Location method and panel pressing apparatus

• US 5,445,000 A
• Filed: 10/25/1993
• Issued: 08/29/1995
• Est. Priority Date: 10/28/1992
• Status: Expired due to Fees

• Current Assignee: Gordon C. Brown
• Original Assignee: Gordon C. Brown
• Inventors: Brown, Gordon C.
• Primary Examiner(s): Larson, Lowell A.
• Application Number:
  US08/142,805
• Time in Patent Office: 673 Days
• Field of Search: 33/555, 33/DIG. 1, 72/705, 72/707, 72/447, 72/457, 72/35, 72/31
• US Class Current: 72/31.01
• CPC Class Codes: B21D 1/06 Removing local distortions
• CPC Class Codes: Y10S 33/01 Magnetic
• CPC Class Codes: Y10S 72/705 Vehicle body or frame straightener

Abstract

The invention concerns a method of locating and repairing dents in motor vehicle panels. The initial step in the method is to locate the dent in the panel. This is done by positioning a magnet and a metal ball on or adjacent to opposite surfaces of the panel so that the magnet and ball attract one another through the panel. The relevant one of the magnet or ball is to the location of the dent on one side of the panel with the result that the other of the magnet or ball moves to the dent on the other side of the panel. The magnet is typically carried by a mechanical pressing tool which can then be used to lever out the dent by working the metal around the dent.

Claims

1. A method of locating and repairing a dent in a motor vehicle panel having a dented outer surface in which the dent is formed and an inner surface in which the dent is not readily visible, the method including the steps of:

determining the location of the dent on the inner surface by;

locating a magnetisable ball on the outer surface of the panel, arranging a panel pressing tool, which has an operative end carrying a magnet, adjacent the inner surface of the panel so that the magnet attracts the ball through the panel and causes the ball to move on the outer surface when the panel pressing tool is moved relative to the inner surface, moving the panel pressing tool relative to the inner surface in a manner to move the ball visibly on the outer surface to the location of the dent such that the panel pressing tool will then be located on the inner surface of the panel in a position opposite the dent on the outer surface thereof, and repairing the dent by operating the panel pressing tool to apply an outwardly directed pressing force to the inner surface of the panel at the position opposite the dent, thereby to remove the dent in the panel.

2. A method according to claim 1, wherein the steps of locating and repairing the dent in the panel are performed without removing the panel from the vehicle.

3. A method according to claim 2 comprising the further steps of providing support means defining a reaction surface and locating the panel pressing tool so as to react against the reaction surface when operated to apply an outwardly directed pressing force to the panel in the region of the dent.

4. A method according to claim 3 wherein the panel pressing tool comprises a housing, a plunger which is movable slidably relative to the housing, and a drive mechanism operable to urge the plunger in a direction out of the housing, the plunger having an operative pressing end carrying the magnet, and wherein the method comprises the step of locating the tool relative to the reaction surface in a manner for the tool to react against the reaction surface when the drive mechanism is operated to urge the plunger out of the housing so that the operative pressing end presses against the inner surface of the panel.

5. A method according to claim 2 wherein the panel pressing tool comprises a lever having an operative pressing end carrying the magnet, and wherein the method comprises the steps of securing a bracket to the vehicle and operating the lever, about a fulcrum provided by the bracket, so that the operative pressing end of the lever presses against the inner surface of the panel.

6. Panel repair apparatus for repairing a dent in a motor vehicle panel having a dented outer surface in which the dent is formed and an inner surface in which the dent is not readily visible, the apparatus including a magnetisable ball locatable on the outer surface of the panel, and a panel pressing tool which has an operative end carrying a magnet and which is locatable adjacent the inner surface of the panel so that the magnet attracts the ball through movement of the tool on the inner surface of the panel causing the ball to move visibly on the outer surface until the ball is positioned on the outer surface at the location of the dent therein such that the tool is then disposed at a position on the inner surface opposite the dent, the panel pressing tool then being operable to apply an outwardly directed pressing force to the inner surface of the panel at the position opposite the dent, thereby to remove the dent.

7. Panel repair apparatus according to claim 6 wherein the panel pressing tool comprises a housing, a plunger which is movable slidably relative to the housing, and a drive mechanism operable to urge the plunger in a direction out of the housing, the plunger having an operative pressing end carrying the magnet.

8. Panel repair apparatus according to claim 7 wherein the drive mechanism comprises a bell crank which is mounted pivotally relative to the housing and which acts against the plunger, the panel pressing tool including a Bowden cable which is attached to the bell crank and which is remotely operable to pivot the bell crank in a manner to urge the plunger out of the housing.

9. Panel repair apparatus according to claim 7 and comprising a free-standing support means defining a reaction surface, the panel pressing tool being locatable relative to the support means in a manner for the tool to react against the reaction surface when the drive mechanism is operated to urge the plunger out of the housing so that the operative pressing end of the plunger applies an outwardly directed pressing force to the inner surface of the panel.

10. Panel repair apparatus according to claim 6 wherein the panel pressing tool comprises a lever having an operative pressing end carrying the magnet, the apparatus comprising a bracket which is securable to a motor vehicle and which provides a fulcrum about which the lever is operable in a manner for the operative pressing end thereof to apply an outward pressing force to the inner surface of the panel.