Dispensing – With lock or fastening seal – Plural
Patent
1989-03-06
1991-10-08
Olszewski, Robert P.
Dispensing
With lock or fastening seal
Plural
222327, B67D 532
Patent
active
050546554
ABSTRACT:
The dispensing apparatus receives and retains disposable cartridges, e.g., dual cartridges for two-component systems. Extensible rams, propelled by auxiliary power (e.g., pneumatic, electric motor power, etc.) are used for advancing the feeder pistons within the cartrdige cylinders for dispensing the cartridge contents. For controlling the auxiliary power the apparatus handle comprises an integrated valve or switch which can be operated with a trigger. If ever the rams should be extended without a cartridge being placed in the discharging position, consequential injuries or damages of material could result therefrom. To prevent this, a cartridge sensing element has been arranged, e.g., for shifting motion within the trigger and provided with a blocking cam. Without a cartridge being in place the cartridge sensing element is held in a blocking or non-actuating position and the blocking cam is positioned facing a stop, thus impeding the operation of the trigger and consequently blocking the extension of the ram. A cartridge placed correctly in the discharging position causes the sensing element to be held in the release position, whereby the blocking cam is freed and thus making triggering of the ram propulsion system possible. Consequently the rams can be extended without hazard in the cartridge cylinders.
REFERENCES:
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patent: 4669636 (1987-06-01), Miyata
patent: 4731058 (1988-03-01), Doan
patent: 4826053 (1989-05-01), Keller
patent: 4871088 (1989-10-01), Cox
Milef Boris
Olszewski Robert P.
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