Temporary fasteners

Patent metadata

Field	Value
Publication number	US-11434951-B2
Application number	US-201916355469-A
Country	US
Kind code	B2
Filing date	Mar 15, 2019
Priority date	Aug 26, 2008
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

A fastener is provided that includes a housing body including a bore extending along a longitudinal axis from a proximal end of the housing body, a housing body anti-rotation part, and a reduced diameter opening at a distal end of the housing body, a collet body partially translating within the housing body bore, having a collet body anti-rotation part positioned at least partially within the housing body, and a plurality of clamping fingers axially extending from a wall portion of the collet body, and a removable bushing positioned at least partially in the housing body bore. Rotation of the collet body is substantially prevented by an interaction between the housing body anti-rotation part and the collet body anti-rotation part during fastener clamping and unclamping and the removable bushing and the reduced diameter opening in the bore prevent escapement of the collet body anti-rotation part from the housing body.

First claim

What is claimed:

1. A fastener comprising:
a housing body including a bore extending along a longitudinal axis from a proximal end of the housing body, a housing body anti-rotation part, and a reduced diameter opening at a distal end of the housing body;
a collet body profiled to partially translate within the housing body bore, having a collet body anti-rotation part positioned at least partially within the housing body, and having a plurality of clamping fingers axially extending from a wall portion of the collet body;
a threaded rod including a threaded section that threadingly engages a threaded section of the collet body; and
a removable bushing positioned at least partially in the housing body bore;
where rotation of the collet body is substantially prevented by an interaction between the housing body anti-rotation part and the collet body anti-rotation part during fastener clamping and unclamping;
where the removable bushing and the reduced diameter opening in the bore prevent escapement of the collet body anti-rotation part from the housing body;
where rotation of the threaded rod in opposite directions causes the collet body to translate in opposing directions without rotating in relation to the housing body to induce axial clamping and unclamping and where an axial position of the threaded rod;
where the housing body anti-rotation part includes polygonal cross-section complimentary profiled with a polygonal cross-section of the collet body anti-rotation part and where the housing body includes a wall with an interior surface that forms the housing body anti-rotation part; and
where the threaded rod and the collet body are designed to threadingly engage one another while a portion of the threaded rod is positioned between the plurality of clamping fingers and the plurality of clamping fingers extend inwardly toward a collet body axis.

2. The fastener of claim 1 , further comprising a drive nut attached a proximal end of the threaded rod.

3. The fastener of claim 2 , where the drive nut is positioned axially exterior to the housing body.

4. The fastener of claim 1 , where the threaded rod has an axial length equal to or greater than a sum of the axial lengths of the housing body and the collet body.

5. The fastener of claim 1 , where the distal end of the housing body has a diameter less than a diameter of a head of the collet body.

6. A fastener comprising:
a housing body including a bore extending along a longitudinal axis from a proximal end of the housing body, a housing body anti-rotation part, and a reduced diameter opening at a distal end of the housing body;
a collet body profiled to partially translate within the housing body bore, having a collet body anti-rotation part positioned at least partially within the housing body, and a plurality of clamping fingers axially extending from a wall portion of the collet body;
a threaded rod threadingly engaged with an inner threaded portion of the collet body, where rotation of the threaded rod in opposite directions causes the collet body to translate in opposing directions in relation to the housing body to induce axial clamping and unclamping; and
a removable bushing positioned at least partially in the housing body bore; and
a drive nut coupled to a proximal end of the threaded rod and including a lower axial side that is positioned axially above the removable bushing;
where rotation of the collet body is substantially prevented during the axial translation by an interaction between the housing body anti-rotation part and the collet body anti-rotation part during fastener clamping and unclamping;
where the removable bushing and the reduced diameter opening in the bore prevent escapement of the collet body anti-rotation part from the housing body;
where the housing body anti-rotation part includes polygonal cross-section complimentary profiled with a polygonal cross-section of the collet body anti-rotation part and where the housing body includes a wall with an interior surface that forms the housing body anti-rotation part; and
where the threaded rod and the collet body are designed to threadingly engage one another while a portion of the threaded rod is positioned between the plurality of clamping fingers and the plurality of clamping fingers extend inwardly toward a collet body axis.

7. The fastener of claim 6 , where the drive nut has a polygonal cross-section.

8. The fastener of claim 6 , where the removable bushing has an annular shape.

9. A fastener comprising:
a housing body including a bore extending along a longitudinal axis from a proximal end of the housing body, a housing body anti-rotation part, and a reduced diameter opening at a distal end of the housing body;
a collet body profiled to partially translate within the housing body bore, having a collet body anti-rotation part positioned at least partially within the housing body, and a plurality of clamping fingers axially extending from a wall portion of the collet body; and
a threaded rod threadingly engaged with an inner threaded portion of the collet body and a threaded portion of the housing body, where rotation of the threaded rod in opposite directions causes the collet body to translate in opposing directions in relation to the housing body to induce clamping and unclamping;
a removable bushing positioned at least partially in the housing body bore; and
a drive nut coupled to a proximal end of the threaded rod and positioned axially above the removable bushing;
where rotation of the collet body is substantially prevented during the axial translation by an interaction between the housing body anti-rotation part and the collet body anti-rotation part during fastener clamping and unclamping;
where the removable bushing and the reduced diameter opening in the bore prevent escapement of the collet body anti-rotation part from the housing body;
where the housing body anti-rotation part include a plurality of facets complimentary profiled with a plurality of facets in the collet body anti-rotation part;
where the plurality of clamping fingers extend inwardly toward the longitudinal axis of the fastener in an unclamped configuration and are radially expanded in a clamped configuration;
where the housing body anti-rotation part includes polygonal cross-section complimentary profiled with a polygonal cross-section of the collet body anti-rotation part and where the housing body includes a wall with an interior surface that forms the housing body anti-rotation part and an exterior surface that has a polygonal cross-section;
where the threaded rod and the collet body are designed to threadingly engage one another while a portion of the threaded rod is positioned between the plurality of clamping fingers and the plurality of clamping fingers extend inwardly toward a collet body axis.

10. The fastener of claim 9 , where the drive nut is positioned axially exterior to the housing body.

Assignees

• Centrix Inc

Inventors

• Mcclure Travis D

Classifications

• F16B19/109 Primary

  Temporary rivets, e.g. with a spring-loaded pin (special clamping devices for workpieces to be riveted together, e.g. operating through the rivet holes B21J15/42; hand tools for temporarily connecting sheets before or during assembly operations B25B31/005) · CPC title

• F16B13/0833

  with segments or fingers expanding or tilting into an undercut hole (F16B13/0858 takes precedence) · CPC title

• F16B33/002

  Means for preventing rotation of screw-threaded elements (F16B39/00 takes precedence) · CPC title

• F16B39/34

  Locking by deformable inserts or like parts · CPC title

• F16B13/06 Primary

  combined with expanding sleeve {(F16B13/045 and F16B13/08 take precedence)} · CPC title