US3840265A - Construction of stabilised platform - Google Patents

Construction of stabilised platform Download PDF

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Publication number
US3840265A
US3840265A US00288560A US28856072A US3840265A US 3840265 A US3840265 A US 3840265A US 00288560 A US00288560 A US 00288560A US 28856072 A US28856072 A US 28856072A US 3840265 A US3840265 A US 3840265A
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United States
Prior art keywords
platform
base platform
actuator
tilt
vehicle
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00288560A
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English (en)
Inventor
J Stirling
J Colgan
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Institue for Industrial Research and Standards
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Institue for Industrial Research and Standards
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G3/00—Ambulance aspects of vehicles; Vehicles with special provisions for transporting patients or disabled persons, or their personal conveyances, e.g. for facilitating access of, or for loading, wheelchairs
    • A61G3/006—Means for reducing the influence of acceleration on patients, e.g. suspension systems of platforms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
    • F16F15/027—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means comprising control arrangements
    • F16F15/0275—Control of stiffness
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00—General characteristics of devices
    • A61G2203/30—General characteristics of devices characterised by sensor means
    • A61G2203/36—General characteristics of devices characterised by sensor means for motion

Definitions

  • ABSTRACT Primary Examiner-Philip Goodman Attorney, Agent, or Firm-McGlew and Tuttle [5 7] ABSTRACT
  • the platform is mounted for tilting about longitudinal and transverse axes, and a level sensor operates, through an actuator control, to effect operation of an actuator to continually maintain the platform in a horizontally stabilized position.
  • the actuator is further mounted on a vertically extending variable height ac tuator which, through a motion sensor, maintains the v platform at a constant height in space despite movement of the floor of the vehicle on which theplatform may be mounted. Thereby a patient riding in an arnbu lance and lying on the platform is prevented from being subjected to various vibrations resulting 1 from motionfof the vehicle.
  • the present invention relates to a construction of stabilized platform for use invehicles and in particular for use in ambulances.
  • the body When considering the problem of human vibration the body can for all practical purposes be treated as a number of coupled spring-mass-damper systems. It will be appreciated that the body has a number of internal organs capable of movement relative to the body. When all these internal organs are taken into account,
  • the most commonly experienced symptom of vibration is that of motion sickness due to low frequencies and large amplitude, for example, in aircraft and ships.
  • a supine patient will experience vertical vibration as well as longitudinal and transverse vibration in a moving ambulance. It has been found that the main region in which stabilisation is required is for vertical vibrations of frequencies less than 2 Hz. where vibration control using mechanical components is particularly difficult.
  • the vibrations are transmitted to the patient through a chain of mechanical elements comprising: the road surface to a tire, the tire through the wheel through the springs/damper to the chassis; the chassis to the stretcher base to thestretcher; and from the stretcher to the patient. All of these cascaded elements are capable of filtering or attenuating the effect of vibration but they are unfortunately also capable ofamplifying the vibrations transmitted to the patient.
  • the main transverse forces acting upon a stretcher patient are due to the centrifugal forces which appear during cornering.
  • the duration depends solely on the curvature of the road and on the speed-of the ambulance.
  • the acceleration and deceleration effects during normal stopping and starting in city traffic also impose head to foot forces on the patient which are of the same low frequency nature as the transverse accelerations.
  • the present invention is directed towards providing an improved construction of stabilized platform for vehicles.
  • the invention provides a stablised platform for mounting in a vehicle comprising: a base platform; pivot means for supporting the base platform so to allow the base platform to tilt about a longitudinal axis and a horizontal axis; means for controlling the tilt of base platform in response to lateral forces; a vertical variable height actuator for support of the base platform in a vehicle; a motion sensor operatively connected between the height actuator and the floor of the vehicle; and means for causing the height actuator to raise and lower the base platform-in opposition to the motion of the floor.
  • FIG. 2 is a further diagrammatic side view of a Stablised ambulance platform according to the invention.
  • FIG. 3 is a cross-sectionalview of a typical double acting force balance pneumatic cylinder used in some embodiments of the invention
  • FIG. 4 is a diagrammatic side .view of a further stablized ambulance platform according to the present invention.
  • FIG. Si an end view of a stablized ambulance platform illustrated in FiG. 4,
  • FIG. 6 is a view illustrating the forces acting on the stablized ambulance platform illustrated in FIGS. 4 and 5,
  • FIG. 7 is a diagrammatic side view of a still further stablized ambulance platform according to the invention.
  • FIG. 8 is a perspective view of another stablized ambulance platform mounted in an ambulance
  • FIG. 9 is a side view of the stablized ambulance platform of FIG. 8.
  • FIG. is an end view of the stablized platform of FIG. 8,
  • FIG. 11 is a plan view of the stablized ambulance platform of FIG. 8,
  • FIG. 12 is a typical longitudinal cross-sectional view of portion of the stablized ambulance platform illustrated in FIG. 8 and FIG. 13 is a typical transverse cross-sectional view of portion of the ambulance platform illustrated in FIG. 8.
  • FIG. 1 illustrates the compensation of lateral forces only while FIG. 2 illustrates the compensation of vertical forces or vibration.
  • the stabilized ambulance platform comprises a base platform 1 mounted on pivot means 2.
  • the pivot means 2 are adapted to tilt the base platform about a longitudinal axis and a horizontal axis.
  • An actuator 3 is connected between the base platform 1 and the floor 4 of an ambulance.
  • the actuator 3 is adapted to tilt the base platform 1 in the direction of the arrow, that is to say about a transverse axis through the pivot means 2.
  • the actuator 3 is connected to an actuator control 5 which is in turn operatively connected to a level sensor 6 above the base platform 1.
  • a similar actuator, actuator control, and level sensor is provided to control the tilting of the phase platform 1 about the longitudinal axis.
  • the actuator control 5 feeds a signal to the actuator 3 and causes the base platform 1 to tilt.
  • the actuator control 5 When the level sensor 6 is in an unbalanced condition due to lateral forces, a signal is fed to the actuator control 5. which in turn moves the actuator 3 to tilt the base platform 1. When the base platform 1 and the level sensor 6 are in balance the actuator control 5 is stopped. If the level sensor 6 is a pendulum, balance is achieved when the pendulum acts at right angles to the base platform 1.
  • the base platform 1 is mounted by means of a vertical variable height actuator 7 on the floor 4.
  • a motion sensor, for example, an inertial transducer 8 is mounted between the base platform 1 and. the floor 4. The displacement of any floor movement is detected by the motion sensor and a signal fed to the actuator 7 in order to drive the actuator 7 in opposition to the motion of the floor 4 so that a patient remains virtually vibration free.
  • a displacement transducer 9 stabilises the actuator 7 by fixing a mean suspension height.
  • FIG. 3 there is illustrated a double acting force balanced pneumatic cylinder indicated generally by the reference numeral 10. This is one typical construction of a double acting force balanced pneumatic cylinder. There are, however, many such cylinders in commercial use.
  • the force balanced pneumatic cylinder 10 comprises a positioner 11 and a pneumatic cylinder 12 and piston 13.
  • the positioner 11 has a control signalport l5, outlet ports 16 and 17, an inlet port 18 and an exhaust port 19.
  • the outlet ports 17 and 18 are connected to the pneumatic cylinder 13.
  • a piston 20 and diaphragm 21 are mounted in the positioner 11 and are connected by means of a rod 22 to a piston 23 controlled by a compression spring 24.
  • the compression spring 24 provides a feed back signal force to the positioner.
  • the compression of the compression spring 24 and hence the feedback signal force is controlled by a pivotally mounted lever 25.
  • the pivotally mounted lever 25 is connected in known manner by a follower 26 and a cam 27 on the piston rod of the cylinder 13 to the. prime mover it is desired to control.
  • a valve stem 28 is mounted between the exhaust outlet ports 16 and 17.
  • The'double acting force balanced pneumatic cylinder 10 operates in conventional manner. An increase in the control signal pressure into the control signal port 13 causes the combined assembly namely the piston 20, the rod 22 and the piston 23 to move to the left under the increased pressure which. is acting against the piston 20 and the diaphragm 21.
  • valve stem 28 causes air to flow through the port 16 from the supply port 18 to the pneumatic cylinder 13 changing the piston 12 position.
  • the compression spring 24 is further compressed.
  • a decrease in the pressure of control signal into the control port 13 will cause the valve stem 28 to move to the right, increase the pressure on the right hand side of the piston 20 and diaphragm 21 and hence decrease the pressure on the left hand side of the piston 20 and diaphragm 21 thereby causing the piston rod 22 to move to the left thus causing a decrease in the compression of the compression spring 24 with the result that the control force and feed back force again equalise and further movement of the piston rod 22 is prevented.
  • FIGS. 4, 5 and 6 there is illustrated means for controlling the tilt of the base platform 1 about its longitudinal axis.
  • a pendulum 30 is mounted beneath a base platform 1 and rigidly connected thereto.
  • the base platform 1 is adapted for pivoting about a longitudinal axis in the direction of the arrow B as illustrated in FIGS. 4, 5 and 6.
  • This stabilised platform is for simplicity shown only pivoting about this one axis.
  • the forces acting bn the pendulum are the weight W of the pendulum and the centrifugal force F. These forces may be resolved into a resultant force R in conventional manner by a simple triangle of forces.
  • the base platform 1 may be adapted to pivot about a transverse axis as well.
  • the pendulum 30 may be connected by a universal joint to the vehicle and connected rigidly by transversely and longitudinally disposed links to the base platform 1. Many arrangements of this will readily come to mind to those skilled in the art. Dampers may be incorporated to adjust the response of the base platform 1 to the movement of the pendulum 30.
  • variable height actuator which comprises a support bellows 40, an inlet valve 41 controlled by an electro magnet 42 and an outlet valve 43 con-' trolled by an electro magnet 44.
  • the support bellows 40 supports the base platform 1 and a displacement transducer 45 is connected between the base platform 1 and the floor 4 of the vehicle.
  • the displacement transducer 45 is fed through a conventional delay 46 to a comparator 47.
  • a mean pressure control signal from an electrical height control 48.
  • the signal from the comparator 47 is fed to valve control circuits 49 which control in conventional manner the operation of the electro magnets 42 and 44.
  • a pressure transducer 50 is operatively connected between the support bellows 40 and the comparator 47.
  • any motion of the floor 4 relative to the base platform 1 causes a change in internal air pressure in the bellows 40 and is measured directly by the pressure transducer 50 which feeds a signal through to the comparator 47.
  • This causes the comparator 47 to comparethe signal being delivered by the displacement transducer with that of the height control 48.
  • the signal is then sent to the valve control circuits 49 and either the inlet valve 41 or the outlet valve 43 is opened, thus causing the pressure in the support bellows 40 to be increased or decreased, thus raising or lowering the base platform 1 relative to the floor 4.
  • the patient lying on the base platform 1 does not therefore experience the motion of the floor. Under very slow changes in internal pressure the reaction'of pressure transducer 50 may not be adequate.
  • the displacement transducer 45 and the delay 46 act to stabilise the system and prevent large movements or creep of the base platform 1. Needless to say the arrangements previously described for the compensation of lateral forces may be incorporated in this embodiment and previously would be. However, for clarity they have been omitted. I
  • FIGS. 8 to 13 there is illustrated an alternative embodiment of the invention which is a stabilised platform for mounting in a vehicle and in particular a stabilised platform for mounting in an ambulance,
  • the stabilized platform comprises a base platform 62, pivotably mounted at 63, within a frame 64 which is in turn pivotably mounted at 65 within a frame 66.
  • the base platform 62 is capable of tilting about a longitudinal axis and transverse axis, that is to say the axes defined by the supports at 63 and 65. Compensation for v lateral forces may be achieved as hereinbefore described, and they are omitted from the drawings for clarity.
  • the frame 66 issupported by means of a pair of cantilevered arms 67.
  • The. cantilivered arms are mounted by means of rollers 68 on bars 69, rigidly mounted between support members 70 and 71 on the wall 61.
  • a double acting force balanced pneumatic cylinder 72 is mounted on the wall 61 by a support plate I 73.
  • the double acting force balanced pneumatic cylinder 72 supports on its piston rod 74 a pulley 75.
  • a length of flexible wire 76 is connected between the sup port member 71 and the frame 66. It will be appreciated that vertical movement of the piston rod 74 will cause vertical movement of the frame 66.
  • the double acting force balanced pneumatic cylinder 72 is fed and operated as described with reference to FIG. 3. In operation the base platform 62 in response to lateral forces may be tilted, while the double acting force balanced pneumatic cylinder 72 will raise andlower the base platform 62 in the opposite direction to any motion imparted to the floor 60 by the vehicle travelling over the road.
  • a stabilised platform for mounting in a vehicle comprising: a base platform; pivot means supporting the base platform so as to allow the base platform to tilt about a longitudinal axis and a horizontal axis; means controlling the tilt of the base platform in response to lateral forces; a vertical variable height actuator supporting the base platform in a vehicle and comprising a double acting force-balanced pneumatic cylinder; a motion sensor operatively connected between the height actuator and the floor of the vehicle; and means causing the height actuator to raise or lower the base platform in opposition to the motion of the floor.
  • a stabilized platform as claimed in claim 1 in which the means controlling the tilt of the base platform about each axis comprises a tilt actuator
  • control means operatively connected between the tilt actuator and the level sensor whereby the resultant forces of gravity and lateral forces acts downwards at right angles to the base platform.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Physics & Mathematics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Vehicle Body Suspensions (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Body Structure For Vehicles (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
US00288560A 1971-09-13 1972-09-13 Construction of stabilised platform Expired - Lifetime US3840265A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE1157/71A IE35638B1 (en) 1971-09-13 1971-09-13 Construction of stabilised platform

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US3840265A true US3840265A (en) 1974-10-08

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US (1) US3840265A (fr)
JP (1) JPS4876392A (fr)
DE (1) DE2244739A1 (fr)
FR (1) FR2152876B1 (fr)
GB (1) GB1401473A (fr)
IE (1) IE35638B1 (fr)
IT (1) IT972174B (fr)
NL (1) NL7212374A (fr)

Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005424A2 (fr) * 1978-05-01 1979-11-14 United Technologies Corporation Appareil pouvant soulever et baisser de manière synchrone un brancard pour une ambulance aéroportée et capable d'atténuer les effets d'un crash
US4246984A (en) * 1979-03-19 1981-01-27 Mrs. Robert L. (Euna A.) Seay Safety apparatus for wheelchairs
US4541134A (en) * 1982-09-04 1985-09-17 The University Of Bath Vibration damping supports
US4578833A (en) * 1983-04-05 1986-04-01 Kinetic Concepts, Inc. Therapeutic oscillating bed
WO1994007744A1 (fr) * 1992-10-07 1994-04-14 Air Methods Corporation Systeme de chassis a plusieurs etages pour civieres
US5383629A (en) * 1992-10-07 1995-01-24 Air Methods Corporation International Emergency medical system
US5497968A (en) * 1994-10-05 1996-03-12 Vancouver Island Helicopters Ltd. Emergency response equipment securing system and accessories
US5738306A (en) * 1995-10-13 1998-04-14 Air Methods Corporation Articulating patient loading system and transport device for aircraft
US5755478A (en) * 1995-06-06 1998-05-26 Northrop Grumman Corporation Mobile self-contained trauma care system
US5785277A (en) * 1995-10-13 1998-07-28 Air Methods Corporation Patient loading system and transport device for aircraft
US5810178A (en) * 1996-08-07 1998-09-22 Air Methods Corporation Equipment mounting frame for aircraft
US6001057A (en) * 1998-03-26 1999-12-14 Northrop Grumman Corporation Self-contained isolation and enviromental protection system
EP0995924A3 (fr) * 1998-10-21 2000-07-12 Delta Tooling Co., Ltd. Isolateur de vibrations avec ressorts magnétiques
US6152401A (en) * 1997-12-23 2000-11-28 Air Methods Corporation Deployable chair system for use in patient transport aircraft
US6234172B1 (en) 1996-06-21 2001-05-22 Integrated Medical Systems, Inc. Control and display configuration layout
US6273089B1 (en) 1996-06-21 2001-08-14 Integrated Medical Systems, Inc. Automatic mechanical lock down for transportable life support system
EP1191861A1 (fr) * 1999-05-28 2002-04-03 David E. Grober Plate-forme autonome stabilisee a autocorrection et reglage automatique du niveau
US6488029B1 (en) 1996-06-21 2002-12-03 Integrated Medical Systems, Inc. Self-contained transportable life support system
US6718130B2 (en) * 1999-05-28 2004-04-06 David E. Grober Stabilized camera and marker buoy for media coverage of aquatic events
US7028351B1 (en) * 2004-12-30 2006-04-18 Calzark Modular patient support system
US20080023976A1 (en) * 2006-07-28 2008-01-31 Myers Will J Patient support system for medical transport vehicles
US20080116267A1 (en) * 2006-11-08 2008-05-22 Barber Jeffrey B Container screener
US20090124864A1 (en) * 2007-11-09 2009-05-14 Steven Bruce Alexander Information and pneumatic architecture for a patient care and treatment device
US20090119834A1 (en) * 2007-11-09 2009-05-14 Todd Douglas Kneale Modular transportable life support device
US20090255058A1 (en) * 2008-04-15 2009-10-15 Ferno-Washington, Inc. Apparatus and methods for litter support system for vehicles
NL1036498C2 (en) * 2009-02-02 2010-08-03 Janssen Prec Engineering B V Active vibration isolation for ambulance stretchers.
US7818840B2 (en) 2007-11-09 2010-10-26 Integrated Medical Systems, Inc. Foldable, portable trauma treatment and monitoring patient platform
US20130233999A1 (en) * 2011-09-02 2013-09-12 Ferno-Washington, Inc. Litter support assembly for medical care units having a shock load absorber and methods of their use
US8636154B2 (en) 2010-07-12 2014-01-28 Ferno-Washington, Inc. Litter support systems for medical care units and methods of their use
US20140048503A1 (en) * 2012-08-20 2014-02-20 Ace-Hinge Tech Co., Ltd. Hanger panel and hanger device using the same
US8992238B2 (en) 2010-07-12 2015-03-31 Ferno-Washington, Inc. Mounting system having a mounting plate with mounting studs and electrical contacts
US9362610B2 (en) 2012-02-14 2016-06-07 Ferno-Washington, Inc. Quick antenna attachment system
US9611975B2 (en) 2013-02-11 2017-04-04 Ferno-Washington, Inc. Equipment mounting system
CN107822826A (zh) * 2017-11-28 2018-03-23 杨月权 一种医疗儿科用辅助治疗座椅
USD835499S1 (en) 2013-02-11 2018-12-11 Ferno-Washington, Inc. Equipment mounting plate
US10307313B2 (en) 2013-02-11 2019-06-04 Ferno-Washington, Inc. Equipment mounting system
US10398203B2 (en) 2014-02-11 2019-09-03 Ferno-Washington, Inc. Crash-ready, portable, compartmentalization device
US10398207B2 (en) 2014-02-11 2019-09-03 Ferno-Washington, Inc. Crash-ready, portable, compartmentalization device
US10786055B2 (en) 2014-07-18 2020-09-29 Ferno-Washington, Inc. Crash-ready, portable, compartmentalization device
US11083265B2 (en) 2014-02-11 2021-08-10 Ferno-Washington, Inc. Magnetic pouch attachment mechanism with crash stable locking teeth
US11364826B2 (en) * 2018-10-30 2022-06-21 Fox Factory, Inc. Sealed boat seat suspension
US20220242471A1 (en) * 2019-09-06 2022-08-04 Covidien Lp Cart for medical equipment

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2534826C2 (de) * 1975-08-05 1984-12-06 Binz Gmbh & Co, 7073 Lorch Abgefederte Tragenbühne
JPS5442894A (en) * 1977-09-12 1979-04-05 Morita Mfg Working mechanism of treatment table and treatment table device that use said table
DE2936617A1 (de) * 1979-09-11 1981-03-26 Binz Gmbh & Co, 73547 Lorch Durch eine einstellbare federung abgestuetztes tragengestell, insbesondere fuer krankentragen
DE4115639A1 (de) * 1991-05-14 1992-11-19 Helge Katharina Lutz Krankenwagen

Cited By (71)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005424A2 (fr) * 1978-05-01 1979-11-14 United Technologies Corporation Appareil pouvant soulever et baisser de manière synchrone un brancard pour une ambulance aéroportée et capable d'atténuer les effets d'un crash
EP0005424A3 (fr) * 1978-05-01 1979-11-28 United Technologies Corporation Appareil pouvant soulever et baisser de manière synchrone un brancard pour une ambulance aéroportée et capable d'atténuer les effets d'un crash
US4178032A (en) * 1978-05-01 1979-12-11 United Technologies Corporation Apparatus for synchronously elevating and lowering air-ambulance litter with crash attenuation capability
US4246984A (en) * 1979-03-19 1981-01-27 Mrs. Robert L. (Euna A.) Seay Safety apparatus for wheelchairs
US4541134A (en) * 1982-09-04 1985-09-17 The University Of Bath Vibration damping supports
US4578833A (en) * 1983-04-05 1986-04-01 Kinetic Concepts, Inc. Therapeutic oscillating bed
WO1994007744A1 (fr) * 1992-10-07 1994-04-14 Air Methods Corporation Systeme de chassis a plusieurs etages pour civieres
US5372339A (en) * 1992-10-07 1994-12-13 Air Methods Corporation International Multi-tiered litter rack system
US5383629A (en) * 1992-10-07 1995-01-24 Air Methods Corporation International Emergency medical system
US5497968A (en) * 1994-10-05 1996-03-12 Vancouver Island Helicopters Ltd. Emergency response equipment securing system and accessories
US5755478A (en) * 1995-06-06 1998-05-26 Northrop Grumman Corporation Mobile self-contained trauma care system
US5738306A (en) * 1995-10-13 1998-04-14 Air Methods Corporation Articulating patient loading system and transport device for aircraft
US5785277A (en) * 1995-10-13 1998-07-28 Air Methods Corporation Patient loading system and transport device for aircraft
US6899103B1 (en) 1996-06-21 2005-05-31 Integrated Medical Systems, Inc. Self contained transportable life support system
US6234172B1 (en) 1996-06-21 2001-05-22 Integrated Medical Systems, Inc. Control and display configuration layout
US6273089B1 (en) 1996-06-21 2001-08-14 Integrated Medical Systems, Inc. Automatic mechanical lock down for transportable life support system
US6488029B1 (en) 1996-06-21 2002-12-03 Integrated Medical Systems, Inc. Self-contained transportable life support system
US5810178A (en) * 1996-08-07 1998-09-22 Air Methods Corporation Equipment mounting frame for aircraft
US6152401A (en) * 1997-12-23 2000-11-28 Air Methods Corporation Deployable chair system for use in patient transport aircraft
US6001057A (en) * 1998-03-26 1999-12-14 Northrop Grumman Corporation Self-contained isolation and enviromental protection system
EP0995924A3 (fr) * 1998-10-21 2000-07-12 Delta Tooling Co., Ltd. Isolateur de vibrations avec ressorts magnétiques
US6241059B1 (en) 1998-10-21 2001-06-05 Delta Tooling Co., Ltd. Vibration isolator having magnetic springs
EP1191861A1 (fr) * 1999-05-28 2002-04-03 David E. Grober Plate-forme autonome stabilisee a autocorrection et reglage automatique du niveau
US6718130B2 (en) * 1999-05-28 2004-04-06 David E. Grober Stabilized camera and marker buoy for media coverage of aquatic events
US6611662B1 (en) * 1999-05-28 2003-08-26 David E. Grober Autonomous, self leveling, self correcting stabilized platform
EP1191861A4 (fr) * 1999-05-28 2006-12-06 David E Grober Plate-forme autonome stabilisee a autocorrection et reglage automatique du niveau
US7028351B1 (en) * 2004-12-30 2006-04-18 Calzark Modular patient support system
US20080023976A1 (en) * 2006-07-28 2008-01-31 Myers Will J Patient support system for medical transport vehicles
US7328926B1 (en) * 2006-07-28 2008-02-12 Myers Will J Patient support system for medical transport vehicles
US20080116267A1 (en) * 2006-11-08 2008-05-22 Barber Jeffrey B Container screener
US20090124864A1 (en) * 2007-11-09 2009-05-14 Steven Bruce Alexander Information and pneumatic architecture for a patient care and treatment device
US20090119834A1 (en) * 2007-11-09 2009-05-14 Todd Douglas Kneale Modular transportable life support device
US8033281B2 (en) 2007-11-09 2011-10-11 Todd Douglas Kneale Modular transportable life support device
US7818840B2 (en) 2007-11-09 2010-10-26 Integrated Medical Systems, Inc. Foldable, portable trauma treatment and monitoring patient platform
US7883133B2 (en) * 2008-04-15 2011-02-08 Ferno-Washington, Inc. Apparatus and methods for litter support system for vehicles
US20110089124A1 (en) * 2008-04-15 2011-04-21 Robert Chinn Apparatus and methods for litter support system for vehicles
US20090255058A1 (en) * 2008-04-15 2009-10-15 Ferno-Washington, Inc. Apparatus and methods for litter support system for vehicles
US8276962B2 (en) 2008-04-15 2012-10-02 Ferno-Washington, Inc. Apparatus and methods for litter support system for vehicles
NL1036498C2 (en) * 2009-02-02 2010-08-03 Janssen Prec Engineering B V Active vibration isolation for ambulance stretchers.
US8992238B2 (en) 2010-07-12 2015-03-31 Ferno-Washington, Inc. Mounting system having a mounting plate with mounting studs and electrical contacts
US8636154B2 (en) 2010-07-12 2014-01-28 Ferno-Washington, Inc. Litter support systems for medical care units and methods of their use
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Also Published As

Publication number Publication date
FR2152876A1 (fr) 1973-04-27
GB1401473A (en) 1975-07-16
IE35638B1 (en) 1976-04-14
IT972174B (it) 1974-05-20
JPS4876392A (fr) 1973-10-15
NL7212374A (fr) 1973-03-15
FR2152876B1 (fr) 1976-01-23
DE2244739A1 (de) 1973-04-26

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