Toothpaste dispenser with a flexible air compressing bag used to bring about dispensing

• US 5,115,948 A
• Filed: 06/15/1990
• Issued: 05/26/1992
• Est. Priority Date: 06/15/1990
• Status: Expired due to Fees

• Current Assignee: Reflex Packaging Group
• Original Assignee: Robin L. Johnson
• Inventors: Johnson, Robin L.
• Primary Examiner(s): Huppert, Michael S.
• Assistant Examiner(s): Pomrening, Anthoula
• Application Number:
  US07/538,530
• Time in Patent Office: 711 Days
• Field of Search: 222/209, 222/389, 222/401, 222/94, 222/386.5
• US Class Current: 222/209
• CPC Class Codes: A47K 5/1211 using pressure on soap, e.g. with piston A47K5/1201 takes precedence; by squeezing A47K5/122
• CPC Class Codes: B05B 11/02 Membranes or pistons acting on the contents inside the container, e.g. follower pistons
• CPC Class Codes: G01F 11/025 with manually operated pistons G01F19/005 takes precedence
• CPC Class Codes: G01F 11/084 using a bulb to pressurise the fluid to be dispersed

Abstract

A toothpaste dispenser having a chamber which is operated by a flexible bag extending longitudinally alongside the chamber. A one way valve is provided at the bottom of the chamber through which air, under pressure, is introduced when the bag is compressed manually. A toothpaste pusher inside the chamber is moved vertically upwardly by the air under pressure introduced through the one-way valve. The toothpaste pusher takes the form of a bellows.

Claims

1. A toothpaste dispenser comprising a cylindrical tube having a toothpaste dispensing nozzle at the top end thereof, a pneumatic toothpaste pushing tube positioned at the bottom thereof, a flexible air compressing bag disposed alongside said cylindrical tube having a hose connected to the bottom of said toothpaste pushing tube, including one-way valve means enabling introduction of compressed air at the bottom of said cylindrical tube into said toothpaste pushing tube by squeezing said bag, toothpaste pneumatic pushing means positioned directly above said toothpaste pushing tube actuated by said compressed air introduced at the bottom of said cylindrical tube into said toothpaste pushing tube for forcing toothpaste to exit through said nozzle.

2. A toothpaste dispenser as recited in claim 1 wherein said toothpaste dispensing nozzle is curved towards the side of said cylindrical tube so as to dispense toothpaste substantially horizontally of said cylindrical tube.

3. A toothpaste dispenser as recited in claim 2 wherein said toothpaste pushing means is in the form of a piston closely fitting the inner wall of said cylindrical tube.

4. A toothpaste dispenser as recited in claim 3 wherein the upper side of said piston is convexly curved.

5. A toothpaste dispenser as recited in claim 2 wherein said toothpaste pushing tube is in the form of a flexible bellows simulating that of a concertina.

6. A toothpaste dispenser as recited in claim 5 wherein said toothpaste pushing means is in the form of a cap screwed to the top of said bellows.

7. A toothpaste dispenser as recited in claim 2 together with a slip-fitted detachable cap on said toothpaste dispensing nozzle.

8. A toothpaste dispenser as recited in claim 1 together with a flat base alongside said cylindrical tube on which said air compressing bag is mounted.

9. A paste dispenser comprising a cylindrical tube having a paste dispensing nozzle of at the top end thereof, which nozzle is curved toward the side thereof, a pneumatic paste pushing tube positioned at the bottom thereof, a flexible air compressing ban dispensed alongside said cylindrical tube having a hose connected to the bottom of said paste pushing tube, including one-way valve means enabling introduction of compressed air at the bottom of said cylindrical tube into said paste pushing tube by squeezing said bag, paste pneumatic pushing means positioned directly above said paste pushing tube actuated by said compressed air introduced at the bottom of said cylindrical tube into said paste pushing tube for forcing compressed-paste to exit through said nozzle, and a detachable cap slip-fitted to the top of said cylindrical tube.