Dual purpose clamp for securing aftertreatment housing joints

Patent metadata

Field	Value
Publication number	US-9926956-B2
Application number	US-201615048311-A
Country	US
Kind code	B2
Filing date	Feb 19, 2016
Priority date	Feb 19, 2016
Publication date	Mar 27, 2018
Grant date	Mar 27, 2018

Abstract

An apparatus comprises a housing comprising a housing first portion and a housing second portion. The housing first portion comprises a first joint portion overlapping a second joint portion of the housing second portion so as to form a housing joint. A clamp is positioned on the housing joint and comprises a base portion. A first surface of the base portion is positioned on the housing joint. A plurality of legs extend from the base portion towards the housing each of which are spaced from each other around the housing joint. A plurality of flange segments extend from each side of the base portion away from the housing. A band is positioned on a second surface of the base portion opposite the first surface and around the clamp. The band is positioned between the plurality of flange segments and operatively coupled to the housing via the clamp.

First claim

What is claimed is:

1. An apparatus, comprising;
a housing comprising a housing first portion and a housing second portion, the housing first portion comprising a first joint portion overlapping a second joint portion of the housing second portion so as to form a housing joint;
a clamp positioned on the housing joint, the clamp comprising:
a base portion, a first surface of the base portion positioned on the housing joint,
a plurality of legs extending from the base portion towards the housing, each of the plurality of legs spaced from each other around the housing joint, and
a plurality of flange segments extending from each side of the base portion away from the housing; and

a band positioned on a second surface of the base portion opposite the first surface and around the clamp, the band positioned between the plurality of flange segments, the band operatively coupled to the housing via the clamp.

2. The apparatus of claim 1 , wherein the plurality of flange segments comprise a first flange segment and a second flange segment positioned on opposite ends of the base portion, the band positioned between the first flange segment and the second flange segment on the second surface, the first flange segment and the second flange segment preventing the band from sliding off the clamp.

3. The apparatus of claim 2 , wherein the first flange segment and the second flange segment extend from the base portion at an angle in a range of 30 degrees to 110 degrees inclusive.

4. The apparatus of claim 1 , further comprising;
a winch operatively coupled to the band, the winch configured to secure the band around the clamp.

5. The apparatus of claim 1 , wherein the first joint portion comprises a bead and the second joint portion comprises a flare, the flare overlapping at least a portion of the bead.

6. The apparatus of claim 5 , wherein each of the plurality of legs of the clamp comprise a first leg and a second leg, the first leg abutting at least a portion of the bead and the second leg abutting at least a portion of the flare.

7. The apparatus of claim 1 , wherein a first spacing between the plurality of flange segments is greater than a second spacing between the plurality of legs.

8. The apparatus of claim 1 , wherein the clamp comprises a plurality of clamp segments, each of the plurality of clamp segments positioned around at least a portion of the housing joint.

9. The apparatus of claim 8 , wherein the housing comprises a cylindrical housing defining a circular cross-section.

10. The apparatus of claim 9 , wherein the plurality of clamp segments are curved so as to conform to a curvature defined by the cylindrical housing.

11. An aftertreatment system, comprising;
a housing comprising a housing first portion and a housing second portion, the housing first portion comprising a first joint portion overlapping a second joint portion of the housing second portion so as to form a housing joint;
a first aftertreatment component positioned within a first internal volume defined by the housing first portion;
a clamp positioned on the housing joint, the clamp comprising:
a base portion, a first surface of the base portion positioned on the housing joint,
a plurality of legs extending from the base portion towards the housing, the plurality of legs spaced from each other around the housing joint, and
a plurality of flange segments extending from each side of the base portion away from the housing; and

a band positioned on a second surface of the base portion opposite the first surface and around the clamp, the band positioned between the plurality of flange segments, the band operatively coupled to the housing via the clamp.

12. The aftertreatment system of claim 11 , wherein a second aftertreatment component is positioned within a second internal volume defined by the housing second portion.

13. The aftertreatment system of claim 12 , wherein at least one of the first aftertreatment component and the second aftertreatment component comprises a selective catalytic reduction system.

14. The aftertreatment system of claim 11 , wherein the plurality of flange segments comprise a first flange segment and a second flange segment positioned on opposite ends of the base portion, the band positioned between the first flange segment and the second flange segment on the second surface, the first flange segment and the second flange segment preventing the band from sliding off the clamp.

15. The aftertreatment system of claim 14 , wherein the first flange segment and the second flange segment extend from the base portion at an angle in a range of 30 degrees to 110 degrees inclusive.

16. The aftertreatment system of claim 11 , wherein the first joint portion comprises a bead and the second joint portion comprises a flare, the flare overlapping at least a portion of the bead.

17. The aftertreatment system of claim 16 , wherein each of the plurality of legs of the clamp comprise a first leg and a second leg, the first leg abutting at least a portion of the bead and the second leg abutting at least a portion of the flare.

18. The aftertreatment system of claim 11 , wherein the clamp comprises a plurality of clamp segments, each of the plurality of clamp segments positioned around at least a portion of the housing joint.

19. The aftertreatment system of claim 18 , wherein the housing comprises a cylindrical housing defining a circular cross-section.

20. The aftertreatment system of claim 19 , wherein the plurality of clamp segments are curved so as to conform to a curvature defined by the cylindrical housing.

21. A method of securing a band positioned on a housing joint of a housing, the housing comprising a housing first portion comprising a first joint portion and a housing second portion comprising a second joint portion, the method comprising:
positioning the second joint portion of the housing second portion in contact with and overlapping at least a portion of the first joint portion of the housing first portion, thereby forming a housing joint,
positioning a clamp on the housing joint, the clamp comprising a base portion comprising a first surface and a second surface opposite the first surface, a plurality of legs extending from the base portion towards the housing, and a plurality of flange segments extending from each side of the second surface of the base portion away from the housing, the positioning comprising positioning the first surface of the clamp on the housing joint so as to cause the plurality of legs to be spaced from each other around the housing joint;
positioning the band on the second surface around the clamp between the plurality of flange segments; and
securing the band around the clamp.

22. The method of claim 21 , wherein the plurality of flange segments comprise a first flange segment and a second flange segment positioned on opposite ends of the base portion, the first flange segment and the second flange segment preventing the band from sliding off the clamp.

23. The method of claim 22 , wherein the first flange segment and the second flange segment extend from the base portion at an angle in a range of 30 degrees to 110 degrees inclusive.

24. The method of claim 21 , wherein the first joint portion comprises a bead and the second joint portion comprises a flare.

25. The method of claim 24 , wherein each of the plurality of legs of the clamp comprise a first leg and a second leg, the first leg abut

Assignees

• Cummins Emission Solutions Inc
• Cummins Emission Solutions Inc

Inventors

• Horton Bradley
• Roe Thomas O

Classifications

• B01D53/9418

  for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas · CPC title

• F01N3/2066 Primary

  Selective catalytic reduction [SCR] · CPC title

• F01N2450/20

  by mechanical joints, e.g. by deforming housing, tube, baffle plate or parts thereof · CPC title

• F16B2/08 Primary

  using bands · CPC title

• F16B2/065

  using screw-thread elements (F16B2/08 - F16B2/12 take precedence) · CPC title