SE0200243L - Touch-independent clamp protection device for motor-driven furniture - Google Patents

Touch-independent clamp protection device for motor-driven furniture

Info

Publication number
SE0200243L
SE0200243L SE0200243A SE0200243A SE0200243L SE 0200243 L SE0200243 L SE 0200243L SE 0200243 A SE0200243 A SE 0200243A SE 0200243 A SE0200243 A SE 0200243A SE 0200243 L SE0200243 L SE 0200243L
Authority
SE
Sweden
Prior art keywords
motor
twin conductor
thin
alternating current
safety device
Prior art date
Application number
SE0200243A
Other languages
Swedish (sv)
Other versions
SE519289C2 (en
SE0200243D0 (en
Inventor
Bjoern Erik Clausen
Original Assignee
Artektron Ab
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 Artektron Ab filed Critical Artektron Ab
Priority to SE0200243A priority Critical patent/SE519289C2/en
Publication of SE0200243D0 publication Critical patent/SE0200243D0/en
Publication of SE0200243L publication Critical patent/SE0200243L/en
Publication of SE519289C2 publication Critical patent/SE519289C2/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
    • A47C20/04—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination
    • A47C20/041—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination by electric motors
    • 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
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/015—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame divided into different adjustable sections, e.g. for Gatch position
    • 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
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/018—Control or drive mechanisms
    • 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
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/12—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine

Landscapes

  • Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Elimination Of Static Electricity (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

The safety device comprises a twin conductor with two input conductors formed by thin, electrically conducting metal strips lying side by side or symmetrically one above the other. The strips are separated by a thin, insulating dielectric medium. When the motor is activated, the conductors are connected to a weak low voltage alternating current, which flows around, over and along the free sides of the twin conductor to create a symmetrical capacitive alternating current field. The symmetry, capacitance and integrity of this field are locally altered (9) if a body part or finger (8) with an intrinsic capacitance approaches the region (10) where there is a risk of it becoming trapped or comes into direct contact with the twin conductor. This variation is processed using standard electronic techniques, so that the motor is immediately stopped and/or put into reverse. The automatic safety device can be secured to any dangerous surface on the fixed and/or movable sections (7) of the furniture.
SE0200243A 2002-01-29 2002-01-29 Safety device for preventing fingers being trapped in furniture with motor driven components, comprises twin conductor generating capacitive electric field SE519289C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE0200243A SE519289C2 (en) 2002-01-29 2002-01-29 Safety device for preventing fingers being trapped in furniture with motor driven components, comprises twin conductor generating capacitive electric field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0200243A SE519289C2 (en) 2002-01-29 2002-01-29 Safety device for preventing fingers being trapped in furniture with motor driven components, comprises twin conductor generating capacitive electric field

Publications (3)

Publication Number Publication Date
SE0200243D0 SE0200243D0 (en) 2002-01-29
SE0200243L true SE0200243L (en) 2003-02-11
SE519289C2 SE519289C2 (en) 2003-02-11

Family

ID=20286790

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0200243A SE519289C2 (en) 2002-01-29 2002-01-29 Safety device for preventing fingers being trapped in furniture with motor driven components, comprises twin conductor generating capacitive electric field

Country Status (1)

Country Link
SE (1) SE519289C2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10197609B2 (en) 2012-01-09 2019-02-05 L&P Property Management Company Capacitive sensing for automated furniture
US10048662B2 (en) 2012-01-09 2018-08-14 L&P Property Management Company Characterization and calibration for automated furniture
US10197259B2 (en) 2012-01-09 2019-02-05 L&P Property Management Company Standalone capacitance sensor for furniture
US9337831B2 (en) 2012-01-09 2016-05-10 L&P Property Management Company Capacitive wire sensing for furniture
US10334960B2 (en) 2012-01-09 2019-07-02 L&P Property Management Company Drop-in occupancy detection component for furniture
US10555615B2 (en) 2012-01-09 2020-02-11 L&P Property Management Company Calibration of detection features for automated furniture
US9528812B2 (en) 2012-01-09 2016-12-27 L&P Property Management Company Capacitive wire sensing for furniture
WO2014165528A1 (en) * 2013-04-01 2014-10-09 L & P Property Management Company Occupancy detection for furniture
EP3610840A1 (en) * 2018-08-14 2020-02-19 Gymna Uniphy Treatment couch with safety improvement

Also Published As

Publication number Publication date
SE519289C2 (en) 2003-02-11
SE0200243D0 (en) 2002-01-29

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Legal Events

Date Code Title Description
NUG Patent has lapsed
NUG Patent has lapsed