HOFMANN WERKSTATT-TECHNIK GMBH

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6367157 System for adjusting the track on motor vehicle wheelsExpiredFeb 09, 99Apr 09, 02[G01B]
5913254 Method and apparatus for handling a wheel on a tire fitting machineExpiredDec 22, 97Jun 15, 99[G01N]
5717138 Arrangement for driving a measuring spindle of a balancing machineExpiredFeb 06, 96Feb 10, 98[G01M]
5606127 Method of setting a displayable machine function of a wheel balancing machine and corresponding wheel balancing machineExpiredOct 20, 95Feb 25, 97[G01M]
5509307 Mechanical drive arrangement for a measuring spindle of a wheel balancing machineExpiredNov 30, 93Apr 23, 96[G01M]
5435183 Method and apparatus for determining the number of successive balancing operations performed per balancing operation which results in a measured unbalance within a predetermined toleranceExpiredFeb 09, 93Jul 25, 95[G01M]
5311668 Wheel position measuring apparatusExpiredSep 10, 93May 17, 94[G01B]
5291264 Method and apparatus for the optical measurement of an angle between positions of components relative to each otherExpiredJan 16, 92Mar 01, 94[G01B]
5244331 Apparatus for positioning a rotary member on a balancing machineExpiredFeb 10, 92Sep 14, 93[B60B]
4984126 Method and circuit for stopping the test run of a rotor being balancedExpiredSep 08, 88Jan 08, 91[H01H]
4974450 Apparatus for measuring imbalance of rotorsExpiredSep 08, 88Dec 04, 90[G01M]
4972712 Mounting apparatus for mounting a rotary member on unbalance measuring machineExpiredJul 26, 89Nov 27, 90[G01M]
4955716 Method and device to determine a relative reference position for an angle measurement of an objectExpiredJan 05, 89Sep 11, 90[G01B]
4890661 Tire demounting toolExpiredAug 08, 88Jan 02, 90[B60C]
4817429 Method and apparatus for optimization of running conditions of an automobile wheelExpiredMay 26, 87Apr 04, 89[G01M]
4702103 Method of quality grading in uniformity tests of rotors, in particular of automobile tiresExpiredMay 20, 86Oct 27, 87[G01M]
4554833 Method and apparatus for determining the unbalance of wheels mounted on the drive axle of an automobileExpiredSep 14, 83Nov 26, 85[G01M]
4441355 Apparatus and method for displaying unbalance of rotors during measurementExpiredJul 09, 81Apr 10, 84[G01M]
4336717 Device to clamp a wheel on the shaft of a balancing machineExpiredAug 28, 80Jun 29, 82[G01M]
4279329 Safety device for lift equipmentExpiredAug 27, 79Jul 21, 81[B66B]

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