# US 10,307,894 B1 · Die cast magnetic pad

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,307,894 B1
- Document ID: US10307894B1
- Status: Granted
- Kind: B1
- Application number: 15/935,786
- Filed: 2018-03-26
- Granted: 2019-06-04
- Earliest claimed: 2018-03-26
- Applicants: Harry Wong
- Inventors: Harry Wong
- Web page: https://patentgrep.com/patent/US10307894B1

## CPC

- B25B 5/163: {Jaws or jaw attachments}
- B25B 5/147: {for pipes}
- F16B 1/00: Devices for securing together, or preventing relative movement between, constructional elements or machine parts
- F16L 1/00: Laying or reclaiming pipes; Repairing or joining pipes on or under water
- B25B 5/102: {with at least one jaw sliding along a bar}
- F16B 2200/83: Use of a magnetic material
- B25B: TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
- F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D)
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL

## Abstract

Present invention teaches a magnetic pad to work with clamping tools where the magnet and protrusions on the top surface provide for easy aligning and connection from the clamping tool to the pad, relying primarily on the use of a ring-shaped magnet embedded in the top surface. The bottom surface provides flexible holding surface upon work pieces with two grooves of different sizes. The pad materials can be made from soft metals to eliminate marring the surface of work pieces.

## Claims

### Claim 1

A die cast magnetic pad, comprising:
a round disc having a top surface and a bottom surface;
a ring-shaped permanent magnet embedded in a central portion of said top surface and is flush with a lower level plane within the top surface;
a plurality of protrusions formed evenly spaced and next to an edge of the top surface, each of said protrusions contains an upper level tier flush with the edge of the top surface and a lower level tier flush with the lower level plane within the top surface and the embedded permanent magnet; and
a first v-groove and a second v-groove set at a 90-degree relationship, with two grooves intersecting each other at a center point of the bottom surface of said round disc, wherein the first v-groove is wider than the second v-groove.

### Claim 2 (depends on 1)

The pad of claim 1, wherein 4 protrusions of the plurality of protrusions are placed at 90 degrees apart around the edge of the top surface.

### Claim 3 (depends on 1)

The pad of claim 1, wherein 2 protrusions of the plurality of protrusions is 2 are placed at 180 degrees apart around the edge of the top surface.

### Claim 4 (depends on 1)

The pad of claim 1, wherein a material for the round disc is made of die cast material.

### Claim 5 (depends on 1)

The pad of claim 1, wherein the lower level plane is ring-shaped and concentrically enclosing the ring-shaped permanent magnet.