US5853846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conformable magnetic articles underlaid beneath traffic-bearing surfaces
Assignee: 3M Co
•
Filing: 1996-10-15
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Granted: 1998-12-29
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Expires: 2016-10-15
Abstract
Abstract A conformable magnetic article for underlayment beneath a traffic-bearing surface which sends a magnetic signal to a sensor traveling over the traffic-bearing structure. The magnetic article comprises at least one conformable magnetic layer comprising a binder and a sufficient amount of magnetic particles dispersed within the binder to provide a magnetic signal through the traffic-bearing structure to a sensor.
Inventors
- 👤 Gary W. Clark
- 👤 Thomas J. Dahlin
- 👤 Richard E. Fayling
- 👤 Bernard A. Gonzalez
- 👤 David M. Hopstock
- 👤 Gregory F. Jacobs
- 👤 Robert L. Keech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:03
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/16; B32B13/00; B32B13/04; B32B13/047; B32B7/00; B32B7/04; B32B7/12; E; E01; E01F; E01F11/00; E01F9/00; E01F9/30; E01F9/50; E01F9/506; E01F9/512; G; G05; G05D; G05D1/00; G05D1/02; G05D1/021; G05D1/0259; G05D1/0263; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24355; Y10T428/24372; Y10T428/24421; Y10T428/24479; Y10T428/25; Y10T428/252; Y10T428/28; Y10T428/32
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
71 words
A conformable magnetic article for underlayment beneath a traffic-bearing surface to send a magnetic signal to a sensor traveling over the traffic-bearing surface, said magnetic article comprising at least one conformable magnetic layer comprising a binder and a sufficient amount of magnetic particles within the binder to provide the magnetic signal, the conformable layer being sufficiently conformable to meet the inelastic deformation test, wherein said article is perforated along its length.
Claim 2
Dependent Claim
71 words
A conformable magnetic article for underlayment beneath a traffic-bearing surface to send a magnetic signal to a sensor traveling over the traffic-bearing surface, said magnetic article comprising at least one conformable magnetic layer comprising a binder and a sufficient amount of magnetic particles within the binder to provide the magnetic signal, the conformable layer being sufficiently conformable to meet the inelastic deformation test, wherein said article is perforated along its length.
Claim 3
Dependent Claim
12 words
The magnetic article of claim 1, wherein said article is substantially inelastic.
Claim 4
Dependent Claim
20 words
The magnetic article of claim 1, wherein said article comprises sections of alternating polarity along the length of the article.
Claim 5
Dependent Claim
25 words
The magnetic article of claim 1, wherein said magnetic article further comprises a layer of pressure-sensitive adhesive applied to a major surface of the article.
Claim 6
Independent Claim
112 words
A system for guiding vehicles or mobile objects traveling on a traffic-bearing surface, comprising: (a) at least one conformable magnetic article for underlaying beneath a traffic-bearing surface to send a magnetic signal to a sensor traveling over the traffic-bearing surface, said magnetic article comprising at least one conformable magnetic layer comprising a binder and a sufficient amount of magnetic particles within the binder to provide the magnetic signal, the conformable layer being sufficiently conformable to meet the inelastic deformation test; and (b) a sensor for passing over the traffic-bearing surface, said sensor comprising means for detecting the magnetic signal through the traffic-bearing surface, wherein said magnetic article is perforated along its length.
Claim 7
Independent Claim
112 words
A system for guiding vehicles or mobile objects traveling on a traffic-bearing surface, comprising: (a) at least one conformable magnetic article for underlaying beneath a traffic-bearing surface to send a magnetic signal to a sensor traveling over the traffic-bearing surface, said magnetic article comprising at least one conformable magnetic layer comprising a binder and a sufficient amount of magnetic particles within the binder to provide the magnetic signal, the conformable layer being sufficiently conformable to meet the inelastic deformation test; and (b) a sensor for passing over the traffic-bearing surface, said sensor comprising means for detecting the magnetic signal through the traffic-bearing surface, wherein said magnetic article is perforated along its length.
Claim 8
Dependent Claim
12 words
The system of claim 5, wherein said magnetic article is substantially inelastic.
Claim 9
Dependent Claim
17 words
The system of claim 5, wherein said magnetic article comprises sections of alternating polarity along its length.
Claim 10
Dependent Claim
20 words
The system of claim 5, wherein said sensor is mounted on a vehicle adapted to travel over the traffic-bearing surface.
Claim 11
Dependent Claim
25 words
The method of claim 5, wherein said magnetic article further comprises a layer of pressure sensitive adhesive applied to a major surface of the article.
Claim 12
Independent Claim
123 words
A system for guiding vehicles or mobile objects traveling on a traffic-bearing surface, comprising: (a) a traffic-bearing surface comprising at least two layers of material; (b) a conformable magnetic article underlaid beneath the top surface of said traffic-bearing surface between two of said layers, said article adapted to send a magnetic signal to a sensor traveling over the traffic-bearing surface, said magnetic article comprising at least one conformable magnetic layer comprising a binder and a sufficient amount of magnetic particles within the binder to provide the magnetic signal, the conformable layer being sufficiently conformable to meet the inelastic deformation test; and (c) a sensor for passing over the traffic-bearing surface, said sensor comprising means for detecting the magnetic signal through said traffic-bearing surface.
Claim 13
Independent Claim
123 words
A system for guiding vehicles or mobile objects traveling on a traffic-bearing surface, comprising: (a) a traffic-bearing surface comprising at least two layers of material; (b) a conformable magnetic article underlaid beneath the top surface of said traffic-bearing surface between two of said layers, said article adapted to send a magnetic signal to a sensor traveling over the traffic-bearing surface, said magnetic article comprising at least one conformable magnetic layer comprising a binder and a sufficient amount of magnetic particles within the binder to provide the magnetic signal, the conformable layer being sufficiently conformable to meet the inelastic deformation test; and (c) a sensor for passing over the traffic-bearing surface, said sensor comprising means for detecting the magnetic signal through said traffic-bearing surface.
Claim 14
Dependent Claim
12 words
The system of claim 10, wherein said magnetic article is substantially inelastic.
Claim 15
Dependent Claim
14 words
The system of claim 10, wherein said magnetic article is perforated along its length.
Claim 16
Dependent Claim
17 words
The system of claim 10, wherein said magnetic article comprises sections of alternating polarity along its length.
Claim 17
Dependent Claim
20 words
The system of claim 10, wherein said sensor is mounted on a vehicle adapted to travel over said traffic-bearing surface.
Claim 18
Dependent Claim
25 words
The system of claim 10, wherein said traffic-bearing surface comprises asphalt, and wherein said two layers are the outermost two layers of said traffic-bearing surface.
Claim 19
Dependent Claim
25 words
The system of claim 10, wherein said magnetic article further comprises a layer of pressure sensitive adhesive applied to a major surface of the article.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-12-28 | 2002-06-29 | 2002-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-28 | 2006-06-29 | 2006-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-28 | 2010-06-29 | 2010-12-29 | $7700.00 | Window Closed / Lapsed |