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Patent Searching and Data


Title:
AUTOMATIC DOUBLE-ACTION FASTENER INSTALLATION TOOL
Document Type and Number:
WIPO Patent Application WO/2019/108703
Kind Code:
A4
Abstract:
A tool for installing a blind fastener including a core bolt and a core nut is provided. The tool includes a driving member, a collet driven by the driving member for engaging the core bolt, and an external sleeve for holding the core nut and preventing the core nut from rotating during installation of the blind fastener. The external sleeve is movable between a first position in which the external sleeve is driven by the collet to rotate with the collet and a second position in which the external sleeve is stationary despite rotating action of the collet.

Inventors:
COBZARU, Cristinel (26926 St. Julian Cir, Murrieta, CA, 92563, US)
Application Number:
US2018/062921
Publication Date:
July 25, 2019
Filing Date:
November 28, 2018
Export Citation:
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Assignee:
SPS TECHNOLOGIES, LLC (301 Highland Avenue, Jenkintown, PA, 19046, US)
International Classes:
B21J15/04; B21J15/10; B21J15/12; B21J15/14; B25B27/00; F16B19/10
Attorney, Agent or Firm:
JOHNS, Robert S. (Burris Law, PLLC300 River Place Drive Suite 177, Detroit MI, 48207, US)
Download PDF:
Claims:
AMENDED CLAIMS

received by the International Bureau on 24 May 2019 (24.05.2019)

What is claimed is:

1. A tool (100, 100’) for installing a blind fastener (30, 30’) including a core bolt (3, 3’) and a core nut (5, 5’), the tool (100, 100’) comprising:

a driving member (122, 122’);

a collet (116, 116’) driven by the driving member (122, 122') configured to engage the core bolt (3, 3’); and

an external sleeve (110, 110’) configured to hold the core nut (5, 5’) and configured to prevent the core nut (5, 5’) from rotating during installation of the blind fastener (30, 30’), the tool characterized by:

the external sleeve (110, 110’) being movable between a first position in which the external sleeve (110, 110') is driven by the collet (116, 116’) to rotate with the collet (116, 116’) and a second position in which the external sleeve (110, 110’) is stationary despite rotating action of the collet (116, 116’).

2. The tool (100, 100') according to Claim 1 , further comprising a nutrunner (104, 104'), the driving member (122, 122’) being a part of the nutrunner (104, 104’).

3. The tool (100, 100') according to Claim 1 , wherein the external sleeve (110, 110’) includes a first socket (120, 120’, 138) and a second socket (140, 140’).

4. The tool (100) according to Claim 3, further comprising a stationary nut (106), wherein the second socket (140) of the external sleeve (110) engages the collet (116) when the external sleeve (110) is in the first position, the first socket (138) of the external sleeve (110) engages the stationary nut (106) when the external sleeve (110) is in the second position.

5. The tool (100, 100’) according to Claim 3, wherein the collet (116, 116') includes a driving portion (134, 134’), wherein the first socket (120, 120’) is configured to hold the core nut (5, 5’), wherein the second socket (140, 140’) is configured to engage the driving portion (134, 134’) of the collet (116, 116').

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6. The tool {100’) according to Claim 5, wherein the driving portion (134’) defines a plurality of ramps (134’a) configured to aid engagement of the driving portion (134') with the second socket (140’).

7. The tool (100’) according to Claim 6, wherein the ramps (134’a) are helical ramps.

8. The tool (100, 100') according to Claim 1, further comprising a stationary nut (106, 106’), wherein the external sleeve (110, 110’) engages the collet (116, 116’) when the external sleeve (110, 110’) is in the first position, and the external sleeve (110, 110’) engages the stationary nut (106, 106') when the external sleeve (110, 110’) is in the second position.

9. The tool (100’) according to Claim 8, wherein the external sleeve (110') includes a set of first lugs (138’) and the stationary nut (106’) includes a set of second lugs (106’a) configured to engage the first lugs (138’) to inhibit relative rotation between the external sleeve (110’) and the stationary nut (106’) when the external sleeve (110’) is in the second position.

10. The tool according to Claim 1 , further comprising a first spring (108, 108’) axially biasing one of the collet (116, 116') and the external sleeve (110, 110') toward the second position.

11. The tool according to Claim 1, further comprising a stem ejector (114, 114’) configured to eject at least a portion of the blind fastener (30, 30’) from the tool (100, 100’).

12. A method of installing a blind fastener (30, 30’) including a bolt (3, 3’) and a nut (5, 5’), the method comprising:

positioning a tool (100, 100’) in a first position wherein a collet (116, 116’) of the tool (100, 100’) engages a handling portion of the bolt (3, 3’) and a sleeve (110, 110') of the tool (100, 100’) engages a handling portion of the nut (5, 5’), wherein in the first position the collet (116, 116’) is rotatable relative to the sleeve (110, 110’);

18 rotating the collet (116, 116’) relative to the sleeve (110, 110’) to rotate the bolt (3, 3’) relative to the nut (5, 5’) until the handling portion of the bolt (3, 3') breaks off;

moving the tool (100, 100') to a second position wherein the sleeve (110, 110') remains engaged with the nut (5, 5’), wherein in the second position the collet (116, 116’) is coupled to the sleeve (110, 110’) to rotate the sleeve (110, 110’);

rotating the collet (116, 116’) to rotate the sleeve (110, 110’) until the handling portion of the nut (5, 5’) breaks off.

13. The method according to Claim 12, further comprising retracting the tool (100, 100’) and ejecting the handling portions of the bolt (3, 3') and nut (5, 5’) from the tool.

14. The method according to Claim 12, wherein when in the first position, the sleeve (110, 110’) is rotationally stationary.

15. The method according to Claim 12, wherein moving the tool (100, 100’) from the first position to the second position includes moving the tool (100, 100’) axially.

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