Split bobbin clutch for bypass plungers
US9869401B1 · kind B1 · utility
3Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2017 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Jan 17, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/14
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A clutch assembly formed as a circular split bobbin assembly for resisting reciprocating motion of a shift rod or dart valve stem in a bypass plunger. The split bobbin may include at least one circumferential groove disposed in its outer radius, and a tension band member disposed in each circumferential channel to secure the split bobbin assembly around the shift rod or valve stem and wherein the tension band member has a cross section aspect ratio R<1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.