Member Includes Coextensive Plate-like Elements Secured To Opposite Side Of Diaphragm Patents (Class 92/100)
  • Patent number: 10371177
    Abstract: A pneumatic controller includes a housing, a piston located in the housing and movable therein and a diaphragm located at the piston to isolate a first chamber of the pneumatic controller from a second chamber of the pneumatic controller. The diaphragm includes a first diaphragm surface, a diaphragm opening extending through the diaphragm, and a fabric reinforcing layer to strengthen the diaphragm. A diaphragm to isolate a first chamber of a pneumatic controller from a second chamber of a pneumatic controller includes a first diaphragm surface, a diaphragm opening extending through the diaphragm, and a fabric reinforcing layer to strengthen the diaphragm.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: August 6, 2019
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Adam Faass, Robert DeFelice
  • Patent number: 9022347
    Abstract: A disc for use in a pneumatic valve includes a stiffening insert encased in a flexible body. The stiffening insert acts to protect a central actuation region of the disc against radial compression, which may arise if the disc is used to seal against a bore hole, and against material flow towards the actuation region away from a clamped periphery. The behavior of the disc in a valve assembly is therefore more predictable and reproducible. The flexible body may further be tensioned across the stiffening insert.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: May 5, 2015
    Assignee: Concept 2 Manufacture Design OCD Ltd
    Inventor: Andrew Tatarek
  • Patent number: 8864102
    Abstract: An actuator for actuating a plunger of a valve is provided. The actuator has an inlet and includes first and second hollow caps. A main actuation assembly is provided between the caps. The main actuation assembly includes a deformable diaphragm; first and second chambers, static sealing elements and a main piston movable between actuated and unactuated positions. A biasing mechanism biases the piston in the unactuated position. When pressurized gas is flown through the inlet and/or drawn from the outlet of the actuator, the first chamber expands, moving the main piston from the unactuated position to the actuated position, an actuating stem connected to the main piston thereby sliding within a channel provided in the bottom cap. Stackable actuating assemblies can also be used between the caps. Using static sealing elements advantageously avoids friction between moving parts.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: October 21, 2014
    Assignee: Mecanique Analytique Inc.
    Inventor: Yves Gamache
  • Patent number: 7922147
    Abstract: A flush valve diaphragm of a flush valve includes a body having a segmented insert within a flexible body portion and a central passageway. The body further includes a peripheral sealing portion with the flexible body portion within the peripheral sealing portion. The peripheral sealing portion can include an integral filter, an exit chamber and a bypass arrangement, such that water flowing through the filter flows through the bypass arrangement. The integral filter version will retard clogging of the bypass arrangement. The segmented insert includes a plurality of trapezoidal members with outward protrusions. The plurality of trapezoidal members are connected to each other on their outermost edge by a runner.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: April 12, 2011
    Assignee: Zurn Industries, LLC
    Inventors: J. Timothy O'Connor, Michael A. Funari
  • Patent number: 7887304
    Abstract: A diaphragm type pressurized pump comprises a hollow cylinder formed on the top surface of each piston acting region of the diaphragm sheet. A piston head pushing chunk is disposed on the diaphragm sheet such that a ladder hole in the piston head pushing chunk receives the hollow cylinder. A fixing screw is driven via the center of the hollow cylinder into the threaded hole on each wobble plate. As a result of driving the fixing screw, the upper portion of the hollow cylinder expands thereby deforming and filling up the space between the bottom surface of the head of the fixing screw and the top surface of the ladder hole of the piston head pushing chunk, and thus preventing water from leaking and seeping into the motor of the pump.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: February 15, 2011
    Inventors: Ying Lin Cai, Chao Fou Hsu
  • Patent number: 7832327
    Abstract: A diaphragm actuator for a fluid process control device comprises a housing, a diaphragm, a stem, and a plate assembly. The plate assembly includes a concave plate and a convex plate, each having inner and outer radial portions. The outer radial portions compressingly engage and retain the diaphragm. The inner radial portions are compressed together onto the stem between a shoulder of the stem and a nut threaded onto the stem. Accordingly, the concave plate forcibly engages and provides a fluid-tight seal directly with the shoulder of the stem without requiring an o-ring or any other additional sealing component. Moreover, the concave and convex plates are structurally equivalent such that the actuator may easily be switched between a biased-open configuration and a biased-closed configuration.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: November 16, 2010
    Assignee: Fisher Controls International LLC
    Inventors: Douglas P. Gethmann, Ross A. Schade, David A. Arnold
  • Publication number: 20100095836
    Abstract: A brake actuator system of a vehicle comprising a diaphragm design with a hole and sealing element in the center. The design allows for the sealing element to seal and slide on the outer diameter of the center pushrod for the exposed length. This eliminates the need for a fixed joint to permanently attach the diaphragm to the center pushrod, and allows for the pushrod to be attached to the spring piston or a separate fixed plate and reduces stress of the diaphragm at its interface.
    Type: Application
    Filed: October 20, 2008
    Publication date: April 22, 2010
    Inventors: Albert D. Fisher, Jess D. Thiel
  • Patent number: 7651324
    Abstract: A diaphragm pump for pumping a fluid includes a diaphragm and a driver. The diaphragm has a first surface and a second surface. The driver includes a support portion and is connected to the diaphragm via the support portion. The driver is reciprocated to deform the diaphragm thereby performing a pumping action. The support portion includes a first supporting surface for supporting the first surface and a second supporting surface for supporting the second surface. The support portion allows the diaphragm to slidingly move along an interval between the first and second supporting surfaces when the diaphragm is deformed.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: January 26, 2010
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Shinya Yamamoto, Makoto Yoshikawa, Takao Mishina, Mamoru Kuwahara
  • Patent number: 6892624
    Abstract: A pump that has a flexible liner located adjacent to a diaphragm. The liner provides structural support for the diaphragm. The flexible liner can slide relative to the diaphragm. This relative movement reduces the stiffness of the diaphragm/liner assembly. The diaphragm/liner assembly is therefore both flexible and strong. Additionally, the liner provides a thermal insulator for the diaphragm. The flexible liner may be constructed from a low friction material to lower the friction between the liner and a wobble plate of the pump. Lowering the friction reduces the heat generated within the pump. The structural reinforcement, thermal insulation and lower friction features of the liner increase the life of the diaphragm and the pump.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: May 17, 2005
    Assignee: Aquatec Water Systems, Inc.
    Inventors: Ivar L. Schoenmeyr, William V. Stucker
  • Publication number: 20040206232
    Abstract: A vacuum unit for producing a stroke movement due to an applied vacuum. The vacuum unit includes a housing, a spring disposed in the housing, a diaphragm and a drive rod arranged on the diaphragm. The drive rod is positioned centrally on the diaphragm and is mounted in a longitudinal guide in the housing.
    Type: Application
    Filed: September 2, 2003
    Publication date: October 21, 2004
    Applicant: Mann & Hummel GmbH
    Inventors: Thomas Jessberger, Heinz Dobusch
  • Publication number: 20040200351
    Abstract: A vehicle braking system vacuum booster tandem power piston connection design such that the primary piston and the secondary piston are positioned together forming the tandem power piston. A connection design that provides direct alignment between the primary piston and secondary piston upon assembly and also provides an airtight seal between the primary piston and the secondary piston when assembling the tandem power piston.
    Type: Application
    Filed: April 8, 2003
    Publication date: October 14, 2004
    Applicant: DELPHI TECHNOLOGIES INC.
    Inventors: Michel J. Vermoesen, Ryan M. Elking, Patrick T. MacLellan, Derek T. Dreischarf
  • Publication number: 20040060435
    Abstract: A hydraulic fastening device, for securement of two components, for example, securement of teeth to a bucket on earthmoving or mining equipment. Each component (29) and (51) has an orifice (50) and (52) therein adapted to be substantially aligned. A body member (26) is inserted in the aligned orifices (50) and (52). A control means (34) is then operated to move at least one protrusion (40) and (41) to protrude from the body (26) and to fasten the components (29) and (51). This achieved by hydraulic operation and connection of a fluid conduit (32) between the control means 34, e.g. a grease nipple, and the protrusions (40) and (41).
    Type: Application
    Filed: February 4, 2003
    Publication date: April 1, 2004
    Inventor: Patrick Gerard Maher
  • Publication number: 20030167917
    Abstract: 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 installation into a pneumatic actuator.
    Type: Application
    Filed: September 19, 2002
    Publication date: September 11, 2003
    Inventors: Larry K. Ball, Betty Kocsis, John N. Tervo
  • Patent number: 6343539
    Abstract: A pump diaphragm comprising a first layer formed from a first material such as synthetic rubber which is adapted to be substantially impervious to both hydrophobic and hydrophilic liquids. In addition to the first layer, the pump diaphragm includes a second layer which is disposed in laminar juxtaposition to the first layer. The second layer is itself formed from a second material such as a thermoplastic elastomer which is adapted to possess a high level of flexibility and resiliency.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: February 5, 2002
    Inventor: Benjamin R. Du
  • Patent number: 6338295
    Abstract: A fuel pump which has excellent heat resistance and salt resistance, is low in cost and light in weight, and which is free from fuel leakage. The fuel pump has a bottom body formed of a thermosetting resin such as bakelite material which has heat resistance and strength, and a top body and a cover formed of a thermoplastic resin. The top body and the cover 16 are assembled with a seal member such as a gasket held between the top body and the cover, and the top body and the bottom body 12 are fixed together by a fixing element. Thereby, the main body portions of the fuel pump are constituted of resin.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: January 15, 2002
    Assignee: Mikuni Adec Corporation
    Inventors: Kenichi Kubota, Norio Takehana, Noriaki Chiba
  • Patent number: 6328021
    Abstract: A diaphragm for an integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: December 11, 2001
    Assignee: Siemens Canada Limited
    Inventors: Paul D. Perry, John E. Cook
  • Patent number: 6257845
    Abstract: An air driven double diaphragm pump including two opposed pump chambers with an air motor having air chambers therebetween. The pump chambers and air chambers form pumping cavities divided by diaphragms. Each pump chamber includes an inlet ball valve and outlet ball valve. An inlet manifold is positioned below the pump chambers and an outlet manifold above. Tie-rods extend both across the pump from one pump chamber to the other with nuts to place the assembly in compression. Tie-rods also extend from the outlet manifold through the pump chambers, to the inlet manifold and to feet mounted therebelow. Two plates, one to either side of the air motor extend to grooves in the inlet and outlet manifold and also extend to grooves in the pump chambers so as to close of the side of the pump structure. With the plates, an outlet manifold is provided from which air may be exhausted remotely. The ball valves include small diametrical clearance and a limitation on lift for added performance.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: July 10, 2001
    Assignee: Wilden Pump & Engineering Co.
    Inventors: Robert F. Jack, Eric L. Forman, James E. Humphries, Gary K. Lent
  • Patent number: 6238132
    Abstract: A brake actuator having an improved push rod and end plate assembly which eliminates the requirement for thread adhesive and avoids deformation of the exterior surface of the push rod. The push rod includes an axial internally threaded bore through one end and the shank portion of the mounting screw includes an unthreaded intermediate portion adjacent the threaded end portion having a plurality of radial lobes which are turned into the internally threaded bore of the push rod securely retaining the end plate to the push rod under vibration loading and extreme temperature conditions. The radial lobes on the intermediate portion of the mounting screw each include an arcuate spiral lead surface and a flat generally radial following surface which requires only a relatively small torque to secure the end plate to the push rod, but a significantly larger torque to unthread the mounting screw from the push rod.
    Type: Grant
    Filed: August 24, 1999
    Date of Patent: May 29, 2001
    Assignee: Indian Head Industries, Inc.
    Inventors: Ronald S. Plantan, Thomas O. Schultz
  • Patent number: 6227520
    Abstract: A diaphragm piston having a diaphragm between a body and plate. A post integral with and extends from the body through the diaphragm and the plate. A stop is coupled to the post and limits the axial movement of the plate away from the body. A spring seat is coupled to the post. A spring is between the plate and the spring seat. The post includes a first shoulder and the stop engages the first shoulder. The stop includes an orifice shaped to move axially on the post past the first shoulder and rotate about the post and engage the first shoulder. The first shoulder has at least one circumferential recess and the orifice in the stop includes a radial tab smaller than the recess. A first lock prevents rotation between the stop and the post. A second lock is also provided preventing rotation between the plate and post. A unique stem which guides the diaphragm piston in a valve seat is provided.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: May 8, 2001
    Assignee: New York Air Brake Corporation
    Inventor: Howard E. Huber, Jr.
  • Patent number: 6196395
    Abstract: An external regeneration mechanism including a housing having two chambers and a displaceable member disposed between said two chambers and at least two passages are defined on said housing. The first passage is communicating with the first chamber and the filter outlet and the second passage is communicating with the second chamber and the filter inlet of same filter. A rod having an external handle is coupled to said displaceable member and is adapted to move by an external source of power said displaceable member linearly back and forth in order to dislodge particles and filter aid material from the external surface of the filter element.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: March 6, 2001
    Inventor: Mordeki Drori
  • Patent number: 6158327
    Abstract: 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 layer of a preselected flexible material. Such diaphragm comprises an outer bead like portion for securing the diaphragm to a pump housing. There is a annular flexure portion having a first end and a second end, such first end and such second end being generally flat and an arcuate shaped middle portion formed contiguously with the first end and the second end. Such first end is formed contiguously with the outer bead like portion. Such annular flexure portion has a substantially uniform first predetermined thickness. An enlarged bulbous portion is formed contiguously with the second end and extends around an inner periphery thereof. Such enlarged bulbous portion has a predetermined configuration.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: December 12, 2000
    Assignee: Westinghouse Air Brake Company
    Inventor: Howard D. Huss
  • Patent number: 6145430
    Abstract: A selectively bonded two-ply diaphragm for a diaphragm pump having adjacent first and second layers of the diaphragm which are selectively bonded at the interface between the layers in at least one attachment portion, which is adapted for attachment to a pump. A working portion is provided in which the first and second layers are free to move relative to one another at the interface. The attachment portion may include a central portion which is adapted for attachment to a diaphragm rod of a pump and a peripheral portion surrounding the central portion which is adapted for stationary attachment to a pump housing. The working portion joins the peripheral portion and the central portion. Selective bonding of the diaphragm is by at least partially bonding or substantially bonding the first and second layers at the interface in the peripheral portion, the central portion, or both.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: November 14, 2000
    Assignee: Ingersoll-Rand Company
    Inventors: Stephen D. Able, Nicholas Kozumplik, Jr.
  • Patent number: 6142749
    Abstract: An air driven double diaphragm pump including two opposed pump chambers with an air motor having air chambers therebetween. The pump chambers and air chambers form pumping cavities divided by diaphragms. Each pump chamber includes an inlet ball valve and outlet ball valve. An inlet manifold is positioned below the pump chambers and an outlet manifold above. Tie-rods extend both across the pump from one pump chamber to the other with nuts to place the assembly in compression. Tie-rods also extend from the outlet manifold through the pump chambers, to the inlet manifold and to feet mounted therebelow. Two plates, one to either side of the air motor extend to grooves in the inlet and outlet manifold and also extend to grooves in the pump chambers so as to close of the side of the pump structure. With the plates, an outlet manifold is provided from which air may be exhausted remotely. The ball valves include small diametrical clearance and a limitation on lift for added performance.
    Type: Grant
    Filed: January 6, 2000
    Date of Patent: November 7, 2000
    Assignee: Wilden Pump & Engineering Co.
    Inventors: Robert F. Jack, Eric L. Forman, James E. Humphries, Gary K. Lent
  • Patent number: 6071090
    Abstract: A diaphragm-type double-acting process pump has a reduced number of members to be assembled to a center plate and also a reduced number of hermetically sealed portions. A space defined by the center plate, together with a side cover and a side body, which are provided on both sides, respectively, of the center plate, is divided by two diaphragms into left and right driving chambers inside the diaphragms and left and right pump chambers outside the diaphragms. The left and right pump chambers are communicated with a suction opening through check valves and also communicated with a discharge opening through check valves. The center plate is fitted in a recess formed in the side body, and the side cover is brought into contact with both the side body and the center plate to clamp the center plate by the side cover and the side body.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: June 6, 2000
    Assignee: SMC Corporation
    Inventors: Hiroyuki Miki, Tsuyoshi Kagami, Yoshihiro Shono
  • Patent number: 6004105
    Abstract: A fluid powered diaphragm pump with an adjustable stroke is provided. The stroke of the pump is adjusted by providing an inner diaphragm plate assembly that includes a retractable piston. The piston is biased towards the inner plate by one or more standoffs that attach the piston to the plate. The bias of the piston is overcome by pressurized fluid that is communicated to a chamber defined by the piston and the inner plate. The fluid may be communicated to the chamber through the diaphragm rod. The inner diaphragm plate assemblies of both diaphragm chambers may be connected to different pressurized fluid supplies there enabling the stroke or capacity of the two diaphragm chambers to be controlled independently. As a result, the stroke or capacity of the two diaphragm chambers may differ.
    Type: Grant
    Filed: February 23, 1998
    Date of Patent: December 21, 1999
    Assignee: Warren Rupp, Inc.
    Inventor: Steven M. Reynolds
  • Patent number: 5996470
    Abstract: A combination pump diaphragm and outer piston arrangement used in certain pump applications in which at least a portion of such diaphragm is in contact with an outer piston which would tend to abrade the diaphragm. The combination comprises a diaphragm member which includes a generally flat portion, a generally flexure annular portion and an enlarged bead like wear ring portion disposed intermediate such generally flat portion and such generally flexure annular portion. Such bead like wear ring portion has a first predetermined diameter and a predetermined configuration. The outer periphery of such diaphragm member is secured to a pump housing. An outer piston member is disposed for securing such diaphragm member to a piston rod of a pump. Such outer piston member includes a generally flat portion contacting such generally flat portion of such diaphragm member and an arcuate portion contacting such enlarged bead like wear ring portion.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: December 7, 1999
    Assignee: Westinghouse Air Brake Company
    Inventors: Eldon S. Eady, Larry J. Stephenson
  • Patent number: 5899671
    Abstract: For a hydraulically driven diaphragm pump with a diaphragm consisting of at least two individual layers, these layers are clamped at least in their central area between a coupling part on the feed area side and the hydraulics area side and are thus mechanically linked with one another. The coupling parts are also connected with a relay valve of a leak replenishment system which is attached in the pump body in a moveable manner.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: May 4, 1999
    Assignee: Lewa Herbert Ott GmbH & Co.
    Inventor: Waldemar Horn
  • Patent number: 5894784
    Abstract: A backup washer for clamping a diaphragm having a flexible washer disposed next to a rigid washer, the flexible washer including a material less stiff than a material of the rigid washer. The flexible washer may include an elastomer material such as rubber. A flexible washer having a varied stiffness profile may also be provided to the face by incorporating materials having different stiffnesses, contouring, or both. The rigid washer may include a metal, plastic, composite materials, or combinations of these and may also be bowed or ribbed. The flexible washer and rigid washer of the backup washer may mechanically fastened, bonded, or molded together. A diaphragm pump having a diaphragm which is clamped by at least one backup washer having a flexible washer which includes a material less stiff than the material of the diaphragm and a rigid washer next to the flexible washer which includes a material more stiff than the diaphragm material.
    Type: Grant
    Filed: August 10, 1998
    Date of Patent: April 20, 1999
    Assignee: Ingersoll-Rand Company
    Inventors: John T. Bobbitt, III, Duane C. Johnson, Stephen D. Able
  • Patent number: 5810567
    Abstract: On a hydraulic diaphragm pump with a diaphragm including at least two individual layers, a dimensionally stable reinforcing element that moves together with the diaphragm and is kept in contact with the diaphragm is provided in the central area of the diaphragm. The inlet and outlet channels of the diaphragm pump open into the delivery chamber radially within the reinforcing element at least for the most part so the channels are covered accordingly by the reinforcing element.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: September 22, 1998
    Assignee: LEWA Herbert Ott GmbH & Co.
    Inventor: Waldemar Horn
  • Patent number: 5743169
    Abstract: 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 directed inner flange on an inner peripheral wall defining a resin charging space, and the second center disk member comprises a resin-molded body, formed by charging a resin, and has an outwardly directed outer flange. A portion of the diaphragm is clamped between the inner flange and the outer flange.
    Type: Grant
    Filed: August 29, 1995
    Date of Patent: April 28, 1998
    Assignee: Yamada T.S. Co., Ltd.
    Inventor: Kazumasa Yamada
  • Patent number: 5724881
    Abstract: A two-piece diaphragm assembly for a fluid powered diaphragm pump is provided. The diaphragm assembly includes a key as part of a overlay diaphragm extending towards a recess in a backup diaphragm, for properly aligning the overlay diaphragm and the backup diaphragm during installation of the diaphragm assembly. The diaphragm assembly also provides an improved mechanism for attaching the inner plate of the diaphragm assembly to the outer plate of the diaphragm assembly. A method of installing a two-piece diaphragm assembly onto a fluid powered diaphragm pump is also provided.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: March 10, 1998
    Assignee: Warren Rupp, Inc.
    Inventor: Steven M. Reynolds
  • Patent number: 5707219
    Abstract: A diaphragm pump is provided having a plurality of piston inlets connecting a hydraulic fluid source with the piston chamber and a plurality of check valves each having a ball and valve seat disposed within the inlets. The valve seat includes a conical section sloped such that the tangential contact point between the ball and valve seat is located at a position outward from the inner edge of the valve seat. The distance the ball is permitted to move between the open and closed positions is such that the check valve closes substantially in conjunction with the piston beginning its power stroke and the ball is not able to generate a high closure velocity. A diaphragm plunger includes a spherical surface portion designed to impact a diaphragm stop at a position away from the edges of the stop and plunger. An isolation reservoir is connected to a piston reciprocating chamber such that hydraulic fluid completely fills the piston reciprocating chamber and further flows into the isolation reservoir.
    Type: Grant
    Filed: October 4, 1995
    Date of Patent: January 13, 1998
    Assignee: Wanner Engineering
    Inventor: Frederick Allan Powers
  • Patent number: 5690017
    Abstract: A diaphragm pump 1 has a reciprocating piston 2 operated with the aid of a connecting rod 5 and by this means moves an attached diaphragm 4 fixed in the pump housing 3. The connecting rod 5, in turn, is acted upon and driven at the end facing away from the reciprocating piston 2 by an eccentric 6 or a cranked portion of the drive shaft 11. The rotating masses and at least part of the oscillating masses of the pump are balanced by at least one fixedly mounted counterweight 7 moving in synchronism therewith. For the automatic correction of varying out-of-balance conditions due to variable gas forces or medium forces, a self-regulating system of rolling elements 12 is provided in an annular, empty cavity 9 that is arranged concentrically to the axis of shaft rotation and is situated within a co-rotating housing 10.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: November 25, 1997
    Assignee: KNF Neuberger GmbH
    Inventor: Heinz Riedlinger
  • Patent number: 5649813
    Abstract: Insulation is provided in the form of wall insulation, piston or diaphragm insulation and/or piston rod and/or diaphragm washer insulation to increase the temperature in the working air chamber of an air motor of the piston or diaphragm type to reduce the formation of ice on exhaust.
    Type: Grant
    Filed: August 7, 1996
    Date of Patent: July 22, 1997
    Assignee: Ingersoll-Rand Company
    Inventors: Stephen D. Able, Douglas D. Purdy, Nicholas Kozumplik, Jr.
  • Patent number: 5649809
    Abstract: The invention relates to a double diaphragm pump having flexible diaphragms disposed in displacement spaces and connected and mechanically coupled to piston rods, the displacement spaces being communicated via check valves to a suction manifold on the one hand and to a pressure manifold on the other hand, wherein each diaphragm is connected to a piston rod, which piston rods extend coaxially and are mounted on opposite sides to a guide frame having at least one lineal guide for a guide block which rotatably mounts a crank pin of a crankshaft.
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: July 22, 1997
    Assignee: Abel GmbH & Co. Handels-und Verwaltungsgesllschaft
    Inventor: Volker Stapelfeldt
  • Patent number: 5626464
    Abstract: The present invention is a wobble plate pump typically used in a reverse osmosis water purification system. The pump has a piston that is coupled to a wobble plate by a rocker arm. The piston has a stem which snaps into a corresponding sleeve of a diaphragm. The diaphragm is attached to the rocker arm and extends across the inner diameter of the pump to provide an inner pump seal. The piston stem and diaphragm sleeve extend through an access opening in a diaphragm support plate. The access opening of the wobble plate has an inner lip defined by a first relatively small radius near the center of the pump and a second relatively larger radius at the outer portion of the pump. The dual radiuses allow the piston to symmetrically reciprocate about a surface of the diaphragm support plate without inducing excessive stresses in the diaphragm. The symmetrical reciprocating motion maximizes the compression ratio of the pump.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: May 6, 1997
    Assignee: Aquatec Water Systems, Inc.
    Inventors: Ivar L. Schoenmeyr, Dave M. Slagle
  • Patent number: 5615643
    Abstract: A pump comprising a pumping chamber (3) for pumping a liquid; at least part of the pumping chamber (3) being formed by a pumping means (6) having a pumping area (A2); an actuation chamber (2) in communication with a source of pressurised fluid, at least part of the, actuation chamber (2) being formed by an actuation means (5) having an actuation area (A1); a connection means (7) connecting the actuation means and the pumping means, so that, at least during those times that liquid is required to be pumped by the pump, variations of the pressure in the actuation chamber effect movement of the actuation means which in-turn effects movement of the pumping means to enable supply of liquid to the pumping chamber and delivery of liquid therefrom; wherein the pressure within the pumping chamber is greater than the pressure within the actuation chamber.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: April 1, 1997
    Assignee: Orbital Engine Company (Australia) Pty. Limited
    Inventor: Raymond J. Hill
  • Patent number: 5566805
    Abstract: A vacuum operated speed range shifting mechanism for use in a drivetrain subassembly having input and output shafts, each being rotatably mounted within a support structure. The shifting mechanism comprises an annular shift sleeve surrounding and splined to the output shaft for rotation therewith, with the sleeve being axially moveable between first and second axial positions corresponding to low and high speed modes of operation of the drivetrain subassembly. The mechanism further includes a stationary annular housing disposed coaxially about the shift sleeve within the support structure. The housing is axially restrained by the support structure and defines an interior chamber. A flexible annular diaphragm is attached to the housing and disposed within the housing so as to divide the interior chamber into first and second annular cavities which are substantially hermetically sealed. A shift collar assembly is attached to the diaphragm and is disposed in surrounding relationship with the shift sleeve.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: October 22, 1996
    Assignee: Dana Corporation
    Inventor: Randy L. Sommer
  • Patent number: 5507217
    Abstract: A diaphragm for spring brake actuators includes an aperture that receives a threaded securement member such that the diaphragm is directly fixed to a push rod. In this way, misalignment between the push rod and the diaphragm is eliminated. To overcome any leakage through the aperture the diaphragm is formed with sealing beads compressed by the securement member to achieve a seal. Preferably, diaphragm plates are received on each side of the diaphragm, and the sealing beads are compressed by the securement member to achieve a seal between the securement member and the diaphragm plates. An adequate seal is thus achieved, while still allowing the direct connection of the diaphragm to the push rod by a threaded connecting member. The diaphragm plate on the power spring side of the diaphragm extends upwardly into a recess in the power spring plate, and is in facial contact in an axial direction with a surface of the power spring plate when the spring is actuated.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: April 16, 1996
    Assignee: Indian Head Industries, Inc.
    Inventor: Ronald S. Plantan
  • Patent number: 5437219
    Abstract: A multi-thickness diaphragm member including clamping sections that are sized for assembly of the diaphragm in standard air brake valve devices and a flexure portion intermediate the clamping sections that forms a convolution during assembly. The thickness of the flexure portion is less than that of the clamping sections to facilitate formation of the diaphragm convolution without wrinkling, in order to alleviate progressive fatigue failure. The thin flexure portion of the diaphragm is joined with the respective clamping sections through a tapered area, which lies entirely outside of the annular space in which the diaphragm convolution forms during assembly, to thereby maximize the radius of curvature of the convolution for optimum utilization of the flexure portion in forming the convolution.
    Type: Grant
    Filed: November 3, 1993
    Date of Patent: August 1, 1995
    Assignee: Westinghouse Air Brake Company
    Inventors: Daniel G. Scott, William K. Mong, Willard P. Spalding
  • Patent number: 5291822
    Abstract: 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 of a main housing body having a groove for receiving a rib or the outer periphery of the diaphragm and a secondary housing to clamp the periphery. The central portion of the diaphragm carries a top plate with a bottom groove to receive a rib on the central periphery of the diaphragm and a bottom disc to clamp the inner periphery. Diaphragms are made with a fabric sandwiched between flexible layers of material. This results in a flash edge which may cause wicking and prevents a proper seal in the grooves receiving the ribs. An angled trim on the peripheries allows a proper filling of the grooves and a leak proof seal.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: March 8, 1994
    Assignee: Orbital Walbro Corporation
    Inventors: Daniel E. Alsobrooks, Steven P. Finkbeiner, Daryl O. Codling
  • Patent number: 5263398
    Abstract: An improvement of a reaction transmitting mechanism for a booster is disclosed. A forward end face of a tubular portion of a valve body which abuts against a reaction disc is provided with an uneven surface. This presents a resistance to an elastic deformation of the reaction disc when a brake booster is actuated. Accordingly, an enhanced hysteresis, which represents a difference in the output between when depressing and releasing a brake pedal, is provided without increasing the hardness of the reaction disc.
    Type: Grant
    Filed: May 20, 1992
    Date of Patent: November 23, 1993
    Assignee: Jidosha Kiki Co., Ltd.
    Inventors: Kazuo Kobayashi, Makoto Watanabe
  • Patent number: 5074757
    Abstract: In a diaphragm pump with mechanically driven diaphragm and a device for diaphragm rutpure signaling, wherein the diaphragm 2 is clamped at the edge between a pump body 3 and pump cover 4 and is centrally firmly connected with a support plate 5 serving to drive the diaphragm, the design is such that the diaphragm is formed as a multi-layer sandwich diaphragm 2, whose individual layers or diaphragm plies are clamped jointly in the edge region between pump body 3 and pump cover 4. The sandwich diaphragm 2 consists of a working diaphragm 18 with at least one diaphragm ply and a protective diaphragm 20 also with at least one diaphragm ply. The latter is formed so that, with the working diaphragm 18 intact, it is clearly stressed by the delivery pressure less than the working diaphragm 18. Lastly the device for diaphragm rupture signaling has at least one channel 22, 25 disposed between the diaphragms 18, 20 and brought to the outside, for signaling a rupture of the working diaphragm 18.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: December 24, 1991
    Assignee: LEWA Herbert Ott GmbH & Co.
    Inventor: Waldemar Horn
  • Patent number: 5062770
    Abstract: A fluid pumping apparatus and system including a double acting diaphragm pumping device in which each pumping component has a pair of spaced apart diaphragms defining a containment chamber and all exposed surfaces in the pumping chamber and the containment chamber are made of an inert plastic material, a fluid sensor extending into each containment chamber for sensing the presence of unwanted fluids therein, and a pump control system for activating the pumping apparatus and responding to an output signal generated by either sensor to deactivate the pumping apparatus in the event of leakage of fluid into either containment chamber.
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: November 5, 1991
    Assignee: Systems Chemistry, Inc.
    Inventors: Carl E. Story, Jerry A. Nichols, Byron C. Cady
  • Patent number: 5031404
    Abstract: The invention provides a brake booster including in a preferred embodiment a housing, first and second annular flexible diaphragms spaced from one another forming a sealed second chamber within the housing and a sealed first chamber between the first diaphragm and the first end of the housing, a generally annular shaped power piston for connection with the master cylinder piston, a chamber valve seat separating the first and second chambers, an inlet valve slidably mounted within the power piston, and a control valve spring biased away from the power piston and connected with the pedal linkage and being slidably and sealably mounted within first end of the housing.
    Type: Grant
    Filed: September 27, 1989
    Date of Patent: July 16, 1991
    Assignee: General Motors Corporation
    Inventors: Donald M. Flory, Craig A. Osterday, Edward J. DeHoff, Donald E. Schenk, Jon E. Miller
  • Patent number: 4960038
    Abstract: A diaphragm device utilized, for example, in a vacuum advance mechanism of a distributor of an internal combustion engine is disclosed. The diaphragm device comprises: a housing consisting of two cup-shaped members coupled to each other at the marginal flanges thereof; a diaphragm extending in the housing to define an airtight chamber therein; and a control rod coupled to the diaphragm to transmit the motion thereof. The outer marginal portion of the diaphragm is clamped between the flanges of the two cup-shaped housing members, wherein the distance between the radially extending flanges clamping the diaphragm therebetween is strictly controlled by a distance regulator, which may be constituted by a step formed in the outer portion of one of the flanges toward the other flange, the outer marginal portion of the diaphragm being received in the stepped-down inner portion of the stepped flange.
    Type: Grant
    Filed: November 2, 1988
    Date of Patent: October 2, 1990
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masaaki Chiba, Hideki Maruhashi
  • Patent number: 4915018
    Abstract: A diaphragm piston assembly in which an annular ring member is provided, preferably at the outer clamping periphery of the diaphragm between the underside of the diaphragm and body, to exert a force on the diaphragm in the direction of the cover that clamps the diaphragm to the body, thereby encouraging the diaphragm convolution to assume a disposition in a preferred direction corresponding to the direction in which the convolution is predisposed by the inherent "spring effect" of the diaphragm.
    Type: Grant
    Filed: September 13, 1988
    Date of Patent: April 10, 1990
    Assignee: American Standard Inc.
    Inventors: Daniel G. Scott, Theodore B. Hill
  • Patent number: 4904167
    Abstract: Pumps for nonlubricating fluid can use membranes for the separation of different fluids. Suitable membranes can be used for pressures up to several thousand atmospheres in the fluids. Such membranes are, however, subjected to difficult problems like stresses in the material of the membrane, compression of the material of the membrane and the like. These problems prevented long life of the membranes or it restricted the membranes to such short strokes that the deliveries of the pumps were small at a given size and weight. The present invention improves the life time and the delivery capacities of membranes by creating most suitable configurations of the membranes and of the adjacent parts. Pumps or compressors for relative big delivery quantities, and also for high pressures up to several thousand atmospheres in cases of pumps, are thereby obtained.
    Type: Grant
    Filed: January 22, 1988
    Date of Patent: February 27, 1990
    Inventor: Karl Eickmann
  • Patent number: 4887516
    Abstract: A diaphragm clamping arrangement for assembly of a diaphragm-type piston in the body of a valve device or the like such that the diaphragm is biased in a direction to cause the diaphragm convolution to assume a preferred disposition in which a desired diaphragm "spring effect" is maintained.
    Type: Grant
    Filed: September 13, 1988
    Date of Patent: December 19, 1989
    Assignee: American Standard Inc.
    Inventors: Daniel G. Scott, Theodore B. Hill
  • Patent number: 4830232
    Abstract: 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 fluid flow section. A piston is slidingly positioned in the piston section and a flow restrictor is slidingly positioned in the fluid flow section, with a spring in the fluid flow section urging the restrictor into engagement with the diaphragm for moving the piston to the out position. A fluid inlet and a fluid outlet are provided in the fluid flow section so that an inward movement of the piston dispenses fluid and an outward or return motion of the piston draws a new charge of fluid into the valve.
    Type: Grant
    Filed: August 11, 1987
    Date of Patent: May 16, 1989
    Assignee: Bobrick Washroom Equipment, Inc.
    Inventors: Robert Greenberg, Emmanuel A. Hanna