Dispensing – With discharge assistant – Container with follower
Patent
1995-05-12
1997-04-01
Kaufman, Joseph
Dispensing
With discharge assistant
Container with follower
22215301, 222326, G01F 1100
Patent
active
056158076
ABSTRACT:
A caulking gun having a fixed first bearing surface, and an engagement member for preventing rearward movement of a plunger shaft while permitting forward movement thereof. Following termination of forward movement of the plunger shaft in response to operation of a handle mechanism of the gun, the plunger shaft selectively can be moved rearwardly a predetermined distance in response to cartridge back pressure. In an alternative mode of operation, the rearward movement is substantially prevented for effecting precise control and smoothly continuous feeding of media from the gun. In one configuration, a shifting link permits movement of the plunger shaft together with the engagement member up to a distance E when a control surface is positioned for providing forward movement of the engagement member in response to forward movement of the plunger shaft. In another configuration wherein the handle mechanism has ratcheting engagement with the plunger shaft, a counterpart of the engagement member is pivotable relative to opposite ends of a fixed pivot slot in response to positioning of the control surface.
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Chen Tony D.
Kaufman Joseph
Rozsa Thomas I.
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