biasing force and urge the latches to momentarily move to the first, unlatched position to allow the catch to be captured, and the buckle portions attached to each other, as described above. In this capturing process, the latches will automatically return to the second, latched position under the influence of the biasing force.
When the harness is to be removed, the user will manually manipulate the latches to the first, unlatched position as described, and will then move the first and second buckle portions apart generally along a transverse direction of the user and harness.
It will be appreciated that the above-described first buckle portion 100 (and corresponding, complementary second buckle portion 200) is merely exemplary and that such a buckle portion may be configured as desired. Various designs of buckle portions are described in detail, e.g., in U.S. Pat. Nos. 6,668,434, 8,181,319, and 9,993,048, and in U.S. Patent Application Publication 2011/0239413, all of which are incorporated by reference in their entirety herein. In some embodiments a first buckle portion will be of a design in which an opening 219 that is configured to receive a catch of a second buckle portion, is located at an end of the first buckle portion (e.g., as depicted herein in
Whatever the specific design, by definition a ventral buckle as disclosed herein comprises (at least) two buckle portions (e.g., a female portion and a male portion) that are in direct contact with each other and are attached to each other directly, by way of metal components of the buckle portions (e.g., the above-described latches, catches, and so on). Thus, a ventral buckle as disclosed herein does not encompass an arrangement in which two “buckle portions” are attached to each other only by way of one or more flexible straps, webbing (made, e.g., of fabric) or the like. Furthermore, a ventral buckle 50 (and first and second buckle portions thereof) is an item that is configured specifically for use with body-supporting ventral straps of a fall-protection safety harness. Such a buckle will thus be distinguished from, for example, a buckle that may be used with one or more straps that are used to support the weight only of some relatively lightweight ancillary item (e.g., a hard hat, a tool, etc.) rather than being used with one or more harness straps that must take part in supporting the full weight of a user in the event of a user fall.
Whatever the specific design of the latching mechanism, any suitable first buckle portion will exhibit certain features and functionalities; similarly, any suitable second buckle portion will exhibit certain features and functionalities. For example, in many embodiments a second buckle portion 200 will comprise a main body 201 that defines a vertically-elongated slot 202 as described in detail earlier herein. In some embodiments, one or more auxiliary slots may also be present as described earlier herein. In some embodiments, main body 201 may take the form of a single, integral body (e.g., made of a metal such as steel or aluminum). In other embodiments, main body 201 may be provided by first and second metal plates held together by fasteners (e.g. rivets) as evident in the exemplary design shown in
A ventral buckle as disclosed herein will comprise at least one D-ring 500 (with the term D-ring denoting any suitable connecting item, regardless of the exact shape of the item) to which a safety line, lanyard, or the like can be connected. D-ring is a separate component and not fixedly connected directly to the first buckle portion 100 (e.g. by one or more metal connectors) as is evident in the exemplary design of
In some embodiments first and second buckle portions 100 and 200 may be configured so that a vertically-elongated slot 106 of first buckle portion 100 is closely held in a specific orientation with respect to vertically-elongated slot 202 of second buckle portion 200. For example, in some embodiments, when buckle portions 100 and 200 are attached to each other, slot 106 may remain parallel to slot 202, e.g., to within plus or minus 5, 2 or 1 degree, at all times. In other embodiments, the buckle portions may be configured so that some variation in the relative orientation of slots 106 and 202 is allowed or promoted. Such variation may be allowed by, for example, allowing some “play” in the ability of catch 103 to slightly move relative to latches 212, 214 (even while being held securely by the latches). Thus, in various embodiments slot 106 of first buckle portion 100 may be able to pivot at least somewhat with respect to slot 202 of second buckle portion 200, e.g., through an angle of relative rotation of at least 5, 10 or 20 degrees or more. In some embodiments, the slots are unable to rotate relative to each other through an angle of more than 15, 7 or 3 degrees. Any such rotation will be about an axis of rotation that is generally aligned with the dorsal-ventral axis of the harness and buckle and buckle portions. Obviously, since (in the depicted embodiment) arm 108 is pivotably mounted on connector 105 with respect to rotation about a vertical axis as described above, such rotation about the vertical axis may occur to any suitable amount (e.g., up to 90 degrees or more) irrespective of any rotation that may or may not be allowed about a dorsal-ventral axis.
A feature of at least some of the embodiments disclosed herein is that at least when first and second buckle portions 100 and 200 are detached from each other, first buckle portion 100 cannot be slidably moved along first ventral strap 7, and second buckle portion 200 can similarly not be slidably moved along second ventral strap 6. In other words, when buckle portions 100 and 200 are in the general configuration shown in
As noted, in many embodiments first and second buckle portions 100 and 200 and components thereof, may be made of any suitable material. In some embodiments, any such component may be made of any suitable metal, e.g., steel or aluminum. In various embodiments, such a component may be a forged body or a cast body; or, it may be made of sheet metal that is formed (e.g., bent) into the desired shape using standard sheet metal forming techniques.
In some embodiments, some part of a buckle portion (in particular, any areas that are to be regularly contacted by the fingers of a user) may be partially encased in an overmolded organic polymeric resin. Overmolding can be performed, e.g., by taking a previously-formed metal body and inserting it at least partially into an injection-molding cavity so that an organic polymeric molding resin can be formed atop, and adhered to, the desired portions of the body. In some embodiments a plate and/or padding may be provided, e.g., inward of first and/or second buckle portions 100 and/or 200, in order to provide enhanced cushioning between the ventral buckle 50 and the user's chest or torso. Any such plate and/or padding can be of any suitable design, relying, e.g., on one or more layers of foam or other resilient material.
A ventral buckle as disclosed herein (and a pseudo-crossover arrangement of ventral straps) can be used with any suitable fall-protection harness. Such harnesses are well known and may be used with a wide variety of fall-protection apparatus, methods and systems. In some embodiments, the fall-protection harness, and the ventral buckle thereof, may meet the requirements of ANSI Z359.12.
Fall-protection apparatus and systems (e.g., lanyards, self-retracting lifelines, positioning systems, horizontal systems, vertical systems, climb-assist systems, descenders, etc.), fall-protection anchorages, components of such apparatus, systems, equipment, and so on, with which the arrangements disclosed herein may find use, are described, e.g., in the 3M DBI-SALA Fall Protection Full Line Catalog 2018.
It is emphasized that a user of any fall-protection device, apparatus, system, or component thereof that includes a harness and/or ventral buckle as described herein is tasked with carrying out any appropriate steps, actions, precautions, operating procedures, etc., as required by applicable laws, rules, codes, standards, and/or instructions. That is, under no circumstances will the presence of any arrangement disclosed herein relieve a user of the duty to follow all appropriate laws; rules; codes; standards as promulgated by applicable bodies (e.g., ANSI); instructions as provided by the manufacturer of the fall-protection system, apparatus or components; instructions as provided by the entity in charge of a worksite, and so on.
It will be understood that the particular designs of the buckle portions presented herein are exemplary and that variations may be present but which may still allow buckle portions to form a ventral buckle that achieves a pseudo-crossover arrangement of straps. While the buckle portions (and 180 degree twist arrangements) disclosed herein are discussed primarily in the context of being used to form a ventral buckle for use with ventral straps of a fall-protection safety harness, in various embodiments such buckle portions and/or arrangements of straps could be used with other straps of a fall-protection safety harness, with straps of a general-purpose harness, or, with straps for any desired purpose. Such uses may not necessarily involve the interaction of two ventral straps with each other. Nor would the two straps necessarily need to be more or less parallel to each other when the buckle portions are detached from each other (as in
In summary, all such variations and combinations are contemplated as being within the bounds of the conceived invention, not merely those representative designs that were chosen to serve as exemplary illustrations. Thus, the scope of the present invention should not be limited to the specific illustrative structures described herein, but rather extends at least to the structures described by the language of the claims, and the equivalents of those structures. Any of the elements that are positively recited in this specification as alternatives may be explicitly included in the claims or excluded from the claims, in any combination as desired. Any of the elements or combinations of elements that are recited in this specification in open-ended language (e.g., comprise and derivatives thereof), are considered to additionally be recited in closed-ended language (e.g., consist and derivatives thereof) and in partially closed-ended language (e.g., consist essentially, and derivatives thereof). To the extent that there is any conflict or discrepancy between this specification as written and the disclosure in any document that is incorporated by reference herein but to which no priority is claimed, this specification as written will control.
1. A fall-protection safety harness configured so that when the harness is worn by a user, a first ventral strap of the harness extends from the right shoulder of the user to the right hip of the user and a second ventral strap of the harness extends from the left shoulder of the user to the left hip of the user, wherein a first buckle portion is mounted on the first ventral strap and a second buckle portion is mounted on the second ventral strap, the first and second buckle portions being detachably attached to each other to form a ventral buckle,
2. The fall-protection safety harness according to embodiment 1, wherein the 180 degrees twist provide a loop on the ventral strap.
3. The fall protection safety harness according to any one of embodiments 1 or 2, wherein the upper and lower portions of the ventral strap are folded such that a transverse strap portion is formed in which two layered portions of the ventral strap are in a substantially congruent overlap relation.
4. The fall protection safety harness according to embodiment 3, wherein the transverse strap portion faces away from a ventral strap towards the buckle part to which the ventral strap is attached to.
5. The fall protection safety harness according to any one of embodiments 3 or 4, wherein the transverse strap portion provides for an excess length of the ventral strap, wherein the transverse strap portion is oriented substantially perpendicular to the long axis of the ventral strap and to the sagittal plane of the user.
6. The fall protection safety harness according to any one of embodiments 3 to 5, wherein the longitudinal axes of the folded portion and of the transverse strap portions are angled to each other, wherein the axes preferably enclose an angle of between substantially 0 degree to substantially 90 degree.
7. The fall protection safety harness according to one of embodiments 2 to 6, further comprising a strap securing means, wherein the loop is arranged around the strap securing means.
8. The fall protection safety harness according to embodiment 7, wherein the strap securing means is formed by a rod with an elongation larger than the vertically-elongated slot, wherein the loop encompasses the rod.
9. The fall protection safety harness according to embodiment 8, wherein the rod is formed by a portion of the buckle portion being arranged adjacent to the vertically-elongated slot.
10. The fall protection safety harness according to any one of embodiments 8 or 9, wherein the fall protection safety harness further comprises a D-ring and wherein the rod is formed by a portion of the D-ring.
11. The fall protection safety harness according to embodiment 10, wherein the strap passes through the vertically-elongated slot and passes through a slot in a D-ring before returning to the vertically-elongated slot, whereby the D-ring is held in position proximate the buckle portion by the ventral strap and is not directly attached or connected to the first buckle portion of the second buckle portion by way of any metal component.
12. The fall protection safety harness according to any one of embodiments 7 to 11, wherein the securing portion of the ventral strap is formed by a thickened portion of the ventral strap and wherein the strap securing means is formed by the vertically-elongated slot, wherein the thickened portion of the ventral strap is larger in thickness than the width of the vertically-elongated slot, preferably the thickened portion is formed by two or more layered portions of the ventral strap being stitched together.
13. The fall-protection safety harness according to any one of preceding embodiments, wherein the generally vertically-elongated slot is a substantially vertically-elongated slot that is oriented within plus or minus 10 degrees of a vertical axis of the harness; and wherein the buckle portion that comprises the substantially vertically-elongated slot also comprises at least one auxiliary elongate slot that exhibits a long axis that is oriented at an angle of from 15 degrees to substantially 90 degrees relative to the substantially vertically-elongated slot.
14. The fall-protection safety harness according to embodiment 13, wherein the vertically-elongated slot and/or the at least one auxiliary slot are integrally formed with the buckle part.
15. The fall-protection safety harness according to embodiment 13, wherein the vertically-elongated slot and/or the at least one auxiliary slot are attached to the buckle part, wherein preferably the vertically-elongated slot and the at least one auxiliary slot are integrally formed with each other.
16. The fall-protection safety harness according to any one of embodiments 13 to 15, further comprising a strap routing mechanism in which the vertically-elongated slot and at least one auxiliary slot are arranged, wherein the buckle part comprises a vertically-elongated slot, wherein the vertically-elongated slots of the strap routing mechanism and of the buckle part are in an overlap relation such that the ventral strap passes through the vertically-elongated slots of the buckle part and of the strap routing mechanism.
17. The fall protection safety harness according to embodiment 16, wherein the buckle parts comprises metal and wherein the strap routing mechanism comprises a polymeric material.
18. The fall-protection safety harness according to any one of the preceding embodiments, further comprising a connection strap fixedly connected to the upper and the lower portion of the ventral strap such that a load acing upon the upper strap is also transmitted to the lower strap and such that a load acing upon the lower strap is also transmitted to the upper strap.
19. The fall-protection safety harness according to embodiment 18, wherein the connection strap is stitched to the upper and/or lower portion of the ventral strap.
20. The fall-protection safety harness according to any one of embodiments 13 to 19, wherein the fall protection safety harness comprises a connection strap and wherein the connection strap passes through the at least one auxiliary slot.
21. The fall-protection safety harness according to any one of embodiments 3 to 21, wherein the two portions of the transverse strap portion are fixedly connected to each other, preferably by stitching.
22. The fall-protection safety harness according to any one of preceding embodiments, wherein each of the ventral straps comprises at least two fold portions each formed by an upper portion of the ventral strap folded at least partially onto itself and by a lower portion of the ventral strap folded at least partially onto itself,
23. The fall-protection safety harness according to any one of embodiments 7 to 22, wherein a strap securing means is arranged at both ventral straps and buckle parts, respectively.
24. The fall-protection safety harness according to any one of embodiments 16 to 23 wherein a strap routing mechanism is arranged at both ventral straps.
25. The fall-protection safety harness according to any one of the preceding embodiments, wherein the first and second buckle portions are directly attached to each other by way of metal components of the first and second buckle portions and wherein the first and second buckle portions are not directly attached or connected to each other by way of any flexible strap or webbing.
26. The fall-protection safety harness according to any one of the preceding embodiments, wherein the first buckle portion comprises a base plate and a cover plate that are permanently attached to each other by multiple mechanical fasteners, and wherein the base plate and the cover plate of the first buckle portion are configured to define a receiving cavity into which a catch of the second buckle portion can be received in order to attach the first and second buckle portions to each other, and wherein the base plate and the cover plate also define an opening into which the catch of the first buckle portion can be inserted to reach the receiving cavity.
27. The fall-protection safety harness of embodiment 26, wherein the first buckle portion comprises first and second pivotable latches that are pivotably mounted to the base plate and/or to the cover plate and that are pivotably movable between a first, unlatched position that allows the catch of the second buckle portion to exit the receiving cavity of the first buckle portion to detach the first and second buckle portions from each other; and, a second, latched position that securely holds the catch of the second buckle portion within the receiving cavity of the first buckle portion and prevents the catch from being removed from the receiving cavity.
28. The fall-protection safety harness of embodiment 27, wherein the first and second pivotable latches of the first buckle portion are biased by biasing members toward the second, latched position, and wherein the first and second pivotable latches are configured so that the fingers of a user can overcome the biasing force of the biasing members and manually pivot the first and second latches from the second, latched position into the first, unlatched position by manipulating exposed ear portions of the first and second pivotable latches.
29. The fall-protection safety harness of embodiment 28, wherein the first and second pivotable latches of the first buckle portion are configured so that moving the first and second buckle portions toward each other in a transverse direction so that the catch of the second buckle portion enters the receiving cavity of the first buckle portion, causes a leading end of a head of the catch to impinge on contact surfaces of the first and second pivotable latches and overcomes the biasing force of the biasing members so as to urge the first and second pivotable latches to pivotably move to their second, unlatched position.
30. The fall-protection safety harness of embodiment 29, wherein the first and second pivotable latches of the first buckle portion are configured so that sufficient penetration of the catch of the second buckle portion into the receiving cavity of the first buckle portion causes the biasing force exerted by the biasing members to urge the first and second latches to automatically pivotably move into the second, latched position to securely hold the catch within the receiving cavity.
31. The fall-protection harness according to any one of the preceding embodiments, wherein the harness, and the ventral buckle, meet the requirements of ANSI Z359.12.
32. A method of donning the fall-protection safety harness of any of embodiments 1-31, the method comprising wrapping an upper portion of the safety harness about the shoulders and upper torso of the user in the manner of a jacket and then attaching the first and second buckle portions to each other to form the ventral buckle, wherein the method does not require any step of pulling the harness downward over the heat and shoulders of the user in the manner of a pullover sweater.
Filing Document | Filing Date | Country | Kind |
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PCT/IB2022/055212 | 6/3/2022 | WO |
Number | Date | Country | |
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63211076 | Jun 2021 | US |