# US 8,464,382 B2 · Multi-functional folding knife

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- Number: US 8,464,382 B2
- Document ID: US8464382B2
- Status: Granted
- Kind: B2
- Application number: 13/029,009
- Filed: 2011-02-16
- Published: 2012-08-16
- Granted: 2013-06-18
- Earliest claimed: 2011-02-16
- Applicants: Jitung Chu
- Inventors: Jitung Chu
- Web page: https://patentgrep.com/patent/US8464382B2

## CPC

- B26B 11/006: {Several functions combined in the blade}
- B26B 1/042: {by a spring biased locking lever pivoting around an axis parallel to the pivot axis of the blade}
- B26B: HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR (for harvesting A01D; for horticulture, for forestry A01G; for butchering or meat treatment A22; for manufactering or repairing footwear A43D; nail clippers or cutters A45D29/02; kitchen equipment A47J; {vegetable slicers, julienne cutters and similar devices and holders therefor, B26D3/28}; for surgical purposes A61B; for metal B23D; cutting by abrasive fluid jets B24C5/02; plier-like tools with cutting edges B25B7/22; pincers B25C11/02; handles for hand implements, in general B25G; guillotine-type cutters B26D; {perforating by non-mechanical means, e.g. by fluid jet, B26F1/26}; for erasing B43L19/00; for textile materials D06H)

## Abstract

A multi-functional folding knife has a handle and a blade. The blade is rotatably connected to the handle and has a cutting segment, a screwdriver head, a rope recess, a peak segment and an engaging mouth. The cutting segment is formed on a bottom of the blade and has a straight edge and a saw-tooth edge. The screwdriver head is formed on and protrudes from a top of the blade and is slotted and flat in shape. The rope recess is obliquely formed in the top of the blade adjacent to the screwdriver head and has a severing edge. The peak segment is formed on and protrudes from the top of the blade near the middle and adjacent to the rope recess. The engaging mouth is formed downwardly in the top of the blade between the peak segment and a rear end of the blade and has an engaging hook.

## Claims

### Claim 1

A multi-functional folding knife having a handle and a blade pivotally connected to the handle and characterized in that the blade of the multi-functional folding knife comprises:
a rear end;
a middle;
a front end;
a top;
a bottom;
a cutting segment formed on the bottom of the blade between the ends of the blade and having
a straight edge formed on the bottom of the blade between the front end and the middle of the blade; and
a saw-tooth edge formed on the bottom of the blade between the middle and the rear end of the blade and connected with the straight edge;
a screwdriver head formed on and protruding from the top of the blade at the front end of the blade and being slotted and flat in shape;
a rope recess obliquely formed in the top of the blade adjacent to the screwdriver head and having
a bottom; and
a severing edge formed on the bottom of the rope recess;
a peak segment formed on and protruding from the top of the blade near the middle of the blade and adjacent to the rope recess; and
an engaging mouth formed downwardly in the top of the blade between the peak segment and the rear end of the blade and having
a front end; and
an engaging hook formed on and protruding forwardly from the front end of the engaging mouth.

### Claim 2 (depends on 1)

The multi-functional folding knife as claimed in claim 1, wherein the blade further has
a first holding hole formed through the blade between the peak segment and the cutting segment; and
a second holding hole formed through the blade between the engaging mouth and the rear end of the blade.