Flexible Indicator Patents (Class 116/270)
  • Patent number: 10774869
    Abstract: A cap for forming a sealed cavity around an end of a fastener protruding from a structure. The cap has: a cap body with an annular base terminating at a rim which surrounds an opening into a central cavity; an annular skirt providing an annular pocket between the skirt and the base; and an inlet hole in the skirt. The inlet hole is in fluid communication with the pocket and arranged to interconnect with a sealing material injection device to provide a flow of sealing material through the skirt via the inlet hole into the pocket. An outlet is also provided in the skirt. The outlet is in fluid communication with the pocket and arranged to enable air to escape the pocket through the skirt via the outlet hole as the sealing material flows from the inlet hole into the pocket.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: September 15, 2020
    Assignee: AIRBUS OPERATIONS LIMITED
    Inventor: Richard Dobbin
  • Patent number: 10420906
    Abstract: An airway management device is provided that may adjust the inflation level of a cuff associated with an endotracheal tube. The cuff inflation may be adjusted in response to an increase in carbon dioxide levels above the cuff, which may indicate a poor seal of the cuff against the tracheal walls, as well in response to a measured intracuff pressure. By using information about the seal quality of the cuff together with information about the cuff pressure, the inflation of the cuff can be adjusted to minimize cuff inflation pressure while maintaining a high quality tracheal seal.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: September 24, 2019
    Assignee: Coviden LP
    Inventor: Joel C. Colburn
  • Patent number: 10415623
    Abstract: A cap for forming a sealed cavity around an end of a fastener protruding from a structure. The cap has: a cap body with an annular base terminating at a rim which surrounds an opening into a central cavity; an annular skirt providing an annular pocket between the skirt and the base; and an inlet hole in the skirt. The inlet hole is in fluid communication with the pocket and arranged to interconnect with a sealing material injection device to provide a flow of sealing material through the skirt via the inlet hole into the pocket. An outlet is also provided in the skirt. The outlet is in fluid communication with the pocket and arranged to enable air to escape the pocket through the skirt via the outlet hole as the sealing material flows from the inlet hole into the pocket.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: September 17, 2019
    Assignee: AIRBUS OPERATIONS LIMITED
    Inventor: Richard Dobbin
  • Patent number: 10406277
    Abstract: A rectal drainage appliance is disclosed comprising a tubular element having an inflatable balloon at a distal end for anchoring the appliance in the rectum. The appliance includes one or more of: (i) first and second auxiliary lumens communicating with the inflatable balloon to provide independent inflation and pressure monitoring paths coupled to the balloon; (ii) a pressure state indicator defined by a mechanical element configured to flip between first and second states or shapes responsive to sensed pressure; and (iii) a collapsible auxiliary lumen larger than the inflation lumen, and configured to permit admission of irrigation fluid. The pressure state indicator may also be used in intestinal drains.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: September 10, 2019
    Assignee: ConvaTec Technologies Inc.
    Inventor: Christopher Gregory
  • Patent number: 10385907
    Abstract: A cap for forming a sealed cavity around an end of a fastener is disclosed having a cap body with an annular base terminating at an inner cap rim which surrounds an opening into a central cavity and lies in an inner cap plane around a majority of a circumference of the annular base. A skirt provides an annular pocket between the skirt and the annular base. The skirt has a first part which is integrally formed with the cap body from a first material and terminates at an edge, and a second part which is formed from a second material and extends from the edge of the first part of the skirt to a skirt rim which lies in or below the inner cap plane around a majority of a circumference of the skirt.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: August 20, 2019
    Assignee: AIRBUS OPERATIONS LIMITED
    Inventor: Richard Dobbin
  • Patent number: 9695787
    Abstract: A sealing arrangement for a post for an intake manifold having a first portion and a second portion held together is set forth. Each of the portions extends from a shell half that, when the two shells are attached to one another, form the intake manifold. Each of the portions includes a face. A groove is formed on at least one of the portions. A seal is fitted in the groove. A fastener hole is formed in the portions. In one portion, the fastener hole passes through the portion and in the other a thread is formed by a thread forming fastener. The seal may be positioned in a groove formed on a post face, in a groove formed adjacent the opening of the fastener-receiving hole in the post, or in a groove formed on an interior wall of the post adjacent a cap fitted over the head of the thread forming fastener.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: July 4, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Chris William Newman, Katherine Jane Randall, David Born
  • Patent number: 9435302
    Abstract: A fuel system component may include a body arranged for use in storing or moving fuel within the fuel system, and an indicator associated with the body to provide an indication when the body is subjected to a condition outside of a threshold. The indicator may be responsive to one or more environmental or system conditions outside of a threshold. For example without limitation, the indicator may be responsive to one or more of temperature, pressure, corrosion and electrical conditions to provide an indication when at least one condition exceeds a threshold for that condition.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: September 6, 2016
    Assignee: TI GROUP AUTOMOTIVE SYSTEMS, L.L.C.
    Inventors: Lynwood F. Crary, Alastair R. Deane, John R. Forgue
  • Patent number: 9416811
    Abstract: The description provides a method of forming a seal around an end of a fastener protruding from a structure. The cap includes a cap body with a cavity; a sealing material inlet comprising an opening in the cap body; three or more ridges protruding from the cap body into the cavity; and three or more channels between the ridges. The method includes: installing the cap body over the end of the fastener so that it is enclosed within the cavity and contacted by the ridges; injecting sealing material into the cavity via the sealing material inlet so that the sealing material flows along the channels, fills the cavity, contacts the end of the fastener, and contacts the structure; and curing the sealing material to form the seal.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: August 16, 2016
    Assignee: AIRBUS OPERATIONS LIMITED
    Inventor: Richard Dobbin
  • Patent number: 9340324
    Abstract: Sealable plastic bag with a vacuum indicator is comprised of first and second sheets, each formed of a thin flexible plastic membrane. At least one perforation is formed in the first sheet. An indicator is disposed on the first sheet over the at least one perforation. The indicator is comprised of a resilient material which forms a resilient convex protrusion on an external surface of the bag. The convex protrusion defines a chamber which is airtight except for the at least one perforation. A containment structure is associated with the perforation to inhibit migration of particles from the interior compartment into the chamber. The resilient material is responsive to an air pressure differential as between the interior compartment and an environment external of the interior compartment to collapse the convex protrusion under a predetermined pressure differential condition.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: May 17, 2016
    Assignee: Sunbeam Products, Inc.
    Inventor: Enrique Plazarte
  • Patent number: 9189936
    Abstract: A security tag for being mounted to a container seal includes a sensor element having a sensor volume which is filled at least partly with an indicator material, an indication area arranged at the sensor volume, and a manipulator element configured to cause, with an abrupt mechanical deformation at the container seal, when opening same, an irreversible, physical and/or chemical alteration of the indicator material which may be perceived visibly or in a tactile manner in the indication area.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: November 17, 2015
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Jennifer Schmidt, Anna Hezinger, Matthias Stich, Gerhard J. Mohr, Sabine Trupp
  • Patent number: 8123028
    Abstract: A contact lens storage and cleaning case is described. The case compromises (a) two contact lens chambers that are closed via a chamber cap for each contact lens; and (b) fluid reservoir and integrated pump. The contact lens chamber can be closed using removable chamber caps each of which has a flexible compressible cavity in whose center is mounted a flexible cap membrane that faces and isolates the chamber. Air can escape from the cavity via an opening in the chamber cap.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: February 28, 2012
    Inventor: Cornelius Doniga
  • Patent number: 7891311
    Abstract: A fluid flow indicator for observation of low flow rates in liquids includes a capillary tube (12) slidably mounted at each end in passageways (4) and (5) and biased into a no-flow indicating position by a castellated elastomeric membrane (14) providing a sealed barrier within a chamber (1) between a first zone (17) and a second zone (18). Fluid flow introduced through spigot (9) causes the capillary tube (12) to slide to the opposite end of the passageways (4) and (5) whereupon the deformed position of the elastomeric membrane (14) can readily be observed through transparent walls (3) in the chamber (1). Upon cessation of flow, the elastomeric membrane (14) causes the capillary tube (12) to revert to its original position.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: February 22, 2011
    Assignee: Keystone Medical Pty Ltd
    Inventors: Kenneth Arthur Logan, Paul Christopher Dastoor, Ian Wesley Robert Clarke, Peter J. Hester
  • Patent number: 7470360
    Abstract: An indicator suitable for signaling restricted flow of a fluid through a filter mounted in a filter assembly includes a housing having an inner cavity. A diaphragm disposed within the housing separates the inner cavity into first and second chambers and deflects from a neutral position in response to applied pressures within the first and second chambers. A tab assembly opposite the diaphragm includes a spring-loaded flag moveable from a first position within the housing to a second position outside the housing. A pin operably coupled to the diaphragm holds the spring-loaded flag within the housing when the diaphragm is in the neutral position. In response to the diaphragm being deflected sufficiently from the neutral position to release the pin, the spring-loaded flag travels to the second position outside the housing, thereby indicating a restricted flow condition for the filter.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: December 30, 2008
    Assignee: Engineered Products Company
    Inventors: Charles Henry Berry, III, H Dianne Hammerand
  • Patent number: 7185955
    Abstract: A tactile and visual indicator is mounted on the hub cap of an axle of a vehicle. The indicator has a deformable face that protrudes away from the hub cap in response to the presence of pressurized air in the space containing the wheel bearings. The position of the deformable face indicates the presence or absence of hub integrity and indication of grease about the wheel bearings.
    Type: Grant
    Filed: October 19, 2004
    Date of Patent: March 6, 2007
    Inventor: Henry Dombroski
  • Patent number: 7131550
    Abstract: A lid for a food storage container includes a lid body with a vacuum sense opening and a vent opening extending through the lid body, a releasable cover disposed over the vent opening, and a pressure-indicating protrusion. The cover impedes air flow into the container through the vent opening until the cover is released. The pressure-indicating protrusion, which has a cavity in it, is in hydraulic communication with the container through the vacuum sense opening. The pressure-indicating protrusion contracts toward the vacuum sense opening in response to negative container pressure.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: November 7, 2006
    Assignee: Braun GmbH
    Inventors: Montserrat Vilalta, Jose Millan, Juan Carlos Coronado, Mariano Penaranda, Antonio Rebordosa, Sergi Gili, Robert Rafols
  • Patent number: 7107928
    Abstract: The present invention describes a container end closure which utilizes a material that is adapted to provide a visible indicator when the internal pressure of the contents increase to a predetermined level. In one embodiment, an interruption in a reinforcing bead incorporated in the end closure is deformed to visually notify a consumer of spoilage due to bacterial activity and to substantially prohibit the use of traditional can openers to access the spoiled contents within the container.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: September 19, 2006
    Assignee: Ball Corporation
    Inventors: Howard C. Chasteen, Mike Richardson, Terre Reingardt
  • Patent number: 7009513
    Abstract: A signal to warn of the open condition of a sub-grade vault whose lid may be open or missing. A spring-loaded placard is held down in the vault by a closed lid and raises above the opening by its own stored energy when the lid is open or missing.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: March 7, 2006
    Assignee: Carson Industries, LLC
    Inventor: Nguyen Thai Dang
  • Patent number: 6877629
    Abstract: Container for storing food products including a base defining a product support surface for supporting the food product and a cover releasably engaging with the base such that when the cover engages with the base, a storage compartment is defined by the cover and the base. The cover includes an air control unit for controlling air pressure in the storage compartment and a window extending downward from the air control unit to surround food products in the storage compartment. A product supported on the product support surface of the base is visible through the window when the cover engages with the base. By providing the window as part of the cover, the base is separable from the window to thereby expose the product support surface of the base so that cakes can be easily placed on the product support surface and then enclosed by the cover.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: April 12, 2005
    Assignee: Housewares America, Inc.
    Inventor: Debbie Jean Meyer
  • Patent number: 6817311
    Abstract: A pressure indicator and a corresponding method are disclosed, the pressure indicator comprising a display diaphragm, optionally transparent, and an indicator diaphragm coupled to and in fluid communication with the display diaphragm. In use, pressure is applied to the diaphragms, which may be amplified, whereby a change in the pressure applied causes relative movement between the diaphragms which is observable either on the outer surface of the display diaphragm or through the display diaphragm. The diaphragms may form a compartment preferably containing a liquid or gel. The indicator diaphragm may bear a recognizable configuration or pattern which can be colored and may comprise a symbol or graphic projecting from its surface. The configuration or pattern may comprise at least two components, each component corresponding to a different pressure. Also disclosed is an inflatable device, especially a football or a tire, comprising such a pressure indicator.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: November 16, 2004
    Assignee: Qinetiq Limited
    Inventors: Andrew S Treen, Chris R Lawrence, Martin Swan, John W Williams
  • Patent number: 6636155
    Abstract: A mechanical gauge having a mechanism for setting multiple alarms within tolerance values. When such tolerance values defined by the mechanism are reached, the same mechanism activates an alarm.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: October 21, 2003
    Assignee: Prolec G.E. S De R.L. De C.V.
    Inventor: Jesús-Gerardo Elizondo-Salinas
  • Publication number: 20030041793
    Abstract: A vacuum insulation panel according to the present invention addresses many of the shortcomings of the prior art. In accordance with the present invention, a vacuum insulation panel comprises a barrier film and a core material and a vacuum detection indicator. The vacuum detection indicator is configured to facilitate the evaluation of the integrity of the vacuum within the vacuum insulation panel. The vacuum detection indicator may comprise a cavity in the core material which allows the barrier material to form a depression when a vacuum is drawn within the panel. Accordingly, as the vacuum is reduced or lost, the depression formed in the barrier material will be similarly reduced or lost. In addition, the vacuum detection indicator may comprise a viewing window configured above the barrier material to permit the evaluator to readily determine whether the vacuum has been reduced or lost. Further, the vacuum detection indicator may comprise a spring-like device configured within the cavity.
    Type: Application
    Filed: September 12, 2002
    Publication date: March 6, 2003
    Applicant: Insulated Shipping Containers, Inc.
    Inventor: Eric M. Hagopian
  • Patent number: 6327902
    Abstract: A low cost air filter restriction indicator gauge for use in conjunction with an internal combustion engine can be achieved by both simplifying individual part configuration and reducing overall part count. More specifically, a simplified design can be achieved by utilizing a one piece base cap which includes a locking extension and reset button integral therewith. By having this part injection moldable, it is easy to fabricate and lower in cost as a complex locking pin assembly can be eliminated. Further, the low cost device can be further enhanced by providing a two color visual indicator which displays one color when the device is in its reset position and a second color when the device is in its locked or set position.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: December 11, 2001
    Assignee: Engineered Products Company
    Inventors: Charles Henry Berry, III, Gregory Matthew Ferris
  • Patent number: 6161417
    Abstract: A restriction indicator for an air cleaner of an internal combustion engine. A bellows-type diaphragm is biased toward a retracted position by a first end of a compression spring. A calibration wheel threadingly engaging the housing supports a second end of the compression spring, such that the restriction indicator can be calibrated by rotation of the calibration wheel. An end of the compression spring is seated on a slanted seating surface so that a plunger is pushed off-center to engage a latch and lock the restriction indicator.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: December 19, 2000
    Assignee: Donaldson Company, Inc.
    Inventor: Larry R. Nepsund
  • Patent number: 5822902
    Abstract: Display apparatus connected to a filler gun of a fuel dispensing station. A carrying body on a prominent part of the filler gun supports a detachable display surface carrier which in turn supports an inflatable balloon shaped element. The balloon shaped element carries an advertising message which is viewable when the balloon shaped element is inflated. A valve on the filler gun is connected to a source of inflation air and to the balloon shaped element. The valve is actuated by the fuel dispensing trigger on the filler gun. During fueling an inflation gas is supplied to the balloon shaped element which in the inflated state prominently displays the advertising message.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: October 20, 1998
    Assignee: Alvern Norway A/S
    Inventor: Stein Alvern
  • Patent number: 5566846
    Abstract: A button enhancement coating system wherein mechanically actuated buttons and vacuum actuated buttons of closures may be provided with a coating system which changes color after the closure has been applied to a container and then removed therefrom with the change in color indicating tampering. The coating system includes a first coating layer applied directly to the upper surface of the button and a second coating layer of a different color applied in overlying and bonded relation to the first coating layer. The second coating layer is preferably transparent and the two colors are selected so that they produce a third color while the coating layers are bonded together. When the two coating layers become separated during the removal of the closure from a container, the button assumes the color of the second coating layer. The first coating layer may have an embossed upper surface including ribs and grooves with the second coating layer flowed thereinto.
    Type: Grant
    Filed: February 8, 1994
    Date of Patent: October 22, 1996
    Assignee: Continental White Cap, Inc.
    Inventor: Albert J. James
  • Patent number: 5339764
    Abstract: A device for optically displaying the pressure of a medium comprises a housing, a piston within the housing which is movable along a longitudinal axis against a restoring force, and an optically transparent element within the housing having a display surface which is visible from outside the housing. An inner wall of the optically transparent element delimits a cavity which is open towards the piston. A surface of a first color, e.g., green, is mounted on the piston and is movable therewith, the colored surface being received within the cavity of the optically transparent element. The optically transparent element includes a circumferential zone of a second color, e.g., red, which colored zone is not directly visible from outside the housing through the display surface.
    Type: Grant
    Filed: April 21, 1993
    Date of Patent: August 23, 1994
    Assignee: WABCO Standard GmbH
    Inventor: Gunther Singbartl
  • Patent number: 5051360
    Abstract: Gas-generating or absorbing activity of microorganisms is detected by providing a vessel in which the microorganisms are incubated, the vessel having a cap with a membrane indicator therein. The membrane has a deformed region which is inflated to indicate the existence of a change in pressure within the vessel as compared with ambient pressure. Automatic monitoring of the inflated portion is disclosed.
    Type: Grant
    Filed: April 24, 1990
    Date of Patent: September 24, 1991
    Assignee: Abo, Inc.
    Inventor: John R. Waters
  • Patent number: 4989745
    Abstract: A container capable of being evacuated by a pump which is removably and sealably attached thereto comprises a cover having a removable valve mounted therein and a container body which is adapted to receive the cover. A compressible indication member is positioned between the periphery of the cover and container body, the visibility of which from the outside of the container provides an indication of the evacuation state of the container. The cover and the container body are movable relative to each other which movement is dependent on the pressure difference between the interior and the surroundings of the container whereby the deformation of the indication member provides an indication of the amount of pressure in the container.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: February 5, 1991
    Inventor: Bernardus J. J. A. Schneider
  • Patent number: 4963693
    Abstract: A protective or purge enclosure provides a positive atmosphere around an operating device such as a hand-held computer or calculator contained therein. The protective enclosure has sufficient flexibility, even though providing a positive, sealed atmosphere, to enable the user to operate the functional features of the device sealed within the enclosure, and the material forming the device is sufficiently transparent to enable the user to view the functional features of the device for operation. A visible indicator provided on the enclosure enables the user to determine if the enclosure is maintaining the positive atmosphere sealed therein.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: October 16, 1990
    Assignee: Ampex Corporation
    Inventor: David A. Kodl
  • Patent number: 4952498
    Abstract: Gas-generating activity of microorganisms is detected by providing a vessel in which the microorganisms are incubated, the vessel having a cap with a membrane indicator therein. The membrane has a deformed region which is inflated to indicate the existence of an increase in pressure within the vessel as compared with ambient pressure. Visual or automatic monitoring of the inflated portion is disclosed.
    Type: Grant
    Filed: May 6, 1988
    Date of Patent: August 28, 1990
    Inventor: John R. Waters
  • Patent number: 4877143
    Abstract: A tamper evident indicating means for a vacuum packed package or bottle comprising an indicia printed seal that is separated from a translucent closure member when the package or bottle is under vacuum so that the indicia is not readable or discernible through the closure member, but when the vacuum is lost, as through tampering, the seal contacts the closure and the indicia printed thereon is readable or discernible to warn of possible tampering.
    Type: Grant
    Filed: June 16, 1988
    Date of Patent: October 31, 1989
    Inventor: Frank P. Travisano
  • Patent number: 4829820
    Abstract: A gauge or indicator (20) for providing a positive on/off visual indication comprises a lens (22) and a transition mount (24) with a resilient diaphragm (32) secured therebetween to define a sealed chamber therein. The chamber is filled with an opaque liquid (34) and a contrasting plug (36) which is secured to the diaphragm (32) and movable therewith responsive to an actuator stem (38) between an "off" position obscured by the liquid and an "on" position wherein the plug is visible behind the lens (22) upon displacement of the liquid. Additional embodiments (50, and 70) are also disclosed.
    Type: Grant
    Filed: October 15, 1987
    Date of Patent: May 16, 1989
    Assignee: LTJ Enterprises, Inc.
    Inventors: Lenard W. Johnson, Thomas C. Johnson
  • Patent number: 4823727
    Abstract: A pressure indicator for use in a pneumatic circuit. A rolling diaphragm (14) is mounted within a housing (9,10) and divides the housing into first and second regions (15,16), one sealed from the other. The diaphragm has an outer sleeve section (18) and a connected inner cup section (19) lying within the outer sleeve section, the outer surface of the cup section and the inner surface of the sleeve section both being subject to pressure in the second region. An indicator (22) is seated within the cup section. The cup section is biased towards the first region against pressure therein, and into a position wherein the indicator lies substantially wholly within the cup section and is shielded from view thereby. The housing has a transparent section through which the indicator may be viewed as it moves out of the cup section in response to increasing pressure differential between the first and second regions.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: April 25, 1989
    Assignee: Domnick Hunter Filters Limited
    Inventors: David Baggett, Alan Bateman, Colin T. Billet
  • Patent number: 4821671
    Abstract: A captive volume device containing a small amount of solid propellant and a safe life indicator such as a colorimeter material or a differential pressure sensor. As the propellant deteriorates, it expends a gas which changes the color of the colorimeter material or causes the differential pressure sensor to alter its position, indicating that the propellant material is useless.
    Type: Grant
    Filed: June 27, 1985
    Date of Patent: April 18, 1989
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Frank G. Borgardt
  • Patent number: 4799383
    Abstract: A gauge or indicator (20) for providing a positive on/off visual indication comprises a lens (22) and a transition mount (24) with a resilient diaphragm (32) secured therebetween to define a sealed chamber therein. The chamber is filled with an opaque liquid (34) and a contrasting plug (36) which is secured to the diaphragm (32) and movable therewith responsive to an actuator stem (38) between an "off" position obscured by the liquid and an "on" position wherein the plug is visible behind the lens (22) upon displacement of the liquid.
    Type: Grant
    Filed: March 31, 1987
    Date of Patent: January 24, 1989
    Assignee: LTJ Enterprises, Inc.
    Inventors: Thomas C. Johnson, Lenard W. Johnson
  • Patent number: 4776331
    Abstract: A bandage useful, for instance, in medical applications includes a rupturable sheet or strip having encapsulated fluid (liquid or gas). The sheet or strip is disposed between the body portion to be bandaged and the outer surface of the bandage. The sheet or strip ruptues when a predetermined pressure is exceeded, thereby releasing the fluid for indicating that the bandage is applied too tightly. When the fluid is a liquid, such as a dye, the released liquid will stain the bandage. When the fluid is a gaseous substance, the release of the gas will be sensed. When a plurality of strips are used, one strip may contain a liquid and another one a gaseous substance, the strips rupturing at different predetermined pressures.
    Type: Grant
    Filed: June 25, 1986
    Date of Patent: October 11, 1988
    Assignee: Command Automation, Inc.
    Inventor: Luther G. Simjian
  • Patent number: 4729337
    Abstract: An air pressure indicator for mounting on an automobile tire valve. An inflatable balloon is used to indicate a desired condition. The balloon is surrounded by a transparent cap. Should the air pressure in the tire fall below a desired level, the balloon will deflate. A free floating valve is positioned in a cavity formed adjacent to the transparent cap. The valve seals an air passage through the transparent cap should the inflatable balloon rupture.
    Type: Grant
    Filed: March 30, 1987
    Date of Patent: March 8, 1988
    Inventor: Edgar Schopp
  • Patent number: 4706830
    Abstract: A vacuum drainage bottle includes a chamber for receiving fluids from a patient and a pressure indicator (9,21) for measuring the pressure in the chamber. Prior to use, the pressure indicator is isolated from the chamber by means of a breakable seal. The seal may be in the form of a recessed membrane (43), which may be ruptured by depressing the pressure indicator, causing a ball (45) to bear against the membrane (43).
    Type: Grant
    Filed: June 21, 1982
    Date of Patent: November 17, 1987
    Assignee: Johnson & Johnson Products, Inc.
    Inventor: Mark V. Wareing
  • Patent number: 4592747
    Abstract: A flow sensor wherein a body (10) that includes a recessed surface (18) is covered by a flexible cover (12). The portion of flexible cover (12) adjacent recessed surface (18) moves between a contracted position and an expanded position to indicate flow.
    Type: Grant
    Filed: June 18, 1984
    Date of Patent: June 3, 1986
    Assignee: Parker-Hannifin Corporation
    Inventor: Scott L. Pool
  • Patent number: 4546793
    Abstract: An improved switching device for indicating the beginning and ending of the breath of a test subject. A flow through housing is provided with an inlet and first and second outlets. A flexible diaphragm is connected in series with the first outlet to serve as a check valve which opens during the high flow rate portion of a breath. A sensitive flow responsive member connected in series with the second outlet opens in response to the presence of gas flow during the low flow rate portion of the breath. A detecting circuit responsive to the position of the flow responsive member accurately signals the beginning and ending of a breath without interference by the check valve.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: October 15, 1985
    Assignee: Sensormedics Corporation
    Inventor: Josef J. Stupecky
  • Patent number: 4509551
    Abstract: An improved switching device for indicating the beginning and ending of the breath of a test subject. A flow through housing is provided with an inlet and first and second outlets. A flexible diaphragm is connected in series with the first outlet to serve as a check valve which opens during the high flow rate portion of a breath. A sensitive flow responsive member connected in series with the second outlet opens in response to the presence of gas flow during the low flow rate portion of the breath. A detecting circuit responsive to the position of the flow responsive member accurately signals the beginning and ending of a breath. A damping member connected to the flexible diaphragm prevents the latter from vibrating at low breath flow rates and thereby stabilizes the motion of the flow responsive member.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: April 9, 1985
    Assignee: Sensormedics Corporation
    Inventor: Charles R. Luper
  • Patent number: 4502491
    Abstract: An apparatus for determining the pressure between a support dressing and a body portion surrounded by said support dressing comprises a device for sensing the pressure, a device for indicating the pressure sensed and an arrangement transferring the pressure sensed to the device for indicating the pressure. The device for sensing the pressure may have a first part borne by the support dressing and a second part movable relative to the first one and being urged against the body portion by a spring or the like, the second part being connected to an indicator cooperating with a graduation through a lever system. The device for sensing the pressure may, however, also comprise a cavity filled with an incompressible fluid, said cavity being defined by a wall which is flexible at least in a region abutting the body portion.
    Type: Grant
    Filed: March 22, 1982
    Date of Patent: March 5, 1985
    Assignee: Hans G. Ender
    Inventors: Hans G. Ender, Wilhelm Sillaba
  • Patent number: 4421124
    Abstract: A pressure detection arrangement embedded between the skin of a portion of the body and a means used to surround and/or immobilize that particular part of the body, such as a cast. The pressure detection arrangement is a bifurcated capsule having a reservoir cavity and an indicator cavity. A colored fluid is initially contained only within the reservoir cavity by either a frangible disc across the conjunction of the indicator cavity with the reservoir cavity or an extensible bladder within the reservoir cavity. The indicator cavity is transparent or translucent and protrudes through the cast to regions external thereto.If there is swelling of the limb due to medical complications, the skin presses against the capsule and either breaks the frangible disc allowing the colored fluid to pass into the indicator cavity or forces the extensible bladder into the indicator cavity of the capsule. Both methods provide a visual indication in the indicator cavity of excessive pressure on the limb.
    Type: Grant
    Filed: June 8, 1981
    Date of Patent: December 20, 1983
    Inventor: Lee Marshall
  • Patent number: 4404924
    Abstract: A medical suction device is disclosed which includes a vacuum indicator flag. This flag is made up of a flexible tube capped with a plug. The rigidity of the walls of the tube is chosen such that the walls collapse when the pressure inside the tube falls below a predetermined value, thereby allowing the flag to droop. In addition the rigidity of the tube serves to hold the flag upright when the pressure inside the tube rises above a second predetermined value. Thus the state of the flag (upright or drooped) provides a remote indication of the pressure being developed by the suction device. In addition, the suction device uses a constant force coiled ribbon spring to provide substantially constant suction as the suction device is filled. Furthermore, the suction device includes a plurality of separately valved drainage receptacles which can be folded and stored compactly against the drainage device.
    Type: Grant
    Filed: September 5, 1980
    Date of Patent: September 20, 1983
    Assignee: UreSil Company
    Inventors: Edward M. Goldberg, Seymour Bazell
  • Patent number: 4400123
    Abstract: Methods and apparatus are provided for protecting nuts and protruding threads of bolts from corrosion and damage. A cup-shaped cap is provided for sealingly enclosing the exposed threads. A suitable protecting fluid may be introduced through a charging port, and an expandable bladder protruding from the side of the cap indicates that the cap is maintaining the protective fluid under pressure. A nut cover is slidably mounted to the cap, and serves to protect the nut from the environment.
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: August 23, 1983
    Assignee: Rodun Development Corporation
    Inventor: Ronald G. Dunegan
  • Patent number: 4366708
    Abstract: A pressure checker for a pneumatic tire having a tire valve, including a cap member defining an open ended chamber therein and adapted for sealing threaded engagement with the tire valve, a pressing member provided in the chamber and adapted to press the tire valve open when the cap member is threaded on the tire valve, and inflatable membrane provided in the chamber and inflatable by an air pressure released from the tire when the tire valve is opened by the pressing member so that from the degree of deformation or inflation of the membrane an observer can check the air pressure of the tire.
    Type: Grant
    Filed: February 6, 1981
    Date of Patent: January 4, 1983
    Inventor: Hisanori Warihashi
  • Patent number: 4361107
    Abstract: A pressure indicating device for use with medical cannulae having balloon type sealing cuffs such as tracheal tubes. The device would be added to a normal pilot balloon to indicate having exceeded a preset pressure by having a long tubular structure that could be folded inside itself telescopically at low pressure and would pop-out at the preset pressure. When elongated or popped-out, a visual indicator would be exposed until the overpressure was corrected and the tube again tucked into itself.
    Type: Grant
    Filed: November 20, 1980
    Date of Patent: November 30, 1982
    Inventor: Gordon A. Gereg
  • Patent number: 4295566
    Abstract: An evacuated article-containing package assembly with a vacuum integrity indicator comprises an air-impervious package having an access opening and having at least a flexible portion. An article is included inside the package. A member is included inside the package which is compressible under the influence of pressure less than atmospheric pressure. A closure seal is on the package for sealing the access opening, with the sealed package being air-evacuated. The compressible member is adapted to expand against the flexible portion of the package to outwardly expand the flexible portion if the pressure inside the package equalizes with the pressure outside the package. When this occurs, the expanded flexible portion serves as a visual indicator that there is no vacuum condition inside the package.
    Type: Grant
    Filed: May 7, 1980
    Date of Patent: October 20, 1981
    Assignee: Becton, Dickinson and Company
    Inventor: Robert C. Vincek
  • Patent number: 4292916
    Abstract: A disposable timer and product storage condition indicator in which components of a carrier mixture react physically and/or chemically with one or more receptive layers. The carrier mixture and receptive layers are so comprised as to react during a given time interval, the interval being dependent upon and constantly modified by such external physical conditions as temperature, moisture, light, radiation, or pressure. During the timing period the device can either give a changing color display which is matched in rate to the declining freshness of a food or medicine in a container to which the device is attached or can cause the appearance or disappearance of words or symbols or sticky areas or odors. A variety of means for activating the timer are possible.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: October 6, 1981
    Assignee: Micro-Circuits Company
    Inventors: Robert F. Bradley, Lindell P. Bradley
  • Patent number: 4287750
    Abstract: A device for checking the functioning of a gas measuring apparatus which includes a tubular connection for the passage of a gas so that it can be directed through a tube mounted in the connection which has means therein such as a chemical for measuring the gas which is passing therethrough. The device comprises a translucent diffusing screen mounted on the tubular connection so as to be able to view through the screen and into the gas passage and a spring diaphragm connected to the tube having a side disposed in space relationship to the screen and viewable through the screen and gas between the screen and the diaphragm when the diaphragm is flexed in one direction in respect to the screen so as to position it closer to the screen.
    Type: Grant
    Filed: October 4, 1979
    Date of Patent: September 8, 1981
    Assignee: Dragerwerk AG
    Inventors: Wolfgang Eckstein, Horst Rabenecker