Folding knife with locking linkage assembly
AssigneeGB II Corporation dba Columbia River Knife & Tool Company
InventorJoseph Caswell
Life of this patent
Estimating the term…
Abstract
In one representative embodiment, a folding knife comprises a blade having a tang portion, a first linking element, a second linking element, and a handle. The blade can be translatable between a storage position and a use position. The first linking element can be pivotably coupled to the tang portion at a first pivot axis and the second linking element can be pivotably coupled to the tang portion at a second pivot axis. The handle can be pivotably coupled to the first and second linking elements at third and fourth pivot axes, respectively. The handle can have a first locking surface configured to resist movement of the blade in a first direction and a second locking surface configured to resist movement of the blade in an opposing second direction.
Claims20
A folding knife, comprising:
- a blade having a tang portion, the blade being translatable between a storage position and a use position;
- a first linking element pivotably coupled to the tang portion at a first pivot axis;
- a second linking element pivotably coupled to the tang portion at a second pivot axis;
- a handle pivotably coupled to the first linking element at a third pivot axis and pivotably coupled to the second linking element at a fourth pivot axis, the handle having a first locking surface configured to resist movement of the blade in a first direction, and a second locking surface configured to resist movement of the blade in an opposing second direction.
A folding knife, comprising:
- a blade having first and second engagement surfaces, the blade being translatable between a storage position and a use position;
- a linkage assembly comprising
- a first linking element having a first end portion and a second end portion, the first end portion being pivotably coupled to the tang portion at a first pivot axis, and
- a second linking element having a first end portion and a second end portion, the first end portion being pivotably coupled to the tang portion at a second pivot axis;
- and
- a handle pivotably coupled to the second end portion of the first linking element at a third pivot axis and pivotably coupled to the second end portion of the second linking element at a fourth pivot axis, the handle having first and second locking surfaces configured to engage the first and second engagement surfaces of the blade to resist movement of the blade when a force is applied to the blade at a location distal to the second pivot axis.
A folding knife, comprising:
- a handle comprising a grasping portion;
- a protrusion extending laterally from the handle, the protrusion having a first locking surface and a second locking surface;
- a blade having a tang portion comprising a first edge portion and a second edge portion, the blade being translatable relative to the handle between a storage position and a use position;
- a linkage assembly pivotably coupling the handle to the blade;
- wherein when the blade is in the use position, the first locking surface engages the first edge portion to resist movement of the blade in a first direction and the second locking surface engages the second edge portion to resist movement of the blade in a second direction.
Dependencies are inferred from the claim text.