Patent US5231879A successfully refreshed from Google Patents.
US5231879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor acceleration detecting apparatus
Assignee: Mitsubishi Electric Corp
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Filing: 1992-03-04
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Granted: 1993-08-03
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Expires: 2012-03-04
Abstract
Abstract The fixed end of an acceleration detection beam of a semiconductor acceleration detecting apparatus is mounted onto a board through a supporting base. A weight for increasing the sensitivity to acceleration is disposed on the free end of the acceleration detection beam. A limit stop for limiting excessive displacement of the weight in two directions surrounds part of the weight. Therefore, the displacement of the weight can be controlled with a high degree of accuracy. Resistance to impact is also improved.
Inventors
- 👤 Masahiro Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:27
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/12; G01P2015/0805; G01P2015/0822; G01P2015/0825; G01P2015/0828
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
124 words
A semiconductor acceleration detecting apparatus comprising: a support board; a deflectable acceleration detection beam having opposed first and second ends and including a groove between the first and second ends; a strain resistor disposed on the beam opposite the groove; a supporting base mounted on the board, the first end of the acceleration detection beam being mounted on the supporting base, the weight being displaced in response to acceleration of the apparatus; a weight mounted on the second end of the acceleration detection beam; and a limit stop mounted on the board surrounding and spaced from the weight when the apparatus is not subjected to an acceleration for limiting displacement of the weight in response to acceleration of the apparatus in two orthogonal directions.
Claim 2
Dependent Claim
124 words
A semiconductor acceleration detecting apparatus comprising: a support board; a deflectable acceleration detection beam having opposed first and second ends and including a groove between the first and second ends; a strain resistor disposed on the beam opposite the groove; a supporting base mounted on the board, the first end of the acceleration detection beam being mounted on the supporting base, the weight being displaced in response to acceleration of the apparatus; a weight mounted on the second end of the acceleration detection beam; and a limit stop mounted on the board surrounding and spaced from the weight when the apparatus is not subjected to an acceleration for limiting displacement of the weight in response to acceleration of the apparatus in two orthogonal directions.
Claim 3
Dependent Claim
107 words
A semiconductor acceleration detecting apparatus comprising: a support board; a deflectable cantilevered acceleration detection beam having opposed first and second ends; a supporting base mounted on the board, the first end of the cantilevered acceleration detection beam being mounted on the supporting base, the weight being displaced in response to acceleration of the apparatus; a weight mounted on the second end of the cantilevered acceleration detection beam; and a limit stop mounted on the board surrounding and spaced from the weight when the apparatus is not subjected to an acceleration for limiting displacement of the weight in response to acceleration of the apparatus in two orthogonal directions.
Claim 4
Dependent Claim
107 words
A semiconductor acceleration detecting apparatus comprising: a support board; a deflectable cantilevered acceleration detection beam having opposed first and second ends; a supporting base mounted on the board, the first end of the cantilevered acceleration detection beam being mounted on the supporting base, the weight being displaced in response to acceleration of the apparatus; a weight mounted on the second end of the cantilevered acceleration detection beam; and a limit stop mounted on the board surrounding and spaced from the weight when the apparatus is not subjected to an acceleration for limiting displacement of the weight in response to acceleration of the apparatus in two orthogonal directions.
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) | 1996-08-02 | 1997-02-01 | 1997-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-02 | 2001-02-01 | 2001-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-02 | 2005-02-01 | 2005-08-03 | $7700.00 | Window Closed / Lapsed |