Applicator for dispensing substances

Claim 2

A dosage applicator comprising a tubular member closed at one end by normally closed valve means, a piston constructed of a relatively resilient material slidably and sealably positioned in said tubular member to define therewith and with the valve means an expandible chamber adapted to be substantially filled with a liquified substance under pressure to be dispensed therefrom, an operator member mounted for limited movement on said applicator, said operator member having a first portion engageable with the applicator valve means and a second portion opposite to said first portion, said first and second portions having a communicating passageway therethrough, a holder constructed to receive said applicator, said holder having means thereon engageable with said operator member adjacent to the said second portion thereof when dispensing the contents of the applicator, means on said applicator by which a force can be applied against the piston in a direction to move the piston inside the tubular applicator member toward the valve means, said force also being applied through the holder and through the operator member engaged therewith against the applicator valve means in a direction to open the applicator valve means so that the contents of the applicator can escape through the communicating passageway in the operator member.

Claim 3

The dosage applicator defined in claim 1 including housing means for mounting said operator member on said applicator, said housing means permitting limited movement of the operator member between a first position engaging and opening the applicator valve means and a second position permitting the applicator valve means to close.

Claim 4

The dosage applicator defined in claim 1 wherein said resilient piston is slidably and sealably engageable with the inside of the tubular applicator member, and means limiting movement of the piston in the applicator between a position adjacent to the applicator valve means and a position in which the piston is spaced a predetermined distance from the applicator valve means.

Claim 5

The dosage applicator defined in claim 1 wherein said piston includes a member having an outside groove formed therein, and an O-ring mounted in said groove and compressed thereon between the said piston member and the inner surface of the tubular applicator member.

Claim 6

The dosage applicator defined in claim 1 wherein said tubular applicator member has a metal sleeve member positioned in the end thereof adjacent to the applicator valve means, said piston being positioned for sliding movement in said sleeve member.

Claim 7

An applicator for receiving a charge from an aerosol container Having closure means on one end thereof including normally closed valve means and a dip tube assembly associated therewith, said applicator including an applicator body portion having normally closed valve means on one end thereof and operator means mounted for limited movement on said applicator, said operator means having a first portion adapted to cooperate with the valve means thereon and a second portion adapted to simultaneously cooperate with the valve means on the aerosol container during filling and charging of the applicator therefrom, said applicator including a tubular member closed at one end by the said applicator valve means, a resilient piston slidably and sealably positioned in the tubular member and movable therein from a position adjacent to the applicator valve means to a position spaced a predetermined distance therefrom to define an expandible applicator chamber which controls and limits the amount of charge that can be contained therein, and a passageway through said operator means for establishing communication between the first and second portions thereof and between the inside of the applicator and the inside of the aerosol container when pressure is applied on the applicator and on the operator means mounted thereon in a direction to simultaneously open the valve means on the applicator and on the aerosol container.

Claim 8

An applicator for receiving a charge from an aerosol container Having closure means on one end thereof including normally closed valve means and a dip tube assembly associated therewith, said applicator including an applicator body portion having normally closed valve means on one end thereof and operator means mounted for limited movement on said applicator, said operator means having a first portion adapted to cooperate with the valve means thereon and a second portion adapted to simultaneously cooperate with the valve means on the aerosol container during filling and charging of the applicator therefrom, said applicator including a tubular member closed at one end by the said applicator valve means, a resilient piston slidably and sealably positioned in the tubular member and movable therein from a position adjacent to the applicator valve means to a position spaced a predetermined distance therefrom to define an expandible applicator chamber which controls and limits the amount of charge that can be contained therein, and a passageway through said operator means for establishing communication between the first and second portions thereof and between the inside of the applicator and the inside of the aerosol container when pressure is applied on the applicator and on the operator means mounted thereon in a direction to simultaneously open the valve means on the applicator and on the aerosol container.

Claim 9

The applicator defined in claim 6 wherein the valve means on the applicator are female type valve means, said first and second portions of the operator means including spaced and opposed male portions adapted to cooperate respectively with the said applicator and aerosol container valve means.

Claim 10

A dosage applicator comprising a tubular member closed at one end by normally closed valve means, a piston slidably and sealably positioned in said tubular member to define therewith and with the valve means an expandible chamber adapted to be substantially filled with a liquified substance under pressure to be dispensed therefrom, an operator member for said applicator, said operator member having a first portion engageable with the applicator valve means and a second portion opposite to said first portion, said first and second portions having a communicating passageway therethrough, a holder constructed to receive said applicator, said holder having means thereon engageable with said operator member adjacent to the said second portion thereof when dispensing the contents of the applicator, means on said applicator by which a force can be applied against the piston in a direction to move the piston inside the tubular applicator member toward the valve means, said force also being applied through the holder and through the operator member engaged therewith against the applicator valve means in a direction to open the applicator valve means so that the contents of the applicator can escape through the communicating passageway in the operator member, and housing means for mounting said operator member on said applicator, said housing means permitting limited free movement of the operator member between a position engaging the applicator valve means and a position spaced therefrom, said operator member including a member having a central portion, and said first and second operator member portions include opposed tubular portions smaller in diameter than the central portion, said housing means for mounting said operator member on the applicator including means whereby one of said opposed tubular end portions is positioned to cooperatively engage the applicator valve means, the opposite tubular end portion of said operator member extending through said housing means.

Claim 11

A dosage applicator comprising a tubular member closed at one end by normally closed valve means, a piston slidably and sealably positioned in said tubular member to define therewith and with the valve means an expandible chamber adapted to be substantially filled with a liquified substance under pressure to be dispensed therefrom, an operator member for said applicator, said operator member having a first portion engageable with the applicator valve means and a second portion opposite to said first portion, said first and second portions having a communicating passageway therethrough, a holder constructed to receive said applicator, said holder having means thereon engageable with said operator member adjacent to the said second portion thereof when dispensing the contents of the applicator, means on said applicator by which a force can be applied against the piston in a direction to move the piston inside the tubular applicator member toward the valve means, said force also being applied through the holder and through the operator member engaged therewith against the applicator valve means in a direction to open the applicator valve means so that the contents of the applicator can escape through the communicating passageway in the operator member, and housing means for mounting said operator member on said applicator, said housing means permitting limited free movement of the operator member between a position engaging the applicator valve means and a position spaced therefrom, said operator member including a member having a central portion, and said first and second operator member portions include opposed tubular portions smaller in diameter than the central portion, said housing means for mounting said operator member on the applicator including means whereby one of said opposed tubular end portions is positioned to cooperatively engage the applicator valve means, the opposite tubular end portion of said operator member extending through said housing means.