US3821699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depth sensor for boat trailers
Assignee: BOGATIN I
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Filing: 1972-11-17
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Granted: 1974-06-28
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Expires: 1992-11-17
Abstract
Abstract A depth sensor for boat trailers comprising a signaling device positionable within the interior of a towing vehicle, a source of current connected to said signaling device, a normally open switch between said signaling device and said source of current, and a switch closing circuit including electrodes mounted upon the trailer for current conduction therebetween when immersed in water to thereupon cause said signal to be energized.
Inventors
- 👤 L Marus
- 👤 J Abernathy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:11
CPC Classifications
G; G01; G01C; G01C13/00; G01C13/008; B; B60; B60P; B60P3/00; B60P3/06; B60P3/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
160 words
The combination with a trailer having at least one wheelsupporting axle, a towing vehicle to which said trailer is coupled, of a water depth sensor for indicating relative extent of immersion of a trailer in a body of water, said sensor comprising a pair of rigid, spaced-apart, rod-like electrodes, a mounting block constructed of dielectric material carried on said trailer, said electrodes being disposed upon said block in predetermined spaced-apart relationship and with their longitudinal axes substantially normal to the longitudinal axis of the trailer, said electrodes extending downwardly toward the trailer support surface and being spaced therefrom a predetermined distance, a signal device, a voltage source, a signal energizing circuit connecting said voltage source and said signal, a normally open latching switch provided in said signal energizing circuit, a triggering circuit connecting said electrodes and said latching switch whereby when said electrodes extend into water for current establishment said latching switch is closed and said signal device is energized.
Claim 2
Dependent Claim
160 words
The combination with a trailer having at least one wheelsupporting axle, a towing vehicle to which said trailer is coupled, of a water depth sensor for indicating relative extent of immersion of a trailer in a body of water, said sensor comprising a pair of rigid, spaced-apart, rod-like electrodes, a mounting block constructed of dielectric material carried on said trailer, said electrodes being disposed upon said block in predetermined spaced-apart relationship and with their longitudinal axes substantially normal to the longitudinal axis of the trailer, said electrodes extending downwardly toward the trailer support surface and being spaced therefrom a predetermined distance, a signal device, a voltage source, a signal energizing circuit connecting said voltage source and said signal, a normally open latching switch provided in said signal energizing circuit, a triggering circuit connecting said electrodes and said latching switch whereby when said electrodes extend into water for current establishment said latching switch is closed and said signal device is energized.
Claim 3
Dependent Claim
79 words
The combination with a trailer having at least one wheel-supporting axle, a towing vehicle to which said trailer is coupled, of a water depth sensor as defined in claim 1 and further characterized by said mounting block being carried upon said trailer axle, and means provided on said block for vertical adjustment of said electrodes to control the downward extension of the same toward said trailer support surface for affecting the juncture at which said signal device is energized.
Claim 4
Dependent Claim
77 words
The combination with a trailer having at least one wheel-supporting axle, a towing vehicle to which said trailer is coupled, of a water depth sensor as defined in claim 2 and further characterized by said signal device being a lamp located within said towing vehicle for informing the operator thereof as to the relative location of the trailer within water without the necessity of direct observation, said voltage source being a battery located within said towing vehicle.
Claim 5
Dependent Claim
84 words
The combination with a trailer having at least one wheel-supporting axle, a towing vehicle to which said trailer is coupled, of a water depth sensor as defined in claim 3 and further characterized by a multivibrator connected to said battery, said multivibrator having a pair of output terminals, said signal energizing circuit including leads connecting said output terminals of said multivibrator with said lamp, said normally open latching switch being a silicon controlled rectifier and having a gate lead provided witHin said triggering circuit.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |