AU2012214107A1 - Latch for gates and doors - Google Patents

Latch for gates and doors Download PDF

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Publication number
AU2012214107A1
AU2012214107A1 AU2012214107A AU2012214107A AU2012214107A1 AU 2012214107 A1 AU2012214107 A1 AU 2012214107A1 AU 2012214107 A AU2012214107 A AU 2012214107A AU 2012214107 A AU2012214107 A AU 2012214107A AU 2012214107 A1 AU2012214107 A1 AU 2012214107A1
Authority
AU
Australia
Prior art keywords
latching element
latch according
latch
pull knob
closed position
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
AU2012214107A
Other versions
AU2012214107B2 (en
Inventor
Audrius Macernis
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.)
Safetech Ip Pty Ltd
Original Assignee
Safetech Ip Pty Ltd
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
Priority claimed from AU2011900410A external-priority patent/AU2011900410A0/en
Application filed by Safetech Ip Pty Ltd filed Critical Safetech Ip Pty Ltd
Priority to AU2012214107A priority Critical patent/AU2012214107B2/en
Publication of AU2012214107A1 publication Critical patent/AU2012214107A1/en
Application granted granted Critical
Publication of AU2012214107B2 publication Critical patent/AU2012214107B2/en
Assigned to CAPRICORN GLOBAL GROUP PTY LTD, DAZCORP PTY LTD, ELEINVEST (QLD) PTY LTD reassignment CAPRICORN GLOBAL GROUP PTY LTD Request for Assignment Assignors: MACERNIS, AUDRIUS
Assigned to Safetech IP Pty Ltd reassignment Safetech IP Pty Ltd Request for Assignment Assignors: CAPRICORN GLOBAL GROUP PTY LTD, DAZCORP PTY LTD, ELEINVEST (QLD) PTY LTD
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C3/00—Fastening devices with bolts moving pivotally or rotatively
    • E05C3/12—Fastening devices with bolts moving pivotally or rotatively with latching action
    • E05C3/16—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
    • E05C3/22—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the bolt being spring controlled
    • E05C3/30—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the bolt being spring controlled in the form of a hook
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B13/00—Devices preventing the key or the handle or both from being used
    • E05B13/002—Devices preventing the key or the handle or both from being used locking the handle
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B65/00—Locks or fastenings for special use
    • E05B65/0007—Locks or fastenings for special use for gates
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B1/00—Knobs or handles for wings; Knobs, handles, or press buttons for locks or latches on wings
    • E05B1/0007—Knobs
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B9/00—Lock casings or latch-mechanism casings ; Fastening locks or fasteners or parts thereof to the wing
    • E05B9/02—Casings of latch-bolt or deadbolt locks

Landscapes

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

Abstract

A latch for a gate or door having a striker pin mounted thereto, including: a) a housing; b) at least one latching element mounted within the housing and adapted to engage with the striker pin, the latching element being displaceable between a closed position in which the striker pin is retained by the latching element to prevent opening of the gate or door, and an open position in which the striker pin is released; and c) a pull knob operable under a pulling force to displace the latching element from its closed position towards its open position.

Description

WO 2012/106764 PCT/AU2012/000120 LATCH FOR GATES AND DOORS 5 Field of the Invention This invention relates to latches for gates or doors, which can be used to secure a door or gate in a closed position. 10 Background to the Invention Various types of latching devices have been proposed or used for retaining gates or doors in a closed position. Such latches may be of the type where a latching element is urged to a closed position where it retains a striker pin attached to a door or gate to 15 prevent opening of the door or gate. Latches of this type may be encased in a housing in order to protect the latch mechanism from exposure to the elements, and may include means for locking the latching element in a closed position. Such latches often have attached to the latching element a tab, which may be lifted by 20 an operator's finger to move the latching element to an open position. Such arrangements may be seen in, for example, Australian Patent No. 775134, and WO 2007/087677. While this is a simple and effective method of opening the latch, it does present problems. In particular, an arrangement of this sort requires an open slot in the top of the housing to allow for movement of the tab. This upwardly facing 25 slot may allow the entry of water or debris into the latch arrangement, causing rusting or other damage or deterioration to the latch mechanism. Accordingly, it is desirable to provide a latch including a housing which has an alternative opening arrangement which does not require an upwardly facing slot. 30 Such a latch would be less susceptible to damage from environmental hazards entering the housing and interfering with the operation of the latch.
WO 2012/106764 PCT/AU2012/000120 2 Summary of the Invention According to one aspect of the invention, there is provided a latch for a gate or door having a striker pin mounted thereto, including: 5 a) a housing; b) at least one latching element mounted within the housing and adapted to engage with the striker pin, the latching element being displaceable between a closed position in which the striker pin is retained by the latching element to prevent opening of the gate or door, and an open position in which the striker to pin is released; and c) a pull knob operable under a pulling force to displace the latching element from its closed position towards its open position. Preferably, the latching element is urged towards it closed position, and the operation 15 of the pull knob displaces the latching element against said urging. Conveniently, the latch is urged towards it closed position under the force of gravity, as this provides a simple and reliable arrangement. However the latch may be urged towards its closed position by a biasing means. 20 The latching element may be pivotally mounted within the housing, and may have a leading surface which is shaped to deflect the latching element towards its open position when impacted by a striker pin. Such an arrangement means that the latch is able to receive the striker pin as the gate or door closes without requiring an operator to open the latch. 25 Preferably, there are two latching elements, and each latching element is displaceable independently of the other latching element This provides increased security and reliability, and may also enhance the visual appeal of the latch. 30 For additional security, the latch may minde a locking element, the locking element being displaceable between a locked position in which it retains the latching element WO 2012/106764 PCT/AU2012/000120 3 in its closed position, and an unlocked position in which the latching element is permitted to move between the open and closed positions. Preferably, the latch also includes a key operated element for displacing the locking s element between its locked an unlocked positions. The locking element may include a rotatable cam having a flat surface on a first side, and a raised shoulder on a second side, and the flat surface and the raised shoulder may be approximately 90 degrees apart. This provides a relatively simple and 1o effective means of engaging and releasing the latch element. The key operated element may take the form of a cylinder lock, and may be mounted within the pull knob. 15 Preferably, the latch includes an activator, wherein the activator is connected to the pull knob such that when the pull knob is pulled, the activator is displaced in the same direction as the pull knob, and a surface of the activator engages with a surface of the latching element to displace the latching element towards its open position. 20 For convenient operation, the pull knob may be sized to be easily gripped by a human hand, and may further be provided with shoulders to enhance gripability The latch may further include a mounting bracket for mounting the latch on an assembly associated with a gate or door. Preferably the mounting bracket is slidably 25 connected to the housing, which allows for the mounting bracket to be attached for left or right handed mounting. In a further aspect of the invention, there is provided a latch assembly, including a latch as set out above, and a striker pin capable of being mounted on a door or gate.
WO 2012/106764 PCT/AU2012/000120 4 Brief Description of the Drawinp Figure 1 is a front view of a latch according to one embodiment of the invention; 5 Figure 2 is a side view of the latch of Figure 1; Figure 2a is a top view of the latch of Figure 1; Figure 3 is a side view of the internal assembly of the latch of Figure 1; Figure 4 is a rear view of the assembly of Figure 3, with partial cross-section along line A-A; 10. Figure 5 shows two views of the latching element from the latch of Figure 1; Figure 6 shows six views of the locking element from the latch of Figure 1; including a sectional view through line A-A; Figure 7 shows seven views of the activator element from the latch of Figure 1; 15 Figures Ba and Bb show perspective views of the pull knob; Figure 8c is a front view of the pull knob; Figure 8d is a rear view of the pull knob; Figure 8 is a cross sectional view through line A-A on Figure 9d; Figure 8f is a cross sectional view through line B-B on Figure Sd; 20 Figure 8g is a top view of the pull knob; Figure 8h is a side view of the pull knob; Figure 9 shows various views of a mounting bracket for the latch including a sectional taken through line A-A; Figure 10 shows a view of the latch plus sectional views along line A-A, B-B, 25 and C-C. Description of Preferred Embodiment Referring to Figure 1 a preferred embodiment of a latch according to the invention su includes a housing 10 anacaed to a mounting bracket 11. At least one latching element 12 is displaceably mounted in the housing 10. For increased security and visual appeal, preferably two latching elements are provided, which are each WO 2012/106764 PCT/AU2012/000120 5 displaceable independently of one another. Referring to Figure 2, the latching element or elements 12 are positioned across a recess 13. The latching element 12 is shown in a closed position. When the latching element 13 is displaced upwardly towards an open position, a striker pin attached to a gate or door (not shown) may s enter the recess 13. When the latching element 12 returns to its closed position, the striker pin is retained between the latching element 12 and the recess 13, preventing opening of the gate or door until the latching element 12 is displaced to an open position to release the striker pin. 1o The latch also includes a pull knob 18 and key operated element 20. Preferably, the key operated element is in the form of a cylinder lock. The key operated element may take any suitable position on the housing, however conveniently it may be positioned within the pull knob 20. 15 Referring to Figure 3, the latching element 12 is of a hook shape and is pivotally mounted on a pin 22, allowing the latching element to rotate between an open and closed position. Pull knob 18 is connected to an activator 16, such that when pull knob 18 is pulled in the direction 19, the activator 16 causes the latching element to rotate in the direction 17 towards the open position. Preferably a biasing means in the 20 form of a return spring 28 is provided to bias the pull knob and activator arrangement to the position shown in Figure 2, thereby allowing the latching element to return to its closed position upon release of the pull knob 18. A locking element 14 is provided, which is connected to the key operated element 20, 25 such that upon operation of the key operated element 20, the locking element is displaced to a locked position to retain the latching element 12 in its closed position. Preferably, the locking element is a rotatable cam member, further details of which will be described later in this specification. 30 Figure 4 shows a rear view of the arrangement of Figure 3. The pin 22 is positioned in the housing by a pair of pin locators 26, and the latching elements are spaced apart on the pin by means of a pin spacer 24.
WO 2012/106764 PCT/AU2012/000120 6 Figure 5 shows the latching element 12, which is provided with a pin hole 30 for receiving the pin 22. Preferably the latching element is designed to have d centre of gravity 31 positioned laterally from the pin hole 30, such that the latching element s falls to a closed position as shown in Figure 2 under the force of gravity. It will be appreciated that other arrangements achieving this result are also possible, for example, such as by urging the latching element towards a closed position by use of a biasing means, such as a spring, and such arrangements are to be understood as being included in the invention in its broadest form. The latching element has a leading to surface 32 which is shaped to deflect the latching element upwardly when impacted by a striker pin, thereby admitting the striker pin into the recess 13. Once the striker pin enters the recess 13, the latching element 12 falls back to its closed position. The striker pin is then retained in the recess 13 by the retaining surface 34. 15 Referring to Figure 6, the rotatable cam 14 which forms the locking element has a flat surface 40 on one side, and a shoulder 42 on a second side approximately 90 degrees from the flat surface. When in the locked position, the shoulder 42 of the cam faces upwards and prevents motion of the edge 36 of the latching element 12 (as seen in Figure 5) past the looking element. When the key operated element is operated, the 20 cam 14 is rotated 90 degrees to an unlocked position where the flat surface 40 faces upwards. The edge 36 of the latching element 12 is then freed, allowing the latching element 12 to rotate to its open position. Figure 7 shows the activator 16. When the pull knob 18 is pulled, the activator 16 is 25 displaced in the same direction as the pull knob, and surface 46 presses against surface 3g of the latching element 12 (as seen in Figure 5). When the cam 14 is in the unlocked position, this causes the latching element 12 to rotate towards an open position. 30 Figur a, 8 b ad 8o show the pun Enob I9. Proterablythepull knob is sized to be easily gripped by a human hand, and provided with shoulders 4g to improve gripability. The pull knob 18 may also be formed with a cavity 50 extending through WO 2012/106764 PCT/AU2012/000120 7 the length of the knob to allow the key operated element 20 to be mounted within the pull knob. By providing a latch arrangement with a pull knob as described above, the actuator 5 for opening the latch is provided on the front surface of the latch, and there are very few gaps in the housing to allow water, dust or other environmental hazards to enter the housing. This reduces the risk of the damage or deterioration of the latch mechanism due to clogging or rusting. 10 Figure 9 shows a top view of the mounting bracket 11 for mounting the latch on an assembly associated with a gate or door, such as a gate post or door frame. The mounting bracket 11 is provided with a plate 52 with shoulders 54. .Referring to Figure 10, the housing 10 has at Its rear a recess 56 configured to slidably receive the plate 52. In this manner, the mounting bracket 11 may be attached to the housing 10 Is by sliding the plate 52 of the bracket 11 into the recess 56 of the housing 10. This allows the same bracket to be conveniently be attached to the housing in either a left or right handed orientation, and also allows the orientation to be easily switched by sliding the bracket out of the housing, inverting the bracket, and reinserting the bracket into the housing. 20 In a further embodiment, there may be provided a latch assembly including a latch as described above, and a striker pin that is capable of being mounted on a gate or door.

Claims (19)

1. A latch for a gate or door having a striker pin mounted thereto, including. a) a housing; 5 b) at least one latching element mounted within the housing and adapted to engage with the striker pin, the latching element being displaceable between a closed position in which the striker pin is retained by the latching element to prevent opening of the gate or door, and an open position in which the striker pin is released; and to c) a pull knob operable under a pulling force to displace the latching element from its closed position towards its open position.
2. A latch according to claim 1, wherein the latching element is urged towards its closed position, and the operation of the pull knob displaces the latching element 15 against said urging.
3. A latch according to claim 2, wherein the latching element is urged towards its closed position under the force of gravity. 20
4. A latch according to claim 2, wherein the latching element is urged towards its closed position by a biasing means.
5. A latch according to any preceding claim, wherein the latching element is pivotally mounted within the housing. 25
6. A latch according to any preceding claim, wherein the latching element has a leading surface which is shaped to deflect the latching element towards its open position when impacted by a striker pin. -3-7.- A latdty engclaim wherein there are two latching elements, and each latching element is displaceable independently of the other latching element.
WO 2012/106764 PCT/AU2012/000120 9
8. A latch according to any preceding claim, further including a locking element, the locking element being displaceable between a locked position in which it retains the latching element in its closed position, and an unlocked position in which the s latching element is permitted to move between the open and closed positions.
9. A latch according to claim 8, further including a key operated element for displacing the locking element between its looked an unlocked positions.
10 10. A latch according to either claim 8 or 9 wherein the looking element includes a rotatable cam having a flat surface on a first side, and a raised shoulder on a second side.
11. A latch according to claim 10 wherein the flat surface and the raised shoulder is are approximately 90 degrees apart.
12. A latch according to any one of claim 9 to 11 wherein the key operated element is a cylinder lock. 20
13. A latch according to any one of claims 9 to 12 wherein the key operated element is mounted within the pull knob.
14. A latch according to any preceding claim, further including an activator, wherein the activator is connected to the pull knob such that when the pull knob is 25 pulled, the activator is displaced in the same direction as the pull knob, and a surface of the activator engages with a surface of the latching element to displace the latching element towards it open position.
15. A latch according to any preceding claim wherein the pull knob is sized to be 30 cusily gripped by a human hand. WO 2012/106764 PCT/AU2012/000120 10
16. A latch according to any preceding claim wherein the pull knob is provided with shoulders.
17. A latch according to any preceding claim, further including a mounting 5 bracket for mounting the latch on an assembly associated with a gate or door.
18. A latch according to claim 17, wherein the mounting bracket is slidably connected to the housing. io
19. A latch assembly, including a latch according to any preceding claim, and a striker pin capable of being mounted on a door or gate.
AU2012214107A 2011-02-09 2012-02-09 Latch for gates and doors Active AU2012214107B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2012214107A AU2012214107B2 (en) 2011-02-09 2012-02-09 Latch for gates and doors

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AU2011900410A AU2011900410A0 (en) 2011-02-09 Latch for gates and doors
AU2011900410 2011-02-09
AU2012214107A AU2012214107B2 (en) 2011-02-09 2012-02-09 Latch for gates and doors
PCT/AU2012/000120 WO2012106764A1 (en) 2011-02-09 2012-02-09 Latch for gates and doors

Publications (2)

Publication Number Publication Date
AU2012214107A1 true AU2012214107A1 (en) 2013-08-29
AU2012214107B2 AU2012214107B2 (en) 2014-12-04

Family

ID=46638070

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2012214107A Active AU2012214107B2 (en) 2011-02-09 2012-02-09 Latch for gates and doors

Country Status (2)

Country Link
AU (1) AU2012214107B2 (en)
WO (1) WO2012106764A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10590680B2 (en) * 2015-08-14 2020-03-17 Nationwide Industries, Inc. Gravity latch

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1187253A (en) * 1967-09-26 1970-04-08 John Pickup Ltd Improvements in Door Latches
US5129691A (en) * 1991-08-20 1992-07-14 Mcfarlen Jonn Gate latch control device
US5358292A (en) * 1992-03-12 1994-10-25 Wiebe Peter C Van Gate latch
AU725095B2 (en) * 1997-08-14 2000-10-05 D & D Group Pty Limited Improvements in and relating to latches for gates
US7201030B2 (en) * 2004-11-17 2007-04-10 Timothy E Erik Gate lock device
US20070175249A1 (en) * 2006-01-31 2007-08-02 D & D Group Pty Latches for gates and doors

Also Published As

Publication number Publication date
AU2012214107B2 (en) 2014-12-04
WO2012106764A1 (en) 2012-08-16

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NB Applications allowed - extensions of time section 223(2)

Free format text: THE TIME IN WHICH TO GAIN ACCEPTANCE HAS BEEN EXTENDED TO 16 NOVEMBER 2014. 16 NOV 2014 .

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PC Assignment registered

Owner name: DAZCORP PTY LTD

Free format text: FORMER OWNER(S): MACERNIS, AUDRIUS

Owner name: ELEINVEST (QLD) PTY LTD

Free format text: FORMER OWNER(S): MACERNIS, AUDRIUS

Owner name: CAPRICORN GLOBAL GROUP PTY LTD

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MK14 Patent ceased section 143(a) (annual fees not paid) or expired
NA Applications received for extensions of time, section 223

Free format text: AN APPLICATION TO EXTEND THE TIME FROM 09 FEB 2017 TO 09 OCT 2017 IN WHICH TO PAY A RENEWAL FEE HAS BEEN FILED

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Free format text: FORMER OWNER(S): ELEINVEST (QLD) PTY LTD; DAZCORP PTY LTD; CAPRICORN GLOBAL GROUP PTY LTD