HALDEX MIDLAND BRAKE CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
B60T VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL 370
 
 
 
F16D COUPLINGS FOR TRANSMITTING ROTATION 190

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5425572 Quick-release valve for a vehicle air release brake systemJun 15, 93Jun 20, 95[B60T]
5358076 Indicator unit for an air brake systemAug 05, 93Oct 25, 94[F16D]
5322353 Valve assembly for a vehicle air brake systemFeb 04, 93Jun 21, 94[B60T]
RE30205 Vehicle brake systemMay 08, 78Feb 05, 80[B60T]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4932505 Roller body for brake shoe actuator camExpiredDec 23, 85Jun 12, 90[F16D]
4915456 Compact, integrated, multi-function brake valveExpiredMay 02, 89Apr 10, 90[B60T]
4895226 Vehicle automatic slack adjusterExpiredAug 19, 85Jan 23, 90[F16D]
4799579 Clutch and brake friction assembly and method of making sameExpiredNov 18, 85Jan 24, 89[F16D]
4710108 Isolation valve constructionExpiredMar 11, 87Dec 01, 87[F04B]
4643279 Means for connecting a brake rod to the lever arm of an automatic slack adjusterExpiredMay 06, 85Feb 17, 87[B60T, F16D]
4624345 Vehicle slack adjustersExpiredJul 13, 84Nov 25, 86[F16D]
4565270 Friction clutch convertible for either push-type or pull-type disengagementExpiredNov 14, 83Jan 21, 86[F16D]
4544046 Over-the-road vehicle automatic slack adjusterExpiredNov 28, 83Oct 01, 85[F16D]
4480530 Braking actuatorExpiredJun 28, 82Nov 06, 84[F15B, F01B, F16J]
4354713 Dual area metering valve with variable reaction assemblyExpiredNov 13, 80Oct 19, 82[B60T]
4313454 Hydraulic brake booster pressure limiterExpiredDec 12, 79Feb 02, 82[B60T, G05D]
4307272 Pressure actuated switchExpiredFeb 21, 79Dec 22, 81[A01K]
4302057 Pneumatic control valveExpiredDec 27, 79Nov 24, 81[B60T]
4300583 Hydraulic booster valveExpiredDec 12, 79Nov 17, 81[F16K, F15B]
4294071 Hydraulic booster travel ratio check valveExpiredDec 12, 79Oct 13, 81[B60T]
4290342 Hydraulic booster valveExpiredDec 14, 79Sep 22, 81[F15B]
4279273 Clutch retention feature of a hand control valveExpiredFeb 04, 80Jul 21, 81[F16K]
4266336 Fixtures and methods for dynamo servicingExpiredJul 26, 79May 12, 81[H02K]
4250361 Pressure actuated switch with actuator having contact-actuating rib between piston and spring-guide portionsExpiredMar 12, 79Feb 10, 81[H01H]

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