Device for blocking at a given torque a rotating machine driven by a hydraulic turbine
US3981186A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1975 |
| Grant date | Sep 21, 1976 |
| Priority date | — |
| Expiry date | Jul 14, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B10/70
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
This invention concerns a device to block at a given torque a rotating machine driven by a hydraulic or gas turbine. The device comprises means of separating a driven disc from a driving disc, consisting of the insertion between the two discs of at least three balls or the like, which roll along three inclined cavities sloping in opposite directions when the longitudinal reaction resulting from the driven-shaft torque exceeds the force of a calibrated spring; these means co-operate with a disc brake fixed to the driven shaft, and which increases the driven-shaft torque. This device is used in particular to block, outside operating periods, driven appliances connected with a hydraulic turbine operated by drilling mud in equipment at the bottom of wells to measure and transmit drilling parameters and characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.