초록

An alarm system to warn those pumping fuel into remote tanks that the fuel level is at the top of the tank, and thus prevent overflowing. This system is particularly useful for filling tanks in boats.

대표청구항 ▼

[ What is claimed as new and what it is desired to secure by Letters Patent of the United States is:] [1.] A retrofit overflow alarm system for signaling that the level of a flammable liquid in a remote tank has reached a preselected level to prevent spillage thereof, the system comprising a magneti

[ What is claimed as new and what it is desired to secure by Letters Patent of the United States is:] [1.] A retrofit overflow alarm system for signaling that the level of a flammable liquid in a remote tank has reached a preselected level to prevent spillage thereof, the system comprising a magnetic switch and a float means attached to said magnetic switch in an electric circuit including an alarm means, a power source, and said magnetic switch; said float means and said magnetic switch being suspended inside said tank through an opening in a top horizontal wall of said tank, a retainer plate, a liquid proof housing for said switch for retrofitting and extending through said opening of said tank; said housing having an outer portion extending outwardly of said wall and an inner portion within said tank, said housing having an outwardly disposed flange larger than said opening and extending laterally of said opening and located outwardly of said tank and being clamped to said wall by said retainer plate attached to and located outwardly of said tank and being clamped to said wall by said retainer plate attached to and located outwardly of said wall by screws piercing said plate and said wall, a single flexible flammable liquid resistant liquid seal suitable for use in a flammable environment surrounding said housing inwardly of said flange and pressed between said plate and said flange and outwardly of said wall of said tank.