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| Number | Title | Issue Date |
| 7647861 | Apparatus to seal a shaft to a diaphragm for use in diaphragm actuators Apparatus to seal a shaft to a diaphragm in a diaphragm actuator are disclosed. An example apparatus for use in a diaphragm actuator has a central aperture and an integral sealing protrusion disposed about a circumference of the central aperture. The sealing protrus... | 01/19/2010 |
| 7373872 | Diaphragm pump A diaphragm pump (1) is provided with an annular working chamber (6) and an annular diaphragm (3), which is fixed on its outer peripheral region (12) and on its inner edge region (13). The inner and the outer diaphragm fixing point... | 05/20/2008 |
| 7364394 | Break away fastening system A fastening system is providing, the fastening system has a weld stud having an annular weldment portion and a fracturable nut. The fracturable nut and stud construction is configured to fail under torsional load prior to the structural parts failure. ... | 04/29/2008 |
| 7354190 | Two-stage mixing system, apparatus, and method A two-stage mixing system, apparatus, and method produces a solution including a first substance and a second substance in a predetermined ratio by first mixing the first substance with a first liquid to produce a first solution and then mixing the first solution wi... | 04/08/2008 |
| 7137332 | Actuator An actuator is provided to generate an ultrafine stroke according to a fluid input pressure such as air pressure or the like. A throughhole 12 is formed in a center part of a body 10 so as to traverse a body 10 having plural notches 21–24 | 11/21/2006 |
| 7090474 | Diaphragm pump with overfill limiter A diaphragm pump which overcomes the problem of diaphragm failure due to overfill of the oil transfer chamber. An overfill preventive element in the form of a mechanical stop, a fully closed coil spring, or a valve system, or alternatives are provided. ... | 08/15/2006 |
| 6953323 | Medical fluid pump A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a pump for a dialysis system is provided. The pump includes a first chamber wall including a first aperture, a second chamber wall including a second aperture, a pi... | 10/11/2005 |
| 6899015 | Safety device for spring brakes The present invention relates to a safety device for spring brakes comprising a C-clamp, the opening of which is just fit to accommodate the edges of the two chambers and the diaphragm of an air brake; and a body plate, which is being cast with the C-clamp as one in... | 05/31/2005 |
| 6662708 | Pneumatic actuator canister A pneumatic actuator canister body employs a press fit cup received over an end portion of the canister to engage mounting studs extending through apertures in the end wall of the body and an end plate internally engaging the end wall. Heads of the studs ... | 12/16/2003 |
| 6647860 | Thin-walled brake diaphragm A fabric reinforced, resilient brake diaphragm for use in a fluid pressure operated braking system is provided. The diaphragm comprises an annular outer flange for engaging the housing of the braking system, a bottom planar wall having an interior surface... | 11/18/2003 |
| 6289786 | Brake actuator having an improved piston and method of making same A vehicle brake actuator including an improved piston assembly having a piston plate including an upstanding annular rim portion and a piston rod including a shank portion having a generally cylindrical head portion and an annular rim portion on a free en... | 09/18/2001 |
| 6286413 | Diaphragm actuator A multiple diaphragm actuator for exerting linear forces of precise and repeatable amounts in opposite directions with no friction and no fluid leakage.... | 09/11/2001 |
| 6212996 | Thin-walled brake diaphragm A fabric reinforced, resilient brake diaphragm for use in a fluid pressure operated braking system is provided. The diaphragm comprises an annular outer flange for engaging the housing of the braking system, a bottom planar wall having an interior surface... | 04/10/2001 |
| 6105904 | Deployable flow control device A deployable flow control device for a flow surface over which fluid having a fluid boundary layer flows which fluid boundary layer exhibits certain dynamics is disclosed. The deployable flow control device comprises a flow effector which is movably attac... | 08/22/2000 |
| 5638737 | Spline pumping assembly The present invention relates to a piston assembly for use in a fluid delivery system. The piston assembly is comprised of two elements: a splined-piston having generally a convex shape and a ribbed-base, that receives the piston, which has a complementar... | 06/17/1997 |
| 5417144 | Power transmission device for linear movements Power transmission device for linear movement, comprising a principal member (2), which is movable along a displacement path, and a housing (1) which presents bearing means (10) for the movement of the member along the displacement path. A guide member (3... | 05/23/1995 |
| 5363743 | Fluid pressure servomotor A fluid pressure operated servomotor having a housing shell containing a flexible diaphragm forming a fluid pressure chamber with a port through the housing connectable for receiving a fluid pressure signal. The diaphragm has a rigid insert extending ther... | 11/15/1994 |
| 5293808 | Vacuum brake power booster A vacuum brake power booster and a process is disclosed in which a precise adjustment of the power boost startup characteristic is achieved. The adjustment is carried out as a final step in the manufacture of the booster adjusting the distance between the... | 03/15/1994 |
| 5257572 | Vacuum brake power booster with piston retainer element and ventilation duct A vacuum brake power booster is described wherein the return movement of a valve piston actuating a control valve is limited by a U-shaped element (17) slidable into a control housing (11). In order to improve the ventilation of the working chamber of the... | 11/02/1993 |
| 5178055 | Vacuum booster A vacuum booster includes a booster piston having a front surface facing a vacuum chamber, a diaphragm superposed on the rear surface of the booster piston and having a rear surface facing a working chamber adapted to be selectively put into communication... | 01/12/1993 |
| 4896753 | Bicycle brake A bicycle brake system with at least one master cylinder that is connected to a hand lever, and at least one wheel cylinder that is connected thereto by a hydraulic brake line is to be improved in that a hollow body (38) that is of elastic material and cl... | 01/30/1990 |
| 4845322 | Plunger type fluid pressure switch A pressure receiving member which has a diaphragm held in a pressure receiving case is manufactured independently of a main sensor body member, which has a switch accommodated in a switch case. The pressure receiving member and the main sensor body member... | 07/04/1989 |
| 4830232 | Fluid dispenser valve with rolling diaphragm A valve for dispensing a liquid such as soap or hand lotion, from a fluid dispenser. A valve body for mounting in the fluid dispenser and having a valve chamber with a rolling diaphragm carried in the body dividing the chamber into a piston section and a ... | 05/16/1989 |
| 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 |
| 4757763 | Automatic blanket cylinder cleaner An automatic blanket cylinder cleaner having a cleaner fabric adapted to contact the blanket cylinder. A cleaning cloth supply roller provides cloth for the cloth take-up roll. Positioned between these rolls is a water solvent dispensing tube, a solvent d... | 07/19/1988 |
| 4679582 | Gas pressure reducing regulator A gas pressure reducing regulator for use with high inlet pressures is provided. The regulator includes a diaphragm plate for shielding the diaphragm from deleterious effects of flame and debris during unwanted combustion.... | 07/14/1987 |
| 4657490 | Infusion pump with disposable cassette An infusion pump incorporates a cassette formed by bonding of two substantially flat sheets. The fluid to be infused to the patient comes into contact only with the cassette. The cassette includes first and second flexible sheets which define a pumping ch... | 04/14/1987 |
| 4638721 | Pressure responsive device A pressure responsive device suitable for high pressure hydraulic applications has a formed metal disc or diaphragm adapted to move from an original dished configuration toward an inverted dished configuration with snap action in response to the applicati... | 01/27/1987 |
| 4620562 | High pressure regulator valve A pressure regulating valve for controlling pressure in high pressure hydraulic circuits includes a closure member with an integral control piston and a conical seating surface cooperable with a complementary surface on a seat member. The valve closure me... | 11/04/1986 |
| 4607737 | Hydraulically operating release arrangement, especially for a vehicle clutch A hydraulically operating clutch release includes a housing having a pressure chamber sealed by a roll membrane. A clutch bearing is axially displaceable in the housing. A support body abuts the roll membrane in the chamber, and resiliently engages the bo... | 08/26/1986 |
| 4573398 | Pressure control device and method of making the same A pressure responsive control device having a pressure housing assembly defining a pressure chamber, an actuable control fixed to the housing assembly and, a pressure transducer module hermetically closing the pressure chamber. The module includes a snap ... | 03/04/1986 |
| 4565501 | Two-stage volumetric pump for liquefied petroleum gases in liquid phase A two-stage pump for LPG having two chambers, a valve communicating with the first chamber for the admission of the liquid to be pumped; a second valve communicating with the second chamber for the delivery of the pumped liquid. A transfer duct connects t... | 01/21/1986 |
| 4524855 | Hydraulic release arrangement, especially for vehicle clutches A hydraulic release arrangement, especially for vehicle clutches, consisting of a housing (1,2,3) with a pressure space (6) sealed by a rolling bellows (7), in which the release bearing (4) is arranged to be displaceable in the housing (1,2,3) in the axia... | 06/25/1985 |
| 4523902 | Diaphragm pump for use in an explosive atmosphere A fluid flow machine has a diaphragm pump which is driven by an electromagnet and is confined in a pressure-resistant capsule together with the electromagnet as well as with the electronic control unit for the electromagnet. The constituents of the capsul... | 06/18/1985 |
| 4508118 | Diaphragm assembly for scuba diving regulator A diaphragm for a scuba diving regulator incorporates a contact member in the form of an axially thin spool cast or fabricated of low friction material. The contact member is installed at a central aperture of the diaphragm so that the end plates or flang... | 04/02/1985 |
| 4506592 | Brake power servo booster A brake power servo booster, in which a fluid pressure difference is generated between opposite sides of a power piston, is provided with a wedge shaped member which is forced by the power piston between the wedge shaped recess of the members of an output... | 03/26/1985 |
| 4458576 | Stroking mechanism A stroking mechanism in accordance with the invention includes a partially buckled, hollow chamber susceptible to further buckling at preselected pressure and a plunger within the chamber. The plunger is at least partly expelled from the chamber upon furt... | 07/10/1984 |
| 4426915 | Fluid-operated servomotor for actuation of clutches or the like A servomotor which actuates the throw-out device of a clutch, particularly in an automotive vehicle, has a piston which is reciprocable in a housing and is adapted to be coupled to a reciprocable motion transmitting rod for the throw-out device by a compe... | 01/24/1984 |
| 4385217 | Flushable manifold for diaphragm protected components A flushable manifold for diaphragm protected components of a pressure transducer for sensing a flow of fluid comprises a housing having a recess therein and a diaphragm of flexible material over and closing the recess. Inlet and outlet passages communicat... | 05/24/1983 |
| 4286539 | Dual buoyancy device A dual buoyancy device having two external dimensions, in the smaller of which, one end is closed by an elastic sheet undistended, and in the greater of which the sheet is distended from its normal position thereby increasing the external dimension of the... | 09/01/1981 |
