Twist top actuated dispenser with follower
US4144988A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 17, 1977 |
| Grant date | Mar 20, 1979 |
| Priority date | — |
| Expiry date | Aug 17, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/761
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A piston, lead screw, dispenser rear end wall and twistable projection are assembled together. On the filling line, tubes each with a dispenser spout at one end, are filled through the opposite end and closed by securing the rear end wall of the assembly to the tube as a closure for the open end. In one embodiment the tube and end wall are made of plastic material and the securement is by ultrasonic welding; in another, the tube is of foil/fiber composite, the end wall is of metal and the securement is accomplished by crimping. When the dispenser tip is opened, rotatably twisting the lead screw projection in one angular sense will advance the piston and discharge the tube's filling of caulking compound or the like, that is contained between the piston and the spout.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.