IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0913804
(2004-08-06)
|
등록번호 |
US-7320486
(2008-01-22)
|
우선권정보 |
DE-103 36 351(2003-08-08) |
발명자
/ 주소 |
- Geppert,Helmut
- Wolf,Heinz Peter
- Mann,Stephan
- Sommer,Michael
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
7 인용 특허 :
2 |
초록
▼
A pipe clamp for connecting two partially insertable pipes has a clamping strap that is placed circumferentially about the spherical end sections of the pipes inserted into one another. The clamping strap has two outwardly projecting clamping jaws provided with a hole through which a clamping screw
A pipe clamp for connecting two partially insertable pipes has a clamping strap that is placed circumferentially about the spherical end sections of the pipes inserted into one another. The clamping strap has two outwardly projecting clamping jaws provided with a hole through which a clamping screw extends. The clamping strap is curved about a transverse axis that is positioned for coaxially inserted pipes in the untightened state of the clamping strap in a central plane of the clamping strap extending perpendicularly to the coaxial center axes of the pipes at a spacing from a center of the spherical end sections of the pipes. The inner radius of the clamping strap in the untightened state is smaller than the outer radius of the spherical end sections such that the sum of the spacing and of the inner radius is greater than the outer radius of the end sections.
대표청구항
▼
What is claimed is: 1. A pipe clamp in combination with a a first pipe and a second pipe and for connecting the first pipe and the second pipe that are partially insertable into one another, wherein the first pipe has an insertion end section and the second pipe has a receiving end section, wherein
What is claimed is: 1. A pipe clamp in combination with a a first pipe and a second pipe and for connecting the first pipe and the second pipe that are partially insertable into one another, wherein the first pipe has an insertion end section and the second pipe has a receiving end section, wherein the insertion end section is divided into a first spherical zone and a second spherical zone and wherein the receiving end section is shaped to form a third spherical zone, wherein the first spherical zone adjoins a free end of the insertion end section and has a first outer radius that is identical to a first inner radius of the receiving end section, wherein the first spherical zone is adapted to be inserted into the receiving end section, wherein the second spherical zone has a second outer radius that is identical to a third outer radius of the receiving end section; the pipe clamp comprising: a clamping strap that, when the pipes are inserted into one another, is configured to be placed circumferentially about the receiving end section and the second spherical zone, wherein the clamping strap has a first outwardly projecting clamping jaw and a second outwardly projecting clamping jaw, wherein the first and second clamping jaws each have a hole; a clamping screw having a screw head and a threaded shaft; the clamping screw extending through the holes in the first and second clamping jaws; wherein the head of the clamping screw is supported on a first side of the first clamping jaw which first side is facing away from the second clamping jaw; an intermediate part positioned at a first side of the second clamping jaw, which first side is facing away from the first clamping jaw, and having a threaded bore, wherein the threaded shaft of the clamping screw (10) engages the threaded bore; wherein the clamping strap is curved about a transverse axis, wherein the transverse axis, when the first and second pipes are coaxially inserted into one another and the clamping strap is adapted to rest in an untightened state against the receiving end section and the insertion end section, is positioned in a central plane of the clamping strap that extends perpendicularly to coaxial center axes of the first and second pipes at a spacing from a center of the first, second, and third spherical zones; wherein a second inner radius of the clamping strap in the untightened state is smaller than the second outer radius or the third outer radius such that a sum of the spacing and of the second inner radius is greater than the second outer radius or the third outer radius and wherein upon tightening the clamping strap forms a spherical zone in which its center of curvature coincides with the center and its inner radius is similar to the outer radii of the spherical zones. 2. The pipe clamp according to claim 1, wherein the holes of the camping jaws are slotted holes extending outwardly away from the clamping strap, wherein the slotted holes have a length that is selected such that outer ends of the slotted holes in a tightened state of the pipe clamp do not contact the screw shaft. 3. The pipe clamp according to claim 1, wherein the second clamping jaw has a projection projecting past the intermediate part, wherein the projection has a bent portion extending across a free end section of the screw shaft penetrating from the intermediate part, wherein the bent portion is configured to clamp a securing part against the clamping screw shaft. 4. The pipe clamp according to claim 1, wherein the first and second pipes are parts of a motor vehicle exhaust gas pipeline. 5. A connecting arrangement comprised of two pipes and a pipe clamp according to claim 1, wherein the first spherical zone has at least one outer circumferentially extending annular groove and a sealing ring arranged in the annular groove, wherein the sealing ring rests against an inner side of the receiving end section. 6. A pipe clamp for connecting a first pipe and a second pipe that are partially insertable into one another, wherein the first pipe has an insertion end section and the second pipe has a receiving end section, wherein the insertion end section is divided into a first spherical zone and a second spherical zone and wherein the receiving end section is shaped to form a third spherical zone, wherein the first spherical zone adjoins a free end of the insertion end section and has a first outer radius that is identical to a first inner radius of the receiving end section, wherein the first spherical zone is adapted to be inserted into the receiving end section, wherein the second spherical zone has a second outer radius that is identical to a third outer radius of the receiving end section; the pipe clamp comprising: a clamping strap that, when the pipes are inserted into one another, is configured to be placed circumferentially about the receiving end section and the second spherical zone, wherein the clamping strap has a first outwardly projecting clamping jaw and a second outwardly projecting clamping jaw, wherein the first and second clamping jaws each have a hole; a clamping screw having a screw head and a threaded shaft; the clamping screw extending through the holes in the first and second clamping jaws; wherein the head of the clamping screw is supported on a first side of the first clamping jaw which first side is facing away from the second clamping jaw; an intermediate part positioned at a first side of the second clamping jaw, which first side is facing away from the first clamping jaw, and having a threaded bore, wherein the threaded shaft of the clamping screw (10) engages the threaded bore; wherein the clamping strap is curved about a transverse axis, wherein the transverse axis, when the first and second pipes are coaxially inserted into one another and the clamping strap is adapted to rest in an untightened state against the receiving end section and the insertion end section, is positioned in a central plane of the clamping strap that extends perpendicularly to coaxial center axes of the first and second pipes at a spacing from a center of the first, second, and third spherical zones; wherein a second inner radius of the clamping strap in the untightened state is smaller than the second outer radius or the third outer radius such that a sum of the spacing and of the second inner radius is greater than the second outer radius or the third outer radius and wherein upon tightening the clamping strap forms a spherical zone in which its center of curvature coincides with the center and its inner radius is similar to the outer radii of the spherical zones, wherein the first and second clamping jaws are formed as monolithic parts of the clamping strap, the pipe clamp further comprising a first hinge part having a through bore, wherein the first hinge part is positioned between the screw head and the first clamping jaw and wherein the screw shaft penetrates the through hole, wherein the first and second clamping jaws each have axial edge areas that are bent away from one another in a circular section shape and form axial outer walls that are circular section shaped and bent away from one another, wherein the first hinge part is arranged between the outer walls of the first clamping jaw and between the first side of the first clamping jaw and the screw head, wherein the first hinge part has a cylindrically shaped side resting against the first clamping jaw and is rotatable relative to the first clamping jaw, wherein the intermediate part forms a second hinge part and has a cylindrically shaped side resting against the first side of the second clamping jaw so as to be rotatable relative to the second clamping jaw. 7. The pipe clamp according to claim 6, wherein the first and second hinge parts are solid hinge bolts or hinge sleeves. 8. The pipe clamp according to claim 6, wherein a side of the first hinge part resting against the screw head is planar. 9. The pipe clamp according to claim 8, wherein a side of the second hinge part facing away from the second clamping jaw is planar. 10. The pipe clamp according to claim 9, wherein the ridges are shorter than an axial width of the clamping jaws. 11. The pipe clamp according to claim 6, wherein the first and second clamping jaws each have a second side forming an opposing projection opposing one another, wherein the opposing projections each are double-pitch roof shaped and each have a ridge extending in an axial direction of the pipe clamp, wherein the opposing projections each have a facing side that faces the respective facing side of the respective opposing projection, wherein the facing sides are slanted toward one another so as to be positioned at an acute angle relative to a transverse plane of the clamping screw. 12. A pipe clamp for connecting a first pipe and a second pipe that are partially insertable into one another, wherein the first pipe has an insertion end section and the second pipe has a receiving end section, wherein the insertion end section is divided into a first spherical zone and a second spherical zone and wherein the receiving end section is shaped to form a third spherical zone, wherein the first spherical zone adjoins a free end of the insertion end section and has a first outer radius that is identical to a first inner radius of the receiving end section, wherein the first spherical zone is adapted to be inserted into the receiving end section, wherein the second spherical zone has a second outer radius that is identical to a third outer radius of the receiving end section; the pipe clamp comprising: a clamping strap that, when the pipes are inserted into one another, is configured to be placed circumferentially about the receiving end section and the second spherical zone, wherein the clamping strap has a first outwardly projecting clamping jaw and a second outwardly projecting clamping jaw, wherein the first and second clamping jaws each have a hole; a clamping screw having a screw head and a threaded shaft; the clamping screw extending through the holes in the first and second clamping jaws; wherein the head of the clamping screw is supported on a first side of the first clamping jaw which first side is facing away from the second clamping jaw; an intermediate part positioned at a first side of the second clamping jaw, which first side is facing away from the first clamping jaw, and having a threaded bore, wherein the threaded shaft of the clamping screw (10) engages the threaded bore; wherein the clamping strap is curved about a transverse axis, wherein the transverse axis, when the first and second pipes are coaxially inserted into one another and the clamping strap is adapted to rest in an untightened state against the receiving end section and the insertion end section, is positioned in a central plane of the clamping strap that extends perpendicularly to coaxial center axes of the first and second pipes at a spacing from a center of the first, second, and third spherical zones; wherein a second inner radius of the clamping strap in the untightened state is smaller than the second outer radius or the third outer radius such that a sum of the spacing and of the second inner radius is greater than the second outer radius or the third outer radius and wherein upon tightening the clamping strap forms a spherical zone in which its center of curvature coincides with the center and its inner radius is similar to the outer radii of the spherical zones, further comprising a tab for pre-mounting the pipe clamp on one of the first and second pipes at least up to a point of final mounting or for securing the pipe clamp stationarily on a chassis of a motor vehicle. 13. The pipe clamp according to claim 12, wherein the tab is welded to the clamping strap or is a monolithic part of the clamping strap. 14. A pipe clamp for connecting a first pipe and a second pipe that are partially insertable into one another, wherein the first pipe has an insertion end section and the second pipe has a receiving end section, wherein the insertion end section is divided into a first spherical zone and a second spherical zone and wherein the receiving end section is shaped to form a third spherical zone, wherein the first spherical zone adjoins a free end of the insertion end section and has a first outer radius that is identical to a first inner radius of the receiving end section, wherein the first spherical zone is adapted to be inserted into the receiving end section, wherein the second spherical zone has a second outer radius that is identical to a third outer radius of the receiving end section; the pipe clamp comprising: a clamping strap that, when the pipes are inserted into one another, is configured to be placed circumferentially about the receiving end section and the second spherical zone, wherein the clamping strap has a first outwardly projecting clamping jaw and a second outwardly projecting clamping jaw, wherein the first and second clamping jaws each have a hole; a clamping screw having a screw head and a threaded shaft; the clamping screw extending through the holes in the first and second clamping jaws; wherein the head of the clamping screw is supported on a first side of the first clamping jaw which first side is facing away from the second clamping jaw; an intermediate part positioned at a first side of the second clamping jaw, which first side is facing away from the first clamping jaw, and having a threaded bore, wherein the threaded shaft of the clamping screw (10) engages the threaded bore; wherein the clamping strap is curved about a transverse axis, wherein the transverse axis, when the first and second pipes are coaxially inserted into one another and the clamping strap is adapted to rest in an untightened state against the receiving end section and the insertion end section, is positioned in a central plane of the clamping strap that extends perpendicularly to coaxial center axes of the first and second pipes at a spacing from a center of the first, second, and third spherical zones; wherein a second inner radius of the clamping strap in the untightened state is smaller than the second outer radius or the third outer radius such that a sum of the spacing and of the second inner radius is greater than the second outer radius or the third outer radius and wherein upon tightening the clamping strap forms a spherical zone in which its center of curvature coincides with the center and its inner radius is similar to the outer radii of the spherical zones, wherein the clamping strap is provided with reinforcement grooves.
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