Method for removing an auxiliary contact device from a motor controller unit

• US 8,516,677 B2
• Filed: 06/08/2010
• Issued: 08/27/2013
• Est. Priority Date: 06/08/2010
• Status: Active Grant

• Current Assignee: R J Reynolds Tobacco Company (R. J. Reynolds Tobacco)
• Original Assignee: R J Reynolds Tobacco Company (R. J. Reynolds Tobacco)
• Inventors: Coleman, Benjamin Floyd Sr., Weaver, Robert Eugene, Van Hoorne, Charles Julius
• Primary Examiner(s): TRINH, MINH N
• Application Number:
  US12/796,006
• Publication Number:
  US 20110296659A1
• Time in Patent Office: 1,176 Days
• Field of Search: 294/261, 294/265
• US Class Current: 29/426.1
• CPC Class Codes: B25B 27/005 for pulling off battery terminals
• CPC Class Codes: H01H 2300/056 Tools for actuating a switch
• CPC Class Codes: H01H 50/045 Details particular to contactors H01H50/042 takes precedence
• CPC Class Codes: H01H 50/545 Self-contained, easily replaceable microswitches
• CPC Class Codes: Y10T 29/49815 Disassembling
• CPC Class Codes: Y10T 29/49822 by applying force
• CPC Class Codes: Y10T 29/53283 Means comprising hand-manipulatable implement

Abstract

A method and associated apparatus are provided for removing an auxiliary contact device from a motor starter assembly engaged with a motor controller unit of a motor control center. The method includes engaging an extraction tool with a securement member operably engaged between the auxiliary contact device and the motor starter assembly. The extraction tool includes a handle portion and a securement-engaging portion. The handle portion extends along the auxiliary contact device for the securement-engaging portion to engage the securement member. The method further includes exerting an axial force on the handle portion such that the handle portion cooperates with the securement-engaging portion to disengage the securement member from between the auxiliary contact device and the motor starter assembly, and to disengage the electrically-conductive engagement between the auxiliary contact device and the motor starter assembly, to remove the auxiliary contact device from the motor starter assembly.

Claims

1. A method for removing an elongate auxiliary contact device from a motor starter assembly engaged with a motor controller unit of a motor control center, the auxiliary contact device having opposed ends along a major dimension axis and having a securement member engaged with one of the opposed ends, the securement member being configured to interact with the motor starter assembly to secure the one of the opposed ends of the auxiliary contact device in electrically-conductive engagement with the motor starter assembly, the method comprising:

extending an elongate extraction tool along the major dimension axis of the auxiliary contact device so as to engage a securement-engaging portion of the extraction tool with the securement member securing the one of the opposed ends of the auxiliary contact device in electrically-conductive engagement with the motor starter assembly, such that a handle portion of the extraction tool, the handle portion extending from the securement-engaging portion, extends along the auxiliary contact device outwardly of the motor starter assembly; and

exerting an axial force on the handle portion, the securement-engaging portion being responsive to the axial force to disengage the securement member from the motor starter assembly, so as to disengage the electrically-conductive engagement between the auxiliary contact device and the motor starter assembly, and to remove the auxiliary contact device along the major dimension axis thereof away from the motor starter assembly.

2. A method according to claim 1 wherein extending an elongate extraction tool further comprises extending an elongate extraction tool comprised of a non-conductive material along the major dimension axis of the auxiliary contact device so as to engage the securement-engaging portion of the extraction tool with the securement member.

3. A method according to claim 1 wherein extending an elongate extraction tool further comprises extending an elongate extraction tool along the major dimension axis of the auxiliary contact device so as to insert a beveled tip portion of the securement-engaging portion of the extraction tool between the securement member and the motor starter assembly.

4. A method according to claim 1 wherein extending an elongate extraction tool further comprises extending an elongate extraction tool along the major dimension axis of the auxiliary contact device so as to at least partially insert the securement-engaging portion of the extraction tool, the securement-engaging portion being configured to have a substantially V-shaped profile, between the securement member and the motor starter assembly.

5. A method according to claim 1 wherein extending an elongate extraction tool further comprises extending an elongate extraction tool along the major dimension axis of the auxiliary contact device so as to at least partially insert the securement-engaging portion of the extraction tool, the securement-engaging portion being configured to have a substantially L-shaped profile, between the securement member and the motor starter assembly.

6. A method according to claim 1 wherein extending an elongate extraction tool further comprises extending an elongate extraction tool comprised of a resilient material along the major dimension axis of the auxiliary contact device so as to engage the securement-engaging portion of the extraction tool with the securement member.