Patent US5315865A successfully refreshed from Google Patents.
US5315865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitive turn angle indicator
Assignee: Borg Instruments AG
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Filing: 1992-07-08
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Granted: 1994-05-31
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Expires: 2012-07-08
Abstract
Abstract A turn angle indicator or angular displacement indicator and, more particularly, relates to a capacitive turn angle indicator, especially a positioning sensor for a flap or throttle valve, including a supporting plate fastened to the apparatus at a close narrow distance in front of a further supporting plate which is rotatable planar-parallel relative thereto and which is utilized for a mutually oppositely located narrow spoke or sector-shaped electrode pattern, and with a bearing structure for the rotatable supporting plate and which is fastened to the apparatus. The supporting plates are guided relative to each other through the intermediary of compressively-loaded distance spacers which are arranged in the region of the outer edges of the plates which extend in parallel with the axis of rotation of the rotatable plate.
Inventors
- 👤 Rudiger Hornfeck
- 👤 Klaus Bar
- 👤 Josef Nagler
- 👤 Manfred Barth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:27
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/30; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/24; G01D5/241; G01D5/2412; G01D5/2415
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
95 words
Capacitive angular displacement or turn angle indicator, comprising a stationary supporting plate fastened to an apparatus; a movable supporting plate which is rotatable in plan-parallel relationship with said stationary supporting plate being a close spacing therefrom, said plates including oppositely located narrow sector-shaped electrode pattern; a bearing means for the rotatable supporting plate being fastened to the apparatus; and compressively-stressed spacer retainer means in the region of the outer rims of said supporting plates and extending in parallel with the axis of rotation for said movable supporting plate guiding said plates relative to each other.
Claim 2
Dependent Claim
95 words
Capacitive angular displacement or turn angle indicator, comprising a stationary supporting plate fastened to an apparatus; a movable supporting plate which is rotatable in plan-parallel relationship with said stationary supporting plate being a close spacing therefrom, said plates including oppositely located narrow sector-shaped electrode pattern; a bearing means for the rotatable supporting plate being fastened to the apparatus; and compressively-stressed spacer retainer means in the region of the outer rims of said supporting plates and extending in parallel with the axis of rotation for said movable supporting plate guiding said plates relative to each other.
Claim 3
Dependent Claim
22 words
An indicator as claimed in claim 1, wherein said spacer retainer means comprises a bearing spacer ring located intermediate said supporting plates.
Claim 4
Dependent Claim
31 words
An indicator as claimed in claim 2, wherein the space between said supporting plates within the confines of the spacer ring are filled with a dielectric medium serving as a lubricant.
Claim 5
Dependent Claim
22 words
An indicator as claimed in claim 1, wherein said spacer retainer means comprises a foil which is arranged intermediate the carrier plates.
Claim 6
Dependent Claim
31 words
An indicator as claimed in claim 1, wherein said spacer retainer means comprises roller members arranged in the edge region of said plates either directly or indirectly between the supporting plates.
Claim 7
Dependent Claim
17 words
An indicator as claimed in claim 5, wherein the roller members are radially guided within running grooves.
Claim 8
Dependent Claim
41 words
An indicator as claimed in claim 1, wherein radial friction or roller bearing means offset from the radial position of the spacer retainer means towards the center of said indicator support a rotor which is equipped with said rotatable supporting plate.
Claim 9
Dependent Claim
23 words
An indicator as claimed in claim 1, wherein a combined radial-axial roller bearing is radially outwardly offset relative to the axis of rotation.
Claim 10
Dependent Claim
25 words
An indicator as claimed in claim 8, wherein the combined radial-axial roller bearing is configured as a grooved-tapered ball bearing having a minimal axial play.
Claim 11
Dependent Claim
46 words
An indicator as claimed in claim 1, wherein one of the two supporting plates which are supported against each other has a surface configuration forming said spacer retainer means such that the required spacing between said plates is directly implemented through the application of a force.
Claim 12
Dependent Claim
16 words
An indicator as claimed in claim 1, mounted as a setting sensor for a flap valve.
Claim 13
Dependent Claim
16 words
An indicator as claimed in claim 1, mounted as a setting sensor for a throttle valve.
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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) | 1997-05-30 | 1997-11-29 | 1998-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-30 | 2001-11-29 | 2002-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-30 | 2005-11-29 | 2006-05-31 | $7700.00 | Window Closed / Lapsed |