Trigger sprayer with discharge port blocking mechanism

Details Trigger sprayer with discharge port blocking mechanism Trigger sprayer with discharge port blocking mechanism

1996-07-19

1998-03-03

Kaufman, Joseph

Dispensing

With lock or fastening seal

Inhibiting actuation of discharge assistant

2223831, 239333, B67D 532

Patent

active

057225699

ABSTRACT:
A trigger sprayer comprises a dispenser body, a pump mechanism adjacent the dispenser body, a trigger adjacent the pump mechanism, and a plug. The dispenser body has an intake port adapted for fluid communication with a source of liquid, an intake liquid flow path providing fluid communication between the intake port and the pump mechanism, a discharge port, and a discharge liquid flow path providing fluid communication between the pump mechanism and discharge port. The pump mechanism includes a pump element reciprocally moveable relative to the dispenser body to draw fluid in through the intake port and force it out through the discharge port. The trigger is moveable relative to the dispenser body between forward and rearward positions and is located and configured to cause the pump element to move from its first position to its second position when the trigger is moved from its forward position to its rearward position. The plug is connected to the trigger and moveable relative to the dispenser body between a blocking position in which it covers the discharge port and an unblocking position in which it is laterally spaced from the discharge port to avoid interference with the discharge of fluid through the discharge port. The trigger and plug are configured so that movement of the trigger between its forward and rearward positions causes movement of the plug between its blocking and unblocking positions.

REFERENCES:
patent: 4153203 (1979-05-01), Tada
patent: 4606480 (1986-08-01), Rodriguez Gazulla
patent: 4815663 (1989-03-01), Tada
patent: 4917303 (1990-04-01), Maas et al.
patent: 5156304 (1992-10-01), Battegazzore
patent: 5158233 (1992-10-01), Foster et al.
patent: 5211315 (1993-05-01), Geier
patent: 5228602 (1993-07-01), Maas et al.
patent: 5332128 (1994-07-01), Mass et al.
patent: 5564604 (1996-10-01), Tada
patent: 5657907 (1997-08-01), Dobbs et al.

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