Clamp-on transducer for well unit
US3965736A · kind A · utility
18Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1974 |
| Grant date | Jun 29, 1976 |
| Priority date | — |
| Expiry date | Feb 13, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B49/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Strain measuring devices for measuring the strain in the polish rod of a rod-pumped well unit. The devices include a body member to which strain gages are bonded, and further include clamp means for detachably affixing the devices directly to a polish rod. Embodiments are disclosed in which the body member is in the form of a strap, in the form of a split cylinder, or as an elongated bar with a section of reduced cross-section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.