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STATOR WEDGE REMOVAL DRIVER

IP.com Disclosure Number: IPCOM000238540D
Publication Date: 2014-Sep-03
Document File: 3 page(s) / 85K

Publishing Venue

The IP.com Prior Art Database

Abstract

The present invention proposes a technique to drive out an installed stator wedge with a tapered slide. The technique includes a tool with a serrated metal blade having many teeth. The blade is incorporated in a non-metallic housing with a handle. The housing includes a metal insert sleeve that accepts a peening gun anvil. The housing also includes feature that align the peening gun anvil to a stator slot and prevent the metal blade from contacting the stator core. An operator holds the tool by the handle and places the blade against the stator wedge with the serrated teeth pointed to grab the wedge when driven by the peening gun.

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STATOR WEDGE REMOVAL DRIVER

BACKGROUND

The present invention relates generally to a stator wedge and more particularly to a tool to drive out the installed stator wedge.

A stator wedge is installed into a stator core dovetail slot. Driving a tapered slide beneath a slot tightens the stator wedge. When the slide is fully driven under the wedge, there is no specified way to pull or remove back. In order to remove back, the stator wedge is driven from above and there is no feature to grab on top of the stator wedge.

A conventional technique includes a saw blade welded to the end of a cold chisel. The saw blade is strucked directly with a hammer and a winder to hold shaft of the chisel to drive out the stator wedge. However, the conventional technique damages the stator core and harms the operator from being struck by the hammer.

Another conventional technique includes a peening gun to drive down or removal of the stator wedges. However, the conventional technique creates a depression and damage to the stator wedge.

It would be desirable to have an efficient technique to drive out the installed stator wedge without creating any damage.

BRIEF DESCRIPTION OF THE DRAWING

Figure 1 depicts the assembly of the tool to drive out the stator wedge.

DETAIL DESCRIPTION

The present invention proposes a technique to drive out the installed stator wedge with a tapered slide. The technique includes a tool with a serrated metal blade having many teeth. The blade is incorporated in a non-metallic housing with a handle. The housing includes a metal insert sleeve that accepts a peening gun anvil. The housing also contains feature to align the peening gun anvil to a stator slot and prevents the metal blade from contacting the stator core.  An operator holds the tool by the handle and places the blade against the stator wedge with the serrated teeth pointed to grab the wedge when driven by the peening gun. The operator places the peening gun anvil in the metal insert sleeve and activates the peening gun. The impact of the peening guns imparts a downward angled force onto the blade and drives the gun into the wedge. When the blade teeth are sufficiently driven into the surface of the wedge, the base of the housing contacts the surface of the wedge. The wedge is then driven away from the slide underneath.


Figure 1 depicts an assembly of the tool to drive out the stator...