Manually-operable spray dispenser with locking mechanism
US4944429A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1987 |
| Grant date | Jul 31, 1990 |
| Priority date | — |
| Expiry date | Aug 28, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1059
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A spraying apparatus is disclosed which employs a manually operable pump adapted to discharge a dosage of a liquid, such as a pharmaceutical preparation, from an associated container. The pump includes a reciprocating stem which extends through a screw cap of the container. An actuator is mounted on the stem of the pump for conjoint reciprocating movement therewith relative to the screw cap. Upon the extension of the actuator and hence the stem, liquid is withdrawn from the container by the pump. Upon the depression of the actuator and hence the stem, the liquid is delivered to a spray nozzle formed integrally with the actuator and then discharged from the nozzle in the form of a spray or mist. In order to ensure the smooth and effective operation of the spraying apparatus, lugs on the actuator cooperate with ribs on the screw cap to inhibit the actuator from rocking on the stem as the actuator is depressed. The lugs also cooperate with a flange on the screw cap to inhibit the actuator from being ejected by the stem of the pump during its reciprocating movement. A dust cover mounted on the actuator is provided with a plurality of resilient legs which extend through the actuator and…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.