Famous Patents
Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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 |
| 5439275 | Signal generator A signal generator for generating an electrical signal which varies in accordance with movement of an actuating member includes a plunger slidable mounted within a housing which carries a pair of permanent magnets for generating a magnetic field to be app... | 08/08/1995 |
| 5409262 | Vehicle safety system A safety system is provided which allows a vehicle to collapse upon impact, thus absorbing energy. The vehicle includes a front frame and a rear frame, which are slidably engageable with one another. Upon impact, the front and rear frames translate, thus ... | 04/25/1995 |
| 5378054 | System to conserve stop lamp circuit power on intermediate vehicles of vehicle train A fluid pressure system and stoplight control circuit for a towed vehicle which is either an intermediate unit or the last unit of a vehicle train includes an inlet supply line for receiving fluid pressure from a preceding unit and an outlet supply line w... | 01/03/1995 |
| 5378266 | Air dryer system A compressed air system includes an air drying subsystem which can be configured either in an intermittent mode, in which a separate purge volume intermittently purges the desiccant used by the air drying systems when the compressor goes off load, or in a... | 01/03/1995 |
| 5365791 | Signal generator A signal generator for generating an electrical signal which varies in accordance with movement of an actuating member includes a plunger slidable mounted within a housing which carries a pair of permanent magnets for generating a magnetic field to be app... | 11/22/1994 |
| 5346291 | Fluid pressure control valve with valve member mounted on guide pin slidably carried by piston A fluid pressure responsive valve includes a valve member mounted on a guide pin slidably carried by a piston. A valve guide is engaged by one side of the valve element, and the piston engages the opposite side. The piston controls the valve member. The v... | 09/13/1994 |
| 5340212 | Proportioning relay valve disabled by failed front braking circuit A fluid pressure braking system for a tractor-trailer combination vehicle includes a proportioning relay valve which controls communication to the rear wheel brakes of the tractor. When the tractor pulls a trailer, the proportioning control within the rel... | 08/23/1994 |
| 5341298 | Throttle traction control for automotive vehicle An engine traction control system generates a control cycle of a varying duty cycle which controls the pressure level in a pneumatic actuator in the engine power control linkage to thereby reduce engine power when the driven wheels begin slipping during t... | 08/23/1994 |
| 5176497 | Boreless hub compressor wheel assembly for a turbocharger An improved compressor wheel assembly for a a turbocharger or the like includes a centrifugal compressor wheel having a boreless hub to substantially improve wheel fatigue life. The compressor wheel is formed as by casting from an aluminum alloy to includ... | 01/05/1993 |
| 4944660 | Embedded nut compressor wheel An improved boreless compressor wheel and method for making same by utilizing an internally threaded nut member. The compressor wheel is either cast about the nut, or includes a cup friction welded to the compressor wheel, and carrying the nut member.... | 07/31/1990 |
| 4869561 | Three-channel adaptive braking system An adaptive braking system (10, 210) for an automotive vehicle provides a three-channel split pump-back system which may be utilized with either two- or three-chamber master cylinders. The three-channel adaptive braking system (10, 210) includes a first b... | 09/26/1989 |
| 4869350 | Wear indicator for a friction member of an automotive brake The wear indicator comprises essentially a coaxial cable (4, 5) of which the conducting core (4) and the conducting sleeve (5) are connected electrically by a socket (6, 6', 6", 6'41 ). One bared end of the core (4) is disposed on a wear limit plane of a ... | 09/26/1989 |
| 4865165 | Electrically actuated cable The electrically actuated cable mechanism (10) comprises a housing (12) disposed about the cable (15) and having a movable conduit (20) extending from one end and a stationary conduit (30) extending from the other end, each conduit (20, 30) being disposed... | 09/12/1989 |
| 4862738 | Test system for wheel bearings The wheel bearing test system (10) comprises a wheel (20) and bearings (40) mounted on an axle mechanism in order to effect realistic testing of the bearings (40). The axle mechanism (30) comprises a mandrel assembly (30) which is attached to a T-shaped c... | 09/05/1989 |
| 4861234 | Low-noise pump assembly The low-noise pump assembly (10) comprises a unitized assembly wherein a drive shaft (17) of the motor (16) is mated directly with an eccentric coupling (23). The eccentric coupling (23) has a through bore (21) which receives at one end the drive shaft (1... | 08/29/1989 |
| 4860541 | Two stage relief valve for master cylinder quick-fill chamber A two stage relief valve for a quick-fill master cylinder (10). The two stage relief valve (54) has a ball (88) that is biased against a first seat (82) to control the flow of fluid from a quick-fill chamber (30) and a unitary structure (55, 74) which is ... | 08/29/1989 |
| 4858737 | Hydraulic braking device for automobile vehicle The device comprises a tandem master cylinder, a booster high pressure fluid distributor, 2, a valve mechanism 4 to interconnect the master cylinder and the distributor selectively to a braking circuit. The high pressure circuit is connected to the pipeli... | 08/22/1989 |
| 4858438 | Hydraulic booster device for braking circuit The hydraulic booster device controls a ball valve (25) to establish a communication between a source of fluid at high pressure (35) and a braking circuit (29) during a normal braking. In the event of failure of the high pressure source (35), the braking ... | 08/22/1989 |
| 4857726 | Method to decode relative spectral data A method of encoding and decoding a binary modulated light spectrum to recover encoded intelligence. The method enables reliable and accurate decoding of wave division multiplexed data. The method incorporates a step of encoding data and a step of decodin... | 08/15/1989 |
| 4855336 | Friction material containing mill scale In a friction material wherein sponge iron is a principle friction producing component especially on initial engagement during a brake application, the improvement wherein 10-50% of the sponge iron is replaced with mill scale without a substantial change ... | 08/08/1989 |
| 4852952 | Hydraulic brake circuit for motor vehicle, having a dual circuit in the form of a cross and a wheel anti-lock device The circuit according to the invention is provided with a wheel anti-lock device of the type with independent control of the front wheels and control of the back wheel brakes by way of the pressure in the brake associated with the back wheel having the lo... | 08/01/1989 |
| 4850457 | Electrically actuated disc brake The electrically actuated disc brake (10) comprises a caliper (12) having a bore (16) receiving therein an actuating mechanism (90), and an electric motor (40) attached to the caliper housing (12). The actuating mechanism (90) comprises a planetary gear m... | 07/25/1989 |
| 4850454 | Disc brake lining wear sensor A disc brake lining wear sensor (40) comprises a plastic encapsulated lining wear sensor (40) having a support bracket (42) which is attached to a support member (12) of the disc brake (10). The inner brake pad (16) has a peripherally projecting portion (... | 07/25/1989 |
| 4850459 | Electrically operated drum brake The electrically operated drum brake (10) comprises an electric motor assembly (80, 180) disposed between opposing ends (62, 72) of two brake shoes (12, 14), the electric motor assembly (80, 180) replacing both the hydraulic wheel cylinder and the parking... | 07/25/1989 |
| 4850802 | Composite compressor wheel for turbochargers A composite compressor wheel for turbochargers and the like comprises a cast shell having aerodynamically contoured centrifugal impeller blades and a hub section defining a generally conical recess into which a hub insert of noncast material resistant to ... | 07/25/1989 |
| 4852079 | Optical spectral analyzer An optical spectral analyzer (10) for receiving an input beam (30) through a multi-mode optic fiber (28). The input or beam (30) has a predetermined spectral band width. The random individual spectral components of the beam (30) are dispersed by a grating... | 07/25/1989 |
| 4850390 | Servo device for controlling the flow rate of a hydraulic system, in particular the power-assisted steering of a vehicle The flow-rate control device (10), which is arranged in a branch line (6), comprises a slide (19) forming, together with an outlet channel, a variable constriction (ς1), the slide being biased by a spring, one end of which bears against the en... | 07/25/1989 |
| 4848526 | Multiple disc brake Multiple disc brake comprising a first rotary disc fixed to a hub connected to a rotating member to be braked and at least one second rotary disc capable of sliding axially relative to the hub and to the first disc. A first axial guide sleeve (16) fixed t... | 07/18/1989 |
| 4844212 | Mechanically actuated brake with automatic adjustment The mechanically actuated brake (10) with automatic adjustment comprises an integral support plate (20) having first (22) and second (24) axially extending support bars which position associated pairs of brake shoe ends (13, 15, 17, 19). The brake shoe en... | 07/04/1989 |
| 4844118 | Rotary hydraulic distributor for a servo mechanism This distributor comprises an external element (3) mounted rotatably in a housing (1) and an internal element (10) mounted rotatably in the external element and capable of a limited rotation on either side of a neutral position. The external element (3) h... | 07/04/1989 |
| 4843820 | Brake system in-line fast fill valve The brake system in-line fast fill valve (10) of the present invention comprises a valve housing (12) which may be threadably inserted within the body of a master cylinder so that an inlet (28) at one end of the fast fill valve (10) communicates with an o... | 07/04/1989 |
| 4844119 | Integrated three-way and isolation solenoid valve A control valve (10) comprises a valve assembly (12) having a stepped bore (18) which communicates with a first inlet (30) from a master cylinder, a second inlet (40) from a pump, a first outlet (50) to a wheel brake, and a decay outlet (60) permitting fl... | 07/04/1989 |
| 4843232 | Optic switch and speed sensor An electro-optic speed sensor for sensing the speed of rotation of a rotating sending unit which includes an optical switch transducer for sensing disturbances in a magnetic field caused by the passage of a rotating magnetic sending wheel on the rotating ... | 06/27/1989 |
| 4840594 | Method for manufacturing electrodes for a spark plug A method of manufacturing for a spark plug (82) having a center electrode (80) and a side wire electrode (62) with a sphere of platinum (34, 68) mechanically retained in a cylindrical hole (34, 66) by an annular rib (40, 70) formed by a staking operation.... | 06/20/1989 |
| 4838620 | Traction system utilizing pump back based ABS system The present invention relates to systems for controlling wheel spin in a motor vehicle such as an automobile, and in particular to such a system which includes a pump-back adaptive braking system and a traction control system which utilize a common pump a... | 06/13/1989 |
| 4835963 | Diesel engine particulate trap regeneration system A diesel engine exhaust particulate trap and regeneration system for trapping of particulates in the engine gases and periodic burning thereof is disclosed. Collected particulates are burned in the trap by increasing the trap temperature utilizing a backp... | 06/06/1989 |
| 4837073 | Barrier coating and penetrant providing oxidation protection for carbon-carbon materials The invention provides a method for utilizing the inherent oxygen-blocking characteristics of a barrier coating for a carbon-carbon material by penetrating cracked, porous areas of the coating with an oxygen inhibitor. The inhibitor will complex with acti... | 06/06/1989 |
| 4837508 | Process and device for checking the operational state of a variable reluctance magnetic sensor and their application to automobile electronics The device includes a comparator (4) fed by a quasi-sinusoidal signal (3) delivered by a variable reluctance sensor, for converting alternations of the signal into pulses acceptable by digital computing means. According to the invention, the device includ... | 06/06/1989 |
| 4837697 | Overspeed governor for an electronic controlled fuel system A fuel management system (34) for a turbine engine (10) having a metering valve (50) controlled by the input of an electronic computer (36) to a resolver (48). A head sensor (64) responds to pressure differential across the metering valve (50), to control... | 06/06/1989 |
| 4836089 | Series spool pressure regulator arrangement for a double-acting hydraulic actuator A regulator arrangement (14) for a servo system (10) having a first stage valve spool piston (44) for developing a primary operational fluid (Pc) and a second stage valve spool piston (70) for developing secondary operational fluid Pcr | 06/06/1989 |
