Method and apparatus for generating fluid pressure pulses
US7405998B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2005 |
| Grant date | Jul 29, 2008 |
| Priority date | — |
| Expiry date | Feb 2, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Apparatuses and methods for generating fluid pressure pulses are disclosed. An example apparatus may include a chamber that can collect fluid and an upstream ported disc coupled to a downstream end of the chamber. The upstream ported disc may rotate about a central axis. The upstream ported disc includes an upstream eccentric port that rotates about the central axis as the upstream ported disc rotates. The example apparatus may include a downstream ported disc coupled to a downstream end of the upstream ported disc such that the downstream ported disc remains substantially rotationally fixed relative to the upstream ported disc. The downstream ported disc includes a downstream eccentric port that may align with the upstream eccentric port to form a passageway for fluid to exit from the chamber to outside of the apparatus, at some time in a rotation cycle of the upstream ported disc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.