Fluid handling – With casing – support – protector or static constructional... – Vehicle
Patent
1988-08-15
1989-11-07
Chambers, A. Michael
Fluid handling
With casing, support, protector or static constructional...
Vehicle
13735522, 13735526, 134166C, 134167C, 134168C, A62C 3500, B08B 300
Patent
active
048785172
ABSTRACT:
A method and apparatus provide for selective generation of pulses at water jets of a jet nozzle terminating a high pressure cleaning hose of a sewer cleaning machine. A ball valve is connected as a pressure bleeder to the high pressure side of the sewer cleaning machine pump and hence, the cleaning hose, for relieving pressure from the hose when the valve is open. A motor is connected to operate a rotatable element of the ball valve to automatically cycle the valve and generate a series of high pressure pulses at the water jets to thereby generate a hammering action to assist in penetration of blockages in a sewer being cleaned. The amplitude of the pulses is controlled by a second valve connected to the ball valve and the pulses preferably are generated at a frequency of approximately 3 hertz. The motor may be activated and deactivated by a blockage sensor which detects engagements of the nozzle with blockages formed by concentrations of refuse and debris within a sewer being cleaned.
REFERENCES:
patent: 3165109 (1965-01-01), Hammelmann
patent: 3522815 (1970-08-01), Prange
patent: 3585076 (1968-08-01), Prange
patent: 3600225 (1971-08-01), Parmelee
patent: 3774630 (1973-11-01), Prange
patent: 3910497 (1975-10-01), Manor
patent: 4234980 (1980-11-01), DiVito et al.
patent: 4540017 (1985-09-01), Prange
patent: 4576337 (1986-03-01), Post
patent: 4700422 (1987-10-01), Russell
Chambers A. Michael
Sewer Rodding Equipment Co.
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