Claims
- 1. A dispenser for a highly viscous non flowable product which comprises:
- (a) a generally tubular container body to hold the product;
- (b) a liquid pump dispenser, at the upper portion of the container body, which comprises a hand depressible, spring-biased piston/cylinder pumping mechanism in a housing having a product inlet section which extends at least partially into the interior of the container body; and
- (c) a take-up piston at the lower portion of the container body which responds to discharge of product from the container body by shifting its position towards the upper end of the container so as to decrease the internal volume of the container body holding the product by an amount corresponding to the volume of product discharged, the take-up piston comprising:
- (i) a depression in its upper surface into which at least a portion of the housing of the pump dispenser can fit when the take-up piston advances into the upper portion of the container body; and
- (ii) transverse slot means communicating with the depression (i) and the side walls of the container body to allow any entrapped air to bleed off from the space within the container between the take-up piston and the housing of the pump dispenser.
- 2. A dispenser as claimed in claim 1 wherein three slot means are in communication with the depression and side walls.
- 3. A dispenser as claimed in claim 1 wherein the depression is centrally located in the upper surface of the piston.
- 4. A dispenser as claimed in claim 2 wherein the depression is centrally located in the upper surface of the piston.
- 5. A dispenser as claimed in claim 4 wherein the three slot means are at 120.degree. angles to one another.
- 6. A dispenser of claim 1 for dispensing petroleum jelly.
- 7. A dispenser of claim 1 for dispensing cold cream.
Parent Case Info
This application is a continuation-in-part of U.S. Ser. No. 8,024, filed Jan. 28, 1987 now abandoned.
US Referenced Citations (9)
Foreign Referenced Citations (1)
Number |
Date |
Country |
58-122066 |
Jul 1983 |
JPX |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
8024 |
Jan 1987 |
|