Manually operated dispensing pump
US11338310B1 · kind B1 · utility
3Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2021 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Jan 25, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1095
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A manually operated pump including: an inlet one-way valve; a pump chamber downstream of and in fluid communication with the inlet one-way valve; a piston interior to the pump chamber and slideably engaged with the pump chamber; an actuator engaged with the piston or the pump chamber; a block thermoplastic elastomeric spring engaged with the actuator to move the actuator as the block thermoplastic elastomeric spring relaxes; and an optional outlet one-way valve downstream of and in fluid communication with the pump chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.