Conductive loop detection member

Patent metadata

Field	Value
Publication number	US-10366316-B2
Application number	US-201715625695-A
Country	US
Kind code	B2
Filing date	Jun 16, 2017
Priority date	Sep 26, 2016
Publication date	Jul 30, 2019
Grant date	Jul 30, 2019

Abstract

A fluid treatment cartridge includes a housing having a fluid inlet and a fluid outlet with a treatment media contained within the housing. The fluid treatment cartridge includes a detection member comprising at least one closed electrically conductive loop having at least two spatially separate sections. Each of the sections generates a magnetic response when at least one section is electromagnetically excited. The magnetic response of each section is predetermined by the physical shape of the section and comprises at least one of a predetermined magnetic phase response and a predetermined magnetic amplitude response. The predetermined magnetic response of at least one other section of the closed electrically conductive loop corresponds to at least a one digit code.

First claim

The invention claimed is:

1. A component, comprising:
a detection member comprising at least one closed continuously electrically conductive loop having at least two spatially separate sections; and
one or more engagement features configured to reversibly engage with a host device, the engagement features configured to locate the closed continuously electrically conductive loop relative to a reader of the host device so that at least one section of the closed conductive loop is in position to be electromagnetically excited by a signal emitted by the reader and the reader is in position to sense a predetermined magnetic response of at least one other section of the closed electrically conductive loop, the predetermined magnetic response of the at least one other section of the at least two spatially separate sections corresponding to at least a one digit code.

2. The component of claim 1 , wherein the predetermined magnetic response comprises at least one of an amplitude response and a phase response.

3. The component of claim 1 , wherein the at least a one digit code comprises a multiple digit code.

4. The component of claim 1 , wherein the closed conductive loop is arranged in a single layer.

5. The component of claim 1 , wherein the closed conductive loop is arranged in multiple layers.

6. The component of claim 1 , wherein the closed conductive loop has a single inductive turn.

7. The component of claim 1 , wherein the closed conductive loop comprises multiple inductive turns.

8. The component of claim 1 , wherein:
the at least a one digit code comprises a multiple digit code; and
the at least one other section comprises at least two other sections, a first magnetic response of a first section of the at least two other sections representing a first value of the multiple digit code and a different, second magnetic response of a second section of the at least two other sections representing a different, second value of the multiple digit code.

9. The component of claim 1 , wherein the code is a binary code.

10. The component of claim 1 , wherein the code is a non-binary code.

11. A component comprising a detection member that includes at least one closed electrically conductive loop comprising at least two spatially separate sections, each of the at least two spatially separate sections generating a magnetic response predetermined by the physical shape of the at least two spatially separate sections when at least one section of the at least two spatially separate sections is electromagnetically excited, the magnetic response comprising at least one of a predetermined magnetic phase response and a predetermined magnetic amplitude response, the predetermined magnetic response of at least one other section of the at least two spatially separate sections corresponding to at least a one digit code.

12. The component of claim 11 , wherein the component includes features configured to reversibly engage with a host device.

13. The component of claim 11 , wherein a first magnetic amplitude response of a first section of the at least two spatially separate sections of the closed electrically conductive loop is different from a second magnetic amplitude response of a second section of the at least two spatially separate sections of the closed electrically conductive loop.

14. The component of claim 11 , wherein a first magnetic phase response of a first section of the at least two spatially separate sections of the closed electrically conductive loop is different from a second magnetic phase response of a second section of the at least two spatially separate sections of the closed electrically conductive loop.

15. The component of claim 11 , further comprising a cross over disposed between first and second sections of the at least two spatially separate sections of the closed electrically conductive loop, the cross over reversing an angular direction of current flow through the second section relative to a direction of current flow through the first section.

16. The component of claim 11 , wherein the at least two spatially separate sections of the closed conductive loop comprise:
a first section having a first non-electrically conductive area inside the closed electrically conductive loop and a first magnetic amplitude response; and
a second section having a second non-electrically conductive area inside the closed electrically conductive loop that is greater than the first non-electrically conductive area and a second magnetic amplitude response that is different from the first magnetic amplitude response.

17. The component of claim 11 , wherein the at least two spatially separate sections comprise:
a notched section containing at least one notch; and
an un-notched section, wherein a largest circle that will fit within inner edges of the shortest conductive path of the closed electrically conductive loop in the un-notched section has diameter d 1 and a largest circle that will fit within the inner edges of the shortest conductive path of the closed electrically conductive loop in the notched section has diameter d 2 and d 1 >d 2 .

18. The component of claim 11 , wherein the at least two spatially separate sections of the closed conductive loop comprise a branched section having two or more electrically conductive branches that are electrically connected in parallel.

19. The component of claim 11 , wherein at least one section of the at least two spatially separate sections of the closed electrically conductive loop includes an electrically conductive area that supports eddy currents disposed within a shortest conductive path of the closed electrically conductive loop.

20. The component of claim 11 , wherein the at least two spatially separate sections of the closed electrically conductive loop comprise a first section having a first number of inductive turns and a second section having a second number of inductive turns where the first number is greater than the second number.

21. The component of claim 11 , wherein the closed electrically conductive loop is a single inductive turn loop.

22. The component of claim 11 , wherein the closed electrically conductive loop comprises at least three spatially separate sections, each of the three spatially separate sections generating a predetermined magnetic response when at least one section of the three spatially separate sections is electromagnetically excited, the magnetic responses of at least two other sections of the three spatially separate sections corresponding to at least a two digit code.

23. The component of claim 11 , wherein the at least one closed electrically conductive loop comprises two closed electrically conductive loops that are inductively coupled.

24. A system comprising:
a component comprising a detection member that includes at least one closed electrically conductive loop comprising at least two spatially separate sections, each of the at least two spatially separate sections generating a magnetic response predetermined by the physical shape of the at least two spatially separate sections when at least one section of the at least two spatially separate sections is electromagnetically excited, the magnetic response comprising at least one of a predetermined magnetic phase response and a predetermined magnetic amplitude response, the predetermined magnetic response of at least one other section of the at least two spatially separate sections corresponding to at least a one digit cod

Assignees

• 3M Innovative Properties Co

Inventors

• Bonifas Andrew P
• Hable Brock A
• Jesme Ronald D
• Amell Nicholas G

Classifications

• B01D27/10

  Safety devices, e.g. by-passes · CPC title

• G06K19/0672

  with resonating marks · CPC title

• G06K19/06196 Primary

  Constructional details · CPC title

• G06K19/06187

  with magnetically detectable marking · CPC title

• G01D5/142

  using Hall-effect devices (measuring magnetic variables using Hall-effect or other galvanomagnetic devices G01R33/06) · CPC title