# US 2013/0152373 A1 · Method for Marking a Tool

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- Number: US 2013/0152373 A1
- Document ID: US20130152373A1
- Status: Published application
- Kind: A1
- Application number: 13/693,017
- Filed: 2012-12-03
- Published: 2013-06-20
- Earliest claimed: 2011-12-19
- Assignees: Pard Hardware Industrial Co., Ltd.
- Inventors: Da-Sen LIN
- Web page: https://patentgrep.com/patent/US20130152373A1

## CPC

- B23P 15/00: Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B21C 51/005: {Marking devices}
- B21K 5/00: Making tools or tool parts, e.g. pliers
- Y10T 29/4998: Combined manufacture including applying or shaping of fluent material
- Y10T 29/49988: Metal casting
- B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q)
- B21C: MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21K: MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS (making particular articles by working sheet metal without essentially removing material B21D; processing wire B21F; making pins, needles or nails B21G; making particular articles by rolling B21H; forging machines, pressing machines, hammering machines, in general B21J; making chains B21L; plating B23K)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method is disclosed for marking a tool. The includes the steps of forming a tool, making an indented mark in the tool, hardening the tool, coloring the tool to provide a color layer on the tool in and near the indented mark, clearing the tool of redundant colorant that overflows from the indented mark, black dying the tool to provide a black-dyed layer on the tool except the indented mark, and painting the tool to provide a transparent paint layer on the tool for glistering and rust-prevention.

## Claims

### Claim 1

A method for marking a tool, the method including the steps of:
forming a tool;
making an indented mark in the tool;
hardening the tool;
coloring the tool to provide a color layer on the tool in and near the indented mark;
clearing the tool of redundant colorant A that overflows from the indented mark;
black dying the tool to provide a black-dyed layer on the tool except the indented mark; and
painting the tool to form a transparent paint layer on the tool for glistering and rust-prevention.

### Claim 2 (depends on 1)

The method according to claim 1, further including the step of surface treatment between the steps of hardening and coloring to clear the tool of bur and roughen the indented mark.

### Claim 3 (depends on 2)

The method according to claim 2, wherein the step of surface treatment is selected from the group consisting of sand-blasting and grinding.

### Claim 4 (depends on 1)

The method according to claim 1, wherein the tool is selected from the group consisting of a socket, a wrench, a knife and a screwdriver.

### Claim 5 (depends on 1)

The method according to claim 1, wherein the step of clearing the tool of redundant colorant A is selected from the group consisting of grinding and vibration.

### Claim 6 (depends on 1)

The method according to claim 1, wherein the step of black dying is selected from the group consisting of black dying and provision of manganese phosphate.

### Claim 7 (depends on 1)

The method according to claim 1, wherein the step of forming the tool is selected from the group consisting of latching and casting.

### Claim 8 (depends on 1)

The method according to claim 1, wherein the step of providing the indented mark includes the step of pressing.

### Claim 9 (depends on 1)

The method according to claim 1, wherein the step of hardening includes the step of heat treatment.