Tensioning hydraulic nuts
AssigneeCurtiss-Wright Flow Control Corporation
InventorJohn Wentworth Bucknell
Life of this patent
Estimating the term…
Abstract
A hydraulic tensioning system for nuts on studbolts has a puller bar and a puller buddy, which are coupled to the studbolt, and a bridge around the nut. The puller bar is internally coupled to the studbolt (and may engage the nut before the tension is applied). The nut can comprise a cone nut, which cooperates with a complementary collar or shell with a conical inner face and a spherical base washer.
Claims18
A hydraulic tensioner for a studbolt or similar, fitted with a nut, extending from an article of machine, said tensioner including or comprising:
- a puller bar for engagement in an internal thread in an end of the studbolt;
- a bridge extending around and/or over the nut, engageable with the article or machine;
- and
- hydraulic means between the puller bar and bridge and operable to cause the puller bar to tension the studbolt by pulling the one end of the studbolt in a direction away from the article or machine.
An hydraulic tensioner for application with a stud bolt fitted with a nut, said tensioner having including or comprising:
- a puller bar for engagement in an internal thread with the studbolt;
- a puller buddy for engagement with an external thread on the studbolt and with the puller bar;
- an hydraulic means acting via a bridge around and/or over a nut and against the puller bar to tension the studbolt.
Dependencies are inferred from the claim text.