GB2538830A - Preventing nightlatched door closing before removing key - Google Patents

Preventing nightlatched door closing before removing key Download PDF

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Publication number
GB2538830A
GB2538830A GB1601833.5A GB201601833A GB2538830A GB 2538830 A GB2538830 A GB 2538830A GB 201601833 A GB201601833 A GB 201601833A GB 2538830 A GB2538830 A GB 2538830A
Authority
GB
United Kingdom
Prior art keywords
key
bolt
preventing
door
solenoid
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
GB1601833.5A
Other versions
GB2538830A9 (en
GB201601833D0 (en
GB2538830B (en
Inventor
Kenneth Lacey Charles
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1601833.5A priority Critical patent/GB2538830B/en
Priority claimed from GB1401556.4A external-priority patent/GB2522633A/en
Publication of GB201601833D0 publication Critical patent/GB201601833D0/en
Publication of GB2538830A publication Critical patent/GB2538830A/en
Publication of GB2538830A9 publication Critical patent/GB2538830A9/en
Application granted granted Critical
Publication of GB2538830B publication Critical patent/GB2538830B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B45/00—Alarm locks
    • E05B45/06—Electric alarm locks
    • E05B45/0605—Electric alarm locks for preventing of leaving the key
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B45/00—Alarm locks
    • E05B45/06—Electric alarm locks
    • E05B45/08—Electric alarm locks with contact making inside the lock or in the striking plate
    • E05B45/10—Electric alarm locks with contact making inside the lock or in the striking plate by introducing the key or another object
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
    • E05B47/0003—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core
    • E05B47/0004—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core said core being linearly movable
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/02—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means
    • E05B47/026—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means the bolt moving rectilinearly
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
    • E05C17/02—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means
    • E05C17/04—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)

Abstract

A nightlatch is provided with an internal spring clip located inside the key cylinder with the spring clip and the key cylinder housing being electrically isolated and forming opposing terminals of a low voltage solenoid 4, such that when a key is inserted it completes the circuit and activates the solenoid causing a bolt 3 to project outwards and engages with the striker plate 5. The bolt engaging with the door frame prevents the door closing until the key is withdrawn which breaks the circuit allowing the bolt to return to neutral (retracted position).

Description

Preventing night-latched door closing before removing key This invention relates to a means of preventing a night-latched door from closing without firstly removing the key.
Homes are often burgled, and cars etc stolen as a result of a keyholder entering a premises, then closing the door without withdrawing the key, thus providing an opportunity for any passing thief.
According to the present invention, there is provided a means of preventing a night-latched door, once opened, from subsequently being closed until the key is withdrawn.
A specific embodiment of the invention will now be described with the aid of the enclosed drawings in which-Drg 1 shows the mechanism required within the lock cavity, and Drg 2 shows the requirements on the inner face of the door.
Description
Drg 1 fig 1 shows a longitudinal section thro a typical cylinder lock with tumblers etc omitted and key withdrawn comprising-cylinder housing 1, cylinder 2, and turning bar 3 which projects thro into the latch casing. Spring clip 4 is secured to, but insulated from the inner end of the cylinder. Latchkey 5 (fig 2) terminates in a plain flat portion 6 which engages with th spring clip when the key inserted to it's operating depth. The spring clip and the housing are wired to the opposing terminals of a low voltage solenoid on the inner face of the door. Inserting the key in the cylinder completes the curcuit via spring clip/key/cylinder and housing, thus activating the solenoid, which remains activated until the key is withdrawn. Fig 3 shows a cross section thro A-A, and 4 details of the spring clip.
13eferring to Drg 2-Fig 1 shows the inner face of entrance door, comprising-door 1 and frame 2. Bolt 3 is housed within solenoid 4. the bolt is projected outwards upon activation of the solenoid as described above. The bolt in fig 1 is shown in the neutral (de-activated) position.
Fig 2 shows a sectional plan view with the solenoid activated and the bolt partly projected, but arrested by making contact with striker plate 5, secured to the frame. Fig 3 shows a further plan view with the door slightly opened, the bolt fully extended beyond the face of the striker plate, preventing the door being closed until the key is withdrawn, allowing the bolt to return to neutral.

Claims (3)

  1. Claims 1 A system whereby a night-latched door is prevented from closing until the key is removed, comprising-a nightlatch provided with a spring clip, a key, which when engaged with the clip, causes a solenoid-enabled bolt to project beyond the frame rebate, preventing the door, once opened, from closing by a striking plate.
  2. 2 A system as specified in claim 1, combined with a visual or audible alarm unit, activated by the same means as the solenoid.
  3. 3 A system as specified in claim 1, substantially as the enclosed description and drawings.
GB1601833.5A 2014-01-30 2014-01-30 Preventing night-latched door closing before removing key Expired - Fee Related GB2538830B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1601833.5A GB2538830B (en) 2014-01-30 2014-01-30 Preventing night-latched door closing before removing key

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1601833.5A GB2538830B (en) 2014-01-30 2014-01-30 Preventing night-latched door closing before removing key
GB1401556.4A GB2522633A (en) 2014-01-30 2014-01-30 Preventing entry via nightlatch without removing key

Publications (4)

Publication Number Publication Date
GB201601833D0 GB201601833D0 (en) 2016-03-16
GB2538830A true GB2538830A (en) 2016-11-30
GB2538830A9 GB2538830A9 (en) 2017-03-15
GB2538830B GB2538830B (en) 2017-08-23

Family

ID=55590531

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1601833.5A Expired - Fee Related GB2538830B (en) 2014-01-30 2014-01-30 Preventing night-latched door closing before removing key

Country Status (1)

Country Link
GB (1) GB2538830B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU182731U1 (en) * 2018-01-09 2018-08-29 Владимир Сергеевич Гапонцев SIGNAL DEVICE FOR LOCK OPENING CONTROL

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2249294A (en) * 1940-02-09 1941-07-15 Kohler Erwin Device for preventing the unintentional shutting of doors
US3986376A (en) * 1975-04-01 1976-10-19 Sigo Lack Lock
WO1997015034A1 (en) * 1995-10-19 1997-04-24 Guim R Key sensor alarm for door locks
DE29806266U1 (en) * 1998-04-06 1998-07-02 Böllert, Julia, 32694 Dörentrup Locking device
WO2001020109A1 (en) * 1999-09-15 2001-03-22 Stephan Endler Device for preventing the locking of a door
DE102008034340A1 (en) * 2008-07-23 2010-01-28 Hammerl, Günter Device for locking door in closed room, has door blocking device locking door lock in operating condition, where blocking device blocks and unblocks transfer of door from opened condition into closed condition of door

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2249294A (en) * 1940-02-09 1941-07-15 Kohler Erwin Device for preventing the unintentional shutting of doors
US3986376A (en) * 1975-04-01 1976-10-19 Sigo Lack Lock
WO1997015034A1 (en) * 1995-10-19 1997-04-24 Guim R Key sensor alarm for door locks
DE29806266U1 (en) * 1998-04-06 1998-07-02 Böllert, Julia, 32694 Dörentrup Locking device
WO2001020109A1 (en) * 1999-09-15 2001-03-22 Stephan Endler Device for preventing the locking of a door
DE102008034340A1 (en) * 2008-07-23 2010-01-28 Hammerl, Günter Device for locking door in closed room, has door blocking device locking door lock in operating condition, where blocking device blocks and unblocks transfer of door from opened condition into closed condition of door

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU182731U1 (en) * 2018-01-09 2018-08-29 Владимир Сергеевич Гапонцев SIGNAL DEVICE FOR LOCK OPENING CONTROL

Also Published As

Publication number Publication date
GB2538830A9 (en) 2017-03-15
GB201601833D0 (en) 2016-03-16
GB2538830B (en) 2017-08-23

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20180130