Enhanced disconnect handle operators

• US 8,382,179 B2
• Filed: 03/29/2010
• Issued: 02/26/2013
• Est. Priority Date: 03/29/2010
• Status: Active Grant

• Current Assignee: Eaton Intelligent Power Limited (Eaton Corporation PLC.)
• Original Assignee: Eaton Corp. (Wisconsin) (Eaton Corporation PLC.)
• Inventors: Hamilton, Jonathan K., Morris, Robert Allan, Yee, Edgar
• Primary Examiner(s): KRAMER, DEAN J
• Application Number:
  US12/748,612
• Publication Number:
  US 20110232039A1
• Time in Patent Office: 1,065 Days
• Field of Search: 294/174, 294/209, 294/210, 294/24, 81/531, 811/247, 811/772, 164/26, 164/27, 151/444
• US Class Current: 294/210
• CPC Class Codes: B25G 1/04 telescopic; extensible; sectional
• CPC Class Codes: G05G 1/04 Controlling members for hand actuation by pivoting movement, e.g. levers
• CPC Class Codes: G05G 1/54 Controlling members specially adapted for actuation by auxiliary operating members or extensions; Operating members or extensions therefor (pedal extensions)
• CPC Class Codes: H01H 2300/056 Tools for actuating a switch
• CPC Class Codes: H01H 3/08 Turn knobs

Abstract

An extendable device engages and operates a handle mounted on an electrical switching apparatus. The extendable device includes a first linear portion and a second linear portion, each of the first and second linear portions having a first end and a second end, a handle adaptor extending away from the second end of one of the first and second linear portions and a retainer mechanism structured to engage the first linear portion and the second linear portion such that the extendable device can be adjusted to a particular length and maintained at the particular length. The handle adaptor is structured to engage the handle such that the handle can be moved from a first position to a different second position.

Claims

1. An extendable device for engaging and operating a handle mounted on an electrical switching apparatus, said extendable device comprising:

a first linear portion having a first end and a second end, said first linear portion extending therebetween, and a second linear portion having a first end and a second end, said second linear portion extending therebetween, said second linear portion having an inside surface that forms a chamber and having an inside distance greater than an outside distance of said first linear portion such that said first linear portion is structured to linearly move toward and away from said chamber of said second linear portion;

a handle adaptor extending away from said second end of one of said first and second linear portions;

a spring mechanism disposed between said first and second linear portions and disposed within said chamber of said second linear portion, said spring mechanism structured to exert a force to linearly move said first linear portion away from said chamber of said second linear portion; and

a retainer mechanism structured to engage said first linear portion and said second linear portion such that the extendable device can be adjusted to a particular length and maintained at said particular length, said retainer mechanism comprising at least one nub biased upward, said nub positioned on an outer surface of said first linear portion and a plurality of detents formed in said second linear portion, each of said plurality of detents structured to engage said at least one nub,

wherein the handle adaptor is structured to engage said handle such that the handle can be moved from a first position to a different second position.

2. An extendable device for engaging and operating a handle mounted on an electrical switching apparatus, said extendable device comprising:

a first linear portion having a first end and a second end, said first linear portion extending therebetween, and a second linear portion having a first end and a second end, said second linear portion extending therebetween, said second linear portion having an inside surface that forms a chamber and having an inside distance greater than an outside distance of said first linear portion such that said first linear portion is structured to linearly move toward and away from said chamber of said second linear portion;

a first handle adaptor extending away from said second end of said first linear portion;

a second handle adaptor extending away from said second end of said second linear portion;

a spring mechanism disposed between said first and second linear portions, said spring mechanism structured to exert a force to linearly move said first linear portion away from said chamber of said second linear portion; and

a retainer mechanism structured to engage said first linear portion and said second linear portion such that the extendable device can be adjusted to a particular length and maintained at said particular length, said retainer mechanism comprising at least one nub biased upward, said nub positioned on an outer surface of said first linear portion and a plurality of detents formed in said second linear portion, each of said plurality of detents structured to engage said at least one nub,

wherein at least one of said first handle adaptor and said second handle adaptor is structured to engage said handle such that the handle can be moved from a first position to a different second position.

3. The extendable device of claim 2, wherein said extendable device is extendable to a length that extends beyond a flash protection boundary of the electrical switching apparatus.

4. The extendable device of claim 2, wherein said one of said first and said second handle adaptors is structured to engage a first handle design and the other handle adaptor is structured to engage a different second handle design.

5. The extendable device of claim 2, wherein said extendable device is constructed of an electrically insulative material.