Two-prong plug of a single lead set for supplying fieldbus communication and power from a handheld maintenance tool in a hazardous area

Patent metadata

Field	Value
Publication number	US-10270215-B2
Application number	US-201715653212-A
Country	US
Kind code	B2
Filing date	Jul 18, 2017
Priority date	Apr 9, 2015
Publication date	Apr 23, 2019
Grant date	Apr 23, 2019

Abstract

A connector assembly for a portable field device testing includes a two-wire communication line to provide communication between a handheld maintenance tool and a field device, a first two-prong plug to provide power and communication signals to the field device and a shunt plug to provide power to the field device using the two-wire communication line.

First claim

What is claimed is:

1. A two-prong plug for connecting a handheld maintenance device to a field device, the two-prong plug comprising:
a plug body;
a first prong and a second prong;
a two-wire communication line having a terminal end terminating in the plug body, wherein a first wire at the terminal end of the two-wire communication line is connected to one of the first prong and the second prong and a second wire at the terminal end of the two-wire connection line is connected to the other of the first prong and the second prong of the two-prong plug;
a one-jack receptacle disposed in the plug body and electrically connected to one of the first prong and second prong, the one-jack receptacle arranged for receiving a prong of a further plug.

2. The two-prong plug of claim 1 , wherein the first wire at the terminal end of the two-wire communication line is connected to the first prong and the one-jack receptacle is electrically connected to the first prong.

3. The two-prong plug of claim 2 , wherein the second prong is electrically isolated from the one-jack receptacle.

4. The two-prong plug of claim 2 , wherein the second prong does not electrically connect to the one-jack receptacle.

5. The two-prong plug of claim 2 , wherein the one-jack receptacle is electrically connected to the first wire at the terminal end of the two-wire communication line.

6. The two-prong plug of claim 5 , wherein the one-jack receptacle is configured to indirectly connect the first wire at the terminal end of the two-wire communication line to a power supply.

7. The two-prong plug of claim 5 , wherein the one-jack receptacle is axially aligned with the first prong.

8. The two-prong plug of claim 1 , wherein the two-wire communication line includes a different terminal end, wherein a first wire at the different terminal end is configured to electrically connect with a first terminal of an electronic device and a second wire at the different terminal end is configured to electrically connect with a second terminal of the electronic device.

9. The two-prong plug of claim 8 , wherein the different end of the two-wire communication line terminates in a second plug body.

10. The two-prong plug of claim 8 , wherein the different end of the two-wire communication line terminates in a lug.

11. The two-prong plug of claim 8 , wherein the first wire at the terminal end is electrically coupled to the first wire at the different terminal end, and the second wire at the terminal end is electrically coupled to the second wire at the different terminal end.

12. The two-prong plug of claim 8 , wherein at the different terminal end of the two-wire communication the first wire includes a threaded connector to screw into the first terminal of the electronic device and the second wire includes a threaded connector to screw into the second terminal of the electronic device.

13. The two-prong plug of claim 1 , wherein the body includes first and second parallel surfaces, wherein the one-jack receptacle is disposed in the first surface, the two-wire communication line disposed through the first surface, and the first and second prongs extend away from the second surface of the body.

14. The two-prong plug of claim 1 , comprising only one receptacle, wherein the one receptacle is the one-jack receptacle.

15. A two-prong plug for connecting a handheld maintenance device to a field device, the two-prong plug comprising:
a plug body;
a first prong and a second prong extending from the plug body;
a two-wire communication line having a terminal end terminating in the plug body, wherein a first wire at the terminal end of the two-wire communication line is connected to the first prong and a second wire at the terminal end of the two-wire connection line is connected to the second prong of the two-prong plug;
a receptacle electrically connected to the first prong for receiving a prong of a further plug, the receptacle extending through the plug body.

16. The two-prong plug of claim 15 , wherein the plug body includes a first surface and a second surface, the receptacle extending through the plug body from the first surface, and the first prong and second prong extending away from the plug body from the second surface.

17. The two-prong plug of claim 16 , wherein the first prong, second prong, and receptacle extend in a direction perpendicular to the first surface of the plug body.

18. The two-prong plug of claim 16 , wherein the first surface and the second surface are parallel.

19. The two-prong plug of claim 15 , wherein the first prong and the second prong are parallel.

20. The two-prong plug of claim 15 , wherein the receptacle and the first prong are axially aligned.

21. A two-prong plug for connecting a handheld maintenance device to a field device, the two-prong plug comprising:
a plug body;
a first prong and a second prong;
a two-wire communication line having a terminal end terminating in the plug body, wherein a first wire at the terminal end of the two-wire communication line is connected to the first prong and a second wire at the terminal end of the two-wire connection line is connected to the second prong of the two-prong plug;
a one-jack receptacle electrically connected to the first prong for receiving a prong of a further plug; and
wherein the second prong is electrically isolated from the one-jack receptacle.

22. A two-prong plug for connecting a handheld maintenance device to a field device, the two-prong plug comprising:
a plug body;
a first prong and a second prong;
a two-wire communication line having a terminal end terminating in the plug body, wherein a first wire at the terminal end of the two-wire communication line is connected to one of the first prong and the second prong and a second wire at the terminal end of the two-wire connection line is connected to the other of the first prong and the second prong of the two-prong plug;
only one receptacle, wherein the one receptacle is a one-jack receptacle electrically connected to one of the first prong and second prong for receiving a prong of a further plug.

Assignees

• Fisher Rosemount Systems Inc

Inventors

• Dewey Alan Roger
• Russell Iii Alden C
• Benson Roger
• Ferguson Anthony
• Toepke Todd M

Classifications

• G01R1/0408

  Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets (G01R1/067 takes precedence; mass production testing systems G01R31/59; testing of connections G01R31/66; for testing printed circuit boards G01R31/2808) · CPC title

• G01R31/2834

  Automated test systems [ATE]; using microprocessors or computers (G01R31/317 takes precedence; ATE for detection of defective computer hardware G06F11/2736) · CPC title

• H01R13/68

  with built-in fuse · CPC title

• G01R31/2851

  Testing of integrated circuits [IC] (G01R31/317 takes precedence; testing individual devices G01R31/26; testing printed circuits G01R31/2801) · CPC title

• H01R31/08 Primary

  Short-circuiting members for bridging contacts in a counterpart · CPC title