US4595897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed sensor device
Assignee: Aisin Corp
•
Filing: 1984-01-13
•
Granted: 1986-06-17
•
Expires: 2004-01-13
Abstract
Abstract A magnetic sensing device which includes a reed switch installed in a housing of synthetic resin and electrically connected with an automobile body. The device further includes a metal plate member having a projection fitted into the housing, the reed switch being electrically connected with a control circuit at a first end thereof and which is electrically connected with the metal plate member at a second end thereof, and a mechanism for grounding current from the reed switch to a portion of an automobile body through the metal plate member.
Inventors
- 👤 Hiroyuki Amano
- 👤 Yukihisa Oda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:38
CPC Classifications
H; H01; H01H; H01H36/00; H01H36/0006; H01H36/0033; H01H1/00; H01H1/58
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
158 words
A magnetic sensing device utilizing a control circuit and which is operatively associated with a portion of an automobile body, comprising: permanent magnet means; detecting means for detecting a change of magnetic flux of said permanent magnet means applied thereto in response to rotational displacement of said permanent magnet means; a housing composed of synthetic resin; a holder member positioned in said housing and formed of an electrically conductive material; a metal plate member integrally fixed to said housing and having at least one projection extending therefrom into said housing; a terminal member connected between a first end of said holder member and said metal plate member; said detecting means having a first end thereof electrically connected with said control circuit and a second end thereof electrically connected with a second end of said holder member; and means for grounding current from said detecting means to said metal portion of said automobile body via said metal plate member.
Claim 2
Dependent Claim
158 words
A magnetic sensing device utilizing a control circuit and which is operatively associated with a portion of an automobile body, comprising: permanent magnet means; detecting means for detecting a change of magnetic flux of said permanent magnet means applied thereto in response to rotational displacement of said permanent magnet means; a housing composed of synthetic resin; a holder member positioned in said housing and formed of an electrically conductive material; a metal plate member integrally fixed to said housing and having at least one projection extending therefrom into said housing; a terminal member connected between a first end of said holder member and said metal plate member; said detecting means having a first end thereof electrically connected with said control circuit and a second end thereof electrically connected with a second end of said holder member; and means for grounding current from said detecting means to said metal portion of said automobile body via said metal plate member.
Claim 3
Dependent Claim
51 words
A device according to claim 1, wherein said means for grounding said current further comprises a circular flange portion extending from said metal plate member and a bolt fitted in said circular flange portion of said metal plate member for fixing said metal plate member to said portion of said automobile.
Claim 4
Dependent Claim
24 words
A device according to claim 2, wherein said grounding means further comprises a spring washer interposed between said bolt and said circular flange portion.
Claim 5
Dependent Claim
64 words
A device according to claim 1, wherein said means for grounding said current further comprises a circular flange portion extending from said metal plate member, a bolt fitted in said circular flange portion of said metal plate member for fixing said metal plate member to said portion of said automobile body and a spring washer interposed between said bolt and said circular flange portion.
Claim 6
Dependent Claim
18 words
A device according to claim 1, wherein said portion of said automobile body further comprises a transmission case.
References Cited (Backward Citations)
US1921273A
Cited
US3630347A
Cited
US4004271A
Cited
US4337652A
Cited
JPS57169678A
Cited
US4463312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-16 | 1989-12-16 | 1990-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-16 | 1993-12-16 | 1994-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-16 | 1997-12-16 | 1998-06-17 | $7700.00 | Window Closed / Lapsed |