Cleaning and liquid contact with solids – Apparatus – Automatic controls
Patent
1977-01-21
1978-09-12
Bleutge, Robert L.
Cleaning and liquid contact with solids
Apparatus
Automatic controls
134143, 134184, B08B 304, B08B 312
Patent
active
041129555
ABSTRACT:
A novel coin operated ultrasonic device for cleaning jewelry and other small household items is described. The device is designed for usage in public places and has a cleaning chamber, a cover for the chamber and a basket. When not in use, the cover remains in a locked position by an electromagnetic latch which is responsive to coin actuated circuitry. Upon insertion of a coin, power is supplied to the device for a given period of time. The power supplied causes the electromagnetic latch to become activated thereby permitting the cover to be opened. A hook is attached to the underside of the cover and is designed to suspend a workpiece such as a ring, necklace or bracelet in a cleaning solution disposed in the cleaning chamber while the cover is closed. A porous basket is situated within the chamber to insure that the workpiece is retrievable from the cleaning liquid in the event it should become disengaged from the hook. The ultrasonic cleaning circuitry is operated for a pre-set period responsive to the insertion of a coin into the device which permits power to be supplied to the circuitry for the given period.
REFERENCES:
patent: 424894 (1890-04-01), Murphey
patent: 2627276 (1953-02-01), Eggleton
patent: 2888939 (1959-06-01), Nitsche
patent: 2896649 (1959-07-01), Faidley
patent: 2974070 (1961-03-01), Van Dongeren
patent: 3068875 (1962-12-01), Lovercheck
patent: 3099991 (1963-08-01), Pion et al.
patent: 3101089 (1963-08-01), Brown et al.
Bleutge Robert L.
Denson Fred L.
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