Rainguard for oil well trapper box
US10329880B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2015 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Dec 19, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rainguard device for insertion on top of a stuffing box containment basin, said device comprises: a top portion; a shield; and a base ring; wherein said top portion comprising a flat circular upper section connected at its underside to a neck connected to a lower section; said neck is adapted to be inserted into an aperture present at a top section of the shield; said top portion having a vertical central aperture going therethrough adapted to receive a polish rod; said shield comprising two halves and having a frusto-conical top portion and defining an aperture at the top thereof and having a cylindrical bottom section; said bottom section defining an aperture and adapted to be inserted into the base ring; said base ring comprising two halves each of which comprising: a lower edge adapted for insertion into the inside of said basin; a middle ring portion supporting an inner lip and an outer lip, both inner and outer lips extending updwardly from the middle ring portion and both lips extending around the circumference of the middle ring portion; said inner lip and outer lip defining therebetween a channel adapted to receive an edge of the bottom portion of the shield; and wherein…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.