Quotables
"There is no reason anyone would want a computer in their home."
Ken Olsen, chairman and founder of Digital Equipment Corporation ; 1977
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7530227 | Brake apply master cylinder A brake apply master cylinder includes a body and a piston assembly. The body includes a bore. The bore has a longitudinal axis, a closed front end, a primary fluid outlet fluidly connectable to a primary brake circuit, and a secondary fluid outlet fluidly connectab... | 05/12/2009 |
| 6752106 | Pressure pulse generator A pressure pulse generator comprising a circuit (12) filled with a pressure fluid, and at least one communication channel (15) that is connected to the circuit and via which the pressure fluid can flow into and out of the circuit. The pressure pulse ge... | 06/22/2004 |
| 5890364 | Master cylinder having a single service piston with compensation and damping sections An improved compensation piston arrangement for use with a dual circuit master cylinder having a single service piston for simultaneously pressurizing a first fluid chamber and a second fluid chamber, wherein the compensation piston arrangement provides f... | 04/06/1999 |
| 5878572 | Proportioning device for a brake system A brake system (10) having a proportioning device (18) through which a first fluid pressure is communicated to a first brake circuit and a second fluid pressure is communicated to a second brake circuit. The proportioning device (18) has a housing (90) wi... | 03/09/1999 |
| 5836161 | Hydraulic pressure booster A hydro-pneumatic pressure booster is proposed in which the reservoir chamber is limited by an elastic partition wall instead of a sliding piston.... | 11/17/1998 |
| 5211019 | Actuating unit for a hydraulic automotive vehicle brake system An actuating unit for hydraulic automotive vehicle brake systems, including a vacuum brake power booster, a master brake cylinder, and an operating element, configured to achieve a reduction of overall axial length and a simultaneous reduction of the weig... | 05/18/1993 |
| 4915186 | Hydraulic steering systems dampening devices The present invention is directed to a mechanical hydraulic pressure dampening devices for use in a steering system of an articulated self-propelled work vehicle. The dampening devices are hydraulically positioned between the steering cylinders of the wor... | 04/10/1990 |
| 4876853 | Tandem master cylinder with booster piston at pedal-remote end of master cylinder and with booster-pressure responsive reservoir valve for forward brake circuit A tandem master cylinder with a booster used for a hydraulic actuator such as an automotive brake system. The master cylinder has a first and a second independently movable presser piston disposed in tandem in a first housing such that the presser pistons... | 10/31/1989 |
| 4604866 | Master cylinder A master cylinder includes a housing movably supporting a pair of pistons and carrying a fluid reservoir assembly. The fluid reservoir assembly carries a differential area piston and a float which cooperate to activate a single reed switch, thereby genera... | 08/12/1986 |
| 4490978 | Fluid pressure proportioners Modular proportioners such as those of U.S. Pat. No. 4,213,655 are machined and separated into parts provided with appropriate O-ring seals so that the proportioners may be installed in an auxiliary bore of the master cylinder body. Threaded proportioner ... | 01/01/1985 |
| 4356694 | Master cylinder having a fluid pressure control valve mechanism A master cylinder having a fluid pressure control valve mechanism which is constituted by a cylinder body, pistons slidably received in the cylinder body for defining pressure chambers in cooperation with each other and with one end wall of the cylinder b... | 11/02/1982 |
| 4348866 | Master cylinder A master cylinder for a vehicular brake includes a cylinder closed at one end and open at the other end, a sleeve slidably received within the cylinder, a piston assembly including a pair of pistons integrally connected together, a stop on the cylinder fo... | 09/14/1982 |
| 4301653 | Tandem master cylinder The tandem master cylinder is provided with an equalizer device comprising a plunger mounted intermediate two chambers which are respectively connected to the two cavities of the master cylinder. At least one of the ducts connecting the master cylinder an... | 11/24/1981 |
| 4294070 | Master cylinder assemblies A master cylinder assembly for a vehicle braking system having two pressure circuits, comprises a master cylinder having two separate pressure chambers associated with respective pistons one chamber being arranged for connection to one of the pressure cir... | 10/13/1981 |
| 4290265 | Master cylinder device A tandem master cylinder device having a cylinder body slidably receiving therein a driving piston and a floating piston so as to define a first liquid chamber and a second liquid chamber, the device housing a liquid pressure control valve by which a diff... | 09/22/1981 |
| 4255932 | Tandem master cylinder In a known tandem master cylinder with two regulators for use in vehicles using diagonally split brake circuits, machining and assembly of the components is time consuming which makes the device expensive to manufacture. Moreover, the arrangement is only ... | 03/17/1981 |
| 4253306 | Master cylinder A master cylinder for a hydraulic brake system of an automotive vehicle having front and rear sets of brake cylinders is disclosed, in which during the application of brake pressure above a predetermined value at which modulation and reduction of the rate... | 03/03/1981 |
| 4249379 | Fluid pressure generator and valve member therefor A fluid pressure generator, such as a master cylinder, includes a housing with a bore for movably supporting a pair of pistons. The pair of pistons cooperate with the housing and with each other to substantially define a pair of pressure chambers which ar... | 02/10/1981 |
| 4175392 | Tandem master cylinder assembly A tandem master cylinder assembly for use in split-type hydraulic brake systems of an automotive vehicle, comprising a fluid reservoir, a cylinder body having a cylinder bore communicable with the fluid reservoir through two ports formed in the cylinder b... | 11/27/1979 |
| 4174867 | Brake force regulator for a motorcycle hydraulic brake system There is disclosed a brake force regulator for a motorcycle hydraulic brake system wherein the pressure from a pedal-operated master cylinder is adapted to actuate a rear-wheel brake and a front-wheel brake, and the pressure from a hand-operated master cy... | 11/20/1979 |
| 4170386 | Control for a two stage master cylinder A two stage master cylinder having a bore with a first diameter and a second diameter separated by a shoulder. A first piston is located in the first diameter of the bore to establish a first chamber. A second piston has a first section located in the fir... | 10/09/1979 |
| 4161105 | Tandem master cylinder A tandem master cylinder comprises two pistons, one of which includes a cylindrical bore for receiving therein the other piston, and limiting means for limiting the axial movement of the other piston.... | 07/17/1979 |
| 4078384 | Three function master cylinder A fluid motor having a housing with a stepped bore for retaining a first piston and a second piston. A sleeve is located in the stepped bore to permit the first piston and the second piston to be of substantially the same diameter. A plug attached to the ... | 03/14/1978 |
| 4072011 | Hydraulic brake booster A brake booster for use in a braking system having a control valve which is responsive to a hydraulic output force created by manually moving a piston in a bore of a master cylinder. The hydraulic output force actuates the control valve which proportional... | 02/07/1978 |
