US20020104197A1 - Method of making hose clamps with internal clamping surfaces devoid of steps or gaps and products made by such method - Google Patents
Method of making hose clamps with internal clamping surfaces devoid of steps or gaps and products made by such method Download PDFInfo
- Publication number
- US20020104197A1 US20020104197A1 US10/026,715 US2671501A US2002104197A1 US 20020104197 A1 US20020104197 A1 US 20020104197A1 US 2671501 A US2671501 A US 2671501A US 2002104197 A1 US2002104197 A1 US 2002104197A1
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- United States
- Prior art keywords
- clamping band
- clamp
- channel
- clamping
- band
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D63/00—Flexible elongated elements, e.g. straps, for bundling or supporting articles
- B65D63/02—Metallic straps, tapes, or bands; Joints between ends thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/02—Hose-clips
- F16L33/025—Hose-clips tightened by deforming radially extending loops or folds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/02—Hose-clips
- F16L33/035—Hose-clips fixed by means of teeth or hooks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/14—Bale and package ties, hose clamps
- Y10T24/1457—Metal bands
Definitions
- the present invention relates to a method of making hose clamps of the so-called open type in which the internal clamping surfaces are devoid of any gaps or steps and to clamps produced by this method.
- the clamp made according to the manufacturing method of the present invention obviates the potential leakage problem of the prior art U.S. Pat. No.
- the present invention is not limited in its application to clamps of the type illustrated in U.S. Pat. No. 4,750,242.
- the method of this invention involving a deep-drawn channel configuration can also be applied successfully in the manufacture of clamps of the type disclosed in the prior U.S. Pat. Nos. 4,299,012 and 4,237,584 with the surprising result that the aforementioned compromise problem can be dealt with more realistically by avoiding the opening in the step-like portion for the tongue-like extension.
- the present invention provides a disclosure as to the requirements of a clamp of the types mentioned above capable of producing stepless and gap-free clamping forces of the clamp over its entire tolerance range and additionally sets forth the parameters for the particular arrangement of the various parts in the clamping band to optimize clamping band requirements insofar as length of the blank is concerned.
- FIG. 1 is a perspective view of the clamp disclosed in U.S. Pat. No. 4,750,242;
- FIG. 2 is a somewhat schematic view on an enlarged scale and explaining the potential leakage problem with the clamp according to FIG. 1;
- FIG. 3 is a somewhat schematic partial axial elevational view of a clamp made in accordance with the method of the present invention in which the mechanical connection is only schematically indicated and the clamp is in the not-yet-tightened condition of the tightening device;
- FIG. 3 a is a somewhat schematic partial axial view of a clamp made in accordance with the method of the present invention, similar to FIG. 3, but partly in cross section and with the parts thereof, after tightening, in a position corresponding to the minimum diametric dimension of a given tolerance range of the clamp;
- FIG. 4 is a somewhat schematic perspective view of a clamp according to this invention, similar in some respects to the clamp of U.S. Pat. No. 4,299,012, but incorporating a modified arrangement to achieve an internal clamping surface devoid of any gap or step and made in accordance with the method of the present invention;
- FIG. 5 is a somewhat schematic partial plan view on the clamp made in accordance with the method of the present invention, as viewed from the inside thereof and developed in the plane of the drawing for better understanding, which illustrates the position of the various parts of the clamp in accordance with the present invention with the mechanical connection engaged but in the non-tightened condition thereof;
- FIG. 6 is a somewhat schematic partial plan view similar to FIG. 5 and illustrating the position of the various parts of the clamp made in accordance with the method of the present invention in the tightened condition corresponding to maximum diametric dimension of the given tolerance range;
- FIG. 7 is a somewhat schematic partial plan view similar to FIGS. 5 and 6 and illustrating the position of the various parts of the clamp made in accordance with the method of the present invention in the tightened condition corresponding to minimum diametric dimension of the given tolerance range;
- FIG. 8 is a somewhat schematic cross-sectional view taken along line VIII-VIII of FIG. 3 a;
- FIG. 9 is a somewhat schematic cross-sectional view taken along line IX-IX of FIG. 3 a;
- FIG. 10 is a somewhat schematic cross-sectional view taken along line X-X of FIG. 3 a;
- FIG. 11 is a somewhat schematic cross-sectional view taken along line XI-XI of FIG. 3 a ;
- FIG. 12 is a plan view on a portion of a female die for use in the method of this invention to manufacture the clamp of FIGS. 3 - 11 ;
- FIG. 13 is a longitudinal cross-sectional view taken along line XIII-XIII of FIG. 12;
- FIG. 14 is a top plan view on a part of the outer band portion obtained with the die of FIGS. 12 and 13;
- FIG. 15 is a cross-sectional view taken along line XV-XV of FIG. 14;
- FIG. 16 is a top plan view on a portion of a modified embodiment of a female die for the method of manufacture according to this invention of a clamp having a different arrangement to achieve an internal clamping surface devoid of any gap or step;
- FIG. 17 is a partial longitudinal cross-sectional view taken along line XVII-XVII of FIG. 16;
- FIG. 18 is a cross-sectional view taken along line XVIII-XVIII of FIG. 16;
- FIG. 19 is a partial somewhat schematic top plan view on the outer band portion of a clamp obtained with the die of FIGS. 16, 17 and 18 ;
- FIG. 20 is a partial somewhat schematic longitudinal cross-sectional view taken along line XX-XX of FIG. 19;
- FIG. 21 is a somewhat schematic transverse cross-sectional view taken along line XXI-XXI of FIG. 19;
- FIG. 22 is a somewhat schematic transverse cross-sectional view taken along line XXII-XXII of FIG. 19.
- FIG. 1 illustrates a clamp of the prior art as disclosed in U.S. Pat. No. 4,750,242.
- the clamp includes a clamping band 1 with an outer clamping band portion 1 a and an inner clamping band portion 1 b which is provided at the end thereof with a U-shaped opening 4 a defining a substantially U-shaped female profile 4 c .
- the outer band portion 1 a is provided with a so-called boss 5 a which, as disclosed in this patent, merges with its part 5 b in the lateral band portions 5 c of the outer clamping band portion 1 a .
- boss 5 a which, as disclosed in this patent, merges with its part 5 b in the lateral band portions 5 c of the outer clamping band portion 1 a .
- the bottom of the boss 5 a is merged by way of part 5 b thereof in an outward direction with the lateral band parts 5 c that remain at a radial distance corresponding to that of the outer clamping band portion 1 a .
- a pocket-like arrangement 7 is formed thereby which represents a potential leakage place.
- the bottom surface 60 a is thereby at the normally existing radial distance of the clamping surface of the inner band portion 11 b and therewith also of the clamping surface of the ring 11 of the clamp formed by the continuation of the outer band portion 11 a .
- these merging sections 67 may be more or less steep but preferably gradual.
- the inner band portion 11 b terminates at its free end in a pocket which is of substantially U-shaped configuration and is formed by the two fork tines 51 defining a female profile 52 (FIG. 4).
- the merging sections 67 should not be too long in order to regain as quickly as possible the full band width of the outer band portion when the merging sections 67 reach the level of the bottom 60 a of the channel-shaped depression or indentation 60 .
- the length of the merging sections 67 in the longitudinal direction of the clamping band may be dictated, however, by manufacturing limitations. Optimum conditions can thereby be readily determined empirically for a given clamp size, for a given thickness of clamping band and for a given type of clamping band material.
- the novel method according to this invention includes, in addition to possibly other deep-drawing operations determined by the details of the clamp, the steps of (a) forming by deep-drawing in the originally flat blank of the clamping band in what is to become the outer band portion, a channel defined by two side parts extending at substantially right angle to the surface of the clamping band.
- the channel is open at one end and closed at the other and has a dimension in a direction at right angle to the surface of the clamping band corresponding substantially to the thickness of the clamping band, preferably as close to the thickness dimension as possible.
- the channel which is located substantially symmetrically with respect to the center longitudinal plane of the clamping band has a dimension in the transverse direction of the clamping band which is no more than about 65% of the full width of the clamping band so that two lateral band portions exist at the open end of the channel, each extending away from a respective side part, and (b) merging, preferably during the deep-drawing operation, any part of the outer clamping band remaining positionally unaffected by the deep-drawing operation, into the new plane displaced by a distance substantially corresponding to the thickness of the clamping band so that the continuation of the outer clamping band portion now extends again uninterruptedly over the entire band width thereof in the new plane, and a gap-free and stepless internal clamping surface can be obtained.
- steps (a) and (b) may be performed with the use of a two-partite male die of complementary configuration sequentially movable in proper timed relationship relative to one another as known to those skilled in the art but are preferably performed simultaneously by a suitably constructed integral die to minimize stiffening to bending as a result of the deep-drawing deformations.
- the application of the method of this invention to a clamp of the type illustrated in FIGS. 1 and 2 involves the formation of a channel 60 closed at the bottom and open at the top which is obtained by deep-drawing the center area of the clamping band to thereby form the channel in the shape of an indentation or depression and merging, preferably during the by deep-drawing operation, within the intended end area of the channel 60 away from the free end of the outer clamping band portion, the two lateral sections 67 remaining positionally unaffected by the deep-drawing of channel 60 , into the plane of the displaced bottom 60 a of the closed channel so that a full width internal clamping surface is achieved in the continuation 11 of the outer clamping band portion corresponding substantially to the clamping surface of the inner clamping band portion within the area of the U-shaped end portion 51 .
- the depth of the channel 60 should correspond as closely as possible to the thickness of the clamping band to avoid any step whose possibly undesirable consequences depend thereby on the type and the thickness of the hose as well as on the type of the hose material and on the type of the clamping band material and thickness thereof.
- FIG. 4 illustrates the application of this invention to a clamp with a so-called “Oetiker” ear as disclosed in U.S. Pat. No. 4,299,012 and with an arrangement to provide a stepless clamping surface obtained by the method according to the present invention.
- the clamp of FIG. 4 illustrates the application of this invention to a clamp with a so-called “Oetiker” ear as disclosed in U.S. Pat. No. 4,299,012 and with an arrangement to provide a stepless clamping surface obtained by the method according to the present invention.
- a clamping band 11 with overlapping outer and inner clamping band portions 11 a and 11 b includes a tightening device in the form of a plastically deformable ear generally designated by reference numeral 13 consisting of outwardly extending leg portions 14 and 15 interconnected by a bridging portion 16 preferably provided with a reinforcement 17 of any type as known heretofore, and a mechanical connection consisting of a guide hook 31 and of two deep-drawn support hooks 32 extending outwardly from the inner clamping band portion 11 b and adapted to engage in openings 35 in the outer clamping band portion 11 a .
- the present invention is not limited to clamps with the mechanical connection 31 , 32 , 35 shown in FIG. 4 but is also applicable to clamps having a different connection between overlapping band portions as known to those skilled in the art, for example, as shown in U.S. Pat. No. 3,286,314 or in U.S. Pat. No. 4,711,001.
- a welded connection especially spot-welded or laser-beam-welded connection, is also feasible.
- spot-welding should be avoided with galvanized steel because of possible damage to the protective coating in galvanized steel and therefore is preferably used only with stainless steel band material.
- the length 1 of the fork-shaped female profile 52 corresponds at most to the length L of the channel-shaped indentation or depression 60 up to the point where the merging sections 67 start, but is preferably slightly smaller than the distance L to assure unimpaired realization of the minimum radial dimension in the tolerance range of the clamp.
- the width of the female profile 52 formed by the two fork tines 51 of the end of the inner clamping band portion 11 b should be slightly wider than the width of the channel-shaped indentation or depression 60 to permit mutual sliding engagement.
- FIG. 6 In a clamp having a clamping action for a given tolerance range, at least a small overlap only schematically shown in FIG. 6 and designated by reference character o should exist between the channel-shaped indentation or depression 60 and the fork tines 51 as shown in FIG. 6 to assure a clamping action without danger of leakage in the maximum diametric dimension of the given tolerance range of the clamp.
- the amount of overlap o necessary for a problem-free functioning of the clamp in the position of maximum diametric dimension depends on a number of factors and can be readily determined for a clamp of a given size with a given tolerance and made of a given band material with a specified thickness of the band material.
- FIG. 7 in turn illustrates the position of the various parts in the minimum diametric dimension of a given tolerance range of the clamp.
- the location of the channel-shaped depression or indentation 60 in the clamping band does not by itself affect the total length of the blank necessary for a clamp embodying this invention which is controlled by other factors. Leaving aside any consideration of the length of the outer clamping band portion 11 a from the leg portion 14 of the tightening device 13 to the mechanical connection 31 , 32 , 35 which depends on well known factors and which can be optimized to minimize the length of clamping band material in accordance with known practices, it becomes clear that the total length of a blank necessary for a clamp made in accordance with the method of this invention depends primarily on the length of the inner clamping band portion 11 b , and more particularly on the length of necessary overlap to the right of leg portion 15 , as viewed in FIG. 4.
- the gap under the tightening device 13 must be bridged by the full band width of the inner band portion in all clamping portions of the clamp.
- the presence of any part of the fork tines 51 in the area of the gap under the tightening device is to be avoided in such condition.
- the inner band portion is therefore long enough so that the beginning of the female profile formed by the fork tines 51 comes to lie under the full band width of the outer band portion to the right of leg portion 15 when the mechanical connection 31 , 32 , 35 is engaged and before tightening of the clamp occurs.
- the beginning of the female profile start a small distance to the right of the connection of the leg portion 15 with the outer clamping band portion.
- the length of the use of the channel-shaped depression or indentation 60 i.e., the location of the channel-shaped depression or indentation 60 in the outer clamping band portion and the total length of the overlapped inner clamping band portion 11 b can be readily determined by taking into consideration the foregoing criteria including the need for bridging the gap underneath the tightening device by the full band width of the inner band portion 11 b , i.e., by an inner band portion without any female profile.
- FIGS. 8, 9, 10 and 11 are somewhat schematic cross-sectional views of the position of the various parts of a clamp of the type illustrated in FIG. 3 a.
- the width of the channel 60 , on the one hand, and of the lateral parts 61 (FIGS. 4 and 9) remaining positionally unaffected by deep-drawing of the channel 60 should be chosen by taking into consideration the following.
- the width of the lateral parts 61 and of the fork tines 51 should be fairly wide because the clamping pressure is produced at the end of the inner band potion 11 b by the fork tines which are pressed radially inwardly by the overlapping lateral parts 61 .
- the lateral parts 61 and merging sections 67 should be wide enough to absorb the tensional forces for which the clamp is designed without tearing or rupturing.
- the clamping action is produced by the internal clamping surface 60 a of the channel 60 which makes it desirable to make the channel as wide as possible.
- the latter are preferably narrow.
- the actual values assigned to these dimensions depend on the type of the clamp, the clamping band material and its thickness as well as the tensional and clamping forces expected in a given clamp and can be optimized empirically by adopting the aforementioned teachings.
- the width of the clamping surface 60 a of the channel 60 may be from about 35% to about 65% of the width of the clamping band while the width of each fork tine 51 may be from about 32.5% to about 17.5% of the width of the clamping band; preferably the width of the clamping surface 60 a of the depression 60 is from about 40% to about 60% and the width of each fork tine 51 is from about 30% to about 20% of the width of the clamping band.
- FIGS. 12 and 13 illustrate a portion of a female die generally designated by reference numeral 100 which includes a flat portion 101 extending the full width of the clamping band on which is to be supported the part of the blank intended to form the outer band portion 11 a .
- the die 100 includes a cavity 102 having a dimension such that the channel-shaped depression or indentation 60 with the aforementioned dimensions is realized by deep-drawing.
- the cavity 102 leaves on both sides thereof flat lateral surfaces 103 at the level of the flat portion 101 .
- the cavity 102 terminates in a flat portion 105 extending over the entire width of the clamping band and displaced with respect to the surface of portion 101 by a distance substantially corresponding to the thickness of the clamping band whereby the lateral surfaces 103 of the female die merge by way of merging sections 107 with the flat portion 105 .
- the merging sections 107 are designed, bearing in mind what was said with respect to the merging sections 67 and that sharp corners should be avoided in cold-deformed and/or deep-drawn sheet metal parts.
- the male die member (not shown) is of complementary configuration to that of the female part, as known in the art, whereby the flat part 105 is displaced with respect to the flat portion 101 by such an amount that the outer band portion 11 a is displaced by an amount corresponding substantially to the thickness of the clamping band.
- the die 100 may also have a curved configuration as is known in the manufacture of clamps.
- the other parts of the clamp such as tightening device and mechanical connection, are made by conventional means as known in the prior art.
- the U-shaped female profile 50 , the openings 35 and the cuts necessary to enable deformation of the hook-like members 31 , 32 can be realized in the same operation as cutting the blank from the supply of band material. Deformation of a tightening device and of the hook-like members can be realized in the same step as realizing the channel 60 or in a separate step or steps, depending, for instance, on the type of tightening device.
- FIGS. 14 and 15 show a part of the outer clamping band portion obtained with a die of the type illustrated in FIGS. 12 and 13.
- the present invention is not limited to clamps of the type shown in FIGS. 1 - 4 but is applicable equally to other types of clamps that involve overlapping band portions.
- the method according to this invention is equally applicable to clamps with an arrangement of a tongue-like extension at the inner clamping band end as shown in U.S. Pat. Nos. 4,299,012 and 4,237,584 as well as to so-called screw-type clamps as disclosed in FIG. 40 of the U.S. Pat. No. 4,299,012 or in U.S. Pat. No. 4,521,940.
- FIGS. 16 through 18 illustrate somewhat schematically a part of a female die for use with a method according to this invention to manufacture a clamp as disclosed in U.S. Pat. No. 4,299,012. More particularly, the die generally designated by reference numeral 200 in FIGS. 16 through 18 includes a flat portion 201 extending over the entire width which is followed in a direction away from the free end of the outer band portion by two lateral parts 203 displaced with respect to the plane of the part 201 by a dimension substantially corresponding to the thickness of the clamping band. The center area 202 of the die remains in the plane of the clamping band part 201 so that a channel is formed by deep-drawing which is closed at the top and open at the bottom.
- the center part 202 is then gradually merged into the plane of the displaced lateral parts 203 of the die within the area of 207 so that a surface 205 displaced by a distance substantially corresponding to the thickness of the clamping band and extending uninterruptedly over the full width of the clamping band exists again in the continuation of the outer band portion behind the merging section 207 .
- FIGS. 19 through 22 illustrate somewhat schematically a part of the outer clamping band portion of a clamp made by the method according to this invention in which reference numerals of the 200 series which correspond to the reference numerals of FIGS. 15 and 16 are used.
- the inner band portion 211 b terminates in a tongue-like extension 252 as disclosed in U.S. Pat. No. 4,299,012 which is adapted to engage into the channel 260 closed at the top whereby the width of the tongue-like extension 252 is slightly smaller than the width of the channel 260 but preferably as close to the width as acceptable for easy sliding movement in the channel to maximize the area of clamping surface offered by the tongue-like extension ahead of the lateral parts 261 formed during deep-drawing of the channel 260 .
- the merging section 267 into the plane of the lateral parts 261 is concerned.
- the tongue-like extension must not reach a position beyond the merging section 267 when the clamp is in its minimum diametric position of the given tolerance range.
- the male die to be used with the method of this invention is thereby complementary to the female die as disclosed herein, as known to any person skilled in the art. Furthermore, as is also known in the art of deep-drawing and cold-deforming this type of product, sharp angles are to be avoided to avoid unnecessary stresses which can be readily realized by forming curved surfaces with small radii of curvature where desired.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
- Automatic Assembly (AREA)
Abstract
Description
- The present invention relates to a method of making hose clamps of the so-called open type in which the internal clamping surfaces are devoid of any gaps or steps and to clamps produced by this method.
- With the availability of relatively hard and thin plastic hose materials, the step formed at the end of the inner clamping band portion became an ever more likely leakage problem. Additionally, with a tightening device forming a gap under the same, for example, with a so-called “Oetiker” ear, it became important to bridge the gap underneath the tightening device by the full band width of the inner clamping band portion to avoid a leakage problem. The need for higher tightening forces as well as the desirability of utilizing thin clamping band materials for cost reasons contributed to the need for an internal clamping surface devoid of any gap or step.
- The arrangement of a stepless and gap-free internal clamping surface as disclosed in U.S. Pat. No. 4,299,012 to Oetiker provided a practical solution that enjoyed extraordinary commercial success by its use in hundreds of millions of clamps. According to this patent, a tongue-like extension at the end of the inner clamping band portion is adapted to extend through an opening provided in a step-like part of the outer band portion, whereby the step-like part has a height substantially corresponding to the thickness of the clamping band. As explained in my co-pending application Ser. No. 09/689,625, filed on Nov. 13, 2000, now U.S. Pat. No. 6,240,603, substantially all tensional forces are absorbed in such clamps in the outer clamping band portion including the area of the step-like part while the overlapped inner clamping band portion is substantially free of any tensional forces but serves to produce the radial clamping forces in the area of overlap. These clamping forces are produced by a reduction in the diametric dimension of the clamp by the tightening of the outer clamping band portion by means of the tightening device. Thus, within the area of overlap between the outer band portion and the tongue-like extension, the direct clamping action on the surface of the object to be tightened is produced in clamps of the type described in the prior U.S. Pat. No. 4,299,012 by the tongue-like extension alone. It is therefore desirable, on the one hand, to make the tongue-like extension as wide as possible in the transverse direction of the clamping band. On the other hand, to be able to absorb high tensional forces, it is desirable to make the lateral band portions in the step-like part delimiting the opening for the tongue-like extension on both sides thereof as wide as possible. A compromise to accommodate these contradictory requirements thus places some limitations on a designer's freedom in the design of such a clamp, not only as regards physical dimensions in the clamping band, but also as regards clamping band material. A different approach utilizing a tongue-like extension adapted to engage in the opening formed by a fork-like configuration was disclosed in U.S. Pat. No. 4,237,584 to Oetiker. The concept for a stepless arrangement with a fork-like configuration was then adopted in U.S. Pat. No. 4,750,242 to Calmettes et al. in which a U-shaped configuration at the end of the inner clamping band portion is adapted to engage with a so-called boss of a shape complementary to the U-shaped configuration. However, the clamp as disclosed in this last-mentioned patent involves a potential leakage problem. Apart from the fact that the clamp according to this last-mentioned patent is a fixed-size clamp and provides no suggestion of how the arrangement thereof can be used in a clamp with a tolerance range in the diametric dimension, there is no indication in this patent on how to optimize the length of the blank necessary for a clamp embodying the disclosed arrangement.
- Accordingly, it is a primary object of the present invention to provide a method for making open-type clamps which avoids the aforementioned shortcomings and drawbacks and permits a problem-free manufacture of open hose clamps, especially clamps that include a fork-like female profile at the end of the inner clamping band portion adapted to engage with a deep-drawn channel forming a male profile in the outer clamping band portion, whereby the male profile has an external shape in width and depth complementary to the opening in said female profile. The clamp made according to the manufacturing method of the present invention obviates the potential leakage problem of the prior art U.S. Pat. No. 4,750,242 by causing the lateral band parts remaining on both sides of the channel-shaped depression or indentation to merge with the bottom surface of the depression or indentation. The bottom surface of the depression or indentation is thereby at the same radial distance as the internal clamping surfaces of the entire clamp including also the inner clamping surfaces of the inner clamping band portion and of the remainder of the clamping ring and thereby assures a leakage-free arrangement.
- However, the present invention is not limited in its application to clamps of the type illustrated in U.S. Pat. No. 4,750,242. Instead, the method of this invention involving a deep-drawn channel configuration can also be applied successfully in the manufacture of clamps of the type disclosed in the prior U.S. Pat. Nos. 4,299,012 and 4,237,584 with the surprising result that the aforementioned compromise problem can be dealt with more realistically by avoiding the opening in the step-like portion for the tongue-like extension.
- Additionally, the present invention provides a disclosure as to the requirements of a clamp of the types mentioned above capable of producing stepless and gap-free clamping forces of the clamp over its entire tolerance range and additionally sets forth the parameters for the particular arrangement of the various parts in the clamping band to optimize clamping band requirements insofar as length of the blank is concerned.
- These and further objects, features and advantages of the present invention will become more apparent from the following description when taken in conjunction with the accompanying drawing which shows, for purposes of illustration only, several embodiments in accordance with the present invention, and wherein:
- FIG. 1 is a perspective view of the clamp disclosed in U.S. Pat. No. 4,750,242;
- FIG. 2 is a somewhat schematic view on an enlarged scale and explaining the potential leakage problem with the clamp according to FIG. 1;
- FIG. 3 is a somewhat schematic partial axial elevational view of a clamp made in accordance with the method of the present invention in which the mechanical connection is only schematically indicated and the clamp is in the not-yet-tightened condition of the tightening device;
- FIG. 3a is a somewhat schematic partial axial view of a clamp made in accordance with the method of the present invention, similar to FIG. 3, but partly in cross section and with the parts thereof, after tightening, in a position corresponding to the minimum diametric dimension of a given tolerance range of the clamp;
- FIG. 4 is a somewhat schematic perspective view of a clamp according to this invention, similar in some respects to the clamp of U.S. Pat. No. 4,299,012, but incorporating a modified arrangement to achieve an internal clamping surface devoid of any gap or step and made in accordance with the method of the present invention;
- FIG. 5 is a somewhat schematic partial plan view on the clamp made in accordance with the method of the present invention, as viewed from the inside thereof and developed in the plane of the drawing for better understanding, which illustrates the position of the various parts of the clamp in accordance with the present invention with the mechanical connection engaged but in the non-tightened condition thereof;
- FIG. 6 is a somewhat schematic partial plan view similar to FIG. 5 and illustrating the position of the various parts of the clamp made in accordance with the method of the present invention in the tightened condition corresponding to maximum diametric dimension of the given tolerance range;
- FIG. 7 is a somewhat schematic partial plan view similar to FIGS. 5 and 6 and illustrating the position of the various parts of the clamp made in accordance with the method of the present invention in the tightened condition corresponding to minimum diametric dimension of the given tolerance range;
- FIG. 8 is a somewhat schematic cross-sectional view taken along line VIII-VIII of FIG. 3a;
- FIG. 9 is a somewhat schematic cross-sectional view taken along line IX-IX of FIG. 3a;
- FIG. 10 is a somewhat schematic cross-sectional view taken along line X-X of FIG. 3a;
- FIG. 11 is a somewhat schematic cross-sectional view taken along line XI-XI of FIG. 3a;
- FIG. 12 is a plan view on a portion of a female die for use in the method of this invention to manufacture the clamp of FIGS.3-11;
- FIG. 13 is a longitudinal cross-sectional view taken along line XIII-XIII of FIG. 12;
- FIG. 14 is a top plan view on a part of the outer band portion obtained with the die of FIGS. 12 and 13;
- FIG. 15 is a cross-sectional view taken along line XV-XV of FIG. 14;
- FIG. 16 is a top plan view on a portion of a modified embodiment of a female die for the method of manufacture according to this invention of a clamp having a different arrangement to achieve an internal clamping surface devoid of any gap or step;
- FIG. 17 is a partial longitudinal cross-sectional view taken along line XVII-XVII of FIG. 16;
- FIG. 18 is a cross-sectional view taken along line XVIII-XVIII of FIG. 16;
- FIG. 19 is a partial somewhat schematic top plan view on the outer band portion of a clamp obtained with the die of FIGS. 16, 17 and18;
- FIG. 20 is a partial somewhat schematic longitudinal cross-sectional view taken along line XX-XX of FIG. 19;
- FIG. 21 is a somewhat schematic transverse cross-sectional view taken along line XXI-XXI of FIG. 19; and
- FIG. 22 is a somewhat schematic transverse cross-sectional view taken along line XXII-XXII of FIG. 19.
- Referring now to the drawing wherein like reference numerals are used throughout the various views to designate like parts, FIG. 1 illustrates a clamp of the prior art as disclosed in U.S. Pat. No. 4,750,242. The clamp includes a clamping band1 with an outer
clamping band portion 1 a and an innerclamping band portion 1 b which is provided at the end thereof with a U-shaped opening 4 a defining a substantially U-shapedfemale profile 4 c. Theouter band portion 1 a is provided with a so-calledboss 5 a which, as disclosed in this patent, merges with itspart 5 b in thelateral band portions 5 c of the outerclamping band portion 1 a. According to this patent, and as clearly shown in FIG. 6 of this patent, the bottom of theboss 5 a is merged by way ofpart 5 b thereof in an outward direction with thelateral band parts 5 c that remain at a radial distance corresponding to that of the outerclamping band portion 1 a. As schematically shown in FIG. 2 of this application, a pocket-like arrangement 7 is formed thereby which represents a potential leakage place. - According to the present invention, as shown in FIGS. 3 and 3a, this problem is avoided by the method according to this invention of manufacturing such a clamp in which the
lateral parts 61 of the outerclamping band portion 11 a which remain substantially unaffected by the deep-drawing operation on both sides of the deep-drawn channel forming an indentation or depression with a depth substantially equal to the thickness of the clamping band and generally designated byreference numeral 60, merge by way of the mergingsections 67 with thebottom surface 60 a of the channel-shaped indentation ordepression 60. Thebottom surface 60 a is thereby at the normally existing radial distance of the clamping surface of theinner band portion 11 b and therewith also of the clamping surface of thering 11 of the clamp formed by the continuation of theouter band portion 11 a. Depending on the thickness of the clamping band and deformability of the clamping band material, these mergingsections 67 may be more or less steep but preferably gradual. Theinner band portion 11 b terminates at its free end in a pocket which is of substantially U-shaped configuration and is formed by the twofork tines 51 defining a female profile 52 (FIG. 4). The modification realized by the method according to this invention eliminates the pocket 7 of the prior art embodiment of FIGS. 1 and 2 and with it the potential leakage problem. It is also noted that as a general guideline, the mergingsections 67 should not be too long in order to regain as quickly as possible the full band width of the outer band portion when the mergingsections 67 reach the level of the bottom 60 a of the channel-shaped depression orindentation 60. The length of the mergingsections 67 in the longitudinal direction of the clamping band may be dictated, however, by manufacturing limitations. Optimum conditions can thereby be readily determined empirically for a given clamp size, for a given thickness of clamping band and for a given type of clamping band material. - Thus, the novel method according to this invention includes, in addition to possibly other deep-drawing operations determined by the details of the clamp, the steps of (a) forming by deep-drawing in the originally flat blank of the clamping band in what is to become the outer band portion, a channel defined by two side parts extending at substantially right angle to the surface of the clamping band. The channel is open at one end and closed at the other and has a dimension in a direction at right angle to the surface of the clamping band corresponding substantially to the thickness of the clamping band, preferably as close to the thickness dimension as possible. The channel which is located substantially symmetrically with respect to the center longitudinal plane of the clamping band has a dimension in the transverse direction of the clamping band which is no more than about 65% of the full width of the clamping band so that two lateral band portions exist at the open end of the channel, each extending away from a respective side part, and (b) merging, preferably during the deep-drawing operation, any part of the outer clamping band remaining positionally unaffected by the deep-drawing operation, into the new plane displaced by a distance substantially corresponding to the thickness of the clamping band so that the continuation of the outer clamping band portion now extends again uninterruptedly over the entire band width thereof in the new plane, and a gap-free and stepless internal clamping surface can be obtained.
- The steps (a) and (b) may be performed with the use of a two-partite male die of complementary configuration sequentially movable in proper timed relationship relative to one another as known to those skilled in the art but are preferably performed simultaneously by a suitably constructed integral die to minimize stiffening to bending as a result of the deep-drawing deformations.
- The application of the method of this invention to a clamp of the type illustrated in FIGS. 1 and 2 involves the formation of a
channel 60 closed at the bottom and open at the top which is obtained by deep-drawing the center area of the clamping band to thereby form the channel in the shape of an indentation or depression and merging, preferably during the by deep-drawing operation, within the intended end area of thechannel 60 away from the free end of the outer clamping band portion, the twolateral sections 67 remaining positionally unaffected by the deep-drawing ofchannel 60, into the plane of the displaced bottom 60 a of the closed channel so that a full width internal clamping surface is achieved in thecontinuation 11 of the outer clamping band portion corresponding substantially to the clamping surface of the inner clamping band portion within the area of theU-shaped end portion 51. As mentioned before, for optimum performance, the depth of thechannel 60 should correspond as closely as possible to the thickness of the clamping band to avoid any step whose possibly undesirable consequences depend thereby on the type and the thickness of the hose as well as on the type of the hose material and on the type of the clamping band material and thickness thereof. - FIG. 4 illustrates the application of this invention to a clamp with a so-called “Oetiker” ear as disclosed in U.S. Pat. No. 4,299,012 and with an arrangement to provide a stepless clamping surface obtained by the method according to the present invention. The clamp of FIG. 4 includes a clamping
band 11 with overlapping outer and innerclamping band portions reference numeral 13 consisting of outwardly extendingleg portions portion 16 preferably provided with areinforcement 17 of any type as known heretofore, and a mechanical connection consisting of aguide hook 31 and of two deep-drawn support hooks 32 extending outwardly from the innerclamping band portion 11 b and adapted to engage inopenings 35 in the outerclamping band portion 11 a. To achieve an inner clamping band surface devoid of gaps or steps, the clamp of FIG. 4 is provided with a deep-drawnchannel 60 forming a male profile in the outerclamping band portion 11 b, with a U-shaped innerclamping band end 51 forming a female profile and with mergingsection 67 as described in connection with FIGS. 3 and 3a. - Moreover, the present invention is not limited to clamps with the
mechanical connection - Optimization of the length of the clamping band in a clamp of the type shown in FIGS. 3, 3a and 4 can be realized by adopting the following teachings. Turning to FIG. 5, the length 1 of the fork-shaped
female profile 52 corresponds at most to the length L of the channel-shaped indentation ordepression 60 up to the point where the mergingsections 67 start, but is preferably slightly smaller than the distance L to assure unimpaired realization of the minimum radial dimension in the tolerance range of the clamp. The width of thefemale profile 52 formed by the twofork tines 51 of the end of the innerclamping band portion 11 b should be slightly wider than the width of the channel-shaped indentation ordepression 60 to permit mutual sliding engagement. In the position of a clamp illustrated in FIG. 5, which corresponds to the not-yet-tightened condition of a clamp but with the mechanical connection already engaged, leakage would occur as long as a spacing a exists between the end of thepocket 52 at the end of the innerclamping band portion 11 b and the beginning of the channel-shaped depression orindentation 60 because no clamping action would exist within this area. - In a clamp having a clamping action for a given tolerance range, at least a small overlap only schematically shown in FIG. 6 and designated by reference character o should exist between the channel-shaped indentation or
depression 60 and thefork tines 51 as shown in FIG. 6 to assure a clamping action without danger of leakage in the maximum diametric dimension of the given tolerance range of the clamp. The amount of overlap o necessary for a problem-free functioning of the clamp in the position of maximum diametric dimension depends on a number of factors and can be readily determined for a clamp of a given size with a given tolerance and made of a given band material with a specified thickness of the band material. FIG. 7 in turn illustrates the position of the various parts in the minimum diametric dimension of a given tolerance range of the clamp. - The location of the channel-shaped depression or
indentation 60 in the clamping band does not by itself affect the total length of the blank necessary for a clamp embodying this invention which is controlled by other factors. Leaving aside any consideration of the length of the outerclamping band portion 11 a from theleg portion 14 of the tighteningdevice 13 to themechanical connection clamping band portion 11 b, and more particularly on the length of necessary overlap to the right ofleg portion 15, as viewed in FIG. 4. To assure proper operation of the clamp, the gap under the tighteningdevice 13 must be bridged by the full band width of the inner band portion in all clamping portions of the clamp. In other words, the presence of any part of thefork tines 51 in the area of the gap under the tightening device is to be avoided in such condition. As a precaution, the inner band portion is therefore long enough so that the beginning of the female profile formed by thefork tines 51 comes to lie under the full band width of the outer band portion to the right ofleg portion 15 when themechanical connection leg portion 15 with the outer clamping band portion. The length of the use of the channel-shaped depression orindentation 60. The optimum length for a blank necessary to realize a clamp made by the method of this invention, i.e., the location of the channel-shaped depression orindentation 60 in the outer clamping band portion and the total length of the overlapped innerclamping band portion 11 b can be readily determined by taking into consideration the foregoing criteria including the need for bridging the gap underneath the tightening device by the full band width of theinner band portion 11 b, i.e., by an inner band portion without any female profile. - FIGS. 8, 9,10 and 11 are somewhat schematic cross-sectional views of the position of the various parts of a clamp of the type illustrated in FIG. 3a.
- The width of the
channel 60, on the one hand, and of the lateral parts 61 (FIGS. 4 and 9) remaining positionally unaffected by deep-drawing of thechannel 60 should be chosen by taking into consideration the following. The width of thelateral parts 61 and of thefork tines 51 should be fairly wide because the clamping pressure is produced at the end of theinner band potion 11 b by the fork tines which are pressed radially inwardly by the overlappinglateral parts 61. Additionally, thelateral parts 61 and mergingsections 67 should be wide enough to absorb the tensional forces for which the clamp is designed without tearing or rupturing. On the other hand, over a substantial part of the tolerance range of the clamp, the clamping action is produced by theinternal clamping surface 60 a of thechannel 60 which makes it desirable to make the channel as wide as possible. Furthermore, to facilitate the inward merging deformation of thesections 67, the latter are preferably narrow. Thus, the actual values assigned to these dimensions depend on the type of the clamp, the clamping band material and its thickness as well as the tensional and clamping forces expected in a given clamp and can be optimized empirically by adopting the aforementioned teachings. As a general guideline, the width of the clampingsurface 60 a of thechannel 60 may be from about 35% to about 65% of the width of the clamping band while the width of eachfork tine 51 may be from about 32.5% to about 17.5% of the width of the clamping band; preferably the width of the clampingsurface 60 a of thedepression 60 is from about 40% to about 60% and the width of eachfork tine 51 is from about 30% to about 20% of the width of the clamping band. - FIGS. 12 and 13 illustrate a portion of a female die generally designated by
reference numeral 100 which includes aflat portion 101 extending the full width of the clamping band on which is to be supported the part of the blank intended to form theouter band portion 11 a. Thedie 100 includes acavity 102 having a dimension such that the channel-shaped depression orindentation 60 with the aforementioned dimensions is realized by deep-drawing. Thecavity 102 leaves on both sides thereof flatlateral surfaces 103 at the level of theflat portion 101. Thecavity 102 terminates in aflat portion 105 extending over the entire width of the clamping band and displaced with respect to the surface ofportion 101 by a distance substantially corresponding to the thickness of the clamping band whereby the lateral surfaces 103 of the female die merge by way of mergingsections 107 with theflat portion 105. The mergingsections 107 are designed, bearing in mind what was said with respect to the mergingsections 67 and that sharp corners should be avoided in cold-deformed and/or deep-drawn sheet metal parts. The male die member (not shown) is of complementary configuration to that of the female part, as known in the art, whereby theflat part 105 is displaced with respect to theflat portion 101 by such an amount that theouter band portion 11 a is displaced by an amount corresponding substantially to the thickness of the clamping band. Though shown in the plane of the drawing, thedie 100 may also have a curved configuration as is known in the manufacture of clamps. The other parts of the clamp, such as tightening device and mechanical connection, are made by conventional means as known in the prior art. For example, the U-shaped female profile 50, theopenings 35 and the cuts necessary to enable deformation of the hook-like members channel 60 or in a separate step or steps, depending, for instance, on the type of tightening device. - FIGS. 14 and 15 show a part of the outer clamping band portion obtained with a die of the type illustrated in FIGS. 12 and 13.
- However, the present invention is not limited to clamps of the type shown in FIGS.1-4 but is applicable equally to other types of clamps that involve overlapping band portions. For example, the method according to this invention is equally applicable to clamps with an arrangement of a tongue-like extension at the inner clamping band end as shown in U.S. Pat. Nos. 4,299,012 and 4,237,584 as well as to so-called screw-type clamps as disclosed in FIG. 40 of the U.S. Pat. No. 4,299,012 or in U.S. Pat. No. 4,521,940.
- FIGS. 16 through 18 illustrate somewhat schematically a part of a female die for use with a method according to this invention to manufacture a clamp as disclosed in U.S. Pat. No. 4,299,012. More particularly, the die generally designated by
reference numeral 200 in FIGS. 16 through 18 includes aflat portion 201 extending over the entire width which is followed in a direction away from the free end of the outer band portion by twolateral parts 203 displaced with respect to the plane of thepart 201 by a dimension substantially corresponding to the thickness of the clamping band. Thecenter area 202 of the die remains in the plane of theclamping band part 201 so that a channel is formed by deep-drawing which is closed at the top and open at the bottom. Thecenter part 202 is then gradually merged into the plane of the displacedlateral parts 203 of the die within the area of 207 so that asurface 205 displaced by a distance substantially corresponding to the thickness of the clamping band and extending uninterruptedly over the full width of the clamping band exists again in the continuation of the outer band portion behind the mergingsection 207. - What was said above in connection with the female die of FIGS. 12 through 15 is equally applicable to the die of FIGS. 16 through 18.
- FIGS. 19 through 22 illustrate somewhat schematically a part of the outer clamping band portion of a clamp made by the method according to this invention in which reference numerals of the200 series which correspond to the reference numerals of FIGS. 15 and 16 are used. The
inner band portion 211 b terminates in a tongue-like extension 252 as disclosed in U.S. Pat. No. 4,299,012 which is adapted to engage into thechannel 260 closed at the top whereby the width of the tongue-like extension 252 is slightly smaller than the width of thechannel 260 but preferably as close to the width as acceptable for easy sliding movement in the channel to maximize the area of clamping surface offered by the tongue-like extension ahead of thelateral parts 261 formed during deep-drawing of thechannel 260. The same is true insofar as the mergingsection 267 into the plane of thelateral parts 261 is concerned. - What was said in connection with the embodiment of FIGS. 4 through 14 to optimize the length of the blank, i.e., of the length of clamping band needed for the blank, it is only necessary to recall that at least a slight overlap must exist between the
lateral band portions 261 and the tongue-like extension 252 when the clamp is in its position of maximum diametric dimension for the given tolerance range of a nominal clamp size. The length of the channel as also the length of the tongue-like extension 252 must thereby be sufficient to accommodate the full contraction of the “Oetiker” ear, i.e., when the plastically deformed ear reaches its maximum plastic deformation which should correspond substantially to the minimum diametric dimension of the given tolerance range of the nominal clamp size. On the other hand, the tongue-like extension must not reach a position beyond the mergingsection 267 when the clamp is in its minimum diametric position of the given tolerance range. As to the rest, what was said in connection with the embodiment of FIGS. 4 through 15 applies also to the embodiment of FIGS. 16 through 21, especially insofar as thesections - The male die to be used with the method of this invention is thereby complementary to the female die as disclosed herein, as known to any person skilled in the art. Furthermore, as is also known in the art of deep-drawing and cold-deforming this type of product, sharp angles are to be avoided to avoid unnecessary stresses which can be readily realized by forming curved surfaces with small radii of curvature where desired.
- Additionally, as mentioned before, during the cold-deforming and deep-drawing operation in accordance with this invention, other deep-drawing and cold-deformation operations of the clamping band may also take place by the use of suitably constructed dies. Furthermore, any tendency on the part of the clamping band to develop an increase in local stiffening and local resistance to bending can be counteracted by conventional means known in the art, for instance as disclosed in U.S. Pat. No. 4,299,012, which suggests weakening short cuts or cut-outs.
- While I have shown and described only two embodiments in accordance with the present invention, it is understood that the same is not limited thereto but is susceptible of numerous changes and modifications as known to those skilled in the art. I therefore do not wish to be limited to the details shown and described herein but intend to cover all such changes and modifications as are encompassed by the scope of the appended claims.
Claims (28)
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/026,715 US6457212B1 (en) | 2001-02-07 | 2001-12-27 | Method of making hose clamps with internal clamping surfaces devoid of steps or gaps and products made by such method |
PCT/US2002/001227 WO2002063200A1 (en) | 2001-02-07 | 2002-01-31 | Hose clamps with clamping surfaces devoid of gaps |
BR0205799-9A BR0205799A (en) | 2001-02-07 | 2002-01-31 | Hose clamps fitted with space-free gripping surfaces |
MXPA03002203A MXPA03002203A (en) | 2001-02-07 | 2002-01-31 | Hose clamps with clamping surfaces devoid of gaps. |
KR1020037004176A KR100796432B1 (en) | 2001-02-07 | 2002-01-31 | Hose clamps with clamping surfaces devoid of gaps |
CA002421033A CA2421033A1 (en) | 2001-02-07 | 2002-01-31 | Hose clamps with clamping surfaces devoid of gaps |
CNB028025962A CN1289848C (en) | 2001-02-07 | 2002-01-31 | Hose clamps with gap-free clamping surface |
EP02709058A EP1358424A4 (en) | 2001-02-07 | 2002-01-31 | Hose clamps with clamping surfaces devoid of gaps |
JP2002562908A JP4275414B2 (en) | 2001-02-07 | 2002-01-31 | Hose clamp with clamping surface without gap |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US26684901P | 2001-02-07 | 2001-02-07 | |
US10/026,715 US6457212B1 (en) | 2001-02-07 | 2001-12-27 | Method of making hose clamps with internal clamping surfaces devoid of steps or gaps and products made by such method |
Publications (2)
Publication Number | Publication Date |
---|---|
US20020104197A1 true US20020104197A1 (en) | 2002-08-08 |
US6457212B1 US6457212B1 (en) | 2002-10-01 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/026,715 Expired - Fee Related US6457212B1 (en) | 2001-02-07 | 2001-12-27 | Method of making hose clamps with internal clamping surfaces devoid of steps or gaps and products made by such method |
Country Status (9)
Country | Link |
---|---|
US (1) | US6457212B1 (en) |
EP (1) | EP1358424A4 (en) |
JP (1) | JP4275414B2 (en) |
KR (1) | KR100796432B1 (en) |
CN (1) | CN1289848C (en) |
BR (1) | BR0205799A (en) |
CA (1) | CA2421033A1 (en) |
MX (1) | MXPA03002203A (en) |
WO (1) | WO2002063200A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050223526A1 (en) * | 2001-03-26 | 2005-10-13 | Hans Oetiker | Tube clamp |
US8146212B2 (en) * | 2005-06-07 | 2012-04-03 | Band-It-Idex, Inc. | Free end band |
US20130160247A1 (en) * | 2010-06-23 | 2013-06-27 | Etablissements Caillau | Clamp having joggles |
US20160007834A1 (en) * | 2013-02-28 | 2016-01-14 | Olympus Winter & Ibe Gmbh | Endoscope |
WO2017005283A1 (en) * | 2015-07-03 | 2017-01-12 | Oetiker Schweiz Ag | Hose clamp |
CN113928721A (en) * | 2021-09-24 | 2022-01-14 | 中国航发沈阳发动机研究所 | Protecting jacket for blades and comb teeth of aero-engine |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6560823B1 (en) * | 2002-01-15 | 2003-05-13 | Hans Oetiker Ag Maschinen- Und Apparatefabrik | Method for optimizing the length of the blank for an open-type clamp and clamp made with the use of this method |
EP1581763A1 (en) * | 2003-01-07 | 2005-10-05 | Hans Oetiker AG Maschinen- und Apparatefabrik | Retaining clamp |
US20040134041A1 (en) * | 2003-01-14 | 2004-07-15 | Craig, Paul M. | Open hose clamp with plastically deformable ear |
US7024731B2 (en) * | 2003-01-14 | 2006-04-11 | Hans Oetiker A.G Maschinen Und Apparatefabrik | Hose clamp with internal clamping surfaces devoid of gaps, steps or discontinuities |
US20080039727A1 (en) * | 2006-08-08 | 2008-02-14 | Eilaz Babaev | Ablative Cardiac Catheter System |
DE102006057497A1 (en) * | 2006-08-25 | 2008-03-27 | Mündener Gummiwerk Gmbh | - System for re-positioning hose clip on hose end consisting of fixing part permanently fixed to annular hose clip section useful for manifold pressure and water cooling hoses ensures no rotation and axial displacement of hose clip |
US20080282509A1 (en) * | 2007-05-17 | 2008-11-20 | Murray Corporation | Self gauging clamp |
US8356641B2 (en) | 2007-11-02 | 2013-01-22 | Band-It-Idex, Inc. | Stationary band clamping apparatus |
KR101583254B1 (en) | 2007-11-02 | 2016-01-08 | 밴드-잇-아이덱스, 인코포레이티드 | Dual locking band clamp and method of forming the same |
EP2303168A1 (en) | 2008-04-16 | 2011-04-06 | Arbel Medical Ltd. | Cryosurgical instrument with enhanced heat exchange |
US7967814B2 (en) | 2009-02-05 | 2011-06-28 | Icecure Medical Ltd. | Cryoprobe with vibrating mechanism |
WO2010105158A1 (en) | 2009-03-12 | 2010-09-16 | Icecure Medical Ltd. | Combined cryotherapy and brachytherapy device and method |
US7967815B1 (en) | 2010-03-25 | 2011-06-28 | Icecure Medical Ltd. | Cryosurgical instrument with enhanced heat transfer |
US7938822B1 (en) | 2010-05-12 | 2011-05-10 | Icecure Medical Ltd. | Heating and cooling of cryosurgical instrument using a single cryogen |
US8080005B1 (en) | 2010-06-10 | 2011-12-20 | Icecure Medical Ltd. | Closed loop cryosurgical pressure and flow regulated system |
CA2882448C (en) * | 2013-08-14 | 2018-09-18 | Hans Oetiker Ag Maschinen-Und Apparatefabrik | Ear clamp |
CN105587935B (en) | 2015-12-24 | 2017-11-28 | 乐清市东博机电有限公司 | A kind of manufacture method and application method of clip and the clip |
CN107606337A (en) * | 2017-09-04 | 2018-01-19 | 无锡市永兴金属软管有限公司 | A kind of adjustable metal hose |
US11633224B2 (en) | 2020-02-10 | 2023-04-25 | Icecure Medical Ltd. | Cryogen pump |
DE102022108054A1 (en) * | 2022-04-04 | 2023-10-05 | Oetiker Schweiz Ag | BAND CLAMP WITH RIB ON THE INNER SURFACE |
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US4299012A (en) * | 1979-05-08 | 1981-11-10 | Hans Oetiker | Hose clamp |
FR2559856B1 (en) * | 1984-02-17 | 1987-06-19 | Caillau Ets | TIGHTENING COLLAR AND MANUFACTURING METHOD THEREOF |
US4724583A (en) * | 1985-05-23 | 1988-02-16 | Nhk Spring Co., Ltd. | Hose band |
FR2596468B1 (en) * | 1986-03-27 | 1988-07-15 | Caillau Ets | TIGHTENING COLLAR |
US5283931A (en) * | 1992-05-20 | 1994-02-08 | Hans Oetiker Ag Maschinen- Und Apparatefabrik | Reusable earless clamp structure |
US5251360A (en) * | 1992-08-05 | 1993-10-12 | Putz Raymond J | Seal retaining clamping apparatus |
US5333360A (en) * | 1992-10-09 | 1994-08-02 | Hans Oetiker Ag Mashinen- Und Apprate-Fabrik | Expandable clamp structure of the earless type |
US5533235A (en) * | 1994-04-19 | 1996-07-09 | Kanesan Manufacturing Co., Ltd. | Hose clamp device |
-
2001
- 2001-12-27 US US10/026,715 patent/US6457212B1/en not_active Expired - Fee Related
-
2002
- 2002-01-31 WO PCT/US2002/001227 patent/WO2002063200A1/en active Application Filing
- 2002-01-31 BR BR0205799-9A patent/BR0205799A/en not_active Application Discontinuation
- 2002-01-31 JP JP2002562908A patent/JP4275414B2/en not_active Expired - Fee Related
- 2002-01-31 MX MXPA03002203A patent/MXPA03002203A/en active IP Right Grant
- 2002-01-31 CA CA002421033A patent/CA2421033A1/en not_active Abandoned
- 2002-01-31 KR KR1020037004176A patent/KR100796432B1/en not_active IP Right Cessation
- 2002-01-31 EP EP02709058A patent/EP1358424A4/en not_active Withdrawn
- 2002-01-31 CN CNB028025962A patent/CN1289848C/en not_active Expired - Fee Related
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050223526A1 (en) * | 2001-03-26 | 2005-10-13 | Hans Oetiker | Tube clamp |
US7093326B2 (en) * | 2001-03-26 | 2006-08-22 | Hans Oetiker Ag Maschinen- Und Apparatefabrik | Tube clamp |
US8146212B2 (en) * | 2005-06-07 | 2012-04-03 | Band-It-Idex, Inc. | Free end band |
US20130160247A1 (en) * | 2010-06-23 | 2013-06-27 | Etablissements Caillau | Clamp having joggles |
US9212769B2 (en) * | 2010-06-23 | 2015-12-15 | Etablissements Caillau | Clamp having joggles |
US20160007834A1 (en) * | 2013-02-28 | 2016-01-14 | Olympus Winter & Ibe Gmbh | Endoscope |
WO2017005283A1 (en) * | 2015-07-03 | 2017-01-12 | Oetiker Schweiz Ag | Hose clamp |
RU2672547C1 (en) * | 2015-07-03 | 2018-11-15 | Отикер Швайц Аг | Hose clamp |
US10267442B2 (en) | 2015-07-03 | 2019-04-23 | Oetiker Schweiz Ag | Hose clamp |
CN113928721A (en) * | 2021-09-24 | 2022-01-14 | 中国航发沈阳发动机研究所 | Protecting jacket for blades and comb teeth of aero-engine |
Also Published As
Publication number | Publication date |
---|---|
WO2002063200A8 (en) | 2003-08-14 |
KR100796432B1 (en) | 2008-01-21 |
JP4275414B2 (en) | 2009-06-10 |
US6457212B1 (en) | 2002-10-01 |
EP1358424A4 (en) | 2005-12-21 |
CN1289848C (en) | 2006-12-13 |
JP2005503517A (en) | 2005-02-03 |
WO2002063200A1 (en) | 2002-08-15 |
CA2421033A1 (en) | 2002-08-15 |
EP1358424A1 (en) | 2003-11-05 |
CN1509388A (en) | 2004-06-30 |
KR20030093181A (en) | 2003-12-06 |
BR0205799A (en) | 2003-07-22 |
MXPA03002203A (en) | 2003-09-10 |
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