WO1993001077A1 - Ameliorations relatives a des systemes de caddies reciproquement emboitables - Google Patents

Ameliorations relatives a des systemes de caddies reciproquement emboitables Download PDF

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Publication number
WO1993001077A1
WO1993001077A1 PCT/GB1992/001249 GB9201249W WO9301077A1 WO 1993001077 A1 WO1993001077 A1 WO 1993001077A1 GB 9201249 W GB9201249 W GB 9201249W WO 9301077 A1 WO9301077 A1 WO 9301077A1
Authority
WO
WIPO (PCT)
Prior art keywords
trolley
internesting
wheels
towards
nesting
Prior art date
Application number
PCT/GB1992/001249
Other languages
English (en)
Inventor
William Albert George Scothern
Original Assignee
William Albert George Scothern
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 William Albert George Scothern filed Critical William Albert George Scothern
Publication of WO1993001077A1 publication Critical patent/WO1993001077A1/fr

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
    • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/14—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor characterised by provisions for nesting or stacking, e.g. shopping trolleys
    • B62B3/1404—Means for facilitating stowing or transporting of the trolleys; Antitheft arrangements

Definitions

  • This invention relates to internesting trolley systems and more particularly but not exclusively to supermarket trolleys.
  • supermarket trolleys There is a well known and annoying problem with supermarket trolleys in that they are extremely difficult to steer and this problem is exacerbated with increasing load.
  • the main reason for the difficulty in steering is that all four wheels are swivel castor type which makes it difficult to steer round corners or across slopes because of the tendency of the trolley to move sideways. If either front or back wheels were non-swivelling types and the other wheels were swivelling types the steering and control would be substantially improved.
  • the reason that the trolleys are designed with four 360° castoring wheels is purely for marshalling of groups of trolleys nested one within another.
  • the presen t invention has various aspects one of which is concerned with improving the marshalling capability of trolleys be they the conventional type having all wheels of the swivel castor type or trolleys having mixed swivel castor and non castoring wheels and another aspect of which is concerned with the provision of a simple and reliable solution to the problem of providing a trolley that can be steered accurately.
  • each trolley has at least three wheels and means co-operable with an adjacent nested trolley to enable at least one of the wheels of the trolley, or its adjacent nested trolley, to be raised from the ground.
  • each trolley has a t least three wheels and in which when a row of trolleys are nested for movement en block one or more wheels of each of the trolleys are caused to be raised clear of the ⁇ roun ⁇ .
  • a t rolley for an internesting trolley system having at least three wheels, at least one wheel being provided towards one end and at least two towards the other end of the trolley, wherein means is provided whereby when one trolley is nested with another similar trolley at least one of the wheels of one of the trolleys is raised from the ground
  • each trolley has both swivel castored and non-swivelling wheels and means co-operable with an adjacent nested trolley to enable the non-swivelling wheels of the trolley, or its adjacent nested trolley, to be raised from the ground.
  • each trolley comprising swivel castored and non-swivelling wheels in which when a row of trolleys are nested for movement en block, the or most of the non-swivelling wheels are caused to be raised clear of the ground.
  • a trolley for an internesting trolley system having at least three wheels, at least one wheel being provided towards one end and at least two towards the other end of the trolley, in which either said at least one or said at least two wheels are swivel castored type and the other of said at least one or said at least two wheels are non-swivelling type, wherein means is provided whereby when one trolley is nested with another similar trolley the non- swivelling type wheel(s) of one of the trolleys are raised from the ground.
  • the cost of trolleys are also significantly reduced as the cost of swivel castor wheels is significantly more than non-swivelling wheels.
  • the invention is also applicable to conventional trolleys in which all wheels are of swivel castor type as it provides the previously mentioned advantages resulting from the fact that when marshalling there is a very significant reduction of the number of wheels in contact with the ground.
  • the invention is applicable to three, four or more than four wheel trolleys.
  • the swivel castor wheel(s) may be towards the front with the non-swivelled wheel(s) towards the back of the trolley or vice versa.
  • the invention also enables existing trolley systems to be converted to the improved system at extremely low cost.
  • Figure 1 is a side view of a first embodiment of trolley constructed in accordance with the invention.
  • Figure 2 is a rear view of the trolley of Figure 1
  • Figure 3 is a side view of two of the trolleys of Figures 1 and 2 approaching a nested position.
  • Figure 4 is a side view similar to Figure 3 but with the two trolleys nested.
  • Figure 5 is a side view of a second embodiment of trolley constructed in accordance with the invention
  • Figure 6 is a plan view of the trolley of Figure 5
  • Figure 7 is a side view of two of the trolleys of Figures 5 and 6 nested together.
  • Figure 8 is a side view of two nested trolleys of a third embodiment constructed in accordance with the invention.
  • FIG 9 is a plan view of the trolley of Figure 8.
  • Figure 10 is a side view of two nested trolleys of a fourth embodiment constructed in accordance with the invention
  • Figure 11 is a plan view of the trolley of Figure 10
  • Figure 12 is a side view of two nested trolleys of a fifth embodiment constructed in accordance with the invention.
  • FIG. 13 is a side view of two nested trolleys of a sixth embodiment constructed in accordance with the invention.
  • a single basic design of trolley is described incorporating the features of the invention and common reference numerals are used for similar components throughout this specification.
  • a supermarket trolley which has a wire basket 1 mounted on a tubular supporting framework 2 having two swivel castored wheels 3 for steering purposes and two non-castored wheels 4.
  • the swivel castored wheels 3 are mounted at the back of the framework and the non-swivelling wheels 4 at the front.
  • Mounted towards the front of the framework there are a pair of ramps 5 inclined downwardly and extending rearwardly of the front wheels to a level lower than the front of the framework which serve to receive the front of the framework of a similar nesting trolley.
  • the wire basket is of conventional construction having a hinged rear section which is raised when a similar trolley is nested therewith.
  • FIG 3 there is illustrated two trolleys of the type illustrated in Figures 1 and 2 with one inserted partially within the other in the direction of , nesting but not fully engaged. It will be seen that the left hand trolley which is being nested has the leading edge of its framework approaching the ramps 5 of the right hand receiving trolley. Further insertion of the trolley results in the leading edge of the framework riding up the ramps 5 until the lefthand trolley reaches the fully nested position illustrated in Figure 4.
  • this causes the front of the trolley to be raised such that the non-swivelling wheels of the nested lefthand trolley are raised from the ground.
  • An optional stop 6 may be provided at the upper end of the ramps although this is probably not required as the nesting insertion is normally restricted by the geometry of the trolley.
  • a projection may be provided on the ramp which permits the leading edge of the framework of the nesting trolley to ride over it but which resists return of the nesting trolley thereby retaining the front of the nested trolley in the raised state until forcibly released by pulling the nested trolley backwardly.
  • Such a projection could be shaped to provide easy on difficult return and could be sprung loaded such that it is retracted during upwardly sliding movement of the leading edge of the framework of the nesting trolley.
  • FIG. 5 & 6 there is illustrated a second embodiment of the invention which provides an extremely simple way of raising the front wheels of a nesting trolley.
  • the basic trolley construction is similar to the construction of Figure 1 having two swivel castored wheels 3 at the back of the framework and the non-swivelling wheels 4 at the front of the framework.
  • a ramp 7 is fitted on the inside bottom of the basket towards the front.
  • this provides a ramp which is inclined upwardly in a direction towards the front of the basket.
  • Figure 7 where one such trolley is nested with a similar trolley the leading edge of the bottom of the basket of the nesting trolley rides up the ramp and lifts the nesting trolley such that its front wheels are raised from the ground.
  • the ramp can be a simple wedge which can be secured to the bottom of the trolley baskets by a simple clamp or a snap action retainer.
  • the ramp could advantageously be made of a plastics material and could have moulded in snap action retainers which co-operate with the wire mesh of the basket.
  • a single ramp is shown which extends across the width of the basket it will be appreciated that the ramp need not be so wide.
  • two similarly contoured narrow ramps could be employed spaced apart one to each side of the basket.
  • a stop and/or retaining projection could be provided on the or each of the ramps similar to those described for Figure 1.
  • FIG. 8 and 9 relate to trolleys which have the swivel castored wheels 3 at the front and non-swivelling wheels at the back.
  • a ramp is formed by a simple wedge 8 similar to the wedge 7 of Figure 5.
  • the wedge 8 is fitted transversely on the top and towards the rear of the basket in such a position that when a trolley is nested with a similar trolley the top rail of the receiving trolley rides up the ramp such that its rear wheels are raised fro t he ground as illustrated in Figure 10.
  • this construction is particularly suitable for adapting existing trolleys in that the ramp can be a simple wedge which can be secured to the upper side edges of the trolley basket by clamping or by a snap action retainer.
  • the ramp could advantageously be made of plastics material and could have moulded in snap action retainers which co-operate with the upper edge of the basket. Although a single ramp is shown which extends across the width of the basket it will be appreciated that individual narrow ramps may be fitted one to each side of the basket thereby avoiding interference with access to the basket. A stop and/or retaining projection could be provided in the or each of the ramps similar to those described for Figure 1.
  • Figures 10 & 11 relate to trolleys which have swivel castored wheels 3 at the front and non-swivelling wheels at the back.
  • the trolley is provided with a bar or roller 9 externally at the back of the basket which extends transversely of the basket near to the top.
  • the bar or roller serves to ride on the upwardly inclined top of the basket of a similar nesting trolley such that when fully nested the rear wheels of the receiving trolley are raised above the ground.
  • this construction is particularly suitable for adapting existing trolleys as the bar or roller can be secured to the rear of the basket by clamping or snap action retainer which co ⁇ operates with the basket.
  • the bar or roller could be made of plastics and the bar or the shaft for the roller could have moulded in snap action retainers.
  • a short projection or a narrow roller may be provided one to each side of the rear of the trolley which ride on the upwardly inclined top of the basket of a similar nesting trolley.
  • FIG. 12 The construction of Figure 12 relates to trolleys which have swivel castored wheels 3 at the front and non- castored wheels 4 at the back.
  • the supporting framework 2 is provided at the back on each side with a ramp 10 which is inclined downwardly in a forward direction from a position about the level of the wheel to a position near to the ground.
  • the ramps are designed to act like a scoop in that when a nesting trolley is inserted into a receiving trolley the rear wheels of the receiving trolley ride up the ramp and are thereby raised from the ground.
  • a stop 11 which provides an easy on facility but which resists return of the wheels may be provided to avoid the raised wheels from riding down off the ramp purely under the action of gravity.
  • a single ramp may be employed which extends transversly.
  • the constructions of Figure 13 relates to trolleys which have swivel castor wheels 3 at the front and non swivelling wheels 4 at the back.
  • the supporting framework 2 is provided at the back on each side with an arcuate wheel rest 12 which extends backwardly from near the bottom of the framework and just clear of the ground.
  • wheel rest 12 which extends backwardly from near the bottom of the framework and just clear of the ground.
  • the invention is also applicable to three wheeled trolleys having a single swivel castored wheel at the front or back and two non-swivelling wheels at the back or front respectively. It is also applicable to trolleys having more than four wheels where there are mixed swivelling and non-swivelling wheels. Such trolleys are also considered to fall within the scope of this invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)

Abstract

Un caddy (1) emboîtable comprend au moins trois roues (3, 4), et est pourvu d'un élément (5) qui, lorsque le caddy est emboîté dans un caddy similaire, peut coopérer avec celui-ci pour permettre à au moins l'une des roues (4) du caddy, ou du caddy emboîté adjacent, d'être soulevée par rapport au sol.
PCT/GB1992/001249 1991-07-11 1992-07-09 Ameliorations relatives a des systemes de caddies reciproquement emboitables WO1993001077A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919115007A GB9115007D0 (en) 1991-07-11 1991-07-11 Improvements in internesting trolley systems
GB9115007.8 1991-07-11

Publications (1)

Publication Number Publication Date
WO1993001077A1 true WO1993001077A1 (fr) 1993-01-21

Family

ID=10698216

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1992/001249 WO1993001077A1 (fr) 1991-07-11 1992-07-09 Ameliorations relatives a des systemes de caddies reciproquement emboitables

Country Status (2)

Country Link
GB (1) GB9115007D0 (fr)
WO (1) WO1993001077A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6315306B1 (en) 1997-09-12 2001-11-13 Csia Research Foundation Nestable wheelchair
US6412795B1 (en) 1996-03-26 2002-07-02 Staxi Corporation Assembly of nestable wheelchairs and wheelchair for use in such an assembly
US6761364B2 (en) 2001-03-20 2004-07-13 Patent Holding Company Plastic shopping cart
WO2012119592A1 (fr) * 2011-03-10 2012-09-13 Martin Eberlein Chariot de supermarché
WO2018140605A3 (fr) * 2017-01-25 2018-09-07 Unarco Industries Llc Chariot
USD872962S1 (en) 2017-05-25 2020-01-14 Unarco Industries Llc Cart

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU56770A1 (fr) * 1967-08-29 1968-11-22
DE8523747U1 (de) * 1985-04-02 1985-12-05 Ateliers Réunis S.A., Schiltigheim, Bas-Rhin Transportwagen, insbesondere für die Kundschaft in Selbstbedienungsläden
DE8903451U1 (fr) * 1988-12-06 1989-05-11 Manss, August, 3500 Kassel, De

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU56770A1 (fr) * 1967-08-29 1968-11-22
DE8523747U1 (de) * 1985-04-02 1985-12-05 Ateliers Réunis S.A., Schiltigheim, Bas-Rhin Transportwagen, insbesondere für die Kundschaft in Selbstbedienungsläden
DE8903451U1 (fr) * 1988-12-06 1989-05-11 Manss, August, 3500 Kassel, De

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6412795B1 (en) 1996-03-26 2002-07-02 Staxi Corporation Assembly of nestable wheelchairs and wheelchair for use in such an assembly
US6315306B1 (en) 1997-09-12 2001-11-13 Csia Research Foundation Nestable wheelchair
US6761364B2 (en) 2001-03-20 2004-07-13 Patent Holding Company Plastic shopping cart
WO2012119592A1 (fr) * 2011-03-10 2012-09-13 Martin Eberlein Chariot de supermarché
CN103415433A (zh) * 2011-03-10 2013-11-27 马丁·埃伯莱因 购物车
US9120497B2 (en) 2011-03-10 2015-09-01 Martin Eberlein Shopping trolley
CN103415433B (zh) * 2011-03-10 2016-08-31 马丁·埃伯莱因 购物车
EA024865B1 (ru) * 2011-03-10 2016-10-31 Мартин Эберляйн Тележка для покупок
WO2018140605A3 (fr) * 2017-01-25 2018-09-07 Unarco Industries Llc Chariot
USD872962S1 (en) 2017-05-25 2020-01-14 Unarco Industries Llc Cart

Also Published As

Publication number Publication date
GB9115007D0 (en) 1991-08-28

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