Class 92/103F - With reinforcement embedded in diaphragm

Subclass of Class 92 - Expansible chamber devices
No. of patents: 60
Last issue date: 04/29/2008

Number	Title	Issue Date
7363850	Diaphragm pump The invention relates to a diaphragm pump (1) including a working diaphragm (3) that, during pumping movements, oscillates between a bottom dead center and a top dead center. The working diaphragm (3) delimits a pump chamber (7) between i...	04/29/2008
6976668	Roll diaphragm control valve The present invention provides an improved diaphragm control valve with a simplified construction that has significant advantages over prior art diaphragm control valves. Further, the present invention provides substantially straight-through fluid flow which enables...	12/20/2005
6923108	Composite diaphragm for diaphragm pumps A composite diaphragm for diaphragm pumps comprises an elastomer body and a polytetrafluoroethylene (PTFE) coating on its back side. The elastomer body has a shape of a circular dish that has an edge region with a clamping area, a bottom and a flexible section of th...	08/02/2005
6877419	Composite diaphragm for diaphragm pumps A composite diaphragm for diaphragm pumps comprises an elastomer body and a polytetrafluoroethylene (PFTE) coating on its back side. The elastomer body has a shape of a circular dish that has an edge region with a clamping area, a bottom and a flexible section of th...	04/12/2005
6837263	Liquid level control system A liquid level control system including a tank; a source of liquid in communication with the tank; a pressure fluid actuated valve for controlling the flow of liquid to the tank from the source; a pressure sensor disposed in the tank to monitor the hydrostatic press...	01/04/2005
6722262	Pneumatic actuator with a nested diaphragm assembly A diaphragm assembly for use in pneumatic actuators uses two or more diaphragms, one nested inside of the other. Each of the diaphragms, when shaped, includes a fabric pattern. The fabric patterns on each of the diaphragms are aligned one with another upon installat...	04/20/2004
6685164	Control valve and diaphragm for use in the control valve The control valve according to the present invention has a high durability, so that the valve is not easily damaged even in case that the valve is provided in a corrosion gas current path. The valve has a construction such that a diaphragm (4) is containe...	02/03/2004
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
6523454	Device for monitoring the integrity of a diaphragm A device for monitoring the integrity of a diaphragm (1) of a diaphragm transport+ unit, made of one or a plurality of layers, having a resistance device (3) connected to one layer and having a measuring device interconnected to a current source (15) via ...	02/25/2003
6205907	Method of making fiber reinforced elastomeric diaphragms and fiber reinforced diaphragms A method of making an elastomeric diaphragm includes preparing a mixture of an elastomer containing dispersed fibers; heating the mixture so that the mixture flows under pressure; injecting the mixture into a mold having a cavity in the configuration of a...	03/27/2001
6189435	Diaphragm A diaphragm for a turbo charger actuator includes a layer of fabric having upper and lower surfaces. A first layer of elastomeric material coats at least a portion of the upper surface of the fabric to prevent pressurized air from passing through. A secon...	02/20/2001
6158327	Extended wear pump diaphragm The present invention provides a diaphragm for use in pump applications in which at least a predetermined portion of such diaphragm is in contact with such outer piston which would tend to abrade such diaphragm. Such diaphragm is formed from at least one ...	12/12/2000
6142062	Diaphragm with modified insert The present invention provides a diaphragm member for use in certain valve assemblies. Such diaphragm member comprises a generally circular diaphragm having a first predetermined diameter and having a first surface and a second surface. Such generally cir...	11/07/2000
6080685	Abrasion resistant plastic bonded to a diaphragm An improved diaphragm substantially resistant to abrasive wear for use in certain applications in which at least a portion of such diaphragm is in contact with another surface which would tend to abrade such diaphragm, such diaphragm comprising at least o...	06/27/2000
6047953	Diaphragm compression restrainer A universal diaphragm made of elastomeric material having rigid solid compression restrainers incorporated within the diaphragm for preventing overcompression of the diaphragm during the assembly of a diaphragm valve. The compression restrainers can be de...	04/11/2000
5950523	Composite diaphragm having two layers wherein the first layer is chemically resistant and of reduced thickness in the area of flex of the body A composite flexible diaphragm for a diaphragm pump. The diaphragm has a diaphragm body with an outer perimeter, a center axis, and first and second exterior surfaces. The body has a perimeter flange portion extending around the body adjacent the outer pe...	09/14/1999
5907992	Abrasion resistant diaphragm The present invention provides an improved diaphragm which will substantially resist detrimental abrasive wear. Such diaphragm being used in certain applications in which at least a portion of such diaphragm moves relative to and is in contact with a nonf...	06/01/1999
5762315	Valve actuator with pliable pressure conversion device An actuator for fluid control valves with a reversible power module having a stationary inner member and a coaxially aligned movable outer member coupled to the valve flow control element and slidably movable on the inner member. A chamber formed between ...	06/09/1998
5743170	Diaphragm mechanism for an air driven diaphragm pump A flexible diaphragm for an air driven diaphragm pump having a circular configuration with an inner attachment portion, an outer attachment portion and an annular flexure portion bounded by transition portions to the inner and outer attachment portions. T...	04/28/1998
5743169	Diaphragm assembly and method of manufacturing same A diaphragm assembly has a center disk in which use of a metal member is not required. The center disk comprises first and second center disk members, made of resin, embracing a resin diaphragm between them. The first center disk member has an inwardly di...	04/28/1998
5687633	Insert type member for use in a flexible type pump diaphragm An insert member for use in a flexible diaphragm portion of a pump which enables such flexible diaphragm portion of such pump to be provided with a substantially uniform non-obtrusive surface area that will be positioned in such pump for intimate contact ...	11/18/1997
5673607	Rolling head diaphragm A rolling head diaphragm and dome-shaped piston configuration where the geometry of the diaphragm and piston, and the length of stroke, are modified to enable the commonly known rolling wall action of rolling wall diaphragms to be extended into the center...	10/07/1997
5634391	Inert plastic coated flexible type diaphragm for application in a sanitary type pump Inert plastic coated flexible diaphragm for sanitary pump applications includes a first body portion, disposed in center of diaphragm, which is relatively thick and exhibits a first degree of flexibility. A second body portion is formed contiguously with ...	06/03/1997
5490659	Reinforced diaphragm for flush valves A diaphragm for flush valves has a plurality of concentric reinforcing rings spaced closer together at the smaller diameters of the diaphragm than at the larger diameters. The reinforcing rings have a geometrically progressive spacing from the inside to t...	02/13/1996
5349896	Pump diaphragm A flexible pump diaphragm for pumping fluids is described in which the diaphragm has a number of ribs or troughs located radially across its circumferential flexure portion....	09/27/1994
5335584	Improved diaphragm The diaphragm has an outer flange and an inner portion which is deflectable relative thereto, with the inner portion having a lone, primary annular corrugation connecting a center of the inner portion to the outer flange and which, when viewed in cross se...	08/09/1994
5291822	Diaphragm for pressure regulators and method of making A method of making and the product of the method in a diaphragm for use in a pressure regulator, or other similar uses, where leakage around the confined edges of the diaphragm must be avoided. The structure confining the edges of the diaphragm consists o...	03/08/1994
5262092	Synthetic composite fuel metering membrane A synthetic composite flexible diaphragm of a fabric of warp-knitted polyester fibers and an elastomeric polymer coating applied only to one side of the fabric and disposed in interstices between the fibers to provide when cured a barrier at least substan...	11/16/1993
5220863	Conical diaphragm and method of making A fabric reinforced molded conical diaphragm and method of making in which the parting line of the diaphragm mold is arranged such that the flashing and reinforcing fabric of the molded diaphragm are on the sidewall of the outer clamping bead at a locatio...	06/22/1993
5217797	Chemically resistant diaphragm A composite diaphragm containing a flexible composite of a flexible polymer and an expanded polytetrafluoroethylene fabric on which is adhered to one surface a solid polytetrafluoroethylene layer. Additionally a composite diaphragm is disclosed which has ...	06/08/1993
5138936	Unlimited amplitude rolling piston A rolling piston comprises a substantially cylindrical piston slidably supported within a chamber. One end of the chamber is sealed by a first sealing cap including a circular base portion having a fluid inlet therethrough and opposite ends of a substanti...	08/18/1992
5074196	Flexible gas impermeable sandwich diaphragm The present invention provides a compliant molded diaphragm which includes an operable surface area for forming a flexiblle barrier to prevent fluid flow between opposing sides of the diaphragm. The diaphragm is formed as a sandwich structure having first...	12/24/1991
5052276	Diaphragm construction An improved diaphragm, which operates and has the structure of a short-thick beam, is comprised of a plug having a channel, a tire cord reinforcement is bonded to the plug, an elastomer cured to the reinforcement means, and a sleeve bonded to the elastome...	10/01/1991
4989497	Flexible diaphragm-extreme temperature usage A diaphragm (10) suitable for extreme temperature usage, such as encountered in critical aerospace applications, is fabricated by a unique method, and of a unique combination of materials, which include multi-layered lay-ups of diaphragm materials (20a, 2...	02/05/1991
4951554	Low stress diaphragm A diaphragm for a diaphragm-type piston characterized by an S-shaped or ogee-like profile approximating a theoretical model that is substantially free of distortion in a selected position of the piston assembly in which a convolution is formed in the annu...	08/28/1990
4915017	Diaphragm and a diaphragm-actuated fluid-transfer control device A diaphragm for a diaphragm-actuated fluid-transfer control device, which comprises a flexible, substantially non-stretchable diaphragm body of a substantially circular outline surrounded and delimited by a beaded rim, the body having a substantially dish...	04/10/1990
4841845	Hydraulic or pneumatic drive device The device comprises on the one hand at least one substantially tightly-sealable chamber, which is bounded partly at least by a wall from an approximately resiliently distortable material, and on the other hand flexible, approximately unstretchable spiral...	06/27/1989
4817913	Flushometer relief valve This invention relates to a flexible diaphragm assembly for use in a flush valve having a hollow body, an inlet, an outlet, a valve seat formed in the body between the inlet and outlet, and an operating handle assembly. The diaphragm assembly includes a d...	04/04/1989
4779459	Gas meter including a synthetic membrane A gas meter includes a housing made of thermoplastic material having an inside wall defining two measuring chambers and a deformable membrane disposed between the two measuring chambers. The deformable membrane is formed from a film of thermoplastic elast...	10/25/1988
4755111	Pumping device, particularly suitable for compressing fluids on deep sea-bottoms Hydraulic-exchange pumping device comprising two containers or tanks, inside each of which there are defined: a chamber for the product to be pumped, which is respectively connected, through a delivery valve and a suction valve, to the lines of delivery a...	07/05/1988

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Class 92/103F - With reinforcement embedded in diaphragm