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| Number | Title | Issue Date |
| 7288323 | Vulcanized rubber composition and articles manufactured therefrom The rubber compositions described herein have been found to have an exceptionally long life as a spring-biased actuator diaphragm material that maintains its position compressed, e.g., bolted, between opposed flanges, while maintaining excellent compressibility, low... | 10/30/2007 |
| 7018475 | Device, method and arrangement for pressing two axis-parallel rollers approachable to one another in a device for producing and/or treating a web of material Two axially parallel rolls are pressed against each other in a device for producing and/or treating a moving material web. Sensor elements are arranged in the force transmission path running from the force-producing elements via the rolls, outside roll bodies of the... | 03/28/2006 |
| 6928920 | Wall arrangement for a servomotor A movable wall for separating an interior of a housing for a brake booster into a first chamber and a second chamber. The movable wall is characterized by a diaphragm, a backing plate and a hub member. The diaphragm has a peripheral bead secured to the housing and a... | 08/16/2005 |
| 6902043 | Driveline vehicle parking brake actuator A driveline vehicle parking brake actuator including a reciprocable piston, a spring guide having a tubular distal portion telescopically received on the piston and a radial proximal portion which is telescopically supported within the housing by an annular wear gui... | 06/07/2005 |
| 6893720 | Object coated with carbon film and method of manufacturing the same An object such as an automobile part, an image forming apparatus part, a bicycle part, other machine parts, a sport article or its part, a toy or its part, or a rain article or its part has a portion to be in contact with a contact object. The contact portion is mad... | 05/17/2005 |
| 5293811 | Missile control fin actuator system A control fin actuator (28) for a guided missile (20) includes a pressure actuator (40) having a slidable piston (44) inside a housing (42). Rolling diaphragm seals (50, 56) of the top piston face (46) and the bottom piston face (48) to the inside wall of... | 03/15/1994 |
| 5181452 | Bellows actuator A bellows actuator has at least one bellows chamber comprising at least three chamber segments arranged around an axis. Each of the chamber segments forms a radially outwardly extending protrusion comprising four chamber wall portions, which merge with on... | 01/26/1993 |
| 5142964 | Negative pressure booster A negative brake booster having a power piston 8 with a piston unit 8a extending in a radial direction, a cylinder unit 8b provided at a backward position in an axial direction and airtightly and slidably supported on a center plate 4. A front diaphragm 1... | 09/01/1992 |
| 5052274 | Tandem brake booster with return spring arrangement for rear piston chamber A rigid partition (18) internally delimiting a front space and a rear space in the outer casing (10) of a brake servo unit is fastened on an approximately cylindrical extension (14a) of a reinforcing plate (14) internally lining the front portion of the c... | 10/01/1991 |
| 5029515 | Pneumatic booster A pneumatic booster comprising a housing, a power piston separating the inside of the housing into a constant pressure chamber and a variable pressure chamber, a valve body attached to the power piston, an output shaft, a plunger slidably received in a bo... | 07/09/1991 |
| 4996904 | Negative pressure booster equipment In the negative pressure booster equipment 1 according to the present invention, a groove 27 is provided on the inner peripheral beads 14a and 16a of the diaphragms 14 and 16, fixed on the valve body 8 and forming the power pistons in order to communicate... | 03/05/1991 |
| 4984507 | Three chamber brake booster with variable pressure passages having a minimum channel length A brake booster of triple type comprises a shell in which constant pressure and variable pressure chambers are formed. According to the invention, individual variable pressure chambers defined within the shell communicate with a valve mechanism through re... | 01/15/1991 |
| 4831915 | Dual diaphragm three position actuator A dual diaphragm, multiposition vacuum actuator. Dual diaphragms in a housing define two vacuum chambers. A spring urges one diaphragm and an actuator rod extended, and the other diaphragm retracted. Vacuum in one chamber retracts the extended diaphragm a... | 05/23/1989 |
| 4794940 | Plural diaphragm valve A diaphragm valve for controlling fluid flow. The valve contains a first and second diaphragm and a piston therebetween. The piston cooperates with the diaphragms controlling their movement within predetermined limits. The piston is preferably limited in ... | 01/03/1989 |
| 4754776 | Pneumatic control valves with diaphragm actuators and modular body structure Pressure fluid control valves include modular body structures made up of a plurality of end to end connected body parts which are preferably finish fabricated by injection molding of thermoplastic. An axially movable closure member is supported in coaxial... | 07/05/1988 |
| 4610483 | Vehicle brake system In a vehicle brake system including a pneumatic force multiplier apparatus in which a power piston moves by virtue of a pressure difference between atmospheric and negative pressure, a manual brake switch is provided to apply braking force without need fo... | 09/09/1986 |
| 4516599 | Valve mechanism for low temperature applications A valve mechanism for low temperature applications comprising an outlet for a low temperature fluid, valve means for opening and closing said outlet, an axially movable rod having one end secured to said valve means and the other end extending outwardly t... | 05/14/1985 |
| 4510849 | Apparatus for synchronizing actuators An apparatus for synchronizing a plurality of actuators, comprising a pressure fluid source 15 associated with a setting device 6, with transmitters 10 of the movements of the operating members 5, and also with multichamber adding elements 17 equal in num... | 04/16/1985 |
| 4494445 | Tandem-type brake booster A tandem-type brake booster including a closed shell assembly composed of front and rear chambers defined by a partition member therein and power pistons coaxially disposed in the front and rear chambers, respectively, the power pistons being operatively ... | 01/22/1985 |
| 4434619 | Brake master cylinder assembly A brake master cylinder assembly comprising a cylinder body having a stepped axial bore with large and small diameter portions, a tubular piston slidably disposed in the large diameter portion, and a primary piston one end being slidably disposed in the t... | 03/06/1984 |
| 4245549 | Control device diaphragm stack and method of making the same A diaphragm stack for a control device and having at least two flexible diaphragms separated by a rigid spacer and a pair of rigid outboard members with the pair of outboard members being secured together by a fastening means passing through the center of... | 01/20/1981 |
| 4242007 | Method and apparatus for dispensing welding flux A method and apparatus for dispensing welding flux involving a flux supply and dispensing system comprising a tank assembly that includes an upper flux receiving chamber, a lower flux dispensing chamber, and a flux transfer chamber intermediate the upper ... | 12/30/1980 |
| 4239181 | Valve positioner and method of making the same A self-contained valve positioner having a single valve positioner housing including an actuator portion and having a pneumatically operated actuator unit therein carrying a main valve member to position the main valve member relative to a main valve seat... | 12/16/1980 |
| 4237076 | Two stage vacuum break A two stage vacuum break or fluid motor device of the type used to control choke valves of internal combustion engine carburators. The motor uses a single diaphragm in which the fluid motor plunger operates in a first stage in response to movement of a po... | 12/02/1980 |
| 4210310 | Fluid control valves A sphincter valve for the control of fluid flow is characterized by a pair of diaphragms spaced apart from one another and having different effective areas. The smaller-area diaphragm is adapted for deflection into sealing engagement with a seating to con... | 07/01/1980 |
| 4147094 | Vacuum operated device A vacuum operated device is provided with a first vacuum chamber defined by a part of a casing and a first diaphragm; a second vacuum chamber defined by the first diaphragm, another part of the casing, and a second diaphragm; and a rod. The first vacuum c... | 04/03/1979 |
| 4069742 | Power brake booster system A single-piece piston in a dual diaphragm brake booster provides mounting for both diaphragms and support and guide sections for the primary and secondary piston bearings while eliminating the threaded assembly of prior two-piece pistons, or other interlo... | 01/24/1978 |
| 3941035 | Control unit and method A control unit which is particularly useful in controlling the output pressure of a turbocharger in response to the manifold pressure with compensation for pressure drop at the throttle characterized by a reference unit disposed in the housing for the man... | 03/02/1976 |
