Patent US3743849A successfully refreshed from Google Patents.
US3743849A
Expired / Lapsed
US
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Apparatus for automatically disconnecting power circuit for vehicles due to impact
Assignee: Mitsuba Corp
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Filing: 1971-05-18
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Granted: 1973-07-03
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Expires: 1991-05-18
Abstract
Abstract In cases where any trouble occurs due to the collision, rear-end collision or the like of vehicles, particularly of automobiles, this apparatus is used to automatically disconnect the power circuit instantaneously by the impact force caused upon the trouble, further to automatically cut off the fuel circuit by means of a solenoid valve and the like to prevent fire from breaking out after the collision.
Inventors
- 👤 A Iwata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:04
CPC Classifications
B; B60; B60L; B60L3/00; B60L3/0007; B60L3/0015; B60K; B60K28/00; B60K28/10; B60K28/14; H; H01; H01H; H01H35/00; H01H35/14; H01H35/141; H01H35/143
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
130 words
An apparatus for automatically disconnecting a power circuit of vehicles due to impact comprising: a first circuit having connected in series a power source, a starter swtich, a first diode, a magnetic induction coil of a relay and an impact switch; a second circuit having connected in series said power source, an ignition switch, a movable iron piece opened and closed by the magnetic force of said magnetic induction coil and a load; and a second diode having one lead connected between said first diode and said magnetic induction coil of said first circuit and having its other lead connected between said movable iron piece and said load of said second circuit; said first and second diodes being connected so that current through one will not flow through the other.
Claim 2
Independent Claim
130 words
An apparatus for automatically disconnecting a power circuit of vehicles due to impact comprising: a first circuit having connected in series a power source, a starter swtich, a first diode, a magnetic induction coil of a relay and an impact switch; a second circuit having connected in series said power source, an ignition switch, a movable iron piece opened and closed by the magnetic force of said magnetic induction coil and a load; and a second diode having one lead connected between said first diode and said magnetic induction coil of said first circuit and having its other lead connected between said movable iron piece and said load of said second circuit; said first and second diodes being connected so that current through one will not flow through the other.
Claim 3
Dependent Claim
35 words
The apparatus for automatically disconnecting a power circuit of vehicles due to impact as defined in claim 1, wherein the first circuit and the second circuit are connected to each other through a pilot lamp.
Claim 4
Dependent Claim
57 words
The apparatus for automatically disconnecting a power circuit of vehicles due to impact as defined in claim 1, including a short switch having one lead connected between said ignition switch and said movable iron piece of said second circuit piece and having its other lead connected between said second diode and said load of said second circuit.
Claim 5
Dependent Claim
112 words
The apparatus for automatically disconnecting a power circuit of vehicles due to impact as defined in claim 1, wherein said impact switch comprises a stationary contactor whose center is cut out resting on a ring-shaped ferrite magnet, a spherical movable contactor is placed on said stationary contactor, a spring is interposed in a hole at the forward end of a pole screwed and secured in the hollow portion of said ferrite magnet through a magnet end plate in a freely advancing and retreating manner, a foRward end of said spring is constantly in contact with said spherical movable contactor and when an impact is applied, both are separated from each other instantaneously.
Claim 6
Dependent Claim
147 words
The apparatus for automatically disconnecting a power circuit of vehicles due to impact as defined in claim 1, wherein said impact switch comprises a stationary contactor whose center is cut out resting on a ringshaped ferrite magnet, a spherical movable contactor is placed on said stationary contactor, a pole being screwed and secured in the hollow portion of said ferrite magnet through a magnet end plate in a freely advancing and retreating manner, a forward end of said pole is in a predetermined spaced relationship to the spherical movable contactor, and a leaf spring which is reversible and ordinarily presses downward said spherical movable contactor through a contact at the center of said leaf spring but is reversed in accordance with the migration of the movable contactor when an impact more than a predetermined value is applied thereby to disconnect the contact from the spherical movable contactor.
Claim 7
Dependent Claim
172 words
The apparatus for automatically disconnecting a power circuit of vehicles due to impact as defined in claim 1, wherein said impact switch comprises a stationary contactor whose center is cut out resting on a ring-shaped ferrite magnet, a spherical movable contactor is placed on said stationary contactor, a pole being screwed and secured in the hollow portion of the ferrite magnet through a magnet end plate in a freely advancing and retreating manner, a forward end of said pole is in a predetermined spaced relationship to said spherical movable contactor, a leaf spring which is reversible and ordinarily presses downward said spherical movable contactor through a contact at the center of said leaf spring but is reversed in accordance with the migration of the movable contactor, said leaf spring having both ends curled in one direction and in a flat or arch shape in a free state, and said leaf spring being pressed and supported in an installating hole having a length slightly shorter than the free length between the curled portions.
References Cited (Backward Citations)
US3154168A
Cited
US3493701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |