Dispensing – Automatic control – Motor control
Patent
1993-10-08
1994-09-06
Kashnikow, Andres
Dispensing
Automatic control
Motor control
4605, 4903, 222 52, 222185, 222333, 222340, B67D 508
Patent
active
053440471
ABSTRACT:
An automatic liquid soap dispenser includes a liquid soap container which receives liquid soap therein and which has a bottom wall that is formed with an outlet port. A flow control unit includes a plunger and a tubular body secured to a bottom surface of the bottom wall such that a through-hole at a closed rear portion of the tubular body is aligned with the outlet port. The closed rear portion of the tubular body is further formed with an upright soap outlet adjacent to the through-hole. A ball valve unit controls the flow of liquid soap through the soap outlet. The plunger has a piston which extends fittingly and movably into the tubular body via an open front portion of the latter, and a flexible shaft portion connected to the piston. An actuating unit includes an infrared unit for detecting a target, a driving unit activated by the infrared unit upon detection of the target, and a driving gear driven rotatably by the driving unit. The shaft portion of the plunger is connected eccentrically to the driving gear so that rotation of the driving gear results in linear movement of the piston within the tubular body to dispense a predetermined amount of the liquid soap through the soap outlet. A contact switch is activated by the driving gear when the driving gear completes one revolution and deactivates the driving unit when activated.
REFERENCES:
patent: 2898009 (1959-08-01), Green
patent: 3089618 (1963-05-01), Forsyth
patent: 4722372 (1988-02-01), Hoffman et al.
patent: 4938384 (1990-07-01), Piolla et al.
patent: 4946070 (1990-08-01), Albert et al.
patent: 4967935 (1990-11-01), Celeste
patent: 5105992 (1992-04-01), Fender et al.
patent: 5215216 (1993-06-01), Van Marcke
patent: 5249718 (1993-10-01), Muderlak
Kashnikow Andres
Kaufman Joseph A.
Shih Kong Inc.
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