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US 5,537,750 AGranted
Folding knife with double side lock mechanism
AssigneeBuck Knives, Inc.
InventorsBrett P. Seber, Roy L. Helton, Jr.
Life of this patent
Estimating the term…
Abstract
A folding knife has first and second blades pivotably mounted about a common pivot pin to move between their respective open and closed positions. Preferably, the two blades pivot in opposite directions about the pivot pin. A side lock plate is positioned between the first blade and the second blade. The side lock plate includes a first finger biased toward the first blade to engage the first blade when the first blade is in its open position, and a second finger biased toward the second blade to engage the second blade when the second blade is in its open position. The fingers can be independently depressed to unlock the blades and permit them to be closed.
Claims19
A folding knife, comprising:
- a first blade pivotably mounted to move between a first blade open position and a first blade closed position;
- a second blade pivotably mounted to move between a second blade open position and a second blade closed position;
- side lock means for permitting independently controllable opening and closing of the first and second blades, the side lock means being positioned between the first blade and the second blade and including
- first blade side lock means for releasably locking the first blade in a first blade open position, and
- second blade side lock means for releasably locking the second blade in a second blade open position, wherein the side lock means comprises a single plate slotted along a portion of its length to define a plate central region, a first finger, and a second finger;
- and
- a common pivot pin about which the first blade and the second blade pivot.
4 more elements
A folding knife, comprising:
- an elongated knife body having a first end;
- a first blade pivotably mounted to the first end of the knife body to move between a first blade open position and a first blade closed position;
- a second blade pivotably mounted to the first end of the knife body to move between a second blade open position and a second blade closed position;
- and
- a side lock plate positioned between the first blade and the second blade and including
- a first finger biased toward the first blade, the first finger engaging the first blade when the first blade is in the first blade open position, and
- a second finger biased toward the second blade, the second finger engaging the second blade when the second blade is in the second blade open position.
4 more elements
A folding knife, comprising:
- a side lock plate, there being defined for the side lock plate a first perpendicular direction extending outwardly from a first side of the side lock plate and a second perpendicular direction extending outwardly from a second side of the side lock plate, the side lock plate comprising
- a plate base,
- a T-shaped plate central region joined to the plate base and coplanar with the plate base,
- a first finger joined to the plate base and coplanar with the plate base at the point of joining, the first finger being bent along its length in the first perpendicular direction to a first finger locking position and having a first finger locking shoulder thereon at the end remote from the plate base, and
- a second finger Joined to the plate base and coplanar with the plate base at the point of joining, the second finger being bent along its length in the second perpendicular direction to a second finger locking position and having a second finger locking shoulder thereon at the end remote from the plate base;
- a first blade pivotably mounted to the side lock plate adjacent to the first side of the side lock plate to move between a first blade open position and a first blade closed position, the first blade having a first blade locking shoulder that engages the first finger locking shoulder when the blade is in the open position and the first finger is in the first finger locking position, but which is pivotable past the first finger locking shoulder to the first blade closed position when the first finger lies coplanar with the plate central region;
- and
- a second blade pivotably mounted to the side lock plate adjacent to the second side of the side lock plate to move between a second blade open position and a second blade closed position, the second blade having a second blade locking shoulder that engages the second finger locking shoulder when the blade is in the open position and the second finger is in the second finger locking position, but which is pivotable past the second finger locking shoulder to the second blade closed position when the second finger lies coplanar with the plate central region.
5 more elements
Dependencies are inferred from the claim text.