Protector cap and wiper for dispenser discharge orifice
US5207785A · kind A · utility
22Cited by
7References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 19, 1991 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Aug 19, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1053
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A finger actuated plunger of a dispenser has a protector cap telescoped over the plunger head for reciprocation independently thereof along the axis of plunger reciprocation. A portion of the cap side wall covers the discharge orifice in the head in a condition of non-use, and the cap side wall has an aperture adjacent such wall portion for alignment with the orifice for uncovering the orifice in a condition of use. A spring extends solely between the head top wall and the cap top wall for resiliently urging the cap into its condition of non-use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.