Flow totalizer
US10288466B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2017 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | Oct 26, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/1226
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A flow totalizer apparatus for totalizing the volume of fluid flowing through the inventive apparatus. The apparatus includes a cylinder having a first cylinder port at one end and a second cylinder port at an opposite end, a piston slidably mounted within the cylinder, a bistable spring mechanism, a directional control valve and a counter. The bistable spring mechanism has a motion axis with two stable positions therealong and includes a drive pin, a piston slotted bar and a spool slotted bar, both slotted bars slidably connected to the drive pin and aligned with the motion axis. The total volume is estimated by cylinder volume times the number of stable-position changes of the bistable spring mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.