US5086785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Angular displacement sensors
Assignee: FREEDOM MULTIMEDIA LLC
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Filing: 1989-08-10
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Granted: 1992-02-11
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Expires: 2009-08-10
Abstract
Abstract A sensor for detecting angular displacement of an object. The sensor comprises a substrate for attachment to the object whose angular displacement is to be sensed and a sensing means attached to the substrate and connectable into an electric circuit. The electric circuit measures the resistance of the sensing means, which changes as a function of the angular displacement. Several embodiments are disclosed, including a conductive elastomer sensor, a conductive ink sensor, a sliding resistor sensor, a force sensitive resistor sensor and a conductive fluid sensor.
Inventors
- 👤 Christopher T. Gentile
- 👤 Michael Wallace
- 👤 Timothy D. Avalon
- 👤 Scott Goodman
- 👤 Richard Fuller
- 👤 Tracy Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:05
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/45; A61B5/4528; A61B5/103; A61B5/11; A61B5/1126; A61B5/22; A61B5/224; A61B5/225; G; G01; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/16; G01D5/165; G01L; G01L1/00; G01L1/20; G01L9/00; G01L9/0001; G01L9/0002; A61B5/1121
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
90 words
A sensor for detecting angular displacement of an object comprising: a substrate for attachment to the object whose angular displacement is to be sensed; sensing means attached to the substrate and connectable into an electric circuit, the sensing means comprising a material having an electrical resistance which changes as a function of the angular displacement, said material comprising an electrically conductive ink deposited on said substrate, said conductive ink comprising carbon particles in a binder and further comprising a solution of a first stretchable ink and a second brittle ink.
Claim 2
Dependent Claim
90 words
A sensor for detecting angular displacement of an object comprising: a substrate for attachment to the object whose angular displacement is to be sensed; sensing means attached to the substrate and connectable into an electric circuit, the sensing means comprising a material having an electrical resistance which changes as a function of the angular displacement, said material comprising an electrically conductive ink deposited on said substrate, said conductive ink comprising carbon particles in a binder and further comprising a solution of a first stretchable ink and a second brittle ink.
Claim 3
Dependent Claim
37 words
The sensor recited in claim 1, wherein said first and second inks are mixed in order to customize the sensor to an application, said first ink providing durability and said second ink providing a higher resistance range.
Claim 4
Dependent Claim
84 words
A sensor for detecting angular displacement of an object comprising: a substrate for attachment to the object whose angular displacement is to be sensed; sensing means attached to the substrate and connectable into an electric circuit, the sensing means comprising a material having an electrical resistance which changes as a function of the angular displacement, said material comprising an electrically conductive ink deposited on said substrate, and further comprising a highly conductive material deposited on the conductive ink in at least one selected area.
Claim 5
Dependent Claim
84 words
A sensor for detecting angular displacement of an object comprising: a substrate for attachment to the object whose angular displacement is to be sensed; sensing means attached to the substrate and connectable into an electric circuit, the sensing means comprising a material having an electrical resistance which changes as a function of the angular displacement, said material comprising an electrically conductive ink deposited on said substrate, and further comprising a highly conductive material deposited on the conductive ink in at least one selected area.
References Cited (Backward Citations)
US4444205A
Cited
US4745930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-10 | 1995-08-12 | 1996-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-10 | 1999-08-12 | 2000-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-10 | 2003-08-12 | 2004-02-11 | $7700.00 | Window Closed / Lapsed |