Back to results
US 2016/0237771 A1Published application
Release Lugs for a Jarring Device
OwnerRobert W. Evansinventor
Life of this patent
Estimating the term…
Abstract
A release mechanism for a jarring tool is formed by a plurality of segmented release lugs. Each lug includes a plurality of axial spaced projections on an inner surface and a plurality of grooves on an outer surface. The projections have either different widths or are separated by varying distances and releaseably engage corresponding grooves in a mandrel located within a housing of the tool. The release lugs are positioned between a trigger sleeve and the mandrel.
Claims10
A release mechanism for a jarring tool having a mandrel comprising:
- a plurality of arcuate release lugs, each release lug including an inner surface and an outer surface;
- a plurality of axially spaced projections on the inner surface of the release lugs and a plurality of grooves on the outer surface of the release lugs;
- a mandrel having a plurality of axially spaced grooves on an outer surface of the mandrel;
- and
- an annular trigger sleeve surrounding the mandrel, the release lugs being positioned between the annular trigger sleeve and the mandrel.
2 more elements
A jarring tool comprising:
- a housing;
- a mandrel having a plurality of axially spaced grooves;
- a trigger sleeve surrounding the mandrel;
- a plurality of axially extending arcuate release lugs having an inner and outer surface, each lug including a plurality of axially spaced projections on its inner surface and a plurality of grooves on its outer surface;
- said release lugs being positioned between the mandrel and the trigger sleeve;
- and
- a spring means surrounding the mandrel.
4 more elements
Dependencies are inferred from the claim text.