Dual chambered pump package for viscous products
US5363990A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1994 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | Feb 25, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D81/325
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A dual chambered pump for viscous products having a plastic body having a top wall and a side wall. The top wall has spaced discharge openings. The body has spaced parallel cylinders. A piston is associated with each cylinder and a piston rod is associated with each piston. A one way spring is provided between each rod and its respective piston. Each rod extends through the top wall of the body. A plastic lever has a top portion and a side portion which includes integral means interengaging integral portions on the top wall for pivotally mounting the top portion of the lever on the top wall of the body such that the side portion of the lever extends along the side wall of the body. The top portion of the lever has integral portions engaging the integral portions on the rod. A spring on the side portion of the lever is engageable with the side wall of the body for urging the lever away from the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.