Patent US3794971A successfully refreshed from Google Patents.
US3794971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle speed sensing device
Assignee: Aisin Corp
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Filing: 1972-08-25
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Granted: 1974-02-26
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Expires: 1992-08-25
Abstract
Abstract A speed sensing device for a vehicle comprising a governor means movable proportional to vehicle speed, a lever pivotally mounted on a housing of the device at one end thereof so as to oscillate in response to movement of the governor means, permanent magnet means secured to the other end of the lever and reed switching means secured to the housing and adapted for cooperating with the magnet means being displaced with the lever to thereby sense the vehicle speed.
Inventors
- 👤 T Hida
- 👤 N Sakakibara
- 👤 N Hashimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:28
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/50; B60Q1/54; G; G01; G01P; G01P1/00; G01P1/07; G01P1/08; G01P1/10; G01P3/00; G01P3/02; G01P3/16; G01P3/22
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
80 words
A vehicle speed sensing device for a vehicle comprising a housing, a governor means movable proportional to vehicle speed, a lever connected operatively to said governor means and movable thereby in one direction, spring means disposed so as to bias said lever against movement of said governor means, magnet means attached to said lever so as to be displaced therewith, and switching means secured to said housing and being actuated by said magnet means to thereby sense the vehicle speed.
Claim 2
Dependent Claim
80 words
A vehicle speed sensing device for a vehicle comprising a housing, a governor means movable proportional to vehicle speed, a lever connected operatively to said governor means and movable thereby in one direction, spring means disposed so as to bias said lever against movement of said governor means, magnet means attached to said lever so as to be displaced therewith, and switching means secured to said housing and being actuated by said magnet means to thereby sense the vehicle speed.
Claim 3
Dependent Claim
68 words
A vehicle speed sensing device as set forth in claim 1 wherein a shaft is rotatable in response to the vehicle speed and allows said governor means to rotate therewith, and an axially slidable sleeve member is supported on said shaft and is disposed between said governor means and said lever whereby said lever is arranged so as to engage said sleeve member displaced by said governor means.
Claim 4
Dependent Claim
20 words
A vehicle speed sensing device as set forth in claim 2 wherein said lever is of a fork shaped configuration.
Claim 5
Dependent Claim
42 words
A vehicle speed sensing device as set forth in claim 2 wherein said lever comprises one end portion pivotally mounted on said housing, an intermediate portion engaged said sleeve member and the other end portion to which said magnet means is secured.
Claim 6
Dependent Claim
40 words
A vehicle speed sensing device as set forth in claim 2 wherein said governor means comprises a pair of weights pivoted outwardly in proportion to the vehicle speed, said weights comprising radially inwardly extending arms engageable with said sleeve member.
Claim 7
Dependent Claim
36 words
A vehicle speed sensing device as set forth in claim 1 wherein said switching means comprises a housing and reed switching means accomodated within said housing of said switching means and actuated by said magnet means.
Claim 8
Dependent Claim
53 words
A vehicle speed sensing device as set forth in claim 6 wherein said housing of said switching means includes screw threads thereon which are threaded through said housing of said device whereby the position of said reed switching means relative to said magnet means will be varied by turning of said screw threads.
Claim 9
Dependent Claim
79 words
A vehicle speed sensing device as set forth in claim 1 wherein said magnet means includes a pair of permanent magnets and said switching means includes first and second reed switches actuated, respectively, by the corresponding one of said magnets, said first reed switch being actuated as the vehicle speed exceeds a first predetermined value and said second reed switch being actuateD as the vehicle speed exceeds a second predetermined value which is larger than said first predetermined value.
Claim 10
Dependent Claim
37 words
A vehicle speed sensing device as set forth in claim 8 wherein said first reed switch is connected electrically to an alarm device and said second reed switch is connected electrically to a vehicle speed limiting mechanism.
Claim 11
Dependent Claim
39 words
A vehicle speed sensing device as set forth in claim 8 wherein one of said magnets is secured to one side of said lever and the other of said magnets is secured to the other side of said lever.
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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |