Plastic Union with Integral Locking Structure

a technology of locking structure and plastic union, which is applied in the direction of pipe joints, pipe joints, pipe couplings, etc., can solve problems such as leakage at the union, and achieve the effect of facilitating the connection and disconnection of the device, reducing or eliminating the loosening of the nu

Active Publication Date: 2019-10-31
MAGIC PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The apparatus described in this patent reduces the risk of a nut coming loose due to vibration or torque. It is used to connect a device, like a centrifugal pump, to a piping system. The apparatus has a tail piece that attaches to the piping system and a nut member that attaches to the device. A biasing means is used to keep the two parts in locked engagement. This prevents the nut from coming loose and allows for a secure connection between the device and the piping system.

Problems solved by technology

For example, if the end device is a centrifugal pump with the male end on the suction side of the impeller housing, as typical for a home spa, the entire pump can be torqued by the starting and stopping of the pump motor, which can cause the nut to come loose, resulting in leakage at the union.

Method used

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  • Plastic Union with Integral Locking Structure
  • Plastic Union with Integral Locking Structure
  • Plastic Union with Integral Locking Structure

Examples

Experimental program
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Embodiment Construction

[0020]Referring specifically to the figures, FIG. 1 shows an embodiment of the disclosed locking union 10 which is used to connect a device 100, in this case a centrifugal pump, to a piping system 110. The device 100, whether centrifugal pump or other device such as a valve or fitting, comprises a male nipple 102 which extends outwardly from the device, as shown in FIG. 2. Male nipple 102 comprises external threads 104. The piping system 110 can be any continuation of piping which is connected to the device by the locking union 10, such as irrigation piping, nozzles for a hot tub or spa, or similar systems.

[0021]As best shown in FIG. 3, the locking union 10 comprises a tail piece 20 and a cylindrical nut member 50, which, but for the additional features described herein, function as pipe unions in the art, with tail piece 20 slidably received into cylindrical nut member 50, with a portion of the tail member, including the distal end 22, extending through an opening at the end of the...

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Abstract

A plastic pipe union has an integral locking mechanism which is activated when nut member of the union is sufficiently tightened to the threads of an adjoining male nipple. The nut member and the tail piece of the plastic union each have matching engagement surfaces, where each engagement surface has a scalloped profile. Once sufficiently tightened, tactile feedback is provided to a personal manually tightening the nut member, indicating that the scalloped structures of the opposing engagement surfaces have interacted and reached a locked configuration.

Description

RELATED APPLICATIONS[0001]This is a continuation of U.S. patent application Ser. No. 15 / 836,698 filed on Dec. 8, 2017 to which application this inventor claims domestic priority.BACKGROUND OF THE INVENTION[0002]The present application generally relates to pipe fittings fabricated from plastic materials, and more specifically to pipe unions fabricated from plastic materials. Polyvinyl Chloride (PVC) is the most widely used plastic piping material. However other thermoplastic materials utilized for fabricating pipe and pipe fittings, including, but not limited to, Acrylonitrile-Butadiene-Styrene (ABS), Chlorinated Polyvinyl Chloride (CPVC), Polyethylene (PE), and Cross-Linked Polyethylene (PEX). When utilized herein, the term “plastic” is to be interpreted as to including all of these materials.[0003]Among the fittings fabricated from plastic are pipe unions. Unions are designed to allow quick and convenient disconnection of pipes for assembly, maintenance and repair. In using a pipe ...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): F16L47/04F16L19/025
CPCF16L19/025F16L47/04F16L19/005F16L2201/10
InventorSARNO, JOHN
OwnerMAGIC PLASTICS