Terminal feedthrough

Patent metadata

Field	Value
Publication number	US-9590400-B2
Application number	US-201514718681-A
Country	US
Kind code	B2
Filing date	May 21, 2015
Priority date	Sep 30, 2014
Publication date	Mar 7, 2017
Grant date	Mar 7, 2017

Abstract

A terminal feedthrough is provided. The terminal feedthrough includes a terminal pin insert having a pair of ends. A polymeric body having an externally threaded region is disposed about the terminal pin insert to form an interface with the terminal pin insert. At least one of threads of the externally threaded region and a cylindrical pin interface is configured to provide a flame-quenching pathway.

First claim

What is claimed is:

1. A terminal feedthrough comprising:
a terminal in insert having a pair of ends, wherein at least one of the pair of ends is configured to facilitate an electrical connection;
a polymeric body having an externally threaded region is disposed about the terminal in insert to form an interface with the terminal pin insert; and
wherein the interface is configured to provide a flame-quenching pathway.

2. The terminal feedthrough of claim 1 , wherein one end of the terminal pin insert is hexagonally shaped.

3. The terminal feedthrough of claim 1 , wherein one end of the terminal pin insert includes an internally threaded aperture.

4. The terminal feedthrough of claim 1 , wherein the polymeric body is formed of an injection moldable plastic.

5. The terminal feedthrough of claim 1 , wherein the terminal pin has a non-circular cross section.

6. The terminal feedthrough of claim 1 , wherein the polymeric body includes a collar having an outer diameter that is larger than a maximum outer diameter of the externally threaded region.

7. A flameproof coupling with increased safety connection comprising:
an enclosure having an internally-threaded aperture;
a terminal feedthrough threaded into the internally-threaded aperture, the terminal feedthrough including:
a terminal pin insert having a pair of ends;
a polymeric body disposed about the terminal pin insert to form an interface with the terminal pin insert, the polymeric body also having an externally threaded region engaged with the internally-threaded aperture, wherein the interface is configured to provide a flame-quenching pathway;
wherein the polymeric body includes a collar having an outer diameter that is larger than a maximum outer diameter of the externally threaded region, the collar being configured to provide necessary/creepage and clearance; and
a seal disposed about the polymeric body.

8. The flameproof coupling of claim 7 , wherein an interface between the externally threaded region and the internally-threaded aperture is configured to provide a flame quenching pathway.

9. The flameproof coupling claim 7 , wherein one end of the terminal pin insert is hexagonally shaped.

10. The flameproof coupling claim 7 , wherein one end of the terminal pin insert includes an internally threaded aperture for possible use as an increased safety connection.

11. The flameproof coupling claim 7 , wherein the polymeric body is formed of an injection moldable plastic.

12. The flameproof coupling claim 7 , wherein the terminal pin insert has a non-circular cross section.

13. The flameproof coupling of claim 7 , wherein the seal is an elastomeric seal.

14. The flameproof coupling of claim 7 , wherein the seal is disposed to bear against the enclosure to form an environmental seal.

Assignees

• Rosemount Inc
• Micro Motion Inc

Inventors

• Anderson Erik D
• Cota Jeffery A
• Messenger Samuel E
• Mayer Michael J
• Mikolichek Michael J
• Barto Michael W

Classifications

• H02G3/0412 Primary

  Heat or fire protective means (for fire in electric circuits A62C3/16) · CPC title

• H01R13/533

  Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure (H01R13/52 takes precedence) · CPC title

• H01R13/5202

  Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings · CPC title

• H02G3/0437

  Channels · CPC title