Removable stud for joining casing flanges
First Claim
1. A stud for interconnecting a pair of components that each include a stud-receiving aperture, said stud comprising:
- a generally cylindrical shank including a first external thread adjacent a first longitudinal end, and a second external thread adjacent a second longitudinal end opposite from the first end, wherein the first and second threads each terminate at respective inner end points spaced from each other and inwardly of the respective ends to define an unthreaded region between the first and second threads; and
an external formation carried by the shank in the unthreaded region between the inner end points of the threads and extending radially outwardly from the shank, the external formation having a peripheral surface that is adapted to be engageable with a complementary anti-rotation member to prevent unintended rotation of the stud relative to the anti-rotation member.
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Accused Products
Abstract
A stud for interconnecting adjacent flanges of a flanged joint in a tubular casing. The flanges each contain apertures to receive the stud and each flange is inclined relative to the casing outer surface, with one flange extending radially outwardly and the other flange extending radially inwardly, as a result of which one end of the stud extends externally of the flanged joint and the other end extends internally. The stud includes an external formation that is of non-circular form and that is carried by the stud between the threaded ends to extend radially outwardly. The external formation is adapted to be engaged by an anti-rotation member to prevent unintended rotation of the stud. The stud is removable from the flanged joint without the need to completely disassemble the joint to remove a broken stud.
30 Citations
25 Claims
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1. A stud for interconnecting a pair of components that each include a stud-receiving aperture, said stud comprising:
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a generally cylindrical shank including a first external thread adjacent a first longitudinal end, and a second external thread adjacent a second longitudinal end opposite from the first end, wherein the first and second threads each terminate at respective inner end points spaced from each other and inwardly of the respective ends to define an unthreaded region between the first and second threads; and
an external formation carried by the shank in the unthreaded region between the inner end points of the threads and extending radially outwardly from the shank, the external formation having a peripheral surface that is adapted to be engageable with a complementary anti-rotation member to prevent unintended rotation of the stud relative to the anti-rotation member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A flange connection for connecting together a pair of casing end flanges of a pair of end-to-end, axisymmetric tubular casings, said connection comprising:
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a) a first casing having at least a first end flange that extends substantially radially outwardly relative to the first casing, and a second casing having at least a second end flange that extends substantially radially inwardly relative to the second casing and that is engageable with the first end flange, wherein the end flanges each include a plurality of circumferentially-spaced apertures and wherein corresponding apertures of the respective flanges are substantially coaxially aligned;
b) a stud extending through a pair of aligned flange apertures and including a stud shank, wherein one end of the stud is threadedly received within one of the aligned apertures and the other end of the stud extends outwardly of the other aligned flange aperture and is engaged by a connecting nut to hold the pair of flanges in face-to-face relationship;
c) an external formation carried by the stud in an inner region between end threads and extending radially outwardly from the stud, the external formation having a peripheral surface; and
d) an anti-rotation member that is adapted to be engageable with the peripheral surface of the external formation to prevent unintended rotation of the stud relative to the casing end flanges. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification