Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1993-01-14
1994-02-01
Williams, Hezron E.
Communications: electrical
Condition responsive indicating system
Specific condition
73 405R, G01M 328
Patent
active
052835529
ABSTRACT:
The invention provides instrumentation and control of the water plumbing system of a recreational vehicle, marine vessel or other such mobile self-contained environment. In addition to indicating externally supplied water pressure, typically from park or dock pressurized hook-ups, either a leak or an excessive pressure condition is detected, to which the device responds by energizing an appropriate alarm and performing safety functions. In the event of a leak, the onboard water pump is disabled and the external water supply is diverted from the vehicle plumbing and dumped to the onboard fresh water supply tank which is vented, thereby allowing overflow to the exterior of the vehicle instead of the interior. In the event of the external water pressure exceeding a safe allowable value the same dumping action is initiated to protect the plumbing system, or alternatively the device can provide for isolating the plumbing system from this external over-pressure. Utilizing instrumentation which typically already exists, this dumping action can also be initiated by the user to test the safety actuation and to automatically fill a fresh water tank to a variety of selectable levels, either from a central control panel or a remote location.
REFERENCES:
patent: 4916437 (1990-04-01), Gazzaz
patent: 5187973 (1993-02-01), Kunze et al.
Roskos Joseph W.
Williams Hezron E.
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