Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7980075 | Reservoir and master cylinder A reservoir capable of shortening a time period required to fill a brake system and a clutch system with a fluid with vacuuming in a case where the reservoir has a brake reservoir chamber to be connected to a brake master cylinder of the brake system and a clutch re... | 07/19/2011 |
| 7926269 | Method for controlling a dynamic system A method for providing a controlled force to a dynamic system includes applying a force to a first actuator, transmitting the force from the first actuator to a second actuator through a closed fluid path containing a captured volume of fluid, and providing, via the... | 04/19/2011 |
| 7412829 | Hydraulic apparatus for a bicycle brake lever device A hydraulic apparatus such as a bleeder screw comprises an inner end, an outer end, and a main body extending between the inner end and the outer end. The main body includes a first section having a threaded outer peripheral surface a second section disposed between... | 08/19/2008 |
| 7350354 | Hydraulic actuation apparatus for a motor vehicle clutch A hydraulic actuation apparatus for a motor vehicle clutch includes a master cylinder, a slave cylinder, a hydraulic line forming a main fluid channel connecting the master cylinder to the slave cylinder to form a pressure space, and a damping member arranged in the... | 04/01/2008 |
| 7344203 | Master cylinder A master cylinder includes a cylinder body, primary cups supported on the inner periphery of the cylinder body, and a primary piston and a secondary piston inserted in the cylinder body so as to be in sliding contact with the respective primary cups. The cylinder bo... | 03/18/2008 |
| 7299820 | Hydraulic fluid reservoir In order to prevent hydraulic fluid infiltrating out from a hydraulic fluid tank (1) when a vehicle is in operation, the invention provides for the tank to be compartmentalized by an anti-overflow partition (16). The anti-overflow partition is made in ... | 11/27/2007 |
| 7284374 | Actuation system with fluid transmission for interaction control and high force haptics A fluid transmission system adapted to provide a controlled force to a dynamic system includes a controller, a drive system coupled to the controller and to a path having a captured amount (mass) of fluid contained therein and an interface coupled to the captured fl... | 10/23/2007 |
| 7197875 | Hydraulic cylinder with coaxial, in-line reservoir A compact hydraulic cylinder may include a pressure chamber and a reservoir in coaxial, in-line arrangement relative to one another. The pressure chamber and reservoir are separated from one another in use by a piston and hydraulic seal. The piston may be withdrawn ... | 04/03/2007 |
| 7063200 | Pulsation dampening apparatus and clutch master cylinder A pulsation dampening apparatus and a clutch master cylinder used for a hydraulic clutch operation system which has a hydraulic circuit. The apparatus has a housing which has a dampening chamber in the hydraulic circuit and a dampening assembly accommodated in the h... | 06/20/2006 |
| 7017346 | Device for transmitting a displacement of an actuator using an elastomer ring A device for transmitting a displacement of an actuator to a setting element comprises two pistons that delimit two transmission chambers and a compensation chamber with a housing. The compensation chamber is hydraulically connected to the two transmission chambers.... | 03/28/2006 |
| 7010913 | Braking system, in particular for a motor vehicle A supply device for a braking system, comprising at least one reservoir (2) for supplying a master cylinder, and a rigid support (4) for the reservoir (2), characterized in that the reservoir (2) and the fastening support (4) compr... | 03/14/2006 |
| 6996985 | Expansion reservoir for a master cylinder of a hydraulic force transmission system An expansion reservoir is disclosed, which has a fluid chamber defined by a reservoir bottom and a flexible reservoir top movable relative to the reservoir bottom as a function of the reservoir filling level, wherein a hydraulic connection to a master cylinder is pr... | 02/14/2006 |
| 6892537 | Brake fluid reservoir, particularly for a motor vehicle A brake fluid reservoir (10) for a motor vehicle having at least one impervious and flexible wall (12) whose capacity is adjusted to the volume of brake fluid contained therein to avoid placing the reservoir at a depression with a drop in the level of ... | 05/17/2005 |
| 6845615 | Master cylinder A master cylinder having a housing with first and second bores that are connected to a same circuit in a braking system. A first piston is sealingly retained in the first bore to define a first chamber and a second piston is sealingly retained in the second bore to ... | 01/25/2005 |
| 6789388 | Triple action damper for hydraulic clutch actuator A clutch hydraulic actuator system having a vibration damper provided in the system between a master cylinder and a slave cylinder of the system. The damper includes a housing, an elastomeric diaphragm, and a spring steel diaphragm. The upper face of the elastomeric... | 09/14/2004 |
| 6702136 | Brake fluid reservoir cap assembly design The present invention is an improved reservoir cap for a braking fluid reservoir including a cylindrical skirt for surrounding an opening of the reservoir body, a disc portion having a hard stop formed unitarily with the cylindrical skirt for closing the ... | 03/09/2004 |
| 6647722 | Device to reduce vibrations in a hydraulic force transfer system A device is disclosed to reduce vibrations in a hydraulic force transfer system which has a master cylinder and a slave cylinder connected with this via a fluid column. The device has a housing and a membrane attached by its edge to the housing. The housi... | 11/18/2003 |
| 6574960 | Method and apparatus for maintaining the correct oil overflow quantity in diaphragm compressors In diaphragm compressors diaphragm heads with oil spaces of high energy content (pressure×volume) have a strongly negative influence on the operating response of the oil overflow valve. The reaction of the valve leads to undesirably long open times causi... | 06/10/2003 |
| 6434935 | Liquid reservoir A liquid reservoir, particularly for use in an hydraulic system. The reservoir includes a container and a cover cap, and it is intended for containing an hydraulic pressure medium. A pressure equalization component is provided within the container for com... | 08/20/2002 |
| 6430928 | Dual action damper for hydraulic clutch actuator A clutch hydraulic actuator system having a vibration damper provided in the system between a master cylinder and a slave cylinder of the system. The damper includes an elastomeric diaphragm and a spring steel diaphragm. One face of the elastomeric diaphr... | 08/13/2002 |
| 6357233 | Air switch operator A pneumatic operator for an air switch is provided. The operator is used to deliver at pulse of relatively high pressure air to an air switch, such as an air switch which would be commonly used in a spa bath or spa pool installation to operate a pump. The... | 03/19/2002 |
| 6296324 | Brake fluid pressure generating device for a vehicle A brake fluid pressure generating device includes a master cylinder piston slidably disposed in a cylinder body, a pressure chamber and a power chamber formed in the cylinder body, a master cylinder that generates a master cylinder fluid pressure in respo... | 10/02/2001 |
| 6267456 | Brake master cylinder and pedal feel emulator A master cylinder (12) and pedal feel emulator (10) useful in a brake-by-wire system. A bore (18) of the master cylinder contains three pistons (22, 34, and 28), in tandem, that divide the bore into various zones (26, 24, 32, 30). The emulator contains a ... | 07/31/2001 |
| 6231135 | Hybrid brake system A hybrid brake system for a vehicle propelled at least by a rotating electric motor powered by a storage battery and in communication with at least one ground-engaging wheel. The hybrid brake system includes a vehicle braking control device and an electri... | 05/15/2001 |
| 6212888 | Quick connect coupling for a hydraulic control system A hydraulic control apparatus having a master cylinder, a slave cylinder, and a conduit connecting the master cylinder to the slave cylinder is constituted as separate modular units interconnected by a quick connect coupling including a female coupler mem... | 04/10/2001 |
| 6148614 | Damper with integral bracket A damper for use with a hydraulic actuator of the type including a master cylinder and a slave cylinder with a conduit interconnecting the outlet of the master cylinder and the inlet of the slave cylinder. The damper is positioned in the conduit between t... | 11/21/2000 |
| 6101811 | Quick connect coupling for a hydraulic control system including integral damper A quick connect coupling for use in a hydraulic clutch control system including a hydraulic master cylinder and a hydraulic slave cylinder. One of the coupler members of the quick connect coupling includes a central axial passage defining an inlet at one ... | 08/15/2000 |
| 6098405 | Drive unit for medical equipment A tube-line pressure sensor of a medical-appliance driving apparatus detects the interior pressure of a tube line. If the pressure detected by a tube-line pressure sensor is equal to or less than a predetermined value, a first solenoid valve is closed, wh... | 08/08/2000 |
| 6089676 | Hydraulic brake apparatus for a vehicle The present invention is directed to a hydraulic brake apparatus for applying braking force to each wheel of a vehicle in response to depression of a brake pedal. An auxiliary pressure source is provided for pressurizing the brake fluid in the reservoir t... | 07/18/2000 |
| 6058705 | Hydraulic brake system The invention relates to a hydraulic brake system having a tandem master cylinder as the brake force set-point value transducer for braking by external force, downstream of which are disconnection valves for hydraulically disconnecting the master cylinder... | 05/09/2000 |
| 5960630 | Hydraulic brake apparatus for a vehicle The invention is directed to a hydraulic brake apparatus which includes a master cylinder having a cylinder body and a master piston slidably disposed therein for defining a pressure chamber ahead of the master piston and a power chamber behind the master... | 10/05/1999 |
| 5927074 | Hydraulic brake apparatus for a vehicle The invention is directed to a hydraulic brake apparatus which includes a master cylinder having a cylinder body and a master piston slidably disposed therein for defining a pressure chamber ahead of the master cylinder and a power chamber behind the mast... | 07/27/1999 |
| 5918760 | Hydraulic fluid reservoir The invention relates to a hydraulic fluid reservoir comprising a substantially cylindrical wall (1), an upper wall (2) and a lower wall, and two tubular connection pieces (4, 5) for entering and discharging hydraulic fluid into and out from the interior ... | 07/06/1999 |
| 5899068 | Hydraulic brake apparatus for a vehicle The invention is directed to a hydraulic brake apparatus which includes a master cylinder having a cylinder body and a master piston slidably disposed therein for defining a pressure chamber ahead of the master piston and a power chamber behind the master... | 05/04/1999 |
| 5878578 | Hydraulic pressure generator with vibration damping A hydraulic pressure generator having a body (1) with a first bore (11) therein for receiving a cylinder (21) of a piston assembly (2) to define a pressure chamber (12). The cylinder (21) has a second bore (211) for receiving an auxiliary piston (22) whic... | 03/09/1999 |
| 5819795 | Closed V-slot for float chamber of brake fluid reservoir A reservoir for a master cylinder including an upper reservoir section forming a portion of a float damping chamber and a lower reservoir section forming a portion of the float damping chamber. The upper reservoir section and the lower reservoir section a... | 10/13/1998 |
| 5515678 | Brake pressure generating device for a vehicle A brake pressure generating device for a vehicle includes a cylinder body, a pressure source connected with the cylinder body for generating a pressure, a first piston slidably disposed in the cylinder body for being operated by a brake pedal of the vehic... | 05/14/1996 |
| 5485727 | Fastener installation tool A fastener installation tool of the push/pull type including an air piston driving a hydraulic piston and further including a head piston driven by the hydraulic piston and coacting with the hydraulic piston to form a closed loop hydraulic circuit. The hy... | 01/23/1996 |
| 5479779 | Device for the prevention of the abuse of dry-plate clutches A device for the prevention of the abuse of a dry-plate clutch (1) for a motor vehicle with a manual gearbox, wherein the device acts jointly with a hydraulic master cylinder (3) and a related slave cylinder (4) in the operation of the clutch (1). The dev... | 01/02/1996 |
| 5349820 | Inlet union for master cylinder An inlet union for master cylinder of the present invention is so constructed that a flange portion is disposed at the periphery of a duct member, a circular raised portion whose outside diameter is smaller than that of the flange portion is integrally fo... | 09/27/1994 |
