IP Library Granted Patent US 12,636,742
Granted Patent B2
US 12,636,742 · App. 18/341,612 · Granted May 26, 2026

Automated temporary fastener actuation apparatus and system

Inventors: Jeffrey T. Drewett (Fort Worth, TX); Geoffrey Robert Karpa (Benbrook, TX)
Assignee: Lockheed Martin Corporation
B23P19/04B25B31/005F16B19/109B23P2700/01
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Quick Facts
Patent No.
US 12,636,742
App. No.
18/341,612
Granted
May 26, 2026
Kind
B2
Abstract

A temporary fastener actuation tool includes a protrusion, multiple spring clips, and a bearing shaft. The protrusion includes a groove that matches a shape of an indentation of a temporary fastener. Each spring clip includes an end that is aligned with an end of the protrusion. The spring clips are configured to hold the indentation of the temporary fastener secure against the protrusion. The temporary fastener actuation tool further includes a first bearing that is coupled to the bearing shaft and is configured to contact a cylindrical body of the temporary fastener and rotate the cylindrical body of the temporary fastener in a first direction. The temporary fastener actuation tool further includes a second bearing coupled to the bearing shaft that is configured to contact a stem of the temporary fastener and to rotate the stem in a second direction. A motor shaft is coupled to the bearing shaft.

Claims (77)

1 . A temporary fastener actuation system comprising:

a temporary fastener comprising:

a cylindrical body comprising an indentation;

a compressible gasket;

a stem; and

a plurality of tines coupled to the stem and configured to:

expand when the stem is rotated a first direction, thereby securing the temporary fastener to a panel; and

contract when the stem is rotated a second direction, the second direction being opposite from the first direction;

a temporary fastener actuation tool comprising:

a protrusion comprising a groove that matches a shape of the indentation of the temporary fastener;

a plurality of spring clips, each spring clip comprising an end that is aligned with an end of the protrusion, the plurality of spring clips configured to hold the indentation of the temporary fastener secure against the protrusion;

a bearing shaft;

a first bearing coupled to the bearing shaft and configured to contact the cylindrical body of the temporary fastener and rotate the cylindrical body of the temporary fastener in the first direction;

a second bearing coupled to the bearing shaft and configured to contact the stem of the temporary fastener and rotate the stem of the temporary fastener in the second direction; and

a motor shaft coupled to the bearing shaft;

a rotary tool configured to:

couple to the motor shaft of the temporary fastener actuation tool;

rotate the motor shaft and the first bearing in the first direction while the second bearing is disengaged from the stem, thereby causing the cylindrical body of the temporary fastener to rotate; and

rotate the motor shaft and the second bearing in the second direction while the first bearing is disengaged from the cylindrical body, thereby causing the plurality of tines to contract; and

a collar configured to contact the cylindrical body of the temporary fastener and hold the cylindrical body of the temporary fastener stationary when the stem is rotated in the second direction.

2 . The temporary fastener actuation system of claim 1 , wherein the temporary fastener is used during a manufacturing process to temporarily secure the panel to another panel.

3 . The temporary fastener actuation system of claim 1 , wherein the rotary tool is a multi-function end effector (MFEE).

4 . The temporary fastener actuation system of claim 3 , wherein the temporary fastener actuation tool is coupled to the MFEE.

5 . The temporary fastener actuation system of claim 1 , wherein:

the temporary fastener actuation tool further comprises a spindle coupled to the motor shaft; and

the bearing shaft comprises a threaded end that couples the bearing shaft to the spindle.

6 . The temporary fastener actuation system of claim 1 , wherein the temporary fastener actuation tool is cylindrical in shape.

7 . The temporary fastener actuation system of claim 6 , wherein:

the protrusion and the plurality of spring clips are coupled to a first end of the temporary fastener actuation tool;

the first bearing is located proximate to the first end of the temporary fastener actuation tool;

the second bearing is located proximate to the first bearing; and

the first bearing and the second bearing are both tubular in shape such that at least a portion of the temporary fastener may be inserted through the first bearing and the second bearing.

8 . A temporary fastener actuation system comprising:

a temporary fastener actuation tool comprising:

a protrusion comprising a groove that matches a shape of an indentation of a temporary fastener;

a plurality of spring clips, each spring clip comprising an end that is aligned with an end of the protrusion, the plurality of spring clips configured to hold the indentation of the temporary fastener secure against the protrusion;

a bearing shaft;

a first bearing coupled to the bearing shaft and configured to contact a cylindrical body of the temporary fastener and rotate the cylindrical body of the temporary fastener in a first direction;

a second bearing coupled to the bearing shaft and configured to contact a stem of the temporary fastener and rotate the stem of the temporary fastener in a second direction; and

a motor shaft coupled to the bearing shaft;

a rotary tool configured to:

couple to the motor shaft of the temporary fastener actuation tool;

rotate the motor shaft and the first bearing in the first direction while the second bearing is disengaged from the stem, thereby causing the cylindrical body of the temporary fastener to rotate; and

rotate the motor shaft and the second bearing in the second direction while the first bearing is disengaged from the cylindrical body, thereby causing a plurality of tines of the temporary fastener to contract; and

a collar configured to contact a cylindrical body of the temporary fastener and hold the cylindrical body of the temporary fastener stationary when the stem is rotated in the second direction.

9 . The temporary fastener actuation system of claim 8 , wherein the temporary fastener is used during a manufacturing process to temporarily secure a panel to another panel.

10 . The temporary fastener actuation system of claim 8 , wherein the rotary tool is a multi-function end effector (MFEE).

11 . The temporary fastener actuation system of claim 10 , wherein the temporary fastener actuation tool is coupled to the MFEE.

12 . The temporary fastener actuation system of claim 8 , wherein:

the temporary fastener actuation tool further comprises a spindle coupled to the motor shaft; and

the bearing shaft comprises a threaded end that couples the bearing shaft to the spindle.

13 . The temporary fastener actuation system of claim 8 , wherein the temporary fastener actuation tool is cylindrical in shape.

14 . The temporary fastener actuation system of claim 8 , wherein:

the protrusion and the plurality of spring clips are coupled to a first end of the temporary fastener actuation tool;

the first bearing is located proximate to the first end of the temporary fastener actuation tool;

the second bearing is located proximate to the first bearing; and

the first bearing and the second bearing are both tubular in shape such that at least a portion of the temporary fastener may be inserted through the first bearing and the second bearing.

15 . A temporary fastener actuation tool comprising:

a protrusion comprising a groove that matches a shape of an indentation of a temporary fastener;

a plurality of spring clips, each spring clip comprising an end that is aligned with an end of the protrusion, the plurality of spring clips configured to hold the indentation of the temporary fastener secure against the protrusion;

a bearing shaft;

a first bearing coupled to the bearing shaft and configured to contact a cylindrical body of the temporary fastener and rotate the cylindrical body of the temporary fastener in a first direction;

a second bearing coupled to the bearing shaft and configured to contact a stem of the temporary fastener and rotate the stem of the temporary fastener in a second direction; and

a motor shaft coupled to the bearing shaft and configured to:

rotate with the first bearing in the first direction while the second bearing is disengaged from the stem, thereby causing the cylindrical body of the temporary fastener to rotate; and

rotate with the second bearing in the second direction while the first bearing is disengaged from the cylindrical body, thereby causing a plurality of tines of the temporary fastener to contract.

16 . The temporary fastener actuation tool of claim 15 , wherein the temporary fastener is used during a manufacturing process to temporarily secure a panel to another panel.

17 . The temporary fastener actuation tool of claim 15 , wherein the motor shaft of the temporary fastener actuation tool is configured to couple to a rotary tool.

18 . The temporary fastener actuation tool of claim 17 , wherein the rotary tool is a multi-function end effector (MFEE).

19 . The temporary fastener actuation tool of claim 15 , wherein:

the temporary fastener actuation tool further comprises a spindle coupled to the motor shaft; and

the bearing shaft comprises a threaded end that couples the bearing shaft to the spindle.

20 . The temporary fastener actuation tool of claim 15 , wherein:

the protrusion and the plurality of spring clips are coupled to a first end of the temporary fastener actuation tool;

the first bearing is located proximate to the first end of the temporary fastener actuation tool;

the second bearing is located proximate to the first bearing; and

the first bearing and the second bearing are both tubular in shape such that at least a portion of the temporary fastener may be inserted through the first bearing and the second bearing.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 26, 2023
From: DREWETT, JEFFREY T.; KARPA, GEOFFREY ROBERT
To: LOCKHEED MARTIN CORPORATION
Reel/Frame 064063/0648 →
Continuity (1)
Related Publication 20240424625A1 · Dec 26, 2024
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