IP Library Granted Patent US 7,913,398
Granted Patent B2
US 7,913,398 · App. 12/149,187 · Granted Mar 29, 2011

Folding knife with an unlocking mechanism

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Quick Facts
Patent No.
US 7,913,398
App. No.
12/149,187
Granted
Mar 29, 2011
Kind
B2
Abstract

A folding knife has a handle, a blade, a locking rod and an unlocking lever. The handle has a dorsal portion. The blade is pivotally mounted and selectively folded in the handle and has a notch. The notch is formed on a spine of the blade. The locking rod is mounted on the dorsal portion of the handle and has a locking end and a protrusion. The protrusion is formed on the locking end and engages the notch of the blade. The unlocking lever is pivotally mounted on the handle and has a pushing end and at least one propping block. The propping block protrudes from the unlocking lever and abuts the locking rod. Therefore, the folding knife allows users to release the blade by either directly pressing the locking rod or pushing the pushing end of the unlocking lever.

Claims (52)

1. A folding knife with an unlocking mechanism comprising

a handle having

a front;

a rear;

a dorsal portion extending from the front to the rear of the handle;

a ventral portion being opposite to the dorsal portion;

a first frame having

an outer surface;

a throughole being formed through the first frame near the front of the handle; and

an arch edge being near being near the dorsal portion of the handle;

a second frame being attached to the first frame and having

an edge;

an outer surface; and

an arch edge being formed on the second frame and corresponding to the arch edge of the first frame;

an arresting mechanism being mounted between the first and the second frames near the dorsal portion of the handle;

a chamber being formed between the first frame, second frame and the arresting mechanism; and

a first casing being mounted on the outer surface of the first frame and having

a concavity being formed on an edge of the first casing near the ventral portion of the handle and extending toward the front of the handle; and

a recess being formed in the first casing near the concavity;

a blade being pivotally mounted between the first frame and the second frame, being selectively folded into the chamber and having

a rear being pivotally mounted between the first frame and the second frame;

a spine; and

a notch being formed on the spine of the blade near the rear of the blade;

a locking rod being mounted between the arresting mechanism and the rear of the blade and having

a middle being pivotally mounted to the first frame the second frame;

a locking end being mounted near the front of the handle;

a releasing end being opposite to the locking end, being mounted between the arch edges of the first frame and the second frame and abutting the arresting mechanism;

an inner edge facing the chamber of the handle; and

a protrusion being formed on the inner edge near the locking end and corresponding to and selectively engaging the notch of the blade; and

an unlocking lever being slidably disposed in the recess and mounted on the outer surface of the first frame and having

a rib having

a pivoting end being pivotally mounted on the outer surface of the first frame;

a pushing end extending out from the pivoting end of the rib toward the ventral portion of the handle; and

two propping blocks respectively formed on and extending out from two sides of the pivoting end, extending through the throughhole and abutting the inner edge of the locking rod.

2. The folding knife as claimed in claim 1 , wherein the arresting mechanism has

a base being mounted between the first frame and the second frame near the rear of the handle and having

an elongated slot being formed through the base and extending toward the front of the handle; and

a stop arm being rectangular in shape and having

a first end being mounted in the elongated slot in the base; and

a second end extending toward the front of the handle.

3. The folding knife as claimed in claim 2 , wherein the unlocking lever further has a knob being mounted on the pushing end and abutting the concavity of the first casing.

4. The folding knife as claimed in claim 3 , wherein the handle further comprises a second casing being mounted on the outer surface of the second frame.

5. The folding knife as claimed in claim 4 , wherein

pivot holes are respectively formed through the first frame, the second frame, the first casing and the second casing near the front of the handle; and

the blade further has

a pivot hole being formed through the rear of the blade and aligning with the pivot holes of the first frame, the second frame, the first casing and the second casing of the handle; and

a pintle being mounted through the pivot holes of the first frame, the second frame, the first casing and the second casing of the handle and the blade.

6. The folding knife as claimed in claim 5 , wherein the first casing of the handle further has

an arch edge of the first casing corresponding to the arch edge of the first frame of the handle; and

the second casing of the handle further has

an arch edge of the second casing corresponding to the arch edge of the second frame of the handle.

7. The folding knife as claimed in claim 6 , wherein the stop arm of the arresting mechanism is a leaf spring.

Continuity (1)
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