Manually operated blowout preventer and hydraulic operator therefor
US4325534A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1980 |
| Grant date | Apr 20, 1982 |
| Priority date | — |
| Expiry date | Oct 10, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18592
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A blowout preventer having a body with a bore and opposing guideways intersecting the bore, a ram in each of the guideways, a cap closing the outer end of each of the guideways, an operating stem connecting to each of said rams, extending through its cap in threaded engagement and having means for engagement by a handle, such as flats on its outer end, a pair of hydraulic motors each having a housing and a rotating shaft, means for securing said motor housings to the body surrounding said guideways, means for connecting said drive shafts with the operating stems to rotate said stems, and means supplying hydraulic fluid to said motors for selective rotation of said shafts and said stems in preselected directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.