Tensioner
US10500685B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2014 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Feb 6, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L1/12
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A tensioner, typically hydraulic, for threaded members, the tensioner comprising: a base (4) and a piston (6) defining a pressure space (13) therebetween, the base (4) and piston (6) being arranged to be urged apart along an axis (17) upon introduction of a fluid into the pressure space (13); and a thread-engaging member (7), comprising a body portion (8) of the form of a sleeve and having a threaded interior (30) for engagement with a threaded member (2) and a piston engaging portion (9) carrying a protrusion; in which the piston (6) bears against the protrusion such that the piston (6) exerts a force on the protrusion when urged apart from the base (4) by the introduction of fluid into the pressure space (13); the tensioner further comprising a displacement sensor arranged to determining the relative position of the body portion of the thread-engaging member and the base, the displacement sensor comprising a first part (12) carried on the base (4) and a second part (11) carried on the body portion (8); typically the displacement sensor is a magnetic encoder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.