Quotables
"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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 |
| 8046996 | Master cylinder assembly for a hydraulic actuation system for a handlebar-steered vehicle A master cylinder assembly for a hydraulic actuation system for a handlebar-steered vehicle including a fluid cavity having an adjustable length. The master cylinder assembly generally includes a housing, a piston assembly, an actuator and an adjuster. The housing i... | 11/01/2011 |
| 7963114 | Hydraulic brake lever assembly A hydraulic brake lever assembly includes a master cylinder, a master piston, and a floating piston. Both of the master piston and the floating piston are sealingly and movably received in the master cylinder. The master piston has a passage diametrically defined th... | 06/21/2011 |
| 7757488 | Master cylinder assembly for a hydraulic actuation system for a handlebar-steered vehicle A master cylinder assembly for a hydraulic actuation system for a handlebar-steered vehicle. The assembly includes a housing mountable to a frame member of the handlebar-steered vehicle and having a chamber including a fluid cavity with first and second regions. The... | 07/20/2010 |
| 7628014 | Hydraulic transmitting device In order to create a hydraulic transmitting device for vehicles, in particular, for vehicles steered by handlebars, comprising a housing with a hydraulic master cylinder, in which a movable piston is arranged, an actuating lever movable relative to the housing and a... | 12/08/2009 |
| 7540147 | Master cylinder lever for a hydraulic brake with dead-band adjustment mechanism A master cylinder assembly for a bicycle disc brake having a housing defining a cylinder, a piston received in the cylinder, a lever pivotably attached to the housing, and an adjustment guide body that is operatively associated with the piston. The piston is moveabl... | 06/02/2009 |
| 7493761 | Hydraulic pressure feeder and motorcycle provided with the hydraulic pressure feeder A hydraulic pressure feeder suppresses wavy motions and bubbles in working oil in a reservoir tank. A hydraulic braking device includes a master cylinder mounted to a handle bar to accommodate therein a piston mechanism. A reservoir tank replenishes the piston mecha... | 02/24/2009 |
| 7395667 | Electrically driven power brake booster An electrically driven power brake booster having an electrically driven actuator. A lever is pivotably attached to a first pivot point coincident with a the pivot point of the operator controlled primary brake pedal lever. The lever has a first end and a second end... | 07/08/2008 |
| 7360632 | Apparatus for controlling hydraulic brakes in bicycles, motorbicycles and the like Apparatus for controlling brakes in bicycles and the like, to be used, in particular, for disc brakes mounted on bicycles, with a pump (8) connected with a relevant reservoir (88) for the fluid of the hydraulic circuit, and comprising a piston (89 | 04/22/2008 |
| 7222703 | Apparatus for controlling hydraulic brakes in bicycles, motorbicycles and the like Apparatus for controlling brakes in bicycles and the like, made with a pump connected to a relevant reservoir, characterized in that the reservoir is disposed inside a containment body and exhibits a concave portion shaped complementarily to a handlebar's portion to... | 05/29/2007 |
| 7204350 | Master cylinder lever for a hydraulic disc brake having favorable handle pivot geometry A bicycle hydraulic disc brake master cylinder includes a housing having a bar clamp at one end configured for fastening the housing to a bicycle handle bar, the bar clamp receiving the handle bar along a clamp axis. A handle is pivotably connected to the housing to... | 04/17/2007 |
| 7204088 | Lever device for hydraulic operation In a lever device for a hydraulic operation where hydraulic pressure is generated in a master cylinder by rotation of a lever, to make invariable an operation of a pushrod, which operates a piston of the master cylinder by being pushed at one end thereof by an adjus... | 04/17/2007 |
| 7178646 | Master cylinder lever for a hydraulic disc brake having a backpack reservoir A master cylinder for a bicycle hydraulic disc brake includes a cylinder wall defining a cylinder interior and a cylinder exterior. A piston is received within the cylinder interior. A reservoir for hydraulic fluid is defined in part by a portion of the cylinder ext... | 02/20/2007 |
| 7137492 | Apparatus for controlling hydraulic brakes in bicycles, motorbicycles and the like Apparatus for controlling brakes in bicycles and the like, to be used, in particular, for disc brakes mounted on bicycles, with a pump (8) connected with a relevant reservoir (88) for the fluid of the hydraulic circuit, and comprising a piston (89 | 11/21/2006 |
| 7114335 | Apparatus for controlling a hydraulic circuit for clutches Apparatus for controlling a hydraulic circuit to be used for operating hydraulic clutches with a pump (8) connected with a relevant reservoir (88) for the fluid of the hydraulic circuit and comprising a piston (89) sliding within a relevant cham... | 10/03/2006 |
| 7100751 | Hydraulic pump for vehicles controllable by handlebars A master cylinder which has an unusual ability to limit space requirements, to be fitted in vehicles controllable by handlebars, comprises a cylinder body provided with a seat for housing a portion of the handlebar. A chamber for slidably housing a piston extends al... | 09/05/2006 |
| 7055323 | Oil pressure generator for a vehicle An oil pressure generator for a vehicle is disclosed, including a bar-shaped steering handle having a pipe structure, a lever pivotally mounted in the vicinity of an end portion of the handle, and a master cylinder for a hydraulic brake or a hydraulic clutch, the ma... | 06/06/2006 |
| 7032475 | Hydraulic gear shift mechanism A hydraulic shift gear mechanism for a bicycle having a positioning mechanism for controlling the motion of the piston of a master cylinder assembly is described. The master cylinder assembly is in communication with a slave cylinder for operation of a derailleur. T... | 04/25/2006 |
| 6957534 | Reach adjustment mechanism for a master cylinder lever of a hydraulic disc brake A master cylinder for a hydraulic disc brake includes a housing defining a cylinder, the cylinder having a first and second end along its axis. A piston is received in the cylinder and has a radial seal between the piston and the cylinder. A lever is pivotably assoc... | 10/25/2005 |
| 6928813 | Stroke gain device for a master cylinder A master cylinder wherein an input force applied to a bearing assembly pushes and rotates an input piston into a bore of a housing through the engagement between a helical groove on its outer surface and a pin on the housing to act on a primary piston in the bore th... | 08/16/2005 |
| 6929104 | Vertically oriented dual circuit pilot master cylinder A dual circuit pilot master cylinder for a full power brake system provides a minimally sized package for installation in a vehicle cab interior. The master cylinder utilizes a side-by-side disposition of the primary and secondary cylinders and a brake pedal linkage... | 08/16/2005 |
| 6922994 | Hydraulic pump for vehicles controllable by handlebars A hydraulic pump for vehicles controllable by handlebars, having an unusually small space requirement, including a reservoir suitable for containing a working fluid having a free surface at the top, a pump body provided with a wall which delimits a cavity, and also ... | 08/02/2005 |
| 6871729 | Master cylinder for a brake or clutch of a motorcycle or bike A brake/clutch master cylinder for a motorcycle/bicycle or the like, with a body which is produced by moulding of plastics material reinforced by glass fibre without the need for machining operations or metal inserts and which forms, together with the cylindrical sh... | 03/29/2005 |
| 6804961 | Master cylinder lever for a hydraulic disk brake having on the fly dead-band adjustment A master cylinder for a bicycle hydraulic disc brake includes a cylinder having a port in fluid communication with a hydraulic fluid reservoir. The port opens to the cylinder between first and second ends of the cylinder. A piston within the cylinder is movable betw... | 10/19/2004 |
| 6739133 | Motorcycle control lever A control lever for operating a control system of a vehicle, such as a brake or clutch of a motorcycle, for example. The lever is especially useful with hydraulic control systems, for applying a force to a hydraulic piston of the control system. Preferably, the leve... | 05/25/2004 |
| 6370877 | Brake handle device for hydraulic brake assembly A brake handle device for a hydraulic brake assembly includes a barrel received in a housing and having an outer peripheral depression for forming an annular chamber between the barrel and the housing. A plunger is slidably received in the barrel and has ... | 04/16/2002 |
| 6338286 | Control device Apparatus for controlling the gears of a motor vehicle comprising a pivotable gear lever for pivoting between gear positions corresponding to the gear positions for the motor vehicle transmission, a primary hydraulic piston/cylinder arrangement coupled to... | 01/15/2002 |
| 6336327 | Master cylinder device for vehicles In a master cylinder device for a vehicle having a master cylinder with a cylinder body attached in the vicinity of a grip of a steering bar handle, and an operating lever which is supported on the cylinder body through a pivot and is pulled toward the gr... | 01/08/2002 |
| 6282896 | Idle stroke shortening device in brake system A brake system 1 of the invention comprises a brake pedal 2, a booster 3 which boosts the input force applied by the brake pedal 2 and outputs the boosted force, a travel amplifying mechanism 4 which amplifies the travel of an output shaft of the booster ... | 09/04/2001 |
| 6141964 | Front brake master cylinder relocation kit A front brake master cylinder relocation kit which may be used for example on Harley-Davidson.RTM. motorcycles. The kit includes a master cylinder; a brake cable; a hand lever capable of being mounted on a handlebar; a brake hose; a mounting bracket, for ... | 11/07/2000 |
| 6047546 | Operation device of a hydraulic master cylinder For an automatic hydraulic pressure generator in which a hydraulic master cylinder driven by a computer-controlled motor lets in or takes out a friction clutch, an operation device is provided that can make the piston rod of the hydraulic master cylinder ... | 04/11/2000 |
| 5987887 | Master cylinder A master cylinder for a hydraulic friction clutch, said master cylinder being connected to a physically actuatable pedal by a piston rod (17) which is articulated in semi-shells (14) enclosed in a piston skirt bushing (10), an end of said piston skirt bus... | 11/23/1999 |
| 5878574 | Master cylinder having nested concentric pistons An improved force transfer arrangement for use in a dual circuit master cylinder having a pair of nested concentric pistons for pressurizing a pair of respective fluid chambers, wherein the force transfer arrangement imparts an input force from an input p... | 03/09/1999 |
| 5813230 | Brake linkage and master brake cylinder A brake system is provided in which, in the normal operation, the brake pressure in the wheel brake cylinders is generated in a power-assisted manner and the master brake lines are closed by change-over valves. During a functional disturbance, the brake p... | 09/29/1998 |
| 5775104 | Hydraulic apparatus for actuating a punch for a clutch facing machine A rotary drive unit powers a double-acting cam and a Geneva drive. The cam actuates two double-acting pumps which supply pressurized hydraulic fluid to a double-acting motor. A punch is reciprocated by the motor to punch sectors from a sheet material. The... | 07/07/1998 |
| 5636518 | Operating mechanism for a hydraulic master cyclinder An operating lever mechanism for a master cylinder which includes a mounting bracket (12) and a lever (23) mounted on the bracket trough a pivot pin (22). The lever is connected to a master cylinder actuating rod (25) and the pivot pin (22) is adjustably ... | 06/10/1997 |
| 5634337 | Assembly of a pneumatic brake booster and of a master cylinder An assembly of a pneumatic brake booster (100) and a master cylinder (200) for a motor vehicle. The pneumatic brake booster (100) has a casing (20) fixed to the bulkhead (10) of the vehicle. The casing is divided in leaktight fashion by a movable wall str... | 06/03/1997 |
| 5549367 | Liquid pressure controller The liquid pressure controller includes an operating piston directly operated by a mechanical member such as a brake or clutch. An acting piston is connectable to the operating piston and directly acts for producing a liquid pressure of a portion to be op... | 08/27/1996 |
| 5481877 | Double acting pulsator with valved piston A gear shift device for gear boxes for vehicles, comprising at least one pair of mutually connected, double-acting hydraulic cylinders (1,2), where the pair consists of a master cylinder (1) and a slave cylinder (21). The master cylinder can be operated v... | 01/09/1996 |
| 5337565 | Device for driving a tool movable to and fro in axial direction A device for driving a tool in axial direction in the course of a vibration-like forward and reverse movement, which operates at high efficiency with a rapidly oscillating stroke frequency and can be used as an easily handled hand-held appliance because, ... | 08/16/1994 |
| 5201178 | Hydra-jack screw A hydra-jack screw apparatus is provided for exerting a force against an object, for adjusting the magnitude of the force exerted against the object, and for providing a visual indication of the magnitude of the force exerted against the object. The appar... | 04/13/1993 |
