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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 8011483 | Ventilation device for a combined spring accumulator and operating brake cylinder A ventilation device provided which includes a valve arranged in a combined spring accumulator and operating brake cylinder. On depressurization of a pressure medium chamber in the spring accumulator brake cylinder, ventilation of a spring accumulator chamber of the... | 09/06/2011 |
| 7931130 | Universal brake assembly A brake actuator assembly for a railway vehicle braking system comprises a flexible elastomeric member directly and sealably attached to a mounting member employed for attaching the brake actuator assembly to the rigid structure of a braking system and to a push rod... | 04/26/2011 |
| 7845474 | Combined service brake and spring type brake cylinder having internal ventilation A combined service brake and spring brake cylinder has a diaphragm arranged in a housing of the service brake cylinder. At one side, the diaphragm delimits a service brake chamber acted on with a service brake pressure, and at the other side delimits a chamber accom... | 12/07/2010 |
| 7493994 | Spring brake actuator with mid-located spring A spring-type brake actuator for a pneumatically-operated vehicle brake is provided, with a brake actuator spring located on a front side of the actuator's intermediate flange, between a service brake actuator and a parking brake release actuator. The spring is capt... | 02/24/2009 |
| 7303053 | Non-pressure head with integrated piston stop and vent/drain A non-pressure head for a fluid cylinder, which includes a drain channel formed in the flange by a raised portion of the flange extending from a plane of the flange in the same direction as the head portion. The channel is cold formed in the flange. For the piston s... | 12/04/2007 |
| 6397986 | Collet style tread brake unit A brake actuator for use in railway transit and similar vehicles to adjust for wear of braking components located on such vehicles. The brake actuator includes an externally threaded or serrated rod having a longitudinal axis. Such brake actuator further ... | 06/04/2002 |
| 6394462 | Push rod seal for disc brake actuator This is a reliable long-lasting removable seal for attachment to the push rod opening of a service brake actuator that is to be used with a disc brake system. The seal allows the service brake actuator to enjoy the benefits of having breather holes in its... | 05/28/2002 |
| 6234587 | Compressed-air disk brake A compressed-air disk brake for vehicles comprises an actuating device for applying brake blocks in the direction of a brake disk and a brake cylinder, which, on arrival of the compressed air, initiates a braking action via the actuating device. At least ... | 05/22/2001 |
| 6116385 | Dual force range TMX cylinder using an air bag actuator An air bag actuated brake cylinder assembly for a railway vehicle braking system is provided which comprises a cylindrical casing engaged with the railway vehicle braking system including a hollow piston assembly having a piston rod assembly attached ther... | 09/12/2000 |
| 5002164 | Push-rod guide for air-operated diaphragm spring brakes An improvement in a conventional air-operated diaphragm spring brake is provided by a guide (100) being disposed in registry with an aperture (26) in a service brake housing (16). A push-rod (10) extends from a diaphragm (58) within the housing (12) throu... | 03/26/1991 |
| 4923036 | Disc brakes The present specification discloses a disc brake for use on a commercial vehicle. The disc brake has a brake actuation mechanism which is movable axially by brake operator mounted in a part of the disc brake. The brake operator has an axis of actuation wh... | 05/08/1990 |
| 4596311 | Brake system A railroad car brake system operable by an air bag which includes double acting brakes operable on the wheels. Links suspend the brakes and the live and dead levers connected by an adjustable connecting link mechanism are operable by the air bag. Slack as... | 06/24/1986 |
| 4108285 | Caliper brake actuating cylinder Pneumatic caliper brake actuator having diaphragm, piston member and cylinder body. Cylinder body has outer portions having clearance recesses therein to accept the outer ends of arms carrying brake shoes. At least two return compression springs extend be... | 08/22/1978 |
