GB2384175A - Locking device for a wheel of a trolley - Google Patents
Locking device for a wheel of a trolley Download PDFInfo
- Publication number
- GB2384175A GB2384175A GB0224476A GB0224476A GB2384175A GB 2384175 A GB2384175 A GB 2384175A GB 0224476 A GB0224476 A GB 0224476A GB 0224476 A GB0224476 A GB 0224476A GB 2384175 A GB2384175 A GB 2384175A
- Authority
- GB
- United Kingdom
- Prior art keywords
- locking
- locking member
- wheel
- inoperative position
- locking device
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/04—Braking mechanisms; Locking devices against movement
- B62B5/0404—Braking mechanisms; Locking devices against movement automatic
- B62B5/0423—Braking mechanisms; Locking devices against movement automatic braking or blocking when leaving a particular area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0028—Construction of wheels; methods of assembling on axle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0036—Castors in general; Anti-clogging castors characterised by type of wheels
- B60B33/0039—Single wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0047—Castors in general; Anti-clogging castors characterised by details of the rolling axle
- B60B33/0049—Castors in general; Anti-clogging castors characterised by details of the rolling axle the rolling axle being horizontal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0047—Castors in general; Anti-clogging castors characterised by details of the rolling axle
- B60B33/0057—Castors in general; Anti-clogging castors characterised by details of the rolling axle the rolling axle being offset from swivel axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/006—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism
- B60B33/0065—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis
- B60B33/0068—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis the swivel axis being vertical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/006—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism
- B60B33/0065—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis
- B60B33/0073—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis the swivel axis being symmetrical to wheel or wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0078—Castors in general; Anti-clogging castors characterised by details of the wheel braking mechanism
- B60B33/0086—Castors in general; Anti-clogging castors characterised by details of the wheel braking mechanism acting on rim or side portion of tyre
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0078—Castors in general; Anti-clogging castors characterised by details of the wheel braking mechanism
- B60B33/0092—Castors in general; Anti-clogging castors characterised by details of the wheel braking mechanism actuated remotely, e.g. by cable or electrically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/02—Castors in general; Anti-clogging castors with disengageable swivel action, i.e. comprising a swivel locking mechanism
- B60B33/021—Castors in general; Anti-clogging castors with disengageable swivel action, i.e. comprising a swivel locking mechanism combined with braking of castor wheel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/04—Braking mechanisms; Locking devices against movement
- B62B5/0404—Braking mechanisms; Locking devices against movement automatic
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Handcart (AREA)
Abstract
The lock comprises a stop 8 secured to the wheel and a locking arm 9 bearing magnets 13,14 which react with magnet 15 in the ground to pivot the arm to a position in which hook 13 engages the stop whereby to prevent the trolley being moved beyond an authorised area.. Magnets 17,18 on the wheel interact with those on the arm to assist in keeping it in the unlocked (Fig 2) or locked position. The arm is also biassed to the unlocked position by suitable positioning of its pivot and by attraction of magnet 14 to stop pin 16. The locked arm is re-set using a magnet or mechanical key.
Description
<Desc/Clms Page number 1>
LOCKING DEVICE FOR A WHEEL OF A MOVEABLE TROLLEY The present invention relates to a wheel locking device and more particularly to a locking device for a moveable trolley, such as a shopping trolley, for preventing theft of the trolley from a supermarket, car park or other designated area.
Shopping trolleys are provided in supermarkets to allow customers to collect goods and carry such goods, once purchased, to a vehicle in a car park of the supermarket. The theft of such shopping trolleys is a problem for supermarket owners resulting in substantial financial losses and a number of attempts have been made to devise systems to prevent or deter the removal of shopping trolleys from designated areas such as the supermarket building or an adjacent car park.
One known solution is to provide means for interconnecting a number of trolleys together. A user is then required'to insert a coin into a release mechanism to free a shopping trolley from other trolleys. The coin then remains locked in the release mechanism until the interconnecting means is reconnected to another trolley. Such known solution has been shown to act as a deterrent to trolley theft. However, customers find the operation of such release mechanisms inconvenient, requiring the customer to have a coin of the correct denomination to obtain use of a trolley.
An alternative solution has been to provide a locking device in association with one or more of the castor wheels of a shopping trolley which, when operated, engages the surface over which the trolley is being pushed to prevent or restrict further movement of the trolley. Triggering means are required to be placed at the boundary of the permitted range of the shopping trolleys (e. g. around the periphery of the supermarket car park) in order to operate the locking device when the trolley passes over or near to the triggering means.
<Desc/Clms Page number 2>
Such locking devices cause the trolley to stop abruptly when operated. As such, any accidental operation of the locking device may cause injury to the user of the trolley, possibly leading to a claim against the owners of the supermarket. Any such system must therefore be extremely reliable and any accidental operation of the locking device must be avoided.
In one known system, marketed under the trade name"Radlock"by Radford Retail Systems of Newbury, Berkshire and disclosed in WO 97/37883, a braking device is secured to part of a fork of a caster wheel of a shopping trolley. The braking device included a magnetic operating means moveable between a primed position and a triggered position by passage of the device in close proximity to a permanent magnet embedded in the ground adjacent an exit to the supermarket or car park or other designated area. Upon operation of the operating means a braking portion of the braking device is moved to an operative position wherein the braking portion contacts the ground surface to impede further movement of the trolley.
The Radlock system comprises a large number of moving parts increasing the cost of the system and, once operated, wear to the braking portion caused by frictional contact with the surface necessitates replacement of the braking portion. Whilst the braking device may be reset after operation thereof, such resetting operation is not particularly easy. Furthermore, the system is fitted to the outer surface of a caster wheel of a trolley and increases the external dimensions of the caster wheel accordingly. Since the braking device is fitted to the outside of the caster wheel the device is susceptible to damage during normal use of the trolley.
In a further known system, sold under the trade name"CAPS"by Carttronics LLC of San Diego, USA, and disclosed in WO 98/46469, a replacement caster wheel is substituted for at least one of the standard castor wheels on each trolley, said replacement caster incorporating a braking member moveable
<Desc/Clms Page number 3>
between a raised position spaced above the ground surface and an operative position wherein the braking member covers the lower portion of the wheel and engages the ground surface to impede movement of the trolley. The operation of the braking member is electronically controlled in response to an electromagnetic signal from an activating antenna buried around the perimeter of the designated area within which the trolley is permitted to be used (e. g. around the periphery of the store and/or the car park).
In the CAPS system the replacement castor wheel contains numerous complex electronic components and requires a battery power source.
Furthermore the system requires the replacement of at least one of the normal caster wheels on each trolley. As such, the cost of installing the system is high, especially where a large fleet of shopping trolleys are used.
Furthermore, the electromagnetic radiation emitted by the activating antenna may interfere with other electronic systems.
An object of the present invention is to provide a cheap, reliable device for impeding the removal of a shopping trolley from a designated area which can be fitted to a standard caster wheel of shopping trolley and that overcomes the disadvantages of the prior art systems.
According to the invention there is provided a locking device for a wheel of a moveable trolley, said locking device comprising a support structure for the wheel, a locking member pivotably mounted on the support structure for movement between an operative position and an inoperative position, biasing means being provide for biasing the locking member towards its inoperative position, stop means being secured to or provided on the wheel to be rotatable therewith said stop means cooperating with a locking portion of the locking member when the locking member is in its operative position to prevent rotation of the wheel, at least a portion of the locking member incorporating or being formed from a ferromagnetic material, and control means stationary and independent of said locking device and comprising
<Desc/Clms Page number 4>
further ferromagnetic material, such that said locking member and said control means each establishing a magnetic field such that said locking member is urged towards its operative position when the locking device is brought into proximity with the control means.
Preferably the locking member comprises an elongate body pivotably mounted on a spindle about an axis normal to the longitudinal axis of the locking member, said body having a first distal end comprising said locking portion of the locking member and a second, opposite, distal end. Each distal end of the locking member may incorporate or be formed from ferromagnetic material, or alternatively the whole locking member may be formed from ferromagnetic material, such that magnetic poles of opposite polarity are established the respective distal ends.
Preferably said biasing means comprises a first fixed magnetic member provided on the support structure adjacent the second distal end of the locking member when the locking member is in its inoperative position and formed from or incorporating ferromagnetic material establishing a magnetic field of the same polarity to that established by the second distal end of the locking member such that the locking member is urged away from said first magnetic member and towards its inoperative position whereby the resultant magnetic biasing force maintains the locking member in its inoperative position.
In a preferred embodiment a second fixed magnetic member is provided on the support structure adjacent the locking or first distal end of the locking member when the locking member is in its inoperative position, said second fixed magnetic member being formed from or incorporating ferromagnetic material establishing a magnetic field of the same polarity to that established by the locking or first distal end of the locking member such that the locking member is urged away from said second fixed magnetic member and towards
<Desc/Clms Page number 5>
its inoperative position to provide a further resultant magnetic biasing force maintaining the locking member in its inoperative position.
Preferably a stop member, formed from or incorporating a magnetic material (e. g. mild steel), is provided on the support structure, a portion of the locking member, preferably said second distal end thereof, abutting the stop member when the locking member is in its inoperative position, such that the magnetic field established by said locking member provides an attractive force retaining the locking member in contact with the stop member.
The combination of the stop member and the biasing means retain the locking member in its inoperative position and prevent the locking member from accidentally moving to its operative position when the locking device is exposed to shocks or vibration.
In a preferred embodiment the stop means is provided adjacent the rim of the wheel, the locking portion of the locking member moving in a radially outward direction as it moves from its inoperative to its operative position. Preferably one of said locking portion of the locking member or said stop means comprises a shaped portion adapted to engage a cooperating receiving portion of the other of said locking portion of the locking member or said stop means, preventing rotation of the wheel in its normal operative direction when the locking member is in its operative position, a rear face of the locking portion of the locking member abutting the stop means to prevent rotation of the wheel in a direction opposite to its normal operative direction when the locking member is in its operative position. As such, when the locking member is in its operative position the wheel can only rotate less than one revolution in either direction. Preferably said shaped portion comprises a hook shaped portion provided on said locking portion of the locking member adapted to engage a corresponding recess provided on said stop means.
<Desc/Clms Page number 6>
The present invention will be described further, by way of example, with reference to the accompanying drawings, in which :-
Fig. 1 is a side elevation of a castor wheel incorporating a locking device in accordance with the invention;
Fig. 2 is a sectional view of the device of Fig. 1 taken along line A-A with the locking device in its inoperative state;
Fig. 3 is a sectional view of the device of Fig. 1 taken along line A-A with the locking device in its operative state such that further rotation of the wheel is prevented.
Figures 1 to 3 show a locking device 1 according to the invention fitted to a conventional castor wheel of a shopping trolley. A standard rubber tyred polymeric moulded wheel 2 is mounted on a spindle 3 within a fork shaped mounting 4. The locking mechanism of the locking device 1 is contained within the space defined between a side cover 5 of the wheel 2 and the central web 6 of the wheel 2. A portion 7 of the fork shaped mounting 4 is received within a corresponding receiving portion of the side cover 5 to prevent rotation of the side cover 5.
An elongate abutment member or stop 8 is secured to the central web 6 of the wheel 2 adjacent the rim of the wheel. A locking lever 9 is pivotally mounted on a spindle 10 secured to the inner surface of the side cover 5 for movement between an inoperative position (shown in Fig. 2) wherein the wheel 2 is free to rotate, and an operative locking position wherein a locking end 11 of the locking lever 9 engages the stop 8 to prevent rotation of the wheel 2.
The locking end 11 of the locking lever 9 comprises a hook shaped portion which is adapted to engage a recessed portion 12 of the stop 8 when the wheel 2 is rotated in its normal direction of travel T with the locking lever 9 in its operative position. If the wheel is rotated counter to its normal direction of travel, the rear face of the hook shaped portion abuts the end of the stop 8 opposite said recessed portion 12, such that the wheel cannot be rotated
<Desc/Clms Page number 7>
more than approximately 80% of a complete turn in either direction when the locking lever 9 is in its operative position.
The locking lever 9 is formed from non-magnetic stainless steel and has permanent magnets 13,14 of a ferromagnetic material incorporated in or adjacent the distal ends thereof such that a magnetic field is established at each end of the locking lever 9. The permanent magnet 13 incorporated in the locking end 11 of the locking lever 9 establishing a magnetic field of opposite polarity to that established by the permanent magnet 14 incorporated in the opposite or non-locking end of the locking lever 9.
In use, the locking device 1 is activated by strips or blocks 15 of ferromagnetic material are embedded across exits and/or around the periphery of a area in which the trolley is intended to be used (e. g. around a store and/or around an adjacent car park), said strips of ferromagnetic material establishing a magnetic field at an upper surface thereof of opposite polarity to the magnetic field established at the locking end 11 of the locking lever 9.
When the wheel 2 passes over a strip or block 15, the permanent magnet 13 of the locking end 11 of the locking lever 9 is attracted towards the strip 15, while the permanent magnet 14 of the non-locking end of the locking lever 9 is repelled away from the strip 15, the resulting moment rotating the locking lever 9 from its inoperative position to its operative position whereupon the locking end 11 of the locking lever engages the stop 8 on the wheel 2 to prevent further rotation of the wheel 2 and halt the trolley. As such the trolley is prevented from being pushed out of a designated area of permitted operation.
A number of measures are employed to retain the locking lever 9 in its inoperative position during normal operation of the trolley within the permitted area of operation and prevent accidental movement of the locking lever 9 to
<Desc/Clms Page number 8>
its locking position, for example if the wheel is exposed to shocks or vibration should be wheel strike or run over obstacles during use of the trolley.
Firstly a stop pin 16 is provided on the side plate 5, the non-locking end of the locking lever 9 abutting the stop pin 16 when the locking lever 9 is in its inoperative position. The stop pin 16 is formed from a ferrous metal, such as mild steel, such that the stop pin is attracted towards the permanent magnet 14 incorporated in the non-locking end of the locking lever 9 to hold the locking lever 9 against the stop pin 16.
Secondly a fixed permanent magnet 17 is provided on the side plate 5 adjacent the non-locking end of the locking lever 9 when the locking lever 9 is in its inoperative position. The fixed magnet 17 is positioned above the stop pin 16 and establishes a magnet field of the same polarity as the magnetic field established by the magnet 14 of the non-locking end of the locking lever 9. As such, the fixed magnet 17 and the magnet 14 repel one another and urge the non-locking end of the locking lever 9 towards the stop pin 16 thus biasing the locking lever 9 towards its inoperative position. A further fixed permanent magnet 18 is provided on the side plate 5 adjacent the locking end 11 of the locking lever 9 when the locking lever 9 is in its inoperative position, said further fixed magnet 18 establishing a magnet field of the same polarity as the magnetic field established by the magnet 13 of the locking end 11 of the locking lever 9. The further fixed magnet 18 is positioned such that, when the locking lever is in its inoperative position, the further magnet 18 provides a further biasing force biasing the locking lever 9 towards its inoperative position.
Finally, the locking lever is constructed and the pivot point thereof is arranged such that the locking end of the lever is lighter than the non-locking end whereby the locking lever is biased towards its inoperative position by the force of gravity.
<Desc/Clms Page number 9>
Whilst the above arrangements cooperate to provide a biasing force acting to maintain the locking lever 9 in its inoperative position, the moment applied to the locking lever when the wheel 2 passes over an activating strip of block 15, by virtue of the strong magnetic field established by the block 15 cooperating with the magnetic fields established by the magnets 13,14 of the locking lever 9, is sufficient to overcome said biasing force and move the locking lever 9 to its operative position.
Once the locking device 1 has been activated to move the locking lever 9 to its operative position, the locking lever is maintained in its operative position by the magnetic force of repulsion between the permanent magnet 17 on the side plate 5 and the magnet 14 of the non-locking end of the locking lever 9 and between the further fixed magnet 18 on the side plate 5 and the magnet 13 of the locking end 11 of the locking lever 9.
Once the locking device 1 has been activated, the locking lever 9 an easily be returned to its inoperative position to reset the locking device 1 by bringing the wheel 1 into proximity with a block of ferromagnetic material establishing a magnetic field at an upper surface thereof of the same polarity to the magnetic field established at the locking end 11 of the locking lever 9 (for example by passing the wheel 2 over an embedded strip of such ferromagnetic material) whereby a moment is applied to the locking lever 9 urging it towards its inoperative position. Alternatively, the locking lever may be manually returned to its inoperative position by insertion of a resetting key into an aperture (20, Fig. 2) provided in the side plate 5, rotation of the resetting key once inserted through the aperture 20 causing a portion of the key to act against a portion of the locking lever 9 to urge the locking lever 9 towards its inoperative position.
Whilst in the preferred embodiment the locking device 1 is applied to a wheel of a shopping trolley, such may be utilised to prevent the theft of any other wheeled trolley or other wheeled device, for example a as golf trolley or airport trolley.
Claims (10)
- CLAIMS 1. A locking device for a wheel of a moveable trolley, said locking device comprising a support structure for the wheel, a locking member pivotably mounted on the support structure for movement between an operative position and an inoperative position, biasing means being provide for biasing the locking member towards its inoperative position, stop means being secured to or provided on the wheel to be rotatable therewith said stop means cooperating with a locking portion of the locking member when the locking member is in its operative position to prevent rotation of the wheel, at least a portion of the locking member incorporating or being formed from a ferromagnetic material, and control means stationary and independent of said locking device and comprising further ferromagnetic material, such that said locking member and said control means each establish a magnetic field such that said locking member is urged towards its operative position when the locking device is brought into proximity with the control means.
- 2. A locking device as claimed in claim 1, wherein the locking member comprises an elongate body pivotably mounted on a spindle about an axis normal to the longitudinal axis of the locking member, said body having a first distal end comprising said locking portion of the locking member and a second, opposite, distal end.
- 3. A locking device as claimed in claim 2, wherein each distal end of the locking member incorporates or is formed from ferromagnetic material, or wherein the whole locking member is formed from ferromagnetic material, such that magnetic poles of opposite polarity are established the respective distal ends.<Desc/Clms Page number 11>
- 4. A locking device as claimed in claim 3, wherein the biasing means comprises a first fixed magnetic member provided on the support structure adjacent the second distal end of the locking member when the locking member is in its inoperative position and formed from or incorporating ferromagnetic material establishing a magnetic field of the same polarity to that established by the second distal end of the locking member such that the locking member is urged away from said first magnetic member and towards its inoperative position whereby the resultant magnetic biasing force maintains the locking member in its inoperative position.
- 5. A locking device as claimed in claim 4, wherein a second fixed magnetic member is provided on the support structure adjacent the locking or first distal end of the locking member when the locking member is in its inoperative position, said second fixed magnetic member being formed from or incorporating ferromagnetic material establishing a magnetic field of the same polarity to that established by the locking or first distal end of the locking member such that the locking member is urged away from said second fixed magnetic member and towards its inoperative position to provide a further resultant magnetic biasing force maintaining the locking member in its inoperative position.
- 6. A locking device as claimed in any of claims 3 to 5, wherein a stop member, formed from or incorporating a ferromagnetic or magnetic, is provided on the support structure, a portion of the locking member, preferably said second distal end thereof, abutting the stop member when the locking member is in its inoperative position, such that the magnetic field established by said locking member provides an attractive force retaining the locking member in contact with the stop member.<Desc/Clms Page number 12>
- 7. A locking device as claimed in claim 6, wherein the stop means is provided adjacent the rim of the wheel, the locking portion of the locking member moving in a radially outward direction as it moves from its inoperative to its operative position.
- 8. A locking device as claimed in any preceding claim, wherein one of said locking portion of the locking member or said stop means comprises a shaped portion adapted to engage a cooperating receiving portion of the other of said locking portion of the locking member or said stop means, preventing rotation of the wheel in its normal operative direction when the locking member is in its operative position, a rear face of the locking portion of the locking member abutting the stop means to prevent rotation of the wheel in a direction opposite to its normal operative direction when the locking member is in its operative position.
- 9. A locking device as claimed in claim 8, wherein said shaped portion comprises a hook shaped portion provided on said locking portion of the locking member adapted to engage a corresponding recess provided on said stop means.
- 10. A locking device substantially as hereinbefore described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0201244A GB0201244D0 (en) | 2002-01-19 | 2002-01-19 | Locking device for a wheel of a moveable trolley |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0224476D0 GB0224476D0 (en) | 2002-11-27 |
| GB2384175A true GB2384175A (en) | 2003-07-23 |
Family
ID=9929404
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0201244A Ceased GB0201244D0 (en) | 2002-01-19 | 2002-01-19 | Locking device for a wheel of a moveable trolley |
| GB0224476A Withdrawn GB2384175A (en) | 2002-01-19 | 2002-10-22 | Locking device for a wheel of a trolley |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0201244A Ceased GB0201244D0 (en) | 2002-01-19 | 2002-01-19 | Locking device for a wheel of a moveable trolley |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB0201244D0 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007110572A1 (en) * | 2006-03-24 | 2007-10-04 | Gray Matter (Alpha) Limited | Latching mechanism |
| WO2006086975A3 (en) * | 2005-02-18 | 2008-02-14 | Horst Sonnendorfer | Immobilizer for a transport trolley |
| CN101448652B (en) * | 2006-05-23 | 2013-01-16 | 霍斯特·松嫩多费尔 | Immobilizer for shopping trolleys |
| CN103171602A (en) * | 2013-04-07 | 2013-06-26 | 茅鸿勇 | Automatic control device of handcart |
| CN101500877B (en) * | 2005-02-18 | 2014-01-01 | 霍斯特·松嫩多费尔 | Immobilizer for a transport trolley |
| US9333823B2 (en) | 2013-12-23 | 2016-05-10 | Hossein Shahroodi | Gravitationally aligning wheels |
| EP3812165A1 (en) * | 2019-10-24 | 2021-04-28 | Tente Roulettes Polymeres-Bruandet | Castor with controllable locking |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2964140A (en) * | 1959-09-14 | 1960-12-13 | Gilbert Florence | Anti-theft device for carts |
| US3031038A (en) * | 1959-11-16 | 1962-04-24 | Irving Stollman | Magnetic wheel lock |
| US3031037A (en) * | 1960-09-12 | 1962-04-24 | Stollman Irving | Caster structure |
| US3117655A (en) * | 1961-02-13 | 1964-01-14 | Faultless Caster Corp | Magnetic lock for a caster assembly |
| US3495688A (en) * | 1968-10-16 | 1970-02-17 | Elmer H Isaacks | Shopping cart wheel lock |
-
2002
- 2002-01-19 GB GB0201244A patent/GB0201244D0/en not_active Ceased
- 2002-10-22 GB GB0224476A patent/GB2384175A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2964140A (en) * | 1959-09-14 | 1960-12-13 | Gilbert Florence | Anti-theft device for carts |
| US3031038A (en) * | 1959-11-16 | 1962-04-24 | Irving Stollman | Magnetic wheel lock |
| US3031037A (en) * | 1960-09-12 | 1962-04-24 | Stollman Irving | Caster structure |
| US3117655A (en) * | 1961-02-13 | 1964-01-14 | Faultless Caster Corp | Magnetic lock for a caster assembly |
| US3495688A (en) * | 1968-10-16 | 1970-02-17 | Elmer H Isaacks | Shopping cart wheel lock |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101500877B (en) * | 2005-02-18 | 2014-01-01 | 霍斯特·松嫩多费尔 | Immobilizer for a transport trolley |
| WO2006086975A3 (en) * | 2005-02-18 | 2008-02-14 | Horst Sonnendorfer | Immobilizer for a transport trolley |
| WO2006086977A3 (en) * | 2005-02-18 | 2008-02-14 | Horst Sonnendorfer | Blocking device for a shopping cart |
| DE112006000961B4 (en) * | 2005-02-18 | 2018-02-01 | Andreas Filosi | Immobilizer for a steerable roller of a trolley |
| US8029005B2 (en) * | 2005-02-18 | 2011-10-04 | Horst Sonnendorfer | Immobilizer for shopping trolleys |
| US9016444B2 (en) * | 2005-02-18 | 2015-04-28 | Horst Sonnendorfer | Immobilizer for a transport trolley |
| AU2007231174B2 (en) * | 2006-03-24 | 2011-09-01 | Radlok S.A.R.L. | Latching mechanism |
| US8267226B2 (en) | 2006-03-24 | 2012-09-18 | Radlok S.A.R.L. | Latching mechanism |
| WO2007110572A1 (en) * | 2006-03-24 | 2007-10-04 | Gray Matter (Alpha) Limited | Latching mechanism |
| CN101448652B (en) * | 2006-05-23 | 2013-01-16 | 霍斯特·松嫩多费尔 | Immobilizer for shopping trolleys |
| CN103171602A (en) * | 2013-04-07 | 2013-06-26 | 茅鸿勇 | Automatic control device of handcart |
| CN103171602B (en) * | 2013-04-07 | 2016-02-24 | 茅鸿勇 | The control device automatic processed of hand barrow |
| US9333823B2 (en) | 2013-12-23 | 2016-05-10 | Hossein Shahroodi | Gravitationally aligning wheels |
| EP3812165A1 (en) * | 2019-10-24 | 2021-04-28 | Tente Roulettes Polymeres-Bruandet | Castor with controllable locking |
| FR3102404A1 (en) * | 2019-10-24 | 2021-04-30 | Tente Roulettes Polymères - Bruandet | Caster with controllable lock |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0201244D0 (en) | 2002-03-06 |
| GB0224476D0 (en) | 2002-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4591175A (en) | Shopping cart anti-theft apparatus | |
| US5881846A (en) | Security device for shopping carts and the like | |
| US6161849A (en) | Turn wheel locking device | |
| US6173817B1 (en) | Automatically braking device when leaving a protected area | |
| US4242668A (en) | Cart theft prevention system | |
| US5823302A (en) | Toggle brake assembly for a wheel of a shopping cart or the like | |
| US6125972A (en) | Security apparatus and method for shopping carts and the like | |
| US5315290A (en) | Cart theft prevention system | |
| US5357182A (en) | Shopping cart theft prevention system | |
| EP0183774B1 (en) | Shopping cart security device | |
| US4577880A (en) | Theft prevention apparatus for shopping carts | |
| EP0575414B1 (en) | Improvements in and relating to braking devices | |
| US3031038A (en) | Magnetic wheel lock | |
| EP1545956B1 (en) | Braking assembly | |
| US6374955B1 (en) | Braking assembly | |
| WO2010036952A2 (en) | Magnetically activated wheel lock mechanism | |
| GB2384175A (en) | Locking device for a wheel of a trolley | |
| US6102414A (en) | Turn wheel locking device | |
| EP0740624B1 (en) | A security device | |
| US3434571A (en) | Magnetic operated locking device | |
| IE950058A1 (en) | A security device | |
| WO2012066318A1 (en) | Braking device and method for braking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |