Patent US3750120A successfully refreshed from Google Patents.
US3750120A
Expired / Lapsed
US
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Method and apparatus for recording information on and retrieving information from a pneumatic tire
Assignee: Bridgestone Firestone Inc
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Filing: 1971-10-07
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Granted: 1973-07-31
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Expires: 1991-10-07
Abstract
Abstract A tire or a portion thereof is compounded with a magnetizable material mixed in with the conventional rubber stock. At any point during the manufacturing porcess, such as the building of the tire, a digital code is magnetically printed on the magnetic rubber by a magnetic printing head which is preferably electronically controlled but which could utilize permanent magnets. Thereafter the tire is vulcanized and eventually ready for public use with the magnetic information remaining therein. An electonically controlled magnetic reading device can be utilized to read out the recorded information at any desired time.
Inventors
- 👤 J Mccarty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:26
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/0601; B29D30/0633; G; G06; G06K; G06K1/00; G06K1/12; B29C; B29C37/00; B29C2037/80; B29D30/72; B29D2030/726; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
73 words
A method of manufacturing a tire with coded information imprinted thereon comprising the steps of constructing at least a portion of a tire with a magnetizable compound mixed and interspersed therein thereby rendering the entire said portion of the tire a complete and continuous magnetizable medium, thereafter magnetically imprinting for subsequent retrieval a digital code on said portion of the tire containing said magnetizable compound to magnetize selective portions of said magnetizable medium.
Claim 2
Independent Claim
73 words
A method of manufacturing a tire with coded information imprinted thereon comprising the steps of constructing at least a portion of a tire with a magnetizable compound mixed and interspersed therein thereby rendering the entire said portion of the tire a complete and continuous magnetizable medium, thereafter magnetically imprinting for subsequent retrieval a digital code on said portion of the tire containing said magnetizable compound to magnetize selective portions of said magnetizable medium.
Claim 3
Dependent Claim
47 words
A method according to claim 1 wherein the imprinting step takes place during the building of the tire and includes the step of rotating the tire on the building drum with a magnetic printing head in juxtaposition with said portion of the tire containing said magnetizable compound.
Claim 4
Dependent Claim
24 words
A method according to claim 2 including the step of electronically feeding said magnetic printing head with the signals corresponding to the coded information.
Claim 5
Dependent Claim
56 words
A tire having a sidewall, at least a portion of the sidewall comprising, a mixture of magnetizable material and rubber thereby forming a continuous magnetic medium, said magnetizable material being in a powder form interspersed throughout the portion of the sidewall and consisting of up to 20 percent by weight of the portion of the sidewall.
Claim 6
Dependent Claim
56 words
A tire having a sidewall, at least a portion of the sidewall comprising, a mixture of magnetizable material and rubber thereby forming a continuous magnetic medium, said magnetizable material being in a powder form interspersed throughout the portion of the sidewall and consisting of up to 20 percent by weight of the portion of the sidewall.
Claim 7
Dependent Claim
24 words
A tire according to claim 4 wherein the magnetizAble material is magnetite and is 7 1/2 percent by weight of the portion of sidewall.
Claim 8
Dependent Claim
20 words
A tire according to claim 4 wherein bits of information are coded onto the magnetic medium to magnetize the material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |