Registers – Platform operated – Platform actuated traffic counters
Patent
1977-02-16
1978-10-17
Thesz, Joseph M.
Registers
Platform operated
Platform actuated traffic counters
235 92CT, 235 92R, 340 1L, 417 36, G06M 302, G01S 966
Patent
active
041210948
ABSTRACT:
An electronic system for determining, indicating and regulating the level of semi-solid matter, such as sludge, in a fluid medium. The system produces and directs ultrasonic signals toward the matter, and the reflected signals are used to compute signal transit time and thus indicate incremental sludge levels. An output signal is produced when the matter reaches a preset level, to activate a pump and thus regulate the sludge level.
REFERENCES:
patent: 2746480 (1956-05-01), Hildyard
patent: 3486377 (1969-12-01), Franchi
patent: 3965983 (1976-06-01), Watson
patent: 4000650 (1977-01-01), Snyder
DiVito Ronald J.
Steck Howard A.
Driomi, Inc.
Heise Robert H.
Kowalik John J.
Thesz Joseph M.
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