# US H1,349 H · Bushing removal tool

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- Number: US H1,349 H
- Document ID: USH1349H
- Status: Granted
- Kind: H
- Application number: 08/070,006
- Filed: 1993-05-24
- Granted: 1994-09-06
- Earliest claimed: 1992-07-02
- Assignees: The United States of America as represented by the Secretary of the Air Force
- Inventors: Malcolm E. Kelley
- Web page: https://patentgrep.com/patent/USH1349H

## Abstract

A new bushing removal tool for removing bushings from aircraft transparencies combines a U-shaped tool body, supporting base plates, a threaded shaft extending through the tool body, a large nut screwed on one end of the threaded shaft and a bushing puller on the other end of the threaded shaft. The bushing puller has a pivoting tip which, in one pivoted position, allows the bushing puller to fit through the bushing and, in another pivoted position, engages the bushing so that, when the large nut is rotated, the bushing puller is pulled up. The bushing is pulled up with the bushing puller. A hydraulic or pneumatic cylinder and piston can be used in place of the threaded shaft and large nut. A specially shaped shaft with a fixed tip can be used as the bushing puller for small or fragile bushings.

## Claims

### Claim 1

A bushing removal tool for removing a bushing having a front and back from an opening in a plastic structure, comprising:
(a) a tool body;
(b) support means attached to the tool body for supporting the tool body over the front of the bushing, the support means including a plurality of flat plates arranged so that a flat side of each plate bears on the surface of the plastic structure near and about the opening so that damage from bending forces at the edge of the opening during removal of the bushing is reduced;
(c) a bushing puller for engaging the bushing, the bushing puller comprising:
(i) a shaft having a top and a bottom, the shaft shaped and sized to completely fill the bushing and to be longer than the bushing;
(ii) a fixed flange integral with the bottom of the shaft, the flange sized and shaped to engage the back of the bushing; and,
(iii) first counterpart latching means integral with the top of the shaft; and,
(d) pulling means attached to the tool body and having second counterpart latching means for latching to the first counterpart latching means.