WO2000002438A2 - Mecanisme de declenchement basse pression - Google Patents

Mecanisme de declenchement basse pression Download PDF

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Publication number
WO2000002438A2
WO2000002438A2 PCT/US1999/015480 US9915480W WO0002438A2 WO 2000002438 A2 WO2000002438 A2 WO 2000002438A2 US 9915480 W US9915480 W US 9915480W WO 0002438 A2 WO0002438 A2 WO 0002438A2
Authority
WO
WIPO (PCT)
Prior art keywords
assembly
hydrostatic
force
hydraulic
pressure
Prior art date
Application number
PCT/US1999/015480
Other languages
English (en)
Other versions
WO2000002438A3 (fr
Inventor
Kenneth L. Crowder
Lucas Willemse
Original Assignee
Deep Six Enterprises, Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Deep Six Enterprises, Inc. filed Critical Deep Six Enterprises, Inc.
Priority to AU49782/99A priority Critical patent/AU4978299A/en
Publication of WO2000002438A2 publication Critical patent/WO2000002438A2/fr
Publication of WO2000002438A3 publication Critical patent/WO2000002438A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C9/00—Life-saving in water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B22/00—Buoys
    • B63B22/04—Fixations or other anchoring arrangements
    • B63B22/08—Fixations or other anchoring arrangements having means to release or urge to the surface a buoy on submergence thereof, e.g. to mark location of a sunken object
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B22/00—Buoys
    • B63B22/04—Fixations or other anchoring arrangements
    • B63B22/08—Fixations or other anchoring arrangements having means to release or urge to the surface a buoy on submergence thereof, e.g. to mark location of a sunken object
    • B63B22/14—Buoy-to-object securing means responsive to hydrostatic pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C9/00—Life-saving in water
    • B63C2009/0023—Particular features common to inflatable life-saving equipment
    • B63C2009/0029—Inflation devices comprising automatic activation means, e.g. for puncturing gas-generating cartridges
    • B63C2009/0041—Inflation devices comprising automatic activation means, e.g. for puncturing gas-generating cartridges activated by presence of water
    • B63C2009/0052—Inflation devices comprising automatic activation means, e.g. for puncturing gas-generating cartridges activated by presence of water by water pressure

Definitions

  • This invention relates to the field of methods and apparatus for providing a low-pressure triggering mechanism.
  • Such excessive sensitivity can exist, for instance, in triggering mechanisms employing flexible diaphragms, or bellows, in barostatic and hydrostatic applications utilizing relatively low levels of air pressure or water pressure for actuation. In these applications, the sensitivity required of the input stage can result in inadvertent actuation caused by forces experienced in ordinary use.
  • the present invention provides a hydraulic mechanism which both multiplies the actuation force collected from the external actuation medium and provides a buffering function to prevent inadvertent actuation caused by shock, vibration, and other transient forces.
  • the present invention also provides a pressure relief system in the differential chamber behind the flexible diaphragm to prevent excessive pressurization of the chamber, which might otherwise impede the movement of the diaphragm.
  • the present invention thus presents a triggering mechanism capable of actuation in a low-pressure medium without undue sensitivity to inadvertent actuation due to shock, vibration, or other transient forces.
  • Figure 1 Depicts a side view of the low-pressure triggering mechanism in a marine inflation device application in the pre-actuation configuration.
  • Figure 2 Depicts a top view of the low-pressure triggering mechanism in a marine inflation device application in the pre-actuation configuration.
  • a low-pressure triggering mechanism is described.
  • numerous specific details such as component materials, spring constants, etc., are described in detail in order to provide a more thorough description of the present invention. It will be apparent, however, to one skilled in the art. that the present invention may be practiced without these specific details. In other instances, well-known features have not been described in detail in order not to obscure the present invention.
  • a detailed view of a first preferred embodiment of the low-pressure triggering mechanism is illustrated in Figures 1 and 2 in connection with an example of a marine inflation device. This is presented by way of example only, as the low-pressure triggering mechanism may be used in any desired application.
  • the hydraulic and pressure relief systems of the invention enable the inflation device to function in relatively shallow water without being prone to inadvertent actuation due to shock, vibration, or other transient forces experienced in ordinary use.
  • Figures 1 and 2 depict the inflation device in its pre-actuation configuration. It may be comprised of four main assemblies, each in a detachable body as shown, or in a single integrated body as fabrication techniques allow.
  • the principal assemblies, or sub-mechanisms, of the low-pressure triggering mechanism may be described as the hydrostatic mechanism, the hydraulic mechanism, and the triggering mechanism. These, together with the valve mechanism, comprise the inflation device.
  • the hydrostatic mechanism collects the actuation force from the liquid pressure medium and transmits it to the hydraulic mechanism.
  • the hydraulic mechanism multiplies the force received from the hydrostatic mechanism while buffering shock, vibration, and other transient forces therein and transmits it to the triggering mechanism.
  • the triggering mechanism receives the actuation force through the hydraulic mechanism and releases the force required to pierce the gas container and release the inflation gas.
  • the valve mechanism transmits, and regulates the flow of. the inflation gas to the flotation vessel.
  • the hydrostatic mechanism may be housed in the hydrostatic body 1 and may be comprised of the following components: a flexible hydrostatic diaphragm 2 suspended between and isolating from one another a pressure medium 3 of air, water, or other fluid and a differential chamber 4 containing air, gas, or a mixture of gases; pressure medium entry ports 5 in the hydrostatic body; a hydrostatic diaphragm plate 6 abutting the hydrostatic diaphragm in the differential chamber; a diaphragm pin 7 fastening together and sealing the hydrostatic diaphragm and hydrostatic diaphragm plate; an equalization filter 8 in the hydrostatic body connecting the differential chamber w th the pressure medium; a pressure relief port 9 in the hydrostatic body connecting the differential chamber to the pressure medium through pressure relief tubing 10 connected to one-way pressure relief valves 11 suspended at different locations in the pressure medium.
  • a flexible hydrostatic diaphragm 2 suspended between and isolating from one another a pressure medium 3 of air, water, or other fluid and a
  • the hydraulic mechanism may be housed in the hydraulic body 12 and may be comprised of the following components: a flexible hydraulic A diaphragm 13 suspended between and isolating from one another the differential chamber 4 and the hydraulic A chamber 14; a hydraulic diaphragm plate 15 abutting and sealed to the hydraulic A diaphragm by the diaphragm pin 7; a hydraulic orifice 16 connecting the hydraulic A chamber to the hydraulic B chamber 17. which is sealed by the hydraulic B diaphragm 18; a hydraulic fill port 19.
  • the triggering mechanism 21 may be housed in the triggering mechanism body 20 and may consist of a triggering mechanism such as is described in U.S. Patent 5 ,518,430 which, upon activation, drives a piercing pin 22 into the seal of the gas container 23.
  • the valve mechanism may be housed in the valve body 24 and may be comprised of a one-way inflation valve 25 which transmits the inflation gas from the gas container 23 to the flotation vessel. Operation of Low- Pressure Triggering Mechanism
  • the low-pressure triggering mechanism collects a relatively large force from a relatively low-pressure medium through the use of a flexible diaphragm, multiplies it through hydraulic action, and delivers the resultant force for, among other applications, triggering functions, without an increase in sensitivity to inadvertent actuation due to shock, vibration, and other transient forces experienced in ordinary use.
  • the low-pressure triggering mechanism functions by transmitting the force collected by the flexible hydrostatic diaphragm 2 from the pressure medium 3 through the diaphragm pin 7 to the hydraulic A diaphragm 13.
  • the force acting upon the hydraulic A diaphragm pressurizes the fluid in the hydraulic A chamber 14 and hydraulic B chamber 17, causing a resultant force on the hydraulic B diaphragm 18.
  • the relationship of the force acting upon the hydraulic A diaphragm to that acting upon the hydraulic B diaphragm is the same as the relationship of the surface areas of those diaphragms.
  • the force acting upon the hydraulic B diaphragm will be three times that acting upon the hydraulic A diaphragm and is supplied at that level for the desired application.
  • the hydraulic B chamber 17 may be controlled to prevent inadvertent actuation of the devices to which the low-pressure triggering mechanism is applied due to shock. vibration, or other transient forces.
  • the equalization filter 8 in the hydrostatic body 1 may be of a material which will admit the slow passage of air but will prevent the passage of water, enabling the equalization of the pressure within the differential chamber 4 to that in the ambient atmosphere while preventing the entry of liquid when immersed in a liquid medium, thereby preventing pressurization of the differential chamber and resistance to the movement of the hydrostatic diaphragm 2 upon, for instance, the heating of the hydrostatic body by external ambient conditions.
  • a pressure relief system in the hydrostatic body 1 creates a pressure differential which allows the passage of the air inside the differential chamber 4 out of the differential chamber upon the movement of the hydrostatic diaphragm 2 into the differential chamber in response to the pressure acting upon the hydrostatic diaphragm, thereby preventing pressurization of the differential chamber and resistance to the movement of the hydrostatic diaphragm.
  • the pressure differential is created by
  • the force acting upon the hydraulic B diaphragm 18 activates the triggering mechanism 21, releasing the force required to drive the piercing pin 22 into the gas container 23 and release the inflation gas to pass through the inflation check valve 25 into the flotation vessel.
  • FIG. 3 An alternate embodiment of the invention is illustrated in Figure 3.
  • the embodiment of Figure 3 provides an "in-line * ' configuration as opposed to the right angle configuration of Figures 1 and 2.
  • FIGs 1-3 like elements have like numbers.
  • the embodiment again consists of four subassemblies. a hydrostatic mechanism, hydraulic mechanism, triggering mechanism, and valve mechanism.
  • the hydrostatic body 1, hydraulic body 12, and triggering body 20 are now disposed substantially co-linearly so that the diaphragms of the mechanisms are now substantially perpendicular to the axis of the entire device.
  • the operation of the embodiment of Figure 3 is the same as the operation described above with respect to Figures 1 and 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

L'invention concerne un mécanisme hydraulique, qui à la fois multiplie la force d'actionnement provenant d'un support d'actionnement extérieur, et fournit une fonction tampon pour empêcher un déclenchement imprévu provoqué par un choc, une vibration, et d'autres forces transitoires. L'invention fournit également un système de libération de pression dans la chambre différentielle située derrière le diaphragme souple, de façon à empêcher une mise sous pression excessive de la chambre, ce qui pourrait gêner le déplacement du diaphragme. L'invention possède, en outre, un mécanisme de déclenchement capable d'actionner un support soumis à une basse pression sans sensibilité excessive à un déclenchement imprévu provoqué par un choc, une vibration ou d'autres forces transitoires.
PCT/US1999/015480 1998-07-10 1999-07-06 Mecanisme de declenchement basse pression WO2000002438A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU49782/99A AU4978299A (en) 1998-07-10 1999-07-06 Low-pressure triggering mechanism

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11402998A 1998-07-10 1998-07-10
US09/114,029 1998-07-10

Publications (2)

Publication Number Publication Date
WO2000002438A2 true WO2000002438A2 (fr) 2000-01-20
WO2000002438A3 WO2000002438A3 (fr) 2000-03-30

Family

ID=22352972

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/015480 WO2000002438A2 (fr) 1998-07-10 1999-07-06 Mecanisme de declenchement basse pression

Country Status (2)

Country Link
AU (1) AU4978299A (fr)
WO (1) WO2000002438A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001002244A1 (fr) * 1999-07-02 2001-01-11 Campbell Richard A Systeme de declenchement commande par pression

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515068A (en) * 1947-10-07 1950-07-11 Us Navy Fuel valve
US3008479A (en) * 1959-02-10 1961-11-14 Altair Inc Valves
US4230140A (en) * 1979-01-15 1980-10-28 Under Sea Industries, Inc. Environmental first stage scuba regulator
US5419725A (en) * 1993-08-17 1995-05-30 Deep Six Enterprises, Inc. Triggering mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515068A (en) * 1947-10-07 1950-07-11 Us Navy Fuel valve
US3008479A (en) * 1959-02-10 1961-11-14 Altair Inc Valves
US4230140A (en) * 1979-01-15 1980-10-28 Under Sea Industries, Inc. Environmental first stage scuba regulator
US5419725A (en) * 1993-08-17 1995-05-30 Deep Six Enterprises, Inc. Triggering mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001002244A1 (fr) * 1999-07-02 2001-01-11 Campbell Richard A Systeme de declenchement commande par pression
US6561863B1 (en) 1999-07-02 2003-05-13 Richard A. Campbell Pressure actuated triggering system

Also Published As

Publication number Publication date
WO2000002438A3 (fr) 2000-03-30
AU4978299A (en) 2000-02-01

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