US5001940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyro for detecting signals along two axes
Assignee: Aisin Corp
•
Filing: 1989-11-08
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Granted: 1991-03-26
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Expires: 2009-11-08
Abstract
Abstract A gyro comprises a support member and a rod member supported by the support member. A vibrator attached to the rod member has two pairs of vibrating members projecting at right angles to the rod member. A driving mechanism is attached to the rod member and includes piezo electric devices for generating vibrations. A detector is arranged for detecting strains in the vibrating members of the vibrator.
Inventors
- 👤 Naoki Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:21
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/04; G01C19/28; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1261; Y10T74/1275
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
145 words
A gyro comprising: a support member, a rod member supported by said support member and defining an axis, a vibrator attached to said rod member and including two pairs of vibrating members projecting at right angles to said rod member, said vibrator including first and second surfaces, said first surface facing in a first axial direction, and said second surface facing in an opposite second axial direction, driving means attached to said rod member and engaging said first surface of said vibrator and including piezo electric devices for generating vibrations which are transmitted to said vibrator, and detecting means arranged for detecting strains in said vibrating member of said vibrator, said detecting means being attached to said rod member and engaging said second surface of said vibrator coaxially relative to said driving means so that vibrations of said vibrator are detected by said detecting means.
Claim 2
Dependent Claim
145 words
A gyro comprising: a support member, a rod member supported by said support member and defining an axis, a vibrator attached to said rod member and including two pairs of vibrating members projecting at right angles to said rod member, said vibrator including first and second surfaces, said first surface facing in a first axial direction, and said second surface facing in an opposite second axial direction, driving means attached to said rod member and engaging said first surface of said vibrator and including piezo electric devices for generating vibrations which are transmitted to said vibrator, and detecting means arranged for detecting strains in said vibrating member of said vibrator, said detecting means being attached to said rod member and engaging said second surface of said vibrator coaxially relative to said driving means so that vibrations of said vibrator are detected by said detecting means.
Claim 3
Dependent Claim
42 words
A gyro in accordance with claim 1, wherein said driving means includes a plurality of piezo electric devices shaped in an arc to define together a circular plate and a plurality of said circular plates arranged to define a cylindrical driving means.
Claim 4
Dependent Claim
29 words
A gyro in accordance with claim 1 further comprising an electric circuit for supplying electric power to said driving means and for receiving a signal from said detecting means.
Claim 5
Dependent Claim
35 words
A gyro in accordance with claim 3, said detector including piezo electric devices attached to said rod member and connected to said electric circuit so that a signal from said detector defines a feedback signal.
Claim 6
Dependent Claim
45 words
A gyro according to claim 1 wherein said vibrator includes piezo electric devices connected to at least one of said first and second surfaces, said piezo electric devices being spaced from said detecting means in a direction oriented generally radially with reference to said axis.
Claim 7
Dependent Claim
99 words
A gyro comprising: a support member, a rod member supported by said support member, a vibrator attached to said rod member and including two pairs of vibrating members projecting at right angles to said rod member, driving means attached to said rod member and including piezo electric devices for generating vibrations, said driving means including a plurality of piezo electric devices shaped in an arc to define together a circular plate, and a plurality of said circular plates arranged to define a cylindrical driving means, and detecting means arranged for detecting strains in said vibrating members of said vibrator.
Claim 8
Dependent Claim
99 words
A gyro comprising: a support member, a rod member supported by said support member, a vibrator attached to said rod member and including two pairs of vibrating members projecting at right angles to said rod member, driving means attached to said rod member and including piezo electric devices for generating vibrations, said driving means including a plurality of piezo electric devices shaped in an arc to define together a circular plate, and a plurality of said circular plates arranged to define a cylindrical driving means, and detecting means arranged for detecting strains in said vibrating members of said vibrator.
Claim 9
Dependent Claim
29 words
A gyro in accordance with claim 6 further comprising an electric circuit for supplying electric power to said driving means and for receiving a signal from said detecting means.
Claim 10
Dependent Claim
35 words
A gyro in accordance with claim 7, said detector including piezo electric devices attached to said rod member and connected to said electric circuit so that a signal from said detector defines a feedback signal.
References Cited (Backward Citations)
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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) | 1994-03-25 | 1994-09-24 | 1995-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-25 | 1998-09-24 | 1999-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-25 | 2002-09-24 | 2003-03-26 | $7700.00 | Window Closed / Lapsed |