US4996511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-sensitive resistance element
Assignee: Momentive Performance Materials Japan LLC
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Filing: 1989-05-04
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Granted: 1991-02-26
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Expires: 2009-05-04
Abstract
Abstract A pressure-sensitive resistance element comprising a first contact electrode formed on a first electrically insulating base plate, a second contact electrode formed on a second electrically insulating base plate disposed facing the first contact electrode, a first and/or a second pressure-sensitive electrically conductive layer formed on the whole surface of at least one of the first and second contact electrode regions, and a first and/or second pressure-sensitive electrically conduct pattern formed on at least one of the pressure-sensitive electrically conductive layer and the contact electrode having no pressure-sensitive electrically conductive layer thereon.
Inventors
- 👤 Kazuhiro Ohkawa
- 👤 Taro Yamazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:33
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/10; G; G01; G01L; G01L1/00; G01L1/20; G01L1/205
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
91 words
A pressure-sensitive resistance element comprising a first contact electrode formed on a first electrically insulating base plate, a second contact electrode formed on a second electrically insulating base plate disposed facing the first contact electrode, a pressure-sensitive electrically conductive layer formed on the whole surface of at least one of the first and second contact electrode regions, and a pressure-sensitive electrically conductive pattern formed on at least one of the pressure-sensitive electrically conductive layers or the pressure-sensitive electrically conductive layer and the contact electrode having no pressure-sensitive electrically conductive layer thereon.
Claim 2
Dependent Claim
91 words
A pressure-sensitive resistance element comprising a first contact electrode formed on a first electrically insulating base plate, a second contact electrode formed on a second electrically insulating base plate disposed facing the first contact electrode, a pressure-sensitive electrically conductive layer formed on the whole surface of at least one of the first and second contact electrode regions, and a pressure-sensitive electrically conductive pattern formed on at least one of the pressure-sensitive electrically conductive layers or the pressure-sensitive electrically conductive layer and the contact electrode having no pressure-sensitive electrically conductive layer thereon.
Claim 3
Dependent Claim
24 words
The pressure-sensitive resistance element as claimed in claim 1, wherein the form of the pressure-sensitive electrically conductive pattern is a stripe, lattice or dot.
Claim 4
Dependent Claim
70 words
The pressure-sensitive resistance element as claimed in claim 1, wherein a stripe-form pressure-sensitive electrically conductive pattern is formed on the first contact electrode or the first pressure-sensitive electrically conductive layer and a stripe-form pressure-sensitive electrically conductive pattern is formed on the second contact electrode or the second pressure-sensitive electrically conductive layer, said patterns being disposed such that they are in a crossing relation with each other at a right angle.
Claim 5
Dependent Claim
23 words
The pressure-sensitive resistance element as claimed in claim 1, wherein the form of the pressure-sensitive electrically conductive pattern is a plurality of stripes.
Claim 6
Dependent Claim
48 words
The pressure-sensitive resistance element as claimed in claim 4, wherein said stripes have a line width of from 0.05 mm to 3 mm, the distance between the stripes is from 0.1 mm to 50 mm and the thickness of the stripes if from 5 μm to 100 μm.
Claim 7
Dependent Claim
23 words
The pressure-sensitive resistance element as claimed in claim 1, wherein the form of the pressure-sensitive electrically conductive pattern is a plurality of dots.
Claim 8
Dependent Claim
46 words
The pressure-sensitive resistance element as claimed in claim 6, wherein the diameter of the dots is from 0.05 mm to 3 mm, the distance between dots is from 0.1 mm to 50 mm and the thickness of the dots is from 5 μm to 100 μm.
Claim 9
Dependent Claim
21 words
The pressure-sensitive resistance element as claimed in claim 1, wherein the form of the pressure-sensitive electrically conductive pattern is a lattice.
Claim 10
Dependent Claim
48 words
The pressure-sensitive resistance element as claimed in claim 8, wherein the lattice has a line width of from 0.05 mm to 3 mm, the distance between lattice lines is from 0.1 mm to 50 mm and the thickness of the lattice is from 5 μm to 100 μm.
Claim 11
Dependent Claim
63 words
The pressure-sensitive resistance element as claimed in claim 1, wherein the first contact electrode ha a pressure-sensitive electrically conductive layer which as a stripe-form pressure-sensitive electrically conductive pattern thereon and the second contact electrode has a stripe-form electrically conductive pattern thereon, which stripe-form electrically conductive patterns are disposed such that they are in a crossing relation with each other at a right angle.
Claim 12
Dependent Claim
40 words
The pressure-sensitive resistance element as claimed in claim 1, wherein the first contact electrode has one pressure-sensitive electrically conductive layer thereon without a pressure-sensitive electrically conductive pattern and the second contact electrode has a stripe-form pressure-sensitive electrically conductive pattern thereon.
Claim 13
Dependent Claim
41 words
The pressure-sensitive resistance element as claimed in claim 1, wherein the first contact electrode has a pressure-sensitive electrically conductive layer thereon without a pressure-sensitive electrically conductive pattern thereon and the second contact electrode has a lattice-form pressure-sensitive electrically conductive pattern thereon.
Claim 14
Dependent Claim
41 words
The pressure-sensitive resistance element as claimed in claim 1, wherein the first contact electrode has a pressure-sensitive electrically conductive layer thereon without a pressure-sensitive electrically conductive pattern thereon and the second contact electrode has a dot-form pressure-sensitive electrically conductive pattern thereon.
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) | 1994-02-25 | 1994-08-27 | 1995-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-25 | 1998-08-27 | 1999-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-25 | 2002-08-27 | 2003-02-26 | $7700.00 | Window Closed / Lapsed |