Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
170 words
An improved gripping slip arranged to be movably mounted on a well tool and arranged to engage the well bore wall to hold the well tool in a well bore or the like, said slip comprising a unitary body member having first and second ends; a bore, having a longitudinal central axis, extending through said body intersecting said ends and sized to encircle a portion of the well tool; a wall engaging portion adjacent each said end located on generally opposite sides of said body member, the distance between said wall engaging portions being greater than the diameter of the well bore whereby said engaging portions can engage the well bore wall; and, a portion intermediate said ends having a dimension less than the diameter of the well bore, whereby the well tool can move through the well bore, said improvement comprising: each said wall engaging portion having a first curved bounding profile in a plane containing said central axis and a second curved bounding profile about said central axis.
Claim 2
Dependent Claim
170 words
An improved gripping slip arranged to be movably mounted on a well tool and arranged to engage the well bore wall to hold the well tool in a well bore or the like, said slip comprising a unitary body member having first and second ends; a bore, having a longitudinal central axis, extending through said body intersecting said ends and sized to encircle a portion of the well tool; a wall engaging portion adjacent each said end located on generally opposite sides of said body member, the distance between said wall engaging portions being greater than the diameter of the well bore whereby said engaging portions can engage the well bore wall; and, a portion intermediate said ends having a dimension less than the diameter of the well bore, whereby the well tool can move through the well bore, said improvement comprising: each said wall engaging portion having a first curved bounding profile in a plane containing said central axis and a second curved bounding profile about said central axis.
Claim 3
Dependent Claim
22 words
The gripping slip of claim 1 wherein at least one of said wall engaging portions has a plurality of teeth formed thereon.
Claim 4
Dependent Claim
16 words
The gripping slip of claim 2 wherein said bounding curve is a segment of a circle.
Claim 5
Dependent Claim
16 words
The gripping slip of claim 2 wherein said bounding curve is a segment of a parabola.
Claim 6
Dependent Claim
20 words
The gripping slip of claim 1 wherein both of said wall engaging portions have a plurality of teeth formed thereon.
Claim 7
Dependent Claim
111 words
An improved gripping slip for well tools comprising: a tubular body having a longitudinal axis, first and second ends, a pivot axis located midway between said ends and extending generally perpendicularly to and intersecting said longitudinal axis, and a wall engaging surface adjacent each said end, at least one of said wall engaging surfaces being an arcuate surface, wherein said at least one arcuate surface comprises teeth and the radius of curvature of each said tooth is different from the radius of curvature of an adjacent tooth; and a pair of lug members projecting into the interior of said tubular body member, said lug members being located on said pivot axis.
Claim 8
Dependent Claim
111 words
An improved gripping slip for well tools comprising: a tubular body having a longitudinal axis, first and second ends, a pivot axis located midway between said ends and extending generally perpendicularly to and intersecting said longitudinal axis, and a wall engaging surface adjacent each said end, at least one of said wall engaging surfaces being an arcuate surface, wherein said at least one arcuate surface comprises teeth and the radius of curvature of each said tooth is different from the radius of curvature of an adjacent tooth; and a pair of lug members projecting into the interior of said tubular body member, said lug members being located on said pivot axis.