Fastener extractor device

Patent metadata

Field	Value
Publication number	US-12403574-B2
Application number	US-202117509633-A
Country	US
Kind code	B2
Filing date	Oct 25, 2021
Priority date	Apr 27, 2016
Publication date	Sep 2, 2025
Grant date	Sep 2, 2025

Abstract

A fastener extractor tool is an apparatus that is used to remove a seized or damaged fastener. The apparatus may include at least one shank body and at least one torque-tool body. The at least one shank body allows the apparatus to be attached to an external torque tool. The torque-tool body engages the seized fastener to apply torque to dislodge said seized fastener. The at least one torque-tool body may include a plurality of laterally-bracing sidewalls and at least one engagement feature. The plurality of laterally-bracing sidewalls engage with the seized fastener to efficiently transfer torque from the external torque tool to the seized fastener. The at least one engagement feature is an engagement cavity that forms at least one engagement tooth on the at least one torque-tool body. The at least one engagement tooth engages the seized fastener to ensure torque is transferred to the seized fastener.

First claim

What is claimed is:

1. A fastener extractor device comprising:
at least one shank body;
at least one torque-tool body;
a drive head;
a first base;
a second base;
an external thread;
a tubular sleeve;
an internal thread;
the drive head being terminally and concentrically connected to the shank body;
the torque-tool body being terminally and concentrically connected to the shank body;
the external thread extending along the shank body, in between the torque-tool body and the drive head;
the shank body being adjacently connected to the second base, opposite to the first base;
the torque-tool body comprising a plurality of laterally-bracing sidewalls and at least one engagement feature;
the plurality of laterally-bracing sidewalls being radially positioned about a rotation axis of the torque-tool body;
each of the plurality of laterally-bracing sidewalls comprising a first lateral edge, a second lateral edge, and a bracing surface;
the first lateral edge and the second lateral edge being positioned opposite to each other across the bracing surface;
the first lateral edge and the second lateral edge each being oriented parallel with the rotation axis from the first base towards the second base;
at least part of a cross-section of the torque-tool body being uniform and non-tapering from the first base towards the second base;
the at least one engagement feature being integrated into a specific sidewall among the plurality of laterally-bracing sidewalls;
the at least one engagement feature forming an engagement tooth;
the engagement tooth being parallel with the rotation axis; and
the drive head being configured to receive percussion blows, wherein the engagement tooth is configured to cut into an internal sidewall of a fastener.

2. The fastener extractor device as claimed in claim 1 comprising:
an entire cross-section of the at least one engagement cavity comprising a curved portion and a straight portion;
the curved portion being positioned adjacent to the first lateral edge of the specific sidewall;
the straight portion being positioned adjacent to the curved portion, opposite the first lateral edge of the specific sidewall; and,
the straight portion extending from the curved portion to the second lateral edge of an adjacent sidewall.

3. The fastener extractor device as claimed in claim 2 comprising:
the engagement cavity traversing normal and into a portion of the bracing surface of the specific sidewall without traversing into a remaining portion of the bracing surface of the specific sidewall;
the remaining portion of the bracing surface of the specific sidewall being flat; and,
an arc length of the curved portion being larger than a length of the remaining portion of the bracing surface of the specific sidewall and less than a length of the straight portion.

4. The fastener extractor device as claimed in claim 1 , wherein the bracing surface is a flat surface.

5. The fastener extractor device as claimed in claim 1 , wherein the bracing surface is a concave surface.

6. The fastener extractor device as claimed in claim 1 , wherein the bracing surface is a convex surface.

7. The fastener extractor device as claimed in claim 1 comprising:
the external thread being laterally connected to the shank body.

8. The fastener extractor device as claimed in claim 7 comprising:
the internal thread being positioned within the tubular sleeve;
the internal thread extending along the tubular sleeve;
the internal thread traversing into the tubular sleeve;
the shank body being concentrically positioned within the tubular sleeve; and,
the internal thread being mechanically engaged to the external thread.

9. The fastener extractor device as claimed in claim 8 comprising:
a nut;
the nut being terminally and concentrically connected to the tubular sleeve; and,
the shank body being positioned within the nut.

10. The fastener extractor device as claimed in claim 1 comprising:
the at least one engagement feature comprises a plurality of engagement features;
the plurality of engagement features being radially positioned about the rotation axis of the torque-tool body; and,
each of the plurality of engagement features being integrated into a corresponding sidewall from the plurality of laterally-bracing sidewalls.

11. The fastener extractor device as claimed in claim 1 comprising:
the at least one shank body comprising a first shank body and a second shank body;
the at least one torque-tool body comprises a first torque-tool body and a second torque-tool body;
the drive head being terminally and concentrically connected to the at least one shank body;
the first shank body and the second shank body being positioned opposite to each other across the drive head;
the first torque-tool body being terminally and concentrically connected to the first shank body, opposite the drive head; and,
the second torque-tool body being terminally and concentrically connected to the second shank body, opposite the drive head.

12. The fastener extractor device as claimed in claim 11 comprising:
the at least one external thread comprises a first external thread and a second external thread;
the first external thread extending along the first shank body, in between the first torque-tool body and the drive head;
the first external thread being laterally connected to the first shank body;
the second torque-tool body being terminally and concentrically connected to the second shank body, opposite the drive head;
the second external thread extending along the second shank body, in between the second torque-tool body and the drive head; and,
the second external thread being laterally connected to the second shank body.

13. The fastener extractor device as claimed in claim 1 comprising:
at least one cavity-transition feature;
a plurality of wall-transition features;
the cavity-transition feature being terminally integrated into the engagement cavity, adjacent to the shank body; and,
each of the plurality of wall-transition features being terminally integrated into a corresponding laterally-bracing sidewall from the plurality of laterally-bracing sidewall, adjacent to the shank body.

14. The fastener extractor device as claimed in claim 13 comprising:
the cavity-transition feature comprising a first feature end and a second feature end;
the first feature end being positioned offset from the shank body;
the second feature end being positioned adjacent to the shank body; and,
the cavity-transition feature tapering from the first feature end to the second feature end.

15. The fastener extractor device as claimed in claim 13 comprising:
the at least one engagement cavity comprising a plurality of engagement cavities;
the at least one cavity-transition feature comprising a plurality of cavity-transition features; and,
each of the plurality of cavity-transition features being terminally integrated into a corresponding engagement cavity from the plurality of engagement cavities, adjacent to the shank body.

Assignees

• Grip Holdings Llc

Inventors

• Kukucka Paul
• Kukucka Thomas Stefan

Classifications

• B25B15/008

  Allen-type keys · CPC title

• B25B27/18 Primary

  withdrawing broken threaded parts or twist drills · CPC title

• B25B15/001

  characterised by material or shape of the tool bit · CPC title

• B25B13/065

  characterised by the cross-section of the socket · CPC title

• B25B13/04 Primary

  of ring jaw type · CPC title