Dispensing – Plural sources – compartment – containers and/or spaced jacket – With discharge assistant for each source
Patent
1993-12-09
1995-03-28
Kashnikow, Andres
Dispensing
Plural sources, compartment, containers and/or spaced jacket
With discharge assistant for each source
222145, 222326, 222340, 222391, B67D 552
Patent
active
054009251
ABSTRACT:
A device for dispensing a predetermined amount of fluid material from chambers within a cartridge. This device includes a housing, a trigger pivotably connected to the housing and a plunger having teeth on a top side thereof entering the housing and passing through an upper part of the trigger. A ratchet is attached to the upper part of the trigger and engaged between the plunger teeth. When force is applied to the trigger, the ratchet is pushed forward, causing the plunger to also move forward, dispensing the contents of each of the chambers within the cartridge. When the trigger is released, the ratchet moves backward causing the plunger to move with the ratchet. The plunger moves backward a short distance until the force applied by the ratchet is overcome through frictional engagement between the plunger and a frictional brake mounted on the housing, at that point the ratchet slides over the next tooth behind it on top of the plunger.
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patent: 4009804 (1977-03-01), Costa et al.
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patent: 4826053 (1989-05-01), Keller
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patent: 5123568 (1992-06-01), Keller
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patent: 5192008 (1993-03-01), Hwan
patent: 5203476 (1993-04-01), Keller
patent: 5263614 (1993-11-01), Jacobsen et al.
Coltene / Whaledent Inc.
Kashnikow Andres
Kaufman Joseph A.
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