Dispensing device having improved plunger assemblies

Details Dispensing device having improved plunger assemblies Dispensing device having improved plunger assemblies

1988-10-31

1990-03-13

Shaver, Kevin P.

Dispensing

With discharge assistant

Container with follower

222325, 222137, 222145, B67D 4702, B67D 4900, G01F 1100

Patent

active

049077279

ABSTRACT:
A hand-held dispenser for dispensing two fluid components of an adhesive polymer through a nozzle and into openings defined within wall structures so as to provide a high strength hold upon metal anchors subsequently inserted into the openings. The dispenser includes an improved plunger assembly for efficiently expelling the fluids from the respective chambers into the nozzle. The improved plunger assembly includes a compression pad mounted on the end of a piston. The compression pad and piston are enclosed by a dome shaped cap which creates an air chamber in between to exert pressure on the compression pad when dispensing to deform the pad to create a seal between the plunger assembly and the cylinder in which it is housed.

REFERENCES:
patent: 2902190 (1959-09-01), Hosler
patent: 3029985 (1962-04-01), Krueger et al.
patent: 3197067 (1965-07-01), Rataczak
patent: 3201003 (1965-08-01), Wark et al.
patent: 3987941 (1976-10-01), Blessing
patent: 4323177 (1982-04-01), Nielsen

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