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US 4,381,584 AGranted
Dual string spider
AssigneeBilco Tools, Inc.
InventorWilliam E. Coyle, Sr.
Life of this patent
Estimating the term…
Abstract
A dual string spider having a body of two halves pivotally secured at one side and releasably secured at the other side with bowls extending through the body and open to each other, gripping means for each bowl, an actuator for each gripping means, and bars extend through the body halves to divide the bowls and to center well strings in their respective bowls.
Claims3
A dual spider comprising
- a body having a pair of tapered bowls extending therethrough with said bowls being open to each other at their inner portions
- a set of gripping slips for each bowl,
- an actuator for each set of gripping slips
- a pair of bars extending across the lower portion of said body below said bowls,
- said bars in plan view being substantially perpendicular to each other and intersecting mid way between the centers of said bowls to provide a barrier therebetween, and
- means releasably securing the ends of the bars in said body.
3 more elements
Dependencies are inferred from the claim text.