Michael L Mattingly

US Patent:

RE38315, Nov 18, 2003

Filed:

Jul 2, 2002

Appl. No.:

10/188705

Inventors:

Robert S. Hodgson - Evansville IN
Michael J. Mattingly - Evansville IN

Assignee:

Apex Tool and Manufacturing, Inc. - Evansville IN

International Classification:

B23P 1900

US Classification:

29822, 29252, 294263, 29 2351

Abstract:

An apparatus for extracting screw elements from a screw shaft comprises a frame, a stationary clamp mounted on the frame and disposable between open and closed positions, a carriage mounted on the frame for motion toward and away from the stationary clamp, a movable clamp mounted on the carriage for motion therewith and disposable between open and closed positions, a first drive coupled to the stationary clamp for opening and closing the stationary clamp, a second drive coupled to the movable clamp for opening and closing the movable clamp, and a third drive coupled to the carriage for causing motion of the carriage toward and away from the stationary clamp, wherein clamping of a downstream screw element by the stationary clamp, clamping of an upstream screw element by the movable clamp and one or more strokes of the carriage away from the stationary clamp result in removal of the downstream screw element held in place by the stationary clamp from the screw shaft. The procedure is repeated until all the remaining screw elements are removed.

US Patent:

62234277, May 1, 2001

Filed:

Mar 24, 2000

Appl. No.:

9/534762

Inventors:

Robert S. Hodgson - Evansville IN
Michael J. Mattingly - Evansville IN

Assignee:

Apex Tool and Manufacturing, Inc. - Evansville IN

International Classification:

B23P 1900
B23P 1904

US Classification:

29822

Abstract:

An apparatus for extracting screw elements from a screw shaft comprises a frame, a stationary clamp mounted on the frame and disposable between open and closed positions, a carriage mounted on the frame for motion toward and away from the stationary clamp, a movable clamp mounted on the carriage for motion therewith and disposable between open and closed positions, a first drive coupled to the stationary clamp for opening and closing the stationary clamp, a second drive coupled to the movable clamp for opening and closing the movable clamp, and a third drive coupled to the carriage for causing motion of the carriage toward and away from the stationary clamp, wherein clamping of a downstream screw element by the stationary clamp, clamping of an upstream screw element by the movable clamp and one or more strokes of the carriage away from the stationary clamp result in removal of the downstream screw element held in place by the stationary clamp from the screw shaft. The procedure is repeated until all the remaining screw elements are removed.