"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 7299900 | Braking device for an industrial truck A braking device for an industrial truck, comprising a hydraulic brake cylinder which is coupled to an actuating element and is connected with at least one hydraulic brake associated with a wheel of the industrial truck via a brake line wherein another hydraulic bra... | 11/27/2007 |
| 7021172 | Hydraulic throttle for vehicles A hydraulically operated throttle system that has the hydraulic system components installed entirely within the throttle grip on the handlebar. A regular throttle cable is run through the frame/handlebar where it connects to the hydraulic system. A three-piston syst... | 04/04/2006 |
| 6963772 | User-retainable temperature and impedance monitoring methods and devices A user-retainable monitoring system is disclosed. At least a pair of sensors is provided in association with a support member. The support member is preferably of a type that may be worn by or at least temporarily implanted in a patient. Possible sensor types includ... | 11/08/2005 |
| 6729132 | Remotely and directly pedal operated hydraulic compact booster for bi-directional braking A bi-directional braking assembly for a vehicle includes a hydraulic booster assembly for applying proportional fluid pressure to a brake assembly and is actuated by a forward pedal. A master cylinder actuated by a rear pedal communicates fluid to the hydraulic boos... | 05/04/2004 |
| 6415605 | Brake system A brake system including an intensifying arrangement which allows a master cylinder pressure to be intensified by feeding a discharge pressure from a pump to an intensifying chamber. The brake system includes a master cylinder having a primary piston, on ... | 07/09/2002 |
| 5983637 | Hydraulic brake booster having piston travel limit feature A brake booster for a brake system of a vehicle, wherein the brake booster is in fluid communication with a source of pressurized fluid. The brake booster includes a housing having a bore formed therein and a conduit formed therein being in fluid communic... | 11/16/1999 |
| 5329769 | Master cylinder and brake booster arrangement for a brake system A brake system (10) having a master cylinder (14) connected to wheel brakes (24, 26) of a vehicle through remote compensation valves (20, 22). The master cylinder (14) has a two piece housing (66, 84) with a bore (74, 86) therein. First (32) and second (3... | 07/19/1994 |
| 5313796 | Remote compensation valves for a master cylinder in a brake system A remote compensation valve (20) through which pressurized fluid from a master cylinder (14) is communicated to the wheel brakes (24, 26) of a vehicle. The compensation valve (20) has a housing (200) with a bore (202) therein for retaining a shuttle pisto... | 05/24/1994 |
| 5083432 | Tandem master cylinder with a third piston and chamber A hydraulic braking system includes the third piston slidably disposed between the first piston and the second piston of the tandem master cylinder so as to define the third pressure chamber between the third piston and second piston. The third pressure c... | 01/28/1992 |
| 4225022 | Brake booster A brake booster includes a booster piston adapted to be acted upon by the pressure fluid metered through a valve device and displacing a master cylinder piston. A pressure chamber is formed between the booster piston and the master cylinder piston. An add... | 09/30/1980 |
| 4134266 | Hydraulic control apparatuses combined with friction brakes Apparatus for hydraulic control of friction brakes of an automobile vehicle which comprises a first master-cylinder directly connected to the hydraulic brake circuit and operated by the driver's brake pedal and a second master-cylinder operated by release... | 01/16/1979 |
| 3991845 | Remote shift Remote shift for a vehicle in which a shift lever at a remote station operates transmission gears in a motor vehicle by operating a piston and valve which produce and control hydraulic pressure which operates actuating pistons at the gears.... | 11/16/1976 |
| 3978669 | Servo-power-assisted hydraulic brake-actuating arrangement The arrangement comprises a brake valve for controlling servo pressure which is proportional to the actuating force at a brake pedal and first and second displacement pistons each actuating a different brake circuit. The second displacement piston is actu... | 09/07/1976 |
| 3944013 | Remote shift Remote shift for a vehicle in which a shift lever at a remote station operates transmission gears in a motor vehicle by operating a piston and valve which produce and control hydraulic pressure which operates actuating pistons at the gears.... | 03/16/1976 |