Self locking threaded connector

a threaded connector, self-locking technology, applied in the direction of screw threaded joints, pipe joints, mechanical equipment, etc., can solve the problems of permanent welded, difficult to make threaded connections, and loose threaded connections, so as to resist loosening of threaded joints

Inactive Publication Date: 2006-02-16
PICKNEY ROBERT JR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The self-locking mechanism effectively prevents over-tightening, maintains a fluid-tight seal, and allows for easy disassembly, reducing the risk of part damage and leakage, even under vibration, while ensuring a secure connection.

Problems solved by technology

A disadvantage of this type of connection is that it is permanently welded in order to prevent fluid leaks.
However, even when there are in no internal pressures, as in a drain line, it may be difficult to make a threaded connection that effects a fluid tight seal and maintains a fluid tight seal over time.
This is particularly the case if the plumbing is subjected to vibration, such as the drain from a sink drain, garbage disposal or dishwasher.
In such cases the threaded connection may become loosened over time allowing leakage.
As it is not uncommon for drains such as sink drains and the like to be formed of plastic (such as PVC), over tightening may result in fractured or broken parts.
Over tightened joints are also not easily disassembled or undone when needed.

Method used

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Examples

Experimental program
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Embodiment Construction

[0017] Referring to the drawings, FIG. 1 shows the coupling of the present invention generally indicated at 10. The coupling includes a male part 12 comprising a pipe section 14 having exterior threads 16 at one end and a female part 18 having internal threads 20. The female part 18 is threaded to the external threads 16 on the male part male part so as to couple an unthreaded pipe section 22 to the pipe section 14.

[0018] In this respect the unthreaded pipe section has a flat flange 24 that is engaged by a collar 26 on the female part and pressed against an end face 28 of the male part upon threading the male and female parts together (see FIG. 2). Such a connection is common in plumbing fixtures such as in sink drains and the like.

[0019] Plumbing connections of the type described are not usually employed in situations where there is an internal pressure. Accordingly, making the connection finger tight usually is sufficient to prevent leakage through the joint. In some cases a gas...

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Abstract

A self-locking threaded connection including an externally threaded male part having a series of projections adjacent the trailing or last-to-be-threaded threads and an internally threaded female part having a series of detents adjacent the leading or first-to-be-threaded threads. As the parts are threaded together, the snap reception of the projections into the detents produce both audio and tactile responses indicating that the connection is made and near to a destructive over tightening.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a Continuation-in-Part of U.S. Ser. No. 10 / 891,399 filed Jul. 14, 2004.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT NONE REFERENCE TO A “SEQUENCE LISTING”[0002] Not applicable. BACKGROUND OF THE INVENTION [0003] 1. Field of the Invention [0004] This invention relates generally to a threaded connector, and more particularly but not by way of limitation, to a threaded connector that is self-locking as may be used either alone, or in combination with plumbing fixtures including but not limited to plumbing pipes and in particular to plumbing pipes subject to vibration such as garbage disposal drains and the like. [0005] 2. Description of Related Art [0006] Manufacturers have long used various sorts of connections to assure a tight connection that can be undone if necessary, especially in the plumbing industry. Often two pipes are joined together permanently using piping dope or other forms of permanent...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): F16L25/00
CPCF16L15/006
InventorPICKNEY, ROBERT JR.
OwnerPICKNEY ROBERT JR