# US 2013/0219706 A1 · Fastener and Material Remover

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- Number: US 2013/0219706 A1
- Document ID: US20130219706A1
- Status: Published application
- Kind: A1
- Application number: 13/773,899
- Filed: 2013-02-22
- Published: 2013-08-29
- Earliest claimed: 2012-02-23
- Inventors: Jeff David Brown
- Web page: https://patentgrep.com/patent/US20130219706A1

## CPC

- B23P 19/04: for assembling or disassembling parts
- B25D 11/104: {with rollers or balls as cam surface}
- B25D 11/108: {the rotation axis of the cam member being parallel but offset to the tool axis}
- B25D 17/02: Percussive tool bits {(drill bits for earth drilling E21B10/00)}
- B25D 2217/0061: related to cooling
- B25D 2217/0096: Details of lubrication means
- B25D 2250/275: Tools having at least two similar components
- Y10T 29/53: Means to assemble or disassemble
- Y10T 29/53835: having wedge operator
- Y10T 29/53909: Means comprising hand manipulatable tool
- Y10T 29/53943: Hand gripper for direct push or pull
- B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q)
- B25D: PERCUSSIVE TOOLS {(percussive machines for forging B21J; hand-held drilling machines, in general B23B45/00, for wood B27C3/08; drilling machines, used for mining or quarrying, with reciprocating tool which is turned intermittently when out of contact with the working face E21B1/00)}
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An apparatus for removal of fasteners. The apparatus comprises a motor, a rotary drive shaft, a striker mechanism operable to convert rotary motion into reciprocating linear motion and a reciprocating shear blade shaped and sized to shear off fasteners or split materials.

## Claims

### Claim 1

An apparatus for removing fasteners comprising:
a motor having a motor frame and an output shaft;
a drive shaft, operably connected to the output shaft of the motor;
a striker retention frame, fixed to and disposed about the drive shaft;
an array of rolling strikers disposed in the striker retention frame;
an axially-translatable strike plate, disposed adjacent to the rolling strikers;
an array of fixed strikers, disposed on the strike plate; and
a shear blade, operably connected to the strike plate.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the rolling strikers are generally-spherical.

### Claim 3 (depends on 1)

The apparatus of claim 1, wherein the fixed strikers are wedge-shaped.

### Claim 4 (depends on 1)

The apparatus of claim 1, wherein the rolling strikers are generally-cylindrical.

### Claim 5 (depends on 1)

The apparatus of claim 1, wherein the fixed strikers have a sinusoidal pattern.

### Claim 6 (depends on 1)

The apparatus of claim 1, wherein the rolling strikers are generally-conical.

### Claim 7 (depends on 1)

The apparatus of claim 1, wherein the striker retention frame comprises an array of axles extending radially from the drive shaft.

### Claim 8

An apparatus for removing fasteners comprising:
a motor;
a flywheel, driven by the motor;
a rotating striker retention frame, fixed to the flywheel;
a first array of rotating strikers disposed in the rotating striker retention frame;
a frame, disposed adjacent to the flywheel and axially-translatable with respect thereto;
an array of non-rotating strikers, disposed on the frame; and
a shear blade, operably connected to the frame.

### Claim 9 (depends on 8)

The apparatus of claim 8, wherein the rotating strikers are generally-spherical.

### Claim 10 (depends on 8)

The apparatus of claim 8, wherein the non-rotating strikers are wedge-shaped.

### Claim 11 (depends on 8)

The apparatus of claim 8, wherein the rotating strikers are generally-cylindrical.

### Claim 12 (depends on 8)

The apparatus of claim 8, wherein the non-rotating strikers have a sinusoidal pattern.

### Claim 13 (depends on 8)

The apparatus of claim 8, wherein the rotating strikers are generally-conical.

### Claim 14 (depends on 8)

The apparatus of claim 8, wherein the rotating striker retention frame comprises an array of axles extending radially from a hub of the flywheel.