Dispensing – Automatic control – Motor control
Patent
1994-08-29
1996-04-16
Kaufman, Joseph A.
Dispensing
Automatic control
Motor control
4605, 4903, 2221812, 222333, 222386, B67D 508
Patent
active
055074138
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 tubular body is 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 movable blocking member is provided adjacent to said closed rear portion and is movable to block and unblock the through-hole so as to control the flow of the 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. A driving unit is activated by a detecting unit upon detection of a target. The shaft portion of the plunger is coupled eccentrically to the driving unit so that activation of the driving unit results in reciprocal linear movement of the piston within the tubular body to dispense a predetermined amount of the liquid soap through the soap outlet. A switch unit is activated when the piston of the plunger completes one cycle of the reciprocal linear movement and deactivates the driving unit when activated.
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patent: 5301852 (1994-04-01), Mancini
patent: 5344047 (1994-09-01), Chen
Kaufman Joseph A.
Shih Kong Inc.
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