Manual sprayer device with a piston-controlled compensation valv

Details Manual sprayer device with a piston-controlled compensation valv Manual sprayer device with a piston-controlled compensation valv

1992-07-14

1993-09-14

Sotelo, Jesus D.

Dispensing

With discharge assistant

With material supply container and discharge assistant with...

239333, B65D 4734

Patent

active

052441261

ABSTRACT:
The sprayer device comprises a trigger lever (44) which operates a piston (40) movable within a cylinder (20). The piston (40) comprises an intermediate sunken portion or groove (42) which cooperates with a compensation valve (18) to enable it to close when the piston (40) is substantially at the end of its suction stroke, i.e. in its rest position. During the course of its movement, the piston (40) opens the compensation valve (18).

REFERENCES:
patent: 4815663 (1989-03-01), Tada
patent: 4958754 (1990-09-01), Dennis

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