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| Number | Title | Issue Date |
| 7216580 | Multistage stroke cylinder apparatus A multistage stroke cylinder apparatus includes a main cylinder having a main piston and a main rod, an intermediate stop position setting mechanism for setting an intermediate stop position of the main piston, and a return position setting mechanism for setting a r... | 05/15/2007 |
| 7209806 | Self-contained electronic pressure monitoring and shutdown device The invention is a self-contained process shutdown device that detects abnormal pressures and initiates shutdown by removing the pneumatic or hydraulic pressure needed for a given process or flow to continue. The process' pressure is detected by means of a switch-ga... | 04/24/2007 |
| 5983777 | Method and apparatus for diaphragm pumping with adjustable flow An improved method and apparatus for adjusting the flow of a diaphragm pump. The thickness of the diaphragm itself is capable of being adjusted. Full stroke output is thereby reduced in inverse proportion to the increased volume occupied by the diaphragm.... | 11/16/1999 |
| 5979864 | Double convoluted pliable pressure conversion unit A rotary valve actuator with movable actuator linkage maintained in a constant "pull-pull" tension, includes a sliding canister, rotatable lever, and a return spring substantially aligned in-line with each other. The linear motion of the canister in respo... | 11/09/1999 |
| 5761983 | Output shaft of booster An improvement of an output shaft of a booster is disclosed. An output shaft 23 is formed by a push rod 24 and an adjusting screw 25. The push rod 24 is formed with an axial bore 26 in its distal end, the axial bore including a portion 26b of a reduced di... | 06/09/1998 |
| 5759015 | Piezoelectric micropump having actuation electrodes and stopper members A micropump including two glass sheets (2, 8) with a machined silicon board (6) sealingly inserted therebetween. An inlet valve (12), a pumping chamber (50) and an outlet valve (28) are arranged between an inlet (10) and an outlet (4). A pump diaphragm (5... | 06/02/1998 |
| 5437218 | Diaphragm pump having variable displacement Diasphragm pump having a delivery rate which can be continuously adjusted between a zero value and a maximum value, comprising: a continuously rotating eccentric drive member (6); a connecting rod (5) with a connecting-rod big end (11-14) fitted with a bearing... | 08/01/1995 |
| 5435229 | Disposable preload tool for vacuum actuators A fluid pressure actuator assembly (44) adapted for use with a valve member (42) is disclosed, the actuator being of the type comprising a housing assembly (50), and an axially moveable diaphragm assembly (56). A linkage member (48) is operably associated... | 07/25/1995 |
| 5429484 | Liquid feed pump particularly used for liquid medicine and liquid feed apparatus for filling of liquid medicine A metallic diaphragm is provided within a pump chamber. This diaphragm is oscillated by a stem to Feed liquid medicine. The stem is provided with a plate and a movement of this plate, i.e., a stroke of the stem is limited by a pair of stoppers. Relative p... | 07/04/1995 |
| 5335582 | Vacuum brake booster In a method of manufacturing a brake booster, a step of defining a fixed distance between a peripheral surface on a rear shell of the brake booster and an eye of a linkage member attached to a brake pedal when the movable wall is in a rest position. The w... | 08/09/1994 |
| 5190263 | Locking mechanism for an actuator A locking mechanism for an actuator prevents the unauthorized operation of the actuator and also permits a viewer to determine whether the actuator is in a locked open, locked closed or unlocked position. The invention utilizes a clear cover guard which i... | 03/02/1993 |
| 5074763 | Telescopic moving equipment for driving a reciprocating pump Moving equipment for applying reciprocating drive to the diaphragm of a mechanically actuated diaphragm pump of adjustable stroke, the moving equipment comprising a slider slidably mounted in a fixed guide co-operating at one of its ends with an eccentric... | 12/24/1991 |
| 5044891 | Variable displacement diaphragm pump A power source (14) rotates an eccentric (20) engaged within the center of a relatively large drive roller (22) to rotate the drive roller while simultaneously orbiting the center of the drive roller about a circular path so as to cyclically advance and r... | 09/03/1991 |
| 4869397 | Adjustable fill motor assembly A control arrangement is provided which permits precise metering of a bellows pump. The control arrangement permits the predetermined setting of an amount of fluid to be dispensed from a single pump or a plurality of pumps. The control system permits a do... | 09/26/1989 |
| 4856966 | Variable displacement diaphragm pump A power source (14) rotates an eccentric (20) engaged within the center of a relatively large drive roller (22) to rotate the drive roller while simultaneously orbiting the center of the drive roller about a circular path so as to cyclically advance and r... | 08/15/1989 |
| 4806079 | Apparatus for simultaneously pumping a plurality of liquids Apparatus for simultaneously pumping two or more different liquids to a spraying device has a pair of discrete diaphragm pumps for each liquid. The pumps of each pair are connected in parallel and operate alternatingly so that one pump delivers a metered ... | 02/21/1989 |
| 4738108 | Brake power servo booster A brake power servo booster in which a power piston is slidably disposed in a shell, a master cylinder is connected to the brake pedal side of the shell, an input shaft is used to actuate a valve mechanism in order to generate a pressure difference betwee... | 04/19/1988 |
| 4671485 | Solenoid-operated pilot valve with adjustable flow control A solenoid-operated pilot valve of the diaphragm type which includes an assembly for controlling the flow of liquid through the valve. The valve has particular although not exclusive utility for irrigation purposes. The valve includes a diaphragm chamber ... | 06/09/1987 |
| 4655690 | Bellows pump having adjustable stop cam for varying the stroke A bellows pump with the improvement of an adjustable index for uniformly controlling the amount of fluid displaced in each expansion and compression cycle.... | 04/07/1987 |
| 4612847 | Vacuum control device for the displacement of an element between at least three positions A vacuum control device comprises a casing in which are disposed at least two substantially parallel movable cups, the first cup being connected to the element to be displaced. Springs are interposed respectively between the two cups and between the secon... | 09/23/1986 |
| 4495947 | High speed medical ventilator A swash plate assembly converts rotary motion to reciprocatory motion to reciprocate a diaphragm in a high frequency medical ventilator; the motor which drives the assembly is pivotally mounted for variation of the stroke of reciprocation thereby varying ... | 01/29/1985 |
| 4485727 | Pressure pilot switch point device An improved switch point setting device for fluid process sensors monitoring a process pressure, including a cylindrical housing, an elongated threaded shaft rotatably mounted in the housing, and a movable post member with a threaded base portion threadab... | 12/04/1984 |
| 4478107 | Suction cap for an automatic gearbox A suction cap for the control of the oil pressure regulation system in an automatic gearbox comprising an intermediate chamber bounded by a diaphragm, a housing and a bellows, with a spring connected, on the one hand, to a push-rod and engaging, on the ot... | 10/23/1984 |
| 4453380 | Method and apparatus for setting the idle stroke of a master-cylinder/servo assembly, and brake control unit adjusted by implementing this method According to the invention, the communication between the supply orifice (40,41) and the corresponding pressure chambers (38,39) of the master-cylinder (11) is tested while the stop (25) defining the rest position of the piston (15) of the servo is being ... | 06/12/1984 |
| 4367674 | Actuator device An actuator device used with an engine-idle control system of an automobile provided with an air-conditioner, and is adapted so as to operate an operating rod in association with a throttle valve opening lever of an internal combustion engine. The actuato... | 01/11/1983 |
| 4368010 | Apparatus for admitting liquid to the vessels of developing machines for photosensitive material A developing machine has a battery of vessels which receive metered quantities of liquid from discrete membrane-type pumping units. The pumping units constitute part of an apparatus having a single drive for the reciprocable membrane-deforming pumping ele... | 01/11/1983 |
| 4358990 | Negative pressure booster A negative pressure booster wherein a brake master cylinder of an automobile is boosted and operated under negative pressure. The booster comprises a booster shell, a booster piston to divide the interior of the booster shell into a first and second actua... | 11/16/1982 |
| 4339921 | Brake booster for an automotive vehicle The vacuum casing of vacuum brake boosters is conventionally made of sheet steel. The vacuum casing is subjected to pneumatic and mechanical forces absorbed by the casing parts. Accordingly, the casing parts must be suitably strong, which results in added... | 07/20/1982 |
| 4333889 | Carburetor vacuum break assembly A carburetor vacuum break assembly includes a telescopically constructed adjustable stop which permits adjustment of the carburetor choke vacuum break position but does not require an elongated sealing region about the stop.... | 06/08/1982 |
| 4325535 | Actuator mechanism for a rotary valve or the like An actuator for a rotary valve preferably embodying a diaphragm motor operated by pressure fluid. A driving sleeve is reciprocated linearly by the diaphragm motor and within said sleeve is a rotatable shaft, which is axially aligned with the diaphragm mot... | 04/20/1982 |
| 4320693 | Adjustment for carburetor control devices An arrangement for adjustments on carburetor control devices by which the adjustment is sealed to prevent unauthorized readjustment, leakage or accidental movement out of adjustment by the use of a heat shrinkable tube or cap shrunk into contact with both... | 03/23/1982 |
| 4306639 | Disc brake caliper with molded flex piston A light weight metal caliper housing has cored holes in the cast bore. A nylon bore insert lines the bore side wall. A molded flex piston has hydraulic fittings incorporated as a part of it and the fittings extend through the cored holes. The center porti... | 12/22/1981 |
| 4302163 | Adjustable output pump for liquids An adjustable expansible chamber pump for liquids is disclosed, which is resistant to corrosion and which preferably utilizes a compressible bellows of synthetic plastic material, which is compact, which has improved expansible chamber actuating mechanism... | 11/24/1981 |
| 4297089 | Arcuate tubular pump A pump for a multi-cylinder piston engine has a plurality of C-shaped tubular members each with a hollow interior which has one end open to the hollow interior and sealably mounted to a housing with an inlet and outlet with a passage in communication with... | 10/27/1981 |
| 4284261 | Stroke adjustment for vacuum motor A vacuum motor for controlling a carburetor choke valve in which the stroke of the motor is limited to a predetermined length for a predetermined period of time after which the length of stroke is increased a predetermined amount.... | 08/18/1981 |
| 4186649 | Regulators A regulator for regulating the output of an output shaft is discosed, the regulator comprising a number of chambers to and from which working medium can be fed and discharged in dependence upon control means to effect axial movement of the output shaft vi... | 02/05/1980 |
| 4167896 | Pump for auger treater A positive displacement pump for metering liquid chemicals and applying such chemicals into grains such as seed being conveyed through a screw conveyor, the pump including a reciprocating rod operated by an eccentric cam on the screw conveyor shaft, the p... | 09/18/1979 |
| 4165819 | Mobile equipment for air-flushing, filling and venting a hydraulic brake system A push-cart mounted tank body contains an annular compressed air tank encircling a coaxial brake fluid supply tank that is never under pressure in operation, superimposed on a hemispherical pressure chamber which on its flat bottom side is terminated by a... | 08/28/1979 |
| 4132509 | Peristaltic pump with means to vary relative pumping volume between tubes A device for entering dyes having a consistency, which may vary from a liquid to a pulverous state, into synthetic material processing machines, especially extrusion and injection molding machines, by means of a hose pump adjustable as to the quantity bei... | 01/02/1979 |
| 4124334 | Diaphragm pump The invention involves an improved design for a diaphragm pump. The inlet and outlet valves for the pump have guided stems that prevent the valves from misaligning and jamming during operation. The stems extend away from each other enabling the valve head... | 11/07/1978 |
