Granted Patent B2

US 12,226,876 · App. 16/840,312 · Granted Feb 18, 2025

Inventors: Robin Chandras Jayaram (Thiruvananthapuram, IN); Arunvel Thangamani (Chennai, IN)

Assignees: SAINT-GOBAIN ABRASIVES, INC.; SAINT-GOBAIN ABRASIFS

B24D11/001B24B49/10B24D3/00B24D3/10B24D3/346

Abstract

Claims (36)

1. An abrasive article comprising:

a body comprising a portion comprising a metal or metal alloy; and

an electronic assembly coupled to the body, wherein the electronic assembly comprises:

an electronic device;

a first portion underlying at least a portion of the electronic device, wherein the first portion is disposed between the body and the electronic device, and wherein the first portion comprises a material having a first average relative magnetic permeability;

a second portion overlying at least a portion of the electronic device and comprising a material having a second average relative magnetic permeability;

a dielectric difference value (ΔDV=DV1/DV2) of at least 1.1 and not greater than 1000, wherein DV1 is a first average dielectric value of the first portion and DV2 is a second average dielectric value of the second portion; and

a magnetic permeability difference value (ΔMP=MP2/MP1) within a range of at least 1.1 and not greater than 100, wherein MP1 is the first average relative magnetic permeability and MP2 is the second average relative magnetic permeability,

wherein the first portion comprises the first average relative magnetic permeability within a range of at least 1 and not greater than 15 for electromagnetic radiation of at least 3 kHz and not greater than 300 GHz; or the first average dielectric value of at least 1 and not greater than 20;

wherein second portion comprises the second average relative magnetic permeability within a range of at least 1 and not greater than 15 for electromagnetic radiation of at least 3 kHz and not greater than 300 GHz; or the second average dielectric value of at least 1 and not greater than 20.

2. The abrasive article of claim 1 , wherein the metal or metal alloy comprises a conductivity of at least 10×10 3 Siemens/meter at 25° C., wherein the first portion is configured to electrically insulate the electronic device from the body.

3. The abrasive article of claim 2 , where the metal or metal alloy comprises a radio frequency attenuation value of at least 40 dB.

4. The abrasive article of claim 1 , wherein:

the first average relative magnetic permeability is within the range of at least 1 and not greater than 15 for electromagnetic radiation of at least 3 kHz and not greater than 300 GHz, and the second average relative magnetic permeability of the second portion is within the range of at least 1 and not greater than 15 for electromagnetic radiation of at least 3 kHz and not greater than 300 GHz; and

the first average dielectric value is at least 1 and not greater than 20, and the second average dielectric value is at least 1 and not greater than 20.

5. The abrasive article of claim 1 , wherein the electronic device is configured for wireless communication and has a minimum effective communication range of at least 0.3 meters and a minimum data transmission rate of at least 4 kbps.

6. The abrasive article of claim 1 , wherein a first RF reflectance of the first portion is at least 50% and not greater than 90% for electromagnetic radiation of at least 3 kHz and not greater than 3 GHz, and a second RF reflectance of the second portion is not greater than 40% for electromagnetic radiation of at least 3 kHz and not greater than 300 GHz.

7. The abrasive article of claim 1 , wherein the second portion is overlying at least a portion of the first portion.

8. The abrasive article of claim 1 , further comprising a reflection difference value (ΔRFR=RFR1/RFR2) of at least 1.1 and not greater than 100, wherein RFR1 is a RF reflectance of the first portion and RFR2 is a RF reflectance of the second portion.

9. The abrasive article of claim 1 , wherein the electronic assembly is surrounded by the first portion and the second portion.

10. The abrasive article of claim 2 , wherein the electronic device includes a device including an electronic tag, electronic memory, a sensor, an analog-to-digital converter, a transmitter, a receiver, a transceiver, a modulator circuit, a multiplexer, an antenna, a near-field communication device, a power source a display, an optical device, a global positioning system, a data transponder, a secure data storage device, a secure logic device, or any combination thereof.

11. The abrasive article of claim 3 , wherein the electronic device comprises at least one of a passive radio frequency identification (RFID) tag, an active radio frequency identification (RFID) tag, a sensor, a passive near-field communication device (passive NFC), an active near-field communication device (active NFC), or any combination thereof.

12. The abrasive article of claim 2 , wherein the second portion comprises a protective layer including a hydrophobic layer, an autoclavable material, a thermal barrier, a pressure barrier, or any combination thereof.

13. The abrasive article of claim 1 , wherein the first portion is at least partially embedded in the portion of the body comprising the metal or metal alloy.

14. The abrasive article of claim 1 , wherein the first portion is coupled to the portion of the body comprising the metal or metal alloy.

15. The abrasive article of claim 1 , wherein the first portion comprises polyimide, polyethylene terephthalate, polytetrafluoroethylene, or any combination thereof; and further wherein the second portion comprises PDMS, PEN, polyimide, PEEK or any combination thereof.

16. The abrasive article of claim 1 , wherein the electronic assembly is releasably secured to the body by one or more securing assemblies configured to facilitate selective removal of the electronic assembly from the body.

17. The abrasive article of claim 1 , wherein the electronic assembly is placed in a cavity extending into the body; and wherein a spacing factor of the electronic assembly, defined by Dw/Dt, is at least 0.65, wherein Dw is the distance from an outer edge of the electronic assembly to an outer edge of the cavity at an exterior surface of the body, and Dt is a depth of the cavity.

18. The abrasive article of claim 17 , wherein the electronic device is positioned within the cavity at least 1 mm below a level of the exterior surface of the body.

19. The abrasive article of claim 17 , wherein the metal or metal alloy comprises a RF attenuation value of at least 40 dB.

20. The abrasive article of claim 17 , further comprising at least one of

1) A wall of the cavity having an angle of at least 100 degrees and not greater than 170 degrees relative to the exterior surface;

2) An adapter configured to at least partially contain the electronic assembly and be disposed within the cavity to center the electronic assembly within the cavity;

3) A spacing factor of at least 0.9;

4) A bottom surface of the cavity having a normalized average flatness between 0.00001 mm −1 to 0.0001 mm −1 ; or

5) Any combination thereof.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (400)

Cited By (3)

US 1,116,692 US 1,116,693 US 1,116,694