US4383239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detector for detecting the passage of heavy objects on a roadway
Assignee: GENERALE D'AUTOMATISME Cie SA
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Filing: 1981-07-28
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Granted: 1983-05-10
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Expires: 2001-07-28
Abstract
Abstract A detector for detecting the passage of heavy objects on a roadway, wherein the detector is an elongate strip in the form of nested channel-section members, said members comprising, from the outside towards the inside a first channel section bar (1) made of a strong material; a second channel section bar (2) made of a shock-absorbing material embedded in the channel of said first bar; a third channel section bar (3) made of a strong material embedded in the channel of said second bar; and a sensor (4) embedded in the channel of said third bar.
Inventors
- 👤 Richard C. Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:16
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/01; G08G1/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
97 words
A detector mountable in a roadway groove for detecting the passage of heavy objects traversing said roadway, said detector comprising an elongate strip in the form of nested channel-section members, said members comprising, from the outside member towards the inside: a first channel section bar made of a strong material; a second channel section bar made of a shock-absorbing material embedded in the channel of said first bar; a third channel section bar made of a strong material embedded in the channel of said second bar; and a sensor embedded in the channel of said third bar.
Claim 2
Dependent Claim
97 words
A detector mountable in a roadway groove for detecting the passage of heavy objects traversing said roadway, said detector comprising an elongate strip in the form of nested channel-section members, said members comprising, from the outside member towards the inside: a first channel section bar made of a strong material; a second channel section bar made of a shock-absorbing material embedded in the channel of said first bar; a third channel section bar made of a strong material embedded in the channel of said second bar; and a sensor embedded in the channel of said third bar.
Claim 3
Dependent Claim
18 words
A detector according to claim 1 wherein said second bar protrudes beyond the flanges of said first bar.
Claim 4
Independent Claim
162 words
A method of installing a detector for detecting the passage of heavy objects traversing a roadway, said method comprising the following steps: cutting a groove within said roadway; pouring adhesive resin into said groove; positioning a detector comprising an elongated strip in the form of nested channel section members within said groove with the outside channel-section member in contact with the adhesive resin and with said nested channel-section members comprising from the outside member towards the inside; a first channel-section bar made of a strong material; a second channel-section bar made of a shock-absorbing material embedded in the channel of said first bar; a third channel section bar made of a strong material embedded in the channel of said second bar; and a long thin piezoelectric type sensor disposed in the channel of said third bar; and filling the remainder of the groove with additional adhesive resin and turning down the excess resin over the detector and over edges of the groove.
Claim 5
Independent Claim
162 words
A method of installing a detector for detecting the passage of heavy objects traversing a roadway, said method comprising the following steps: cutting a groove within said roadway; pouring adhesive resin into said groove; positioning a detector comprising an elongated strip in the form of nested channel section members within said groove with the outside channel-section member in contact with the adhesive resin and with said nested channel-section members comprising from the outside member towards the inside; a first channel-section bar made of a strong material; a second channel-section bar made of a shock-absorbing material embedded in the channel of said first bar; a third channel section bar made of a strong material embedded in the channel of said second bar; and a long thin piezoelectric type sensor disposed in the channel of said third bar; and filling the remainder of the groove with additional adhesive resin and turning down the excess resin over the detector and over edges of the groove.
References Cited (Backward Citations)
US3105952A
Cited
GB1209506A
Cited
US3750125A
Cited
FR2291559A1
Cited
FR2373784A1
Cited
GB2003635B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-09 | 1986-11-08 | 1987-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-09 | 1990-11-08 | 1991-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-09 | 1994-11-08 | 1995-05-10 | $7700.00 | Window Closed / Lapsed |