Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1977-08-12
1978-08-01
Roberts, Edward L.
Brushing, scrubbing, and general cleaning
Machines
Brushing
15 97R, 173168, 418266, A46B 1306
Patent
active
041033817
ABSTRACT:
A hydraulic motor has a sliding-vane circular rotor disposed in a substantially elliptically cylindrical rotor chamber formed in a body to which the rotor is rotatably mounted so as to define a pair of diametrically opposed arcuate work cavities. Working fluid is introduced under pressure to each of the cavities via an inlet port, and spent working liquid is withdrawn from each cavity via an exit port. Each exit port is displaced angularly from the inlet port in the direction of rotation of the rotor. The rotor carries a sufficient number of radially movable, spring biased vanes, which are slidably engageable with the walls of the chamber, that at least one vane is always disposed in cavity-dividing position in each cavity for application thereto of pressure of liquid in the cavity between the vane and the inlet port. Working liquid pressure is applied to the vane to urge the vane toward the outlet port and to turn the rotor about an axis of rotation thereof. Such a motor is characterized in that the body defines a pair of annular spaces concentrically of the rotor chamber at axially displaced locations in the body adjacent the corresponding opposite axially spaced ends of the rotor chamber. The motor comprises means for supplying working liquid to one of the spaces. The inlet ports communicate from the one space to the respective cavities. The outlet ports communicate from the respective cavities to the other spaces. Liquid is discharged from the other space substantially parallel to the axis of the body.
REFERENCES:
patent: 2330565 (1943-09-01), Eckart
patent: 2382591 (1945-08-01), Warren
patent: 2395092 (1946-02-01), Bertoglio
Pedersen Tor Jan
Schulz Otto W.
Michaelson Randolph C. H
Roberts Edward L.
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