Delivery of adjustable quantities of materials
US4444335A · kind A · utility
59Cited by
11References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1981 |
| Grant date | Apr 24, 1984 |
| Priority date | — |
| Expiry date | Sep 14, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/3156
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A delivery device and method making use of a plunger which can be controllable reciprocated within a housing to regulate the amount of material expelled from the housing. The plunger includes an adjustable stop collar which can be adjustably positioned, preferably by depressing the sides of the collar. In addition, a piston within the housing is sealably releasable from the plunger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.