US3569927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reverse operation warning signal system
Assignee: Individual
•
Filing: 1967-06-16
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Granted: 1971-03-09
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Expires: 1987-06-16
Abstract
Abstract A warning signal system effective upon reverse movement of a vehicle. A sensor is mounted for free arcuate movement upon and independently of a shaft which is coupled to the speedometer cable of the vehicle for rotation therewith. Magnetic coupler means associated with the shaft effects arcuate movement of the sensor between two stop positions in accordance with the direction of motion of the vehicle. Movement of the sensor corresponding to reverse movement of the vehicle effects energization of an electrical circuit which operates a warning device. The circuit includes means for varying the nature of the warning as well as means to return the sensor to a circuitdeenergizing position, and from which latter the sensor immediately returns under magnetic coupling if reverse movement of the vehicle continues, thereby reenergizing the warning signal circuit.
Inventors
- 👤 Jay Milton Guyton
- 👤 John E Williams Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:56
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/02; B60Q1/22
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
202 words
A device for signalling rotational movement in a first direction of mechanism capable of rotating in first and second directions, comprising: a sensing unit assembly, a sensor element mounted in said assembly for limited rotational movement in first and second directions, said sensing unit assembly having means for coupling said sensor element to said rotatable mechanism such that rotation of said mechanism in said first direction imparts rotational movement to said sensor element in said first direction, an electrical circuit including a signal device for effecting a signal when said circuit is energized, switch means carried by said sensing unit assembly and responsive to rotative movement of said sensor element in said first direction for energizing said circuit, and responsive to rotative movement of said sensor element in said second direction for deenergizing said circuit, sensor element moving means carried by said sensing unit assembly and operable to engage and move said sensor element in said second direciton, means in said electrical circuit for operating said sensor element moving means when said circuit is energized, and, time delay means associated with said electrical circuit for maintaining energization thereof for a predetermined limited time following deenergization-initiating sensor element movement in said second direction.
Claim 2
Independent Claim
202 words
A device for signalling rotational movement in a first direction of mechanism capable of rotating in first and second directions, comprising: a sensing unit assembly, a sensor element mounted in said assembly for limited rotational movement in first and second directions, said sensing unit assembly having means for coupling said sensor element to said rotatable mechanism such that rotation of said mechanism in said first direction imparts rotational movement to said sensor element in said first direction, an electrical circuit including a signal device for effecting a signal when said circuit is energized, switch means carried by said sensing unit assembly and responsive to rotative movement of said sensor element in said first direction for energizing said circuit, and responsive to rotative movement of said sensor element in said second direction for deenergizing said circuit, sensor element moving means carried by said sensing unit assembly and operable to engage and move said sensor element in said second direciton, means in said electrical circuit for operating said sensor element moving means when said circuit is energized, and, time delay means associated with said electrical circuit for maintaining energization thereof for a predetermined limited time following deenergization-initiating sensor element movement in said second direction.
Claim 3
Dependent Claim
45 words
The device of claim 1 wherein said electrical circuit includes means for operating said signal device in a first manner and means for operating said signal device in a second manner, said time delay means energizing said operating means successively when said circuit is energized.
Claim 4
Dependent Claim
39 words
The device of claim 2 wherein said several operating means include a multivibrator circuit portion having means to vary the capacitative feedback therein during functioning thereof to alter the nature of the warning signal effected by said electrical circuit.
Claim 5
Dependent Claim
122 words
The device of claim 1 wherein: said coupling means includes a shaft rotatably mounted in said sensing unit assembly, said shaft having a member fixedly mounted thereon and having said sensor element carried thereby for free arcuate movement relative to said shaft; stop means limiting arcuate movement of said sensor element about said shaft in either direction, and, means magnetically coupling said member and said sensor element to effect arcuate movement of said sensor element within limits of said stop means; and whereby rotation of said mechanism in said first direction results in a corresponding rotation of said shaft and said member, and thereby through said magnetic coupling to effect limited arcuate movement of said sensor element to energize said electrical circuit.
Claim 6
Dependent Claim
46 words
The device of claim 1 further including in combination said mechanism with which said sensing unit assembly is cooperatively associated and comprising a rotatable element of a motor vehicle whose said first and second directions of rotation are respectively responsive to reverse or forward vehicle movement.
Claim 7
Dependent Claim
21 words
The device of claim 5, wherein said vehicle rotatable element comprises a speedometer cable to which said coupling means is connected.
Claim 8
Dependent Claim
170 words
A sensing unit for signalling backing up movement of a vehicle comprising: a sensing unit housing; a shaft mounted for rotation in said housing having means for connection to a vehicle part which rotates in opposite directions in synchronism with forward and reverse movements of said vehicle; a first member fixed to said shaft for rotation therewith; a second member mounted on said shaft for arcuate movement thereon; means magnetically coupling said first and second members; a circuit-actuating element fixed on said second member; a forward direction stop and a reverse direction stop on said housing defining opposite ends of the arcuate path of said member for limiting arcuate movement thereof; an electrical circuit including a warning signal device; said electrical circuit being energized in response to motion of said circuit-actuating element towards said reverse stop; and an actuator responsive to circuit energization for engaging and moving said second member toward said forward stop thereby to deenergize said circuit and free said sensor for repeat movement toward said reverse stop.
Claim 9
Dependent Claim
170 words
A sensing unit for signalling backing up movement of a vehicle comprising: a sensing unit housing; a shaft mounted for rotation in said housing having means for connection to a vehicle part which rotates in opposite directions in synchronism with forward and reverse movements of said vehicle; a first member fixed to said shaft for rotation therewith; a second member mounted on said shaft for arcuate movement thereon; means magnetically coupling said first and second members; a circuit-actuating element fixed on said second member; a forward direction stop and a reverse direction stop on said housing defining opposite ends of the arcuate path of said member for limiting arcuate movement thereof; an electrical circuit including a warning signal device; said electrical circuit being energized in response to motion of said circuit-actuating element towards said reverse stop; and an actuator responsive to circuit energization for engaging and moving said second member toward said forward stop thereby to deenergize said circuit and free said sensor for repeat movement toward said reverse stop.
Claim 10
Dependent Claim
57 words
The device oF claim 7, wherein said actuator comprises an electromagnet in said housing adjacent said stops, said electromagnet having an arm controlled thereby and mounted for movement to engage said second member for urging the same away from said reverse stop when said electromagnet is energized, said electromagnet being energized upon energization of said electrical circuit.
Claim 11
Dependent Claim
31 words
The sensing unit of claim 8, wherein said electrical circuit includes means for maintaining said circuit energized for a predetermined time following removal of said sensor element from said reverse stop.
Claim 12
Dependent Claim
48 words
The device of claim 8 wherein said electrical circuit includes means for operating said signal device in a first manner and means for operating said signal device in a second manner, and timing means in said circuit for energizing said operating means successively when said circuit is energized.
Claim 13
Dependent Claim
46 words
The sensing unit of claim 7, wherein said electrical circuit includes a multivibrator circuit portion for operating the warning signal device, and including means to vary the capacitative feedback therein so as to alter the nature of the warning signal emitted by said warning signal device.
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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) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |