Overmolded transponder
First Claim
Patent Images
1. An overmolded transponder for an electronic identification system comprising:
- an antenna;
a transponder circuit including signal processing circuitry electrically interconnected to said antenna;
a core element on which said antenna and said transponder circuit are mounted; and
an overmolded casing formed by placing said antenna, transponder circuit and core element within a cavity formed by mold tooling in an injection molding machine and injecting an overmolding material into said cavity so as to overmold and encase said core element, said transponder circuit and said antenna.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of fabricating, a composition and overmolded components fabricated by the method and with the composition such as an overmolded transponder circuitry for a radio frequency identification device.
100 Citations
24 Claims
-
1. An overmolded transponder for an electronic identification system comprising:
-
an antenna;
a transponder circuit including signal processing circuitry electrically interconnected to said antenna;
a core element on which said antenna and said transponder circuit are mounted; and
an overmolded casing formed by placing said antenna, transponder circuit and core element within a cavity formed by mold tooling in an injection molding machine and injecting an overmolding material into said cavity so as to overmold and encase said core element, said transponder circuit and said antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
a thermoplastic material selected from at least one of the group consisting of rubber modified polyolefins, mettallocene, polyether-ester block copolymers, polyether-amide block copolymers, thermoplastic based urethanes, copolymers of ethylene with butene and maleic anhydride, hydrogenated maleic anhydride, polyester polycaprolactone, polyester polyadipate, polytetramethylene glycol ether, thermoplastic elastomer, polypropylene, vinyl, chlorinated polyether, polybutylene terephalate, ploymethylpentene, silicone, polyvinyl chloride, thermoplastic polyurethane, polycarbonate, polyurethane, polyamide, polybutylene and, polyethylene; and
a weighting material selected from the group consisting of barium sulfate, zinc oxide, calcium carbonate, titanium dioxide, carbon black, kaolin, magnesium aluminum silicate, silica, iron oxide, glass spheres and wollastonite.
-
-
15. The transponder of claim 1 wherein said overmolding material is a thermoplastic polyester elastomer (TPE), mixed with barium sulfate in a ratio of between about 20 to 90% TPE and 80% to 10% barium sulfate to have a specific gravity in the range of between about 1.7 and 2.
-
16. The transponder of claim 1 wherein said core element is made of a frangible material forming a frangible core.
-
17. The transponder of claim 16 wherein said frangible core is formed from a material selected from the group consisting of ferrite, powdered metals and high energy product magnets such as samarium cobalt and neodymium-iron-boron materials.
-
18. A method of forming an overmolded transponder for an electronic identification system comprising:
-
providing a transponder circuit including signal processing circuitry electrically interconnected to an antenna;
mounting said antenna and said transponder circuit on a core element to form an assembly;
placing said transponder circuit and core element assembly within a cavity formed by mold tooling in an injection molding machine, and injecting an overmolding material into said cavity so as to overmold and encase said core element and said transponder circuit. - View Dependent Claims (19, 20, 21, 22, 23, 24)
-
Specification