Hand operated sprayer

Claim 2

A sprayer comprising a body having a lower tubular portion and an upper portion with an upright cylinder, said body having a forward portion with a delivery passageway therein extending from said cylinder, a plunger having an upper piston portion disposed in said cylinder for movement therein and a lower tubular end with a dip tube for insertion into a receptable extending therefrom and movable therewith, said plunger between said piston portion and said lower tubular end having an actuating face thereon, a trigger pivotally carried on said body and having a cam portion engaging said actuating face for moving said plunger in a predetermined direction upon movement of said trigger, said forward portion having spray means at its forward end with which said delivery passageway is in communication.

Claim 3

A sprayer as defined in claim 1 in which said body has a sealing collar at the lower end thereof with a central opening therethrough through which said plunger is movable, and a closure cap in engagement with said sealing collar for securing said body to a liquid receptacle.

Claim 4

A sprayer as defined in claim 2 in which said lower tubular portion is in spaced diametrical relation to said central opening of said sealing collar for venting therealong, and said plunger has a valve seating portion for engagement with said sealing collar to cut off fluid access in one position and to vent along said tubular portion in another position.

Claim 5

A sprayer as defined in claim 1 iN which said spray means includes a movable member for shutting off flow through said discharge passageway in one position thereof.

Claim 6

A sprayer as defined in claim 2 in which said sealing collar is insertable into said body for assembly, and said sealing collar and said body have portions in locked engagement in the assembled position of said sealing collar.

Claim 7

A sprayer as defined in claim 3 in which holding means is provided in engagement with said trigger and said body for holding said valve seating portion in engagement with said sealing collar.

Claim 8

A sprayer as defined in claim 1 in which a resilient member is provided urging said plunger in opposition to said trigger.

Claim 9

A sprayer as defined in claim 7 in which said resilient member is disposed in said cylinder in engagement with said piston.

Claim 10

A sprayer as defined in claim 1 in which a non-return valve is provided in the fluid passageway in said plunger for retaining fluid in said cylinder against return flow.

Claim 11

In a sprayer for attachment to a container comprising a body member having a cylinder therein with nozzle means at one end and a sealing collar and closure cap means at the other end, a piston in the cylinder operable in a first direction for filling said cylinder with material to be dispensed and operable in a second direction for dispensing the material from said cylinder through said nozzle means, the improvement comprising a dip tube carrying extension extending downwardly from said piston and into said sealing collar and movable with said piston, said extension having a portion engaged in sealing relation with said sealing collar in one position of said extension and said extension permitting venting through said collar in another position of said extension.

Claim 12

In a sprayer for attachment to a container comprising a body member having a cylinder therein with nozzle means at one end and a sealing collar and closure cap means at the other end, a piston in the cylinder operable in a first direction for filling said cylinder with material to be dispensed and operable in a second direction for dispensing the material from said cylinder through said nozzle means, the improvement comprising a dip tube carrying extension extending downwardly from said piston and into said sealing collar and movable with said piston, said extension having a portion engaged in sealing relation with said sealing collar in one position of said extension and said extension permitting venting through said collar in another position of said extension.

Claim 13

A sprayer as defined in claim 10 in which said portion of said extension is an enlargement which engages said sealing collar at its upper end.

Claim 14

A sprayer as defined in claim 10 in which a handle is provided pivoted on said body for moving said piston.

Claim 15

A sprayer as defined in claim 12 in which means is provided for locking said handle with respect to said body with said enlargement in sealing relation to said collar.

Claim 16

A sprayer as defined in claim 12 in which said piston has a rim portion with an annular transverse face thereon for actuating engagement by a portion of said handle.

Claim 17

A sprayer as defined in claim 14 in which said piston has an additional rim portion with an annular transverse face thereon spaced from said first mentioned annular face for actuating engagement by another portion of said handle.

Claim 18

A sprayer as defined in claim 15 in which said handle has an upper cam face for operating engagement with one of said annular transverse faces and a lower cam face for engagement with the other of said annular transverse faces.

Claim 19

In a device for dispensing material from a container having a mouth, said device having a cap for releasable attachment to the container mouth, the improvement which comprises: means providing a cylinder beyond said cap away from the container mouth, a discharge nozzle extending from said cylinder away from said cap; a hollow piston slidably reciprocable in said cylinder, a tube extending from said piston through said cap for reception in the container inward from the container mouth, said tube having a longitudinal passage therethrough which opens at one end into the hollow interior of the piston and opens at the opposite end into the interior of the container, said piston being slidable in said cylinder toward said cap to fill the cylinder through said tube with material from the container and slidable away from the cap to dispense material from the cylinder through said discharge nozzle; and means for venting the container mouth to the atmosphere when said piston is moved away from the cap to dispense material from the cylinder.

Claim 20

In a device for dispensing material from a container having a mouth, said device having a cap for releasable attachment to the container mouth, the improvement which comprises: means providing a cylinder beyond said cap away from the container mouth, a discharge nozzle extending from said cylinder away from said cap; a hollow piston slidably reciprocable in said cylinder, a tube extending from said piston through said cap for reception in the container inward from the container mouth, said tube having a longitudinal passage therethrough which opens at one end into the hollow interior of the piston and opens at the opposite end into the interior of the container, said piston being slidable in said cylinder toward said cap to fill the cylinder through said tube with material from the container and slidable away from the cap to dispense material from the cylinder through said discharge nozzle; and means for venting the container mouth to the atmosphere when said piston is moved away from the cap to dispense material from the cylinder.

Claim 21

A dispensing device according to claIm 17, wherein said last-mentioned means comprises: means attaching said cylinder to said cap and providing a passage that opens at one end into the interior of said cap for fluid communication with the mouth of the container and is open to the atmosphere at its opposite end away from the cap; and a guide member slidable in said passage and coupled to said piston to substantially close said passage when the piston is moved toward said cap and to open said passage so as to vent the container to the atmosphere when the piston is moved away from the cap.