GB1167720A - An improved safety device for a door lock on washing machines - Google Patents

An improved safety device for a door lock on washing machines

Info

Publication number
GB1167720A
GB1167720A GB56614/67A GB5661467A GB1167720A GB 1167720 A GB1167720 A GB 1167720A GB 56614/67 A GB56614/67 A GB 56614/67A GB 5661467 A GB5661467 A GB 5661467A GB 1167720 A GB1167720 A GB 1167720A
Authority
GB
United Kingdom
Prior art keywords
drum
speed
door lock
contacts
motor
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.)
Expired
Application number
GB56614/67A
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.)
Holzer Patent AG
Original Assignee
Holzer Patent AG
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 Holzer Patent AG filed Critical Holzer Patent AG
Publication of GB1167720A publication Critical patent/GB1167720A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/08—Control circuits or arrangements thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • 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
    • F16P3/08—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 in connection with the locking of doors, covers, guards, or like members giving access to moving machine parts
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/24—Spin speed; Drum movements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/44—Opening, closing or locking of doors
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48—Drum speed
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Centrifugal Separators (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

1,167,720. Machinery safety devices. HOLZER-PATENT A.G. 13 Dec., 1967 [29 Dec., 1966], No. 56614/67. Heading F2J. [Also in Division G3] To prevent the door of a washing machine from being opened while the drum is rotating, the energizing circuit of an electromagnetic door lock 3 includes transistor switches responsive to the drum's speed of rotation. The same switching devices also form part of a speed control circuit for the drive motor 5 of the machine (see Division G3). A tacho-generator 6 driven from the motor 5 or from the drum of the machine provides a speed-related voltage which is rectified by a diode D1 and compared with a reference voltage from a voltage divider 9, 10, 11 by a differential amplifier including transistors T2, T3, the amplifier output controlling a switching amplifier T1 for a power semi-conductor 2 supplying the motor 5 and/or the door lock 3. The circuit includes manually or programme controlled contacts 12-15. When the drum is to be stopped, contacts 12, 13 are closed and contacts 14, 15 opened. When the speed-related voltage falls below a low reference voltage (from contact 12), the semi-conductor 2 is rendered conductive to allow energization of the latch 3 by closing a push-button contact 4.
GB56614/67A 1966-12-29 1967-12-13 An improved safety device for a door lock on washing machines Expired GB1167720A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH0061426 1966-12-29

Publications (1)

Publication Number Publication Date
GB1167720A true GB1167720A (en) 1969-10-22

Family

ID=7161399

Family Applications (1)

Application Number Title Priority Date Filing Date
GB56614/67A Expired GB1167720A (en) 1966-12-29 1967-12-13 An improved safety device for a door lock on washing machines

Country Status (3)

Country Link
DE (1) DE1585730B2 (en)
FR (1) FR1553999A (en)
GB (1) GB1167720A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008148788A2 (en) * 2007-06-05 2008-12-11 Arcelik Anonim Sirketi A washer/dryer
WO2016013037A1 (en) * 2014-07-21 2016-01-28 Bitron S.P.A. Door-lock system for household appliance provided with such system and operation method thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2928507C2 (en) * 1979-07-14 1982-06-09 Trützschler GmbH & Co KG, 4050 Mönchengladbach Safety locking device for foldable or removable protective cover parts of machines
IT1267583B1 (en) * 1994-09-13 1997-02-07 Zanussi Elettrodomestici LAUNDRY WASHING MACHINE WITH PERFECTED COMMAND AND CONTROL DEVICES

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008148788A2 (en) * 2007-06-05 2008-12-11 Arcelik Anonim Sirketi A washer/dryer
WO2008148788A3 (en) * 2007-06-05 2009-04-09 Arcelik As A washer/dryer
WO2016013037A1 (en) * 2014-07-21 2016-01-28 Bitron S.P.A. Door-lock system for household appliance provided with such system and operation method thereof
US11001959B2 (en) 2014-07-21 2021-05-11 Bitron S.P.A. Door-lock system for household appliance provided with such system and operation method thereof

Also Published As

Publication number Publication date
FR1553999A (en) 1969-01-17
DE1585730A1 (en) 1972-03-09
DE1585730B2 (en) 1974-02-07

Similar Documents

Publication Publication Date Title
GB1167720A (en) An improved safety device for a door lock on washing machines
GB1131352A (en) Improvements relating to motor control circuits
GB1380995A (en) Electrical circuit for controlling a commutatorless direct-current electrical motor
GB1169059A (en) An Arrangement of Pole-Changing Motors in Washing Machines
GB929720A (en) Improvements in or relating to the driving of crockery holders in dish-washing machines
GB1178291A (en) Washing and Centrifugal Machine, Dish-Washer or the like.
GB1178761A (en) Washing and Centrifugal Machines and Dishwashers
GB984706A (en) Apparatus controlling the speed of direct current motors
GB1063759A (en) Laundry machine
SE314649B (en)
GB1129979A (en) Drives for spinning machinery
GB1221332A (en) Circuit arrangement primarily for programme control of fully automatic washing machines
GB1199469A (en) Speed Control of Multi-Speed Induction Motors.
GB1117007A (en) Improvements in and relating to d.c. motor control circuits
GB1079525A (en) Speed control system for centrifuge motors and the like
GB1140921A (en) Circular knitting machines
GB1097042A (en) Electric drive unit
GB991071A (en) Speed stabilization for d.c. motors, more particularly for phonograph recorders
GB1042568A (en) Method of and circuit arrangement for regulating a machine for disintegrating continuously fed stock
GB1422236A (en) Speed control circuit
GB979170A (en) Improvements relating to washing and spin-drying machines
GB1274205A (en) Control circuits for clothes washing and spin-drying machines
GB581321A (en) Improvements in or relating to automatic feeding devices for tenter frames and like machines
JPS57180381A (en) Braking circuit for motor
GB762213A (en) Combined centrifuge fruit press and mixer

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PLNP Patent lapsed through nonpayment of renewal fees