Patent US4581677A successfully refreshed from Google Patents.
US4581677A
Expired / Lapsed
US
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Layered capacitive sensor for detecting loads and load variations thereon
Assignee: Individual
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Filing: 1984-03-09
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Granted: 1986-04-08
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Expires: 2004-03-09
Abstract
Abstract There is disclosed a layered capacitive sensor for detecting loads and load variations thereon comprising two outer protective layers, a first electrically conductive layer, a first electrically insulating layer, a second electrically conductive layer, a second electrically insulating layer, and a third electrically conductive layer, the several layers being supplied in roll or coil form and cut to the desired size. In particular the electrically conductive layers are made of a metal, while the insulating layers are made of yieldable expanded polyethylene.
Inventors
- 👤 Enzo Hruby
- 👤 Raffaello Vizzotto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:40
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/16; G01V1/20; G01V1/201; G01V1/208; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/24; G01D5/241; G01D5/2417; G01H; G01H11/00; G01H11/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A layered capacitive sensor for detecting loads and load variations thereon, comprising a layered structure including a first outer protective coating, a first electrically conductive layer, a first electrically insulating layer, a second electrically conductive layer, a second electrically insulating layer, a third electrically conductive layer and a second outer protective coating, said layer being effective to be supplied in roll or coil form and cut to the desired size, said electrically insulating layers being made of expanded yieldable polyethylene, and said electrically conductive layers being made of a metal and electrically connected to one another and provided for connection to the shield of an electric analyzer and processing device.
Claim 2
Dependent Claim
110 words
A layered capacitive sensor for detecting loads and load variations thereon, comprising a layered structure including a first outer protective coating, a first electrically conductive layer, a first electrically insulating layer, a second electrically conductive layer, a second electrically insulating layer, a third electrically conductive layer and a second outer protective coating, said layer being effective to be supplied in roll or coil form and cut to the desired size, said electrically insulating layers being made of expanded yieldable polyethylene, and said electrically conductive layers being made of a metal and electrically connected to one another and provided for connection to the shield of an electric analyzer and processing device.
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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) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |