Double piston pump for administering medication
US5526962A · kind A · utility
7Cited by
13References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 10, 1994 |
| Grant date | Jun 18, 1996 |
| Priority date | — |
| Expiry date | May 10, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B3/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The device of the invention provides preselected doses of liquid medicine and has a cylinder assembly (1, 2) with a left cylinder (1), a right cylinder (2) and a double piston (4, 5) displaceably mounted in the assembly with a left piston end (4) and a right piston end (5). A coupling links the double piston in a positive and/or frictional manner with a drive unit (15). The device is controlled passively by two automatically closing intake valves (7, 8) and two discharge valves (11, 12). Thereby a continuous flow of liquid medicine 20 out of the medicine container 10 can be generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.