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US 10,646,261 B2Granted
Multi-purpose screwdriver and method of use
AssigneeWarsaw Orthopedic, Inc.
InventorsLeigh Anna Folger, Rex W. Armstrong, David A. Mire, Russell P. Nockels, Ian J. Harding
Life of this patent
Estimating the term…
Abstract
A driver includes a sleeve having an inner surface defining a passageway. The sleeve extends along a longitudinal axis between a proximal end and an opposite distal end. The proximal end includes a groove in the inner surface. A biasing element is positioned partially in the groove. A shaft is disposed in the passageway. The shaft includes an outer surface, a first engagement portion, and a second engagement portion.
Claims13
A driver comprising:
- a sleeve comprising an inner surface defining a passageway, the sleeve extending along a longitudinal axis between a proximal end and an opposite distal end, the proximal end comprising a groove in the inner surface;
- a biasing element positioned partially in the groove;
- and
- a shaft disposed in the passageway, the shaft comprising an outer surface, a first engagement portion, and a second engagement portion,
- wherein:
- the sleeve is translatable relative to the shaft in an axial direction, along the longitudinal axis;
- the biasing element creates friction between the sleeve and the shaft, limiting relative axial motion between the sleeve and shaft, when the biasing element engages the outer surface, the first engagement portion, and the second engagement portion;
- when the biasing element engages the outer surface, a first amount of translational force is required to overcome the friction to move the sleeve relative to the shaft axially;
- when the biasing element engages the first engagement portion, a second amount of translational force, greater than the first amount of translational force, is required to overcome the friction to move the sleeve relative to the shaft axially;
- and
- when the biasing element engages the second engagement portion, a third amount of translational force, greater than the first amount of translational force, is required to overcome the friction to move the sleeve relative to the shaft axially.
8 more elements
Dependencies are inferred from the claim text.