CA2004338A1 - Pressure regulator type airflow control system with integral pump and housing - Google Patents

Pressure regulator type airflow control system with integral pump and housing

Info

Publication number
CA2004338A1
CA2004338A1 CA2004338A CA2004338A CA2004338A1 CA 2004338 A1 CA2004338 A1 CA 2004338A1 CA 2004338 A CA2004338 A CA 2004338A CA 2004338 A CA2004338 A CA 2004338A CA 2004338 A1 CA2004338 A1 CA 2004338A1
Authority
CA
Canada
Prior art keywords
housing
control system
pressure regulator
airflow control
air
Prior art date
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.)
Granted
Application number
CA2004338A
Other languages
French (fr)
Other versions
CA2004338C (en
Inventor
Nozomu Kawasaki
Terence A. Scott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leggett and Platt Inc
Original Assignee
Leggett and Platt 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 Leggett and Platt Inc filed Critical Leggett and Platt Inc
Publication of CA2004338A1 publication Critical patent/CA2004338A1/en
Application granted granted Critical
Publication of CA2004338C publication Critical patent/CA2004338C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/10—Fluid mattresses or cushions with two or more independently-fillable chambers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/081—Fluid mattresses or cushions of pneumatic type
    • A47C27/082—Fluid mattresses or cushions of pneumatic type with non-manual inflation, e.g. with electric pumps
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/081—Fluid mattresses or cushions of pneumatic type
    • A47C27/083—Fluid mattresses or cushions of pneumatic type with pressure control, e.g. with pressure sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/0404—Control of fluid pressure without auxiliary power with two or more controllers mounted in parallel
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
    • G05D16/0644—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator
    • G05D16/0655—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using one spring-loaded membrane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2605—Pressure responsive
    • Y10T137/2607—With pressure reducing inlet valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7784—Responsive to change in rate of fluid flow
    • Y10T137/7785—Valve closes in response to excessive flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y10T137/7794—With relief valve

Abstract

A housing containing an air pump and an air pressure supply system for supplying air to a body support, such as an air mattress. The housing contains, in addition to the air pump, diaphragm type pressure regulators and diaphragm type surge check valves, as well as passageways and pressure chambers for interconnecting the pump to the pressure regulators and surge check valves.
CA 2004338 1988-10-12 1989-11-30 Pressure regulator type airflow control system with integral pump and housing Expired - Fee Related CA2004338C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/256,902 US4982466A (en) 1988-10-12 1988-10-12 Body support system
US07/278,191 US4986738A (en) 1988-10-12 1988-11-30 Airflow control system pump and housing
US278,191 1988-11-30

Publications (2)

Publication Number Publication Date
CA2004338A1 true CA2004338A1 (en) 1990-05-31
CA2004338C CA2004338C (en) 1996-10-01

Family

ID=43643173

Family Applications (3)

Application Number Title Priority Date Filing Date
CA 2127722 Expired - Fee Related CA2127722C (en) 1988-10-12 1989-10-12 Body support system
CA 2000534 Expired - Fee Related CA2000534C (en) 1988-10-12 1989-10-12 Body support system
CA 2004338 Expired - Fee Related CA2004338C (en) 1988-10-12 1989-11-30 Pressure regulator type airflow control system with integral pump and housing

Family Applications Before (2)

Application Number Title Priority Date Filing Date
CA 2127722 Expired - Fee Related CA2127722C (en) 1988-10-12 1989-10-12 Body support system
CA 2000534 Expired - Fee Related CA2000534C (en) 1988-10-12 1989-10-12 Body support system

Country Status (10)

Country Link
US (2) US4982466A (en)
EP (2) EP0440690A4 (en)
JP (1) JP2823289B2 (en)
AT (1) ATE140371T1 (en)
AU (2) AU626598B2 (en)
CA (3) CA2127722C (en)
DE (1) DE68926863T2 (en)
ES (2) ES2016524A6 (en)
MX (1) MX173145B (en)
WO (1) WO1990003750A1 (en)

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EP0606126B1 (en) 1996-07-17
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CA2127722C (en) 1995-07-25
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US4982466A (en) 1991-01-08
CA2000534A1 (en) 1990-04-12
WO1990003750A1 (en) 1990-04-19
JPH04501074A (en) 1992-02-27
ATE140371T1 (en) 1996-08-15
EP0440690A4 (en) 1992-03-11
CA2000534C (en) 1994-12-13
AU4409189A (en) 1990-05-01
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DE68926863T2 (en) 1997-02-27
EP0606126A2 (en) 1994-07-13
CA2004338C (en) 1996-10-01
ES2017048A6 (en) 1990-12-16
AU2288092A (en) 1992-12-24
AU637954B2 (en) 1993-06-10
CA2127722A1 (en) 1990-04-13
ES2016524A6 (en) 1990-11-01
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US4986738A (en) 1991-01-22
EP0440690A1 (en) 1991-08-14

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