SK283084B6 - Open clamp for re-using - Google Patents

Abstract

The open clamp for re-using, particularly of a type without tabs, contains clamping strip (11) with mutually overlapping the inner and outer strip parts (11a, 11b), modified to the separable mutual connection, equipped with the corresponding first tits (29, 16) for fastening stroke of the device for fastening of the clamping stripe around the subject, which shall be fastened. On the inner and outer strip parts (11a, 11b) there are made the corresponding second tits (25, 14), separated from the first tits (29, 16) for re-opening mutually pre-connected strip parts (11a, 11b), fixed together by mutual mechanic joint (27, 14'').

Description

Technical field

BACKGROUND OF THE INVENTION The present invention relates to an open reusable clamp, in particular a earless type comprising a clamping band having an overlapping inner and outer band portion adapted to be detachably connected to each other, provided with corresponding first embossments for tightening engagement of the clamping tool around the object it should be clamped.

BACKGROUND OF THE INVENTION

Earless type animals as described in earlier U.S. Pat. No. 4,492,004 of the applicant, which are intended for low-profile applications, have proved to be extremely successful. A modified earless animal is disclosed in earlier U.S. Pat. No. 4,712,278 to the applicant, which provides certain advantages described herein. Since earless animals of the type described in the two aforementioned patents do not provide, in contrast to animals with so-called " With no elastic extents to compensate for tolerances in the outer dimensions of the hoses, these earless clamping structures are designed to conform to the stated standard hose sizes so that the outwardly extending mechanical coupling hook for the overlapping tape portions slips into the opening in the outer tape portion for this purpose, when the clamp is tightened to provide a predetermined tightness of the hose mounted on the nipple or the like.

In order to provide some compensation for tolerances in the diameter of the hose, U.S. Pat. No. 4,987,651 of the Applicant referred to herein to incorporate in the clamping band one or more sections adapted to impart elastic extensibility in the longitudinal direction of the clamping band. In all these prior art solutions, the overstretching of the cordless clamping structures, not only in terms of tightening, but also especially in the re-opening of the clamps, causes mechanical loosening and unclamping of the clamp. This results in a risk of damage to the animal, which may result in a risk of reuse.

SUMMARY OF THE INVENTION

These drawbacks are eliminated by an open reusable clamp, in particular of the earless type, comprising a clamping band having an overlapping inner and outer band portion adapted to be detachably connected to each other, provided with corresponding first indentations for tightening the clamping tool for clamping the clamping band around the object It is intended to be clamped according to the invention, the essence of which is to provide on the inner and outer band portions corresponding second slugs, separated from the first slugs, to reopen the previously interconnected overlapping band portions fixed to each other by a mechanical joint.

According to a further feature of the invention, an additional corrugation is formed on the outer band portion in its region between the first indentation and the second indentation to impart resilient extensibility to said region of the clamping member in its longitudinal direction.

Preferably, the first embossments comprise a stop abutment surface to prevent excessive clamping of the clamp.

According to a further feature of the invention, the first indentations are formed by a corresponding embossed portion of the outer band portion and the inner band portion, wherein the first indentations on the outer band portion and the inner band portion have at least approximately complementary shape when viewed in cross-section through the clamping band. the portions below the first indent when tightening the clamp to an interlocking position. These first indentations of the outer and inner band portions have an approximately semicircular shape in said transverse section and extend in the longitudinal direction of the clamping band, having at least their sides formed integrally with the clamping band, each of the first indentations being defined at least at one end thereof a cut, forming an engagement surface for engaging the tool.

According to a further feature of the invention, the second recesses are formed by a corresponding embossed portion of the outer band portion and the inner band portion having an approximately semicircular cross-sectional clamping band with a engagement surface for engaging the tool at one end of each other. The engagement surfaces for engaging the tool are formed by corresponding transverse cuts, the second overhangs being integral with the clamping band at least on their sides.

According to a further feature of the invention, the outer band portion between its first and second indentations is provided with an elongate opening, the inner band portion being provided between its first and second indentations with a guide hook for insertion into the longitudinal aperture for guiding the inner and outer band portions axially opposite each other.

This additional corrugation is formed in the side strip portions next to said opening.

According to a further feature of the invention, the additional undulation is covered from below by the full band width of the inner band portion.

According to a further feature of the invention, the mechanical joint comprises an embossed support hook disposed between the guide hook and the second tool engagement on the inner band portion, the support hook having a locking portion extending from the inner band portion and extending away from the free end of the inner band portion. the portion is of such a shape that it engages with the transverse edge of the aperture delimited by the notches and embossing the first indentation on the outer band portion.

According to a further feature of the invention, the clamp further comprises members for forming a continuous smooth inner clamping surface, comprising a tongue member in one strip portion and a tongue insertion member in the other strip portion. The tab member insertion member preferably begins in the region of the first step portion on the outer strip portion and extends away from the free end of the outer strip portion, the tab member inserting member comprising a central channel beginning in the first step portion and ending in the second step portion. Alternatively, one of the elements including the tongue member and the tongue insertion member is a cold deformed overhang pressed from the overlapping strip portion inwardly, which overhang forms a tongue insertion member by means of two notches spaced apart and embossed d defining therebetween a channel for receiving a tongue member of the inner band portion or forming a tongue member adapted to be inserted into a fork formation at the end of the inner band portion.

According to a further feature of the invention, the mechanical joint is positioned on the clamping band so as to connect the overlapping band portions when the clamp of a predetermined size is properly tightened around the object to be clamped, said abutment abutment surfaces to prevent overstretching the clamp. by positioning the first indent of the inner and outer band portions so that the stop abutment surface on the first indent of the inner band portion is capable of aligning with the abutment abutment surface of the first indentation for engaging the tool on the outer band portion when the clamp has reached the clamping position said joint becomes effective.

According to a further feature of the invention, the clamp comprises, starting from the free end of the outer band portion, a second indent on the outer band portion, a longitudinal bore and additional ripple, a first indent on the outer band portion, a first stepped portion to which the tab member engages; an inner band portion, a support hook, a guide hook, a first indent of the inner band portion and a tongue member.

The invention overcomes these drawbacks by particularly simple means which allow cheap mass production and easy mounting and dismantling. In the clamp according to the invention, there is no excessive tightening in the circumferential direction of the clamp when tightening or undesirable stresses and deformations in the circumferential direction when the clamp is reopened. The clamp is capable of reusing and automatically compensating for dimensional changes in the direction of the hose diameter, while minimizing stress in the circumferential direction of the clamp, especially during the reopening of the hose clamp. The clamp is easy to handle both for mounting and dismounting, while allowing the clamp to create a completely smooth inner clamping surface without any steps or gaps.

By using corrugations with stiffening grooves of any known type, e.g. However, the Oetiker's ears, however, the corrugations may also be made stiffer, regardless of their narrow width determined by the width of the side tape portions remaining on both sides of the elongate opening. The guide hook, which is provided in the inner band portion between the embossed crimp clamp and the support hook of the mechanical interlock in conjunction with the longitudinal bore and ripple arrangement, forms a clamp that can be easily installed and removed using standard tools such as tongs.

The tightening of the clamps according to the invention is thus possible without any difficulty even in the presence of a relatively high resistance to the required tightening torque.

Although the use of corrugations in the clamping band to impart some resilient extensibility is known in the art, such as from European Patent Specification No. 5,940,567. 450 701 A, German file no. DE-AS 10 91 821 or U.S. Pat. No. 1 705 895, according to the invention, allows the use of corrugations and their location in relation to the tightening recesses and separate release recesses not only to compensate for changes in the external dimensions of the hose, but also to minimize stress in the circumferential direction during dismantling of the fitted clamp.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is explained in more detail below with reference to the accompanying drawings, in which: FIG.

Fig. 1 is a top plan view of a reusable clamp according to the invention, FIG. 2 is a side view of the clamp of FIG. 1, FIG. 3 is a bottom view of the clamp of FIG. 1, FIG. 4 shows a section through the center of the clamp of FIG. 1 taken along line 4-4 and showing the clamp according to the invention in the installed but not yet tightened state, FIG. 5 shows a section similar to FIG. 4, but showing parts in the installed and tightened state, FIG. Fig. 6 is a perspective view of a portion of a clamp according to the invention with a modified step removal arrangement at the free end of the inner strip portion; 7 shows a section along the line Ί-Ί of FIG. 6, FIG. 8 is a section along line 8-8 of FIG. 6, FIG. 9 is a perspective view of the clamping portion of the invention, reversing parts of the modified configuration of FIG. 6 to remove the step at the free end of the inner tape portion; FIG. 10 is a section along line 10-10 of FIG. 9 and FIG. 11 is a cross-sectional view taken along line 11-11 of FIG. 9th

DETAILED DESCRIPTION OF THE INVENTION

The reusable clamp 10 consists of a clamping strip press having an overlapping inner and outer band portions 11a and 11b, adapted to be mechanically coupled to each other by means of a mechanical joint, which will be described later. The outer end portion 12b of the strip is provided with truncated ends 13 with an embossed embossment 14 for releasing the mechanical joint and preferably formed by cold deformation after trimming with both cross-sections. When viewed in cross-section with respect to the longitudinal direction of the clamping strip, the crimp 14 is at least approximately semicircular in shape and is shaped into an inverted groove to resist the longitudinally oriented forces formed integrally with the clamping strip along its sides. Of the two end surfaces 14 'and 14 so formed, the end engagement surface 14 forms a tool engagement surface for the purpose of exerting disassembly forces, as will be described in more detail later. The crimp 14 is a second crimp as defined by the invention and is hereinafter referred to as.

In the outer band portion 11b, a further embossed embossment 16 is formed, referred to in the definition of the invention as the first embossment 16, again preferably formed by cold deformation following both transverse cuts, which also has at least approximately a semicircular shape in cross section transverse to the longitudinal direction of the strip. . Again, the first indentation 16 is integral with its clamping band along its sides so that the inverted groove formation formed therein provides sufficient resistance to the tightening forces oriented in the longitudinal direction of the clamping band. Of the end surfaces 16 ' thus formed and 16 of the embossed first embossment 16, the end surface 16 forms the engagement surface of the tool for applying the tightening forces by the tightening tool. While the first embossment 16 has parallel sides, the emboss 14 may have slightly tapered sides as shown in FIG. 1 to improve the interaction with the outwardly extending support hook 27 of the mechanical connection, as will be explained in more detail later. Between the second indent 14 and the first indent 16, a longitudinal aperture 15 is provided that begins directly adjacent the first indent 16 to communicate with the aperture below the first indent 16 and terminates at a distance from the second indent 14.

The remaining side strip portions 11 'on both sides of the longitudinal opening 15 are provided with means for imparting elastic expansion of the clamping strip in the longitudinal direction, preferably in the form of one or more undulations 17. If desired, these undulations may be provided with reinforcing grooves similar to as shown in, for example, U.S. Pat. It should be understood, however, that other means for imparting elastic extensibility to the clamping band, as described in the aforementioned patents, may be used instead of the preferred undulations 17.

Further away from the free end of the outer band end portion 12b, a tab-like channel member 19 is embossed in the central region of the clamping band, starting at the first step portion 18 and ending at the second step portion 20, the embossed center member 19 for inserting the tab. separated from the remaining side tape portions 11 by one or more longitudinally extending in the longitudinal direction, as more fully described in U.S. Pat. 4 299 012 of the same applicant.

The inner end portion 12a of the strip is provided with a tongue-like member 30 for insertion into the member 19 so as to secure the inner clamping surface without any gaps or steps as described in the latter patent specification. The inner end portion 12a of the tape is thus connected to the tongue-like extension 30 by means of bevelled surfaces 31. To tighten the clamp in cooperation with the embossed first indent 16 of the outer band portion 11b, an embossed cold deformed complementary first depression 29 of the inner end 12a, formed after being cut by a single cross-section, so as to be integral with the clamping strip along the remaining contour. Thus, the embossed first supplemental depression 29 is again at least approximately semicircular in cross section opposite the strip and forms an abutment surface 29 'for engaging a tool for exerting a tightening force by the tightening tool.

The first first indent 29 is followed at a predetermined distance by a pressed guide hook 28, which is formed by an approximately U-shaped cut, which extends to a transverse bending axis about which the guide hook 28 is bent. This section may have any suitable shape, such as a U-shape or a circle portion, and the hook may not be straight but may also be bent as shown in the drawing. In a direction opposite to the free end of the inner end portion 12a of the strip, a cold deformed support hook 27 comprising a nose securing portion 27 'oriented away from the free end of the inner band portion 11a is further pressed away from the guide hook 28 edge 14 '(FIG. 3) in the opening below the second indent 14, which lies closer to the free end of the outer end portion 12b of the strip. This transverse edge 14 'is formed by a transverse cut and subsequent deformation of the second indentation 14 in the outer end portion 12b of the strip. The cold deformed support hook 27 may be of the type as described, for example, in FIG. 9 and 10 of U.S. Pat. No. 4,492,004 of the same applicant.

In the vicinity of the support hook 27, a further overlap 25 of the inner strip portion 11a for releasing the clamp is extruded, again preferably formed by cold deformation and having an approximately semicircular shape in cross-section transverse to the longitudinal direction of the clamping strip. to increase the resistance to longitudinally directed release forces. In this case, the sides of the recess are tapered towards the free end of the inner end portion 12a of the strip. Within the region of the first embossed second embossment 14, the sides of the outer end portion 12b of the strip are slightly concave, as a result of the cold deformation of the embossed second embossment 14.

The clamping strip of the invention, when viewed from the outer end portion 12b of the strip to the inner end portion 12a of the strip, comprises the following portions. The extruded second indent 14 of the outer band portion 11b is followed by a longitudinal aperture 15 with the remaining side portions 11 'provided with one or more undulations 17. Directly adjacent the end of the longitudinal aperture 15 facing away from the free end of the outer end portion 12b of the band portion 11b, followed by a spaced channel member 19 at some distance, beginning with the first step portion 18 and ending with the second step portion 20. Next, the second embossing 25 of the inner band portion 11a is pressed to engage the clamp release tool. followed by a support hook 27 and a guide hook 28, followed by an embossed first depression 29 of the inner band portion 11a. The tongue member 30 terminates the inner end portion 12a of the strip.

The embossed first depressions 16 and 29, which form the clamping means by their substantially transverse cuts 16 and 29 ', have a complementary cross-sectional shape such that the first depression 29 of the inner band portion 11a can slide below the first depression 16 of the outer band portion 11b when the clamp is tightened, wherein the width of the first indent 29 of the inner band portion 11a is less than the width of the elongate aperture 15 to allow the indent 29 of the inner band portion 11a to pass through the longitudinal aperture 15. with their engagement surfaces 14 and 25 'for engaging the tool, release means for re-opening the clamp. The abutment hook 27 in conjunction with the transverse edge 14 'formed by the opening below the second indent 14 of the outer band portion 11b forms a mechanical connection, the protruding nose locking portion 27' being adapted to slide over the outer surface of the outer end portion 12b of the band to secure overlapping portions strip in installed state. The guide hook 28, in cooperation with the longitudinal opening 15, forms a guide means for guiding the inner and outer end portions of the strip in the axial direction during the relative movement of the two strip portions.

The clamp according to the invention operates as follows. To tighten the preformed clamp around the hose 40 mounted around the coupling, it is only necessary to compress the jaws of a standard tool, such as a tongs or flat nose pliers, against the surfaces of the transverse notches 16 and 29 'of the first depressions 16 and 29 for engagement. of the tool until the support hook 27 reaches the opening under the second indent 14 and enters through its nose portion 27 'into the opening and engages behind the transverse edge 14'. In this case, the clamp is designed in such a way that with the opposite hook hooked over the transverse edge 14 ', the clamp is in a fully tightened and installed state for the hose of predetermined standard dimensions. The undulations 17 provide a certain amount of compensation for any variation in the external dimensions of the hose 40 and hence the installed clamp. If it is now desired to reopen the clamp, e.g. j. to disassemble it for subsequent re-use, it only needs to be exerted force to re-engage the engagement surfaces 14 and 25 'of the second indentations 14 and 25 to release the grip similar to that used for tightening until the nose portion 27' of the support hook 27 has released the latches 14 '.

The undulations 17 thereby minimize the risk of excessive stress by the circumferentially directed release force exerted on the embossed depressions 14 and 25 to release the clamp. Thus, the undulations 17 of the invention perform a dual function, i. j. they provide some compensation for variations in the external dimensions of the installed clamp and, due to separate tightening and releasing means formed by the depressions 16, 29, 14 and 25, also prevent excessive clamping of the clamp in its circumferential direction during the clamping. Due to the particular design of the clamp according to the invention, the same tool can be used for both installation and removal of the clamp. Of course, other tools, such as those described in U.S. Pat. Nos. 3,704,034, 4,724,729 and 4,754,668.

Excessive tightening during clamping of the clamp is avoided in that the crimps 16 and 29 in the clamping strip are arranged in their mutually complementary cross-sectional shapes such that the tool engagement surface 29 'is almost flush with the crimping surface 16' of the first crimping surface 16 11a, when the crimp 29 slips under the crimp 16 during tightening, and the like, the support hook 27 is in a position just below the latch 14 ', so that further tightening of the clamp becomes impossible due to the jaw of the tightening tool being closed with a tool engagement surface 29 ', for a tool engagement surface 16'.

The invention provides a number of different advantages. It brings considerable space savings as it can be built to ensure a low profile. No special tools are required to tighten and reopen the clamp. Due to the cold deformed embossed embossments, i. j. High-tensile stresses can be applied, large tightening forces can be applied, and then great opening forces again.

The earless animal of the invention can be reused multiple times and is particularly user-friendly and can be conveniently installed and released since the tightening and releasing means are completely separate from one another. An inverted groove-like structure used in the animal of the invention and which may be similar to the prior art U.S. Pat. No. 4,492,004 of the same applicant, further supports these features. In addition, the clamp is extremely simple, easy to manufacture, and uses resilient extending means to compensate for both variations in the outer dimensions of the clamp installed and to minimize the risk of overstretching in the circumferential direction during use of the release forces.

The various embossed embossments as well as the hooks which have been shown in the preferred embodiment as cold drawn parts can also be varied in a manner known to those skilled in the art. To achieve an internal clamping surface without gaps and steps, the central tab-like member 19 may be replaced by an opening beginning in the region of the stepped portions 18, as described in more detail in U.S. Pat. 4,315,348 of the same applicant. In addition, the tongue member 30 in conjunction with the tongue-shaped member 19 for inserting the tongue member is a preferred embodiment for achieving an inner clamping surface without steps or gaps, and the presence of a step formed by the free end of the inner tape can also be avoided. No. 4,237,584 of the same applicant who proposes in FIG. 1 to 6 use of a fork-shaped formation at one end of the strip to insert an extension of the complementary shape at the other end of the strip.

When these principles are applied to a one-piece clamp, the latter patent proposal in FIG. 7 to 10, to provide a suitable fork-shaped formation in the strip portion that overlaps the end of the second strip portion by providing two inwardly embossed protrusions spaced apart from one another to accommodate a tab-like inner strip member in the space formed therebetween. section. The application of these principles to the animal of the invention is illustrated in FIG. 6 to 8 of this document, wherein the tongue member 30 at the inner end portion 12a of the strip is adapted to be inserted into a fork-shaped formation 41 and formed by two inwardly embossed projections 42 and 42 'formed by cold deep drawing deformation in the overlapping outer tape of the portion 11b, as a result of which the embossed embossments 42 and 42 'gradually re-pass to the full bandwidth of the outer tape portion so that the maximum length of the tongue member 30 can be accommodated.

Fig. 9 to 11 show the reversal of part of FIG. 6-8 such that the inner band end portion 12a is now provided with an open fork formation 141 formed by two fork arms 142, 142 'for inserting the tongue member 130 into the channel 143 formed between the fork arms, wherein the tongue member 130 is extruded by cold deformation by pulling) from a suitable central region of the overlapping outer band portion 11b and the tongue member 130 again successively passes to the full bandwidth of the outer band portion. The dimensions of the embossed protrusions 42, 42 'and the embossment of the tongue member 130 are selected to correspond at least approximately to the thickness of the clamping band and are complementary to the corresponding width of the tongue member 30 and the channel 143, the position of the portions in FIG. 6 and 8, the undulations 17 are again covered with the full band width of the inner tape portion 11a.

While several specific embodiments of the invention have been shown and described, it is to be understood that the invention is not limited to these embodiments, but that it may be subject to a number of changes and variations, as is known to those skilled in the art. The invention is therefore not limited to the details shown and described, but covers all such changes and variations within the scope of the claims.

Claims (15)

PATENT CLAIMS An open reusable clamp, in particular of the earless type, comprising a clamping band (11) having an overlapping inner and outer band portion (11a, 11b), adapted to be detachably connected to each other, provided with corresponding first indentations (29, 16) for a tightening engagement of the tool for tightening the clamping band around the object to be clamped therein, characterized in that corresponding second overcuts (25, 14) are formed on the inner and outer band portions (11a, 11b), separated from the first overcuts (29, 11, 11); 16), for reopening the previously interconnected overlapping band portions (11a, 11b) secured to each other by a mechanical joint (27, 14 "'). An open reusable clamp according to claim 1, characterized in that an additional undulation (17) is provided on the outer strip portion (11b) in its region between the first indentation (16) and the second indentation (14), to impart elastic extensibility. said region of the clamping means in its longitudinal direction. The open reusable clamp according to claim 1 or 2, characterized in that the first depressions (29, 16) comprise a stop abutment surface (29 ', 16') to prevent excessive clamping of the clamp. The open reusable clamp according to any one of claims 1 to 3, characterized in that the first embossments (29, 16) are formed by correspondingly printed sections of the outer band portion and the inner band portion, wherein the first embossments (16, 29) the outer band portion (11b) and the inner band portion (11a) have at least approximately complementary shape when viewed in cross-section through the clamping band (11) for sliding the notch (29) on the inner band portion (11a) below the first notch (16) at tightening the clamp to an interlocking position. An open reusable clamp according to claim 4, characterized in that the first slugs (29, 16) of the outer and inner strip portions (11b, 11a) are approximately semicircular in cross-section and extend in the longitudinal direction of the clamping strip (11). ), having at least their sides formed integrally with the clamping band (11), each of the first depressions (16, 29) being defined at least at one end thereof by a substantially transverse cut (16 ", 29 ') forming an engagement surface for engagement tool. An open reusable clamp according to any one of claims 1 to 5, characterized in that the second indentations (25, 14) are formed by a corresponding embossed section of the outer band portion (11b) and the inner band portion (11a) having an approximately semicircular shape v a cross-section of the clamping band, with an engagement surface (25 ', 14 ") for engaging a tool at one end of each of the other recesses (25, 14). An open reusable clamp according to claim 6, characterized in that the engagement surfaces (25 ', 14 ") of the tool engagement are formed by corresponding transverse cuts, the second depressions (25, 14) being integral with the clamping band (11). at least on their sides. An open reusable clamp according to any one of claims 1 to 7, characterized in that the outer band portion (11b) is provided between its first and second indentations (16, 14) with a longitudinal bore (15), the inner band portion (1). 1a) is provided between its first and second indentations (29, 25) with a guide hook (28) for insertion into the longitudinal opening (15) for guiding the inner and outer band portions (11a, 11b) axially opposite each other. An open reusable clamp according to claim 8, characterized in that the additional corrugations (17) are formed in the side strip portions (11 ', 11') next to the longitudinal opening (15). The open reusable clamp according to any one of claims 2 to 9, characterized in that the additional corrugation (17) is covered from below by the full band width of the inner band portion (11a). An open reusable clamp according to any one of claims 8 to 10, characterized in that the mechanical joint comprises an extruded support hook (27), interposed between the guide hook (28) and the second tool engagement (25) on the inner band portion ( 11a), wherein the support hook (27) has a locking portion (27 ') extending from the inner band portion (11a) and extending away from the free end of the inner band portion (11a), and wherein the locking portion (27') is of a shape, that it engages with the transverse edge (14 "') of the aperture defined by the notches and extruding the first indent (14) on the outer band portion (11b). The open reusable clamp of any one of claims 1 to 11, further comprising members (30, 18, 19, 30, 42, 130, 141, 142, 142 ') to form a continuously smooth inner clamping surface. including a tongue member in one strip portion and a tongue member for receiving the tongue member in the other strip portion. Open reusable clamp according to claim 12, characterized in that the tongue insertion member (19) begins in the region of the first stepped portion (18) on the outer band portion (11b) and extends away from the free end of the outer band portion (11). 11b), wherein the tongue insertion member comprises a central channel beginning in the first step portion (18) and ending in the second step portion (20). An open reusable clamp according to claim 12, characterized in that one of the reed member and the reed member receiving member is formed by a cold deformed depression (42, 42 ', 130) pushed out of the overlapping portion inwards, wherein the overhang forms a tab member for inserting the tab by means of two overlaps (42, 42 ') spaced apart and pressed inwardly, defining therebetween a tab for receiving the tab member (30) of the inner band portion or forming a tab member (130) adapted for insertion into the fork formation (141) at the end of the inner band portion (11a). An open reusable clamp according to any one of claims 1 to 14, characterized in that the clamp comprises, starting from the free end of the outer band portion (11b), a second indent (14) on the outer band portion (11b), a longitudinal bore ( 15) and an additional crimping (17), a first indent (16) on the outer band portion (11b), a first stepped portion (18) adjacent the tab member (19), a second indent (25) of the inner band portion (11); 11a), a support hook (27), a guide hook (28), a first indent (29) of the inner band portion (11a) and a tongue member (30).