Schlumberger Technology Corporation

Smith International, Inc.

Brigham Young University

John J Pierce

David R Hall

Scott Steven Dahlgren

Youhe Zhang

Yuelin Shen

Jonathan D Marshall

Larry L Howell

Michael George Azar

Geoffrey Charles Downton

Francis Leany

Yuri Y Burhan

Terri C Bateman

Bryce Edmondson

Balasubramanian Durairajan

Joshua J Hanson

Quentin Allen

Michael McCain

A drill bit may include a bit body and at least two cones assemblies including at least two drive cylinders having at least two cones. The at least two cone assemblies are mounted on the bit body. The drill bit may also include an indexing mechanism coupled to the bit body and configured to rotate and lock at least one drive cylinder. A method of operating the drill bit may include providing fluid to the drill bit, rotating the drill string to drill formation, moving the indexing mechanism an axial distance within a central chamber of the drill bit, rotating the at least two indexable structures as the indexing mechanism moves, and locking the at least two indexable structures.

Indexing drill bit

A surgical retractor device for retaining and/or moving internal organs during minimally invasive or laparoscopic surgery is provided. The surgical retractor can be a single continuous structure that includes a shaft. The shaft can branch into a first elongate finger with a first distal end opposite the shaft and a second elongate finger with a second distal end opposite the shaft. The retractor can further include a resilient lattice structure disposed between the first elongate finger and the second elongate finger. The retractor can have an expanded configuration and a collapsed configuration based on relative distance between the first distal end and the second distal end. When the retractor is in the collapsed configuration, spring force energy can be stored in the resilient lattice structure.

Surgical retractor

A cutting element assembly includes a cutting element partially disposed within a support and a retention mechanism disposed between the cutting element and the support, both the axial and radial dimensions of the retention mechanism being deformable.

Axially stable retention mechanism for picks and cutting elements

Growing community of inventors

Provo, UT, United States of America

John J Pierce