Dispensing closure for chemical and pharmaceutical substances, and method of manufacturing same
US4671328A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 21, 1986 |
| Grant date | Jun 9, 1987 |
| Priority date | — |
| Expiry date | Mar 21, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/183
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dispensing closure for chemical and pharmaceutical substances, particularly narcotic liquids, narcotic gases, or the like, the closure comprised of a sealing cap (1) which is to be applied to the opening of the substance-dispensing container, and further comprised of an adapter piece (2) with code markings (3), to establish a joint between the adapter and a receiving structure on the container being filled, which receiving structure has corresponding markings, wherewith the sealing cap (1) and the adapter (2) are interconnected by a flexible, liquid-passing tube (6) which opens into a transverse bore hole passage (9) for liquid, and by a flexible air-delivery tube (8) which opens into a transverse air admission bore hole (10). The adapter piece (2), the flexible, liquid-passing tube (6), and the sealing cap (1) are comprised of a single piece having a longitudinal bore (11) passing through its entire length, wherewith the opening of said bore at the adapter end of the bore is sealed off with a sealing stopper (13) having a blind hole ( 12) into which the flexible air-delivery tube (8) extends, wherewith the air-delivery tube (8) is held in place in the blind hole. Air-delivery tu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.