Volumetric hand pump
US5713723A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 1997 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Jan 8, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B9/14
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A volumetric hand pump having a transparent pump chamber and a fixed full stroke volume. The transparent pump chamber allows visual observation of the amount of fluid being pumped when less than the fixed full stroke volume is used. The transparent pump chamber is surrounded by a housing or shroud which includes one or more windows that allow visual access to the transparent pump chamber. An optional stroke counter can be provided to track the number of full pump strokes, thus allowing accurate dispensing of both large and small quantities of fluids, while providing visual observation of the amount of fluid being pumped and dispensed. The pump is particularly useful for dispensing agricultural chemicals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.