WO2008001029A1 - Apparatus for carrying a load up and down stairs - Google Patents

Apparatus for carrying a load up and down stairs Download PDF

Info

Publication number
WO2008001029A1
WO2008001029A1 PCT/GB2006/050174 GB2006050174W WO2008001029A1 WO 2008001029 A1 WO2008001029 A1 WO 2008001029A1 GB 2006050174 W GB2006050174 W GB 2006050174W WO 2008001029 A1 WO2008001029 A1 WO 2008001029A1
Authority
WO
WIPO (PCT)
Prior art keywords
traction device
load carrier
movement
stay
suitcase
Prior art date
Application number
PCT/GB2006/050174
Other languages
French (fr)
Inventor
Humayan Sheikh
Original Assignee
Payn, Roger
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 Payn, Roger filed Critical Payn, Roger
Priority to PCT/GB2006/050174 priority Critical patent/WO2008001029A1/en
Publication of WO2008001029A1 publication Critical patent/WO2008001029A1/en

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
    • B62B5/02—Accessories or details specially adapted for hand carts providing for travelling up or down a flight of stairs
    • B62B5/025—Accessories or details specially adapted for hand carts providing for travelling up or down a flight of stairs with gliding elements, e.g. skids
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C13/00—Details; Accessories
    • A45C13/38—Luggage carriers
    • A45C13/385—Luggage carriers with rolling means
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C5/00—Rigid or semi-rigid luggage
    • A45C5/14—Rigid or semi-rigid luggage with built-in rolling means
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C5/00—Rigid or semi-rigid luggage
    • A45C5/14—Rigid or semi-rigid luggage with built-in rolling means
    • A45C2005/147—Rigid or semi-rigid luggage with built-in rolling means for climbing stairs

Definitions

  • This invention relates to load carrier comprising a support having at least one wheel at one end, a handle at an opposite end and an adjustable traction device designed to hinge relative to the support from a stowed position to a deployed position where it serves to assist in moving the carrier up and down stairs.
  • the invention was particularly devised for application in the design of a suitcase (which term is used in this specification to refer to any travelling bag).
  • the principle of the invention could be used in other mechanisms such as trolleys or stair lifts where there is a requirement to carry heavy goods, materials or people of limited mobility up or down a flight of steps or stairs.
  • Patent specification US 2996133 describes one such mechanism, which employs a pair of endless traction belts driven by a motor. The traction device needs to be supported at the correct angle for which purpose locking pins 53 are inserted into holes 55 as shown in Figs 3 and 5 of the abovementioned patent specification.
  • Patent specification US 4130291 This mechanism employs struts 24 and 25 of unequal length, to support a traction device at the desired angle. Each of the struts 25 is telescopic and is provided with set-screws 53 to lock it at the desired position of adjustment.
  • This invention provides a load carrier of the type described above characterised by a supporting stay for holding the traction device in its deployed position, the stay being designed to hinge relative to both the traction device and to the support and to slide relative to at least one of them as the support is hinged from its stowed to its deployed position.
  • the traction mechanism can take the form of an endless belt supported on suitable rollers as in the prior patent specifications referred to. Alternatively it could have runners or some other friction-reduction element.
  • One preferred construction employs pivoted flaps having a high friction surface on one side and a low friction surface on the opposite side. The flaps are attached along one long side to the base of a suitcase so that they will trail behind the movement. During forward movement the low-friction side faces down, whilst any attempt to move in the opposite direction causes the high- friction surface to face downwardly thereby resisting unwanted reverse downward slippage.
  • an energy store could be incorporated into the design. This would store energy released when the load moves downwardly; and release the energy during upward movement.
  • a suitable energy store could be provided by helical tension springs and these could be housed in compartments in or next to a suitcase base.
  • a suitable mechanism would be needed for tensioning the springs during downward movement.
  • each spring is connected to a wire or similar flexible member. Rotation of the wheels and/or the movement of the traction device during downward movement causes this wire to wind around a drum thereby causing the spring to stretch.
  • a release mechanism allows controlled release of the stored energy to drive the load effortlessly up stairs when required.
  • a load carrier comprising a support having at least one wheel at one end and a handle at an opposite end; characterised by an energy store, means for charging the store with energy derived from downward movement of the carrier and means for using the stored energy for assisting upward movement.
  • the invention can either be employed as a built in feature of a complete suitcase or can be employed in a trolley specifically adapted to receive a suitcase. Also, the invention is applicable in fields other than suitcases. For example it could be used for general- purpose trolleys, shopping trolleys, wheelchairs for invalids, and push-chairs for infants.
  • Fig 1 is a perspective view of a suitcase constructed in accordance with the invention, illustrated with its traction device shown in a stowed position;
  • Fig 2 shows the suitcase of Fig 1 but with the traction device illustrated in a deployed position
  • Fig 3 shows the same suitcase being moved up a flight of stairs
  • Fig 4 shows a schematic detail view of an alternative traction device for use on a suitcase like that of Figs 1 to 3.
  • the illustrated suitcase has a load-support in the form of a rectilinear container 1.
  • a lid IA forming a top surface of the container, can be opened to access the interior.
  • wheels 2 At one end of a base IB are wheels 2 allowing the container to be pulled easily over smooth surfaces using a rigid handle 3 at the opposite end of the base IB.
  • a traction device 4 in the form of a smooth-surfaced skid plate, is hinged at 5 about an axis parallel to that of the wheels 2 so that it can be pivoted from a stowed position, as shown in Fig 1, to a deployed position, as shown in Fig 2.
  • a stay 6 is hinged to a free edge of the skid plate 4 and to a slide plate 7, and serves to hold the skid plate 4 firmly in its deployed position by virtue of a triangular configuration defined by components 1, 4 and 6.
  • the slide plate 7 is mounted on rails 8 fixed to the base of the container 1 and terminates in a secondary handle 7A. By pushing and pulling this handle 7A, the user is able to quickly adjust the skid plate between its stowed and deployed positions. Detent arrangements are preferably included to maintain it in the desired one of these positions.
  • Fig 3 shows the skid plate 4 in use as the suitcase is being pulled up a flight of stairs.
  • the skid plate is sufficiently long to bridge at least two stair edges and its smooth bottom surface allows even a heavy load to glide relatively effortlessly either up or down the stairs without a significant bumping effect.
  • the illustrated construction is just one of many possible examples of how the invention may be implemented.
  • the relative dimensions of the suitcase 1, skid plate 4 and stay 6 may be varied; and traction devices more complex than the simple skid plate 4 may be employed.
  • rails may be fitted to the lower surface of the skid plate to reduce friction.
  • Another possibility would be to employ an endless belt similar to those described in the prior patent specifications referred to earlier.
  • a particular advantage of the latter arrangement is that movement of the belt can be regulated so as to control downward movement; and in a variation of this technique, potential energy released during this downward movement can be stored, e.g. in as spring for subsequent use during the next upward movement.
  • Fig 4 shows a skid 4A on which are mounted a number of flaps 13 of flexible material.
  • each flap swivels about its fixed edge so that its free edge trails behind the direction of movement.
  • One side of each flap (the side visible in the drawing) is coated with a low- friction synthetic plastics material. The opposite side presents a high- friction surface to resist downward movement.
  • the flaps could be relatively rigid but hinged for swivelling movement though a limited range so that they lie flat for upward movement, when the case is being pulled forward, but hinge away from the base of the case to resist downward movement under the effect of gravity.

Abstract

A load carrier, such as a suitcase or trolley, has an adjustable traction device (4) designed to hinge from a stowed position to the illustrated deployed position where it serves to assist in moving the carrier up and down stairs. Previous proposals for such traction devices have used locking pins or set screws to hold the traction device in its deployed position and this has made it impossible to deploy the traction device quickly when needed. The invention employs a supporting stay (6) for holding the traction device (4) in its deployed position, this stay (6) being designed to hinge relative to both the traction device (4) and to a supporting structure of the suitcase or other load carrier. The supporting stay (6) slides relative to either the supporting structure or the traction device so as to slide into its deployed position as the traction device is hinged open.

Description

APPARATUS FOR CARRYING A LOAD UP AND DOWN STAIRS
This invention relates to load carrier comprising a support having at least one wheel at one end, a handle at an opposite end and an adjustable traction device designed to hinge relative to the support from a stowed position to a deployed position where it serves to assist in moving the carrier up and down stairs.
The invention was particularly devised for application in the design of a suitcase (which term is used in this specification to refer to any travelling bag). However the principle of the invention could be used in other mechanisms such as trolleys or stair lifts where there is a requirement to carry heavy goods, materials or people of limited mobility up or down a flight of steps or stairs.
Numerous previous attempts have been made for moving loads up and down stairs. Some previous proposals have employed a technique in which a traction device is used to bridge two or more stair edges so as to avoid a bumping effect as the load is pulled or driven up the stairs. Patent specification US 2996133 describes one such mechanism, which employs a pair of endless traction belts driven by a motor. The traction device needs to be supported at the correct angle for which purpose locking pins 53 are inserted into holes 55 as shown in Figs 3 and 5 of the abovementioned patent specification. A similar principle, proposed for use on a shopping trolley, is described in patent specification US 4130291. This mechanism employs struts 24 and 25 of unequal length, to support a traction device at the desired angle. Each of the struts 25 is telescopic and is provided with set-screws 53 to lock it at the desired position of adjustment.
A disadvantage of both of these known proposals is that the adjustment mechanism (the pin-and hole arrangement in the first example and the set-screw arrangement of the second) will take a significant time to operate. This may be unacceptable in certain situations. For example, a traveller approaching a flight of steps with a suitcase is likely to decide that it is easier to carry the suitcase up the steps than to operate such mechanisms.
This invention provides a load carrier of the type described above characterised by a supporting stay for holding the traction device in its deployed position, the stay being designed to hinge relative to both the traction device and to the support and to slide relative to at least one of them as the support is hinged from its stowed to its deployed position.
By employing this technique it becomes possible to deploy the traction device quickly and conveniently as the user approaches a flight of steps; and equally quickly to return it to its stowed position after use.
The traction mechanism can take the form of an endless belt supported on suitable rollers as in the prior patent specifications referred to. Alternatively it could have runners or some other friction-reduction element. One preferred construction employs pivoted flaps having a high friction surface on one side and a low friction surface on the opposite side. The flaps are attached along one long side to the base of a suitcase so that they will trail behind the movement. During forward movement the low-friction side faces down, whilst any attempt to move in the opposite direction causes the high- friction surface to face downwardly thereby resisting unwanted reverse downward slippage.
In an optional variant of the invention it is envisaged that an energy store could be incorporated into the design. This would store energy released when the load moves downwardly; and release the energy during upward movement. A suitable energy store could be provided by helical tension springs and these could be housed in compartments in or next to a suitcase base. A suitable mechanism would be needed for tensioning the springs during downward movement. In one design each spring is connected to a wire or similar flexible member. Rotation of the wheels and/or the movement of the traction device during downward movement causes this wire to wind around a drum thereby causing the spring to stretch. A release mechanism allows controlled release of the stored energy to drive the load effortlessly up stairs when required.
The storing of energy during downward movement for later use during upward movement is considered to be both novel and inventive. Thus, in accordance with another aspect of this invention there is provided a load carrier comprising a support having at least one wheel at one end and a handle at an opposite end; characterised by an energy store, means for charging the store with energy derived from downward movement of the carrier and means for using the stored energy for assisting upward movement.
The invention can either be employed as a built in feature of a complete suitcase or can be employed in a trolley specifically adapted to receive a suitcase. Also, the invention is applicable in fields other than suitcases. For example it could be used for general- purpose trolleys, shopping trolleys, wheelchairs for invalids, and push-chairs for infants.
One way in which the invention may be performed will now be by way of example with reference to the accompanying drawings in which: -
Fig 1 is a perspective view of a suitcase constructed in accordance with the invention, illustrated with its traction device shown in a stowed position;
Fig 2 shows the suitcase of Fig 1 but with the traction device illustrated in a deployed position;
Fig 3 shows the same suitcase being moved up a flight of stairs; and
Fig 4 shows a schematic detail view of an alternative traction device for use on a suitcase like that of Figs 1 to 3. Referring first to Fig 1, the illustrated suitcase has a load-support in the form of a rectilinear container 1. A lid IA, forming a top surface of the container, can be opened to access the interior. At one end of a base IB are wheels 2 allowing the container to be pulled easily over smooth surfaces using a rigid handle 3 at the opposite end of the base IB.
A traction device 4, in the form of a smooth-surfaced skid plate, is hinged at 5 about an axis parallel to that of the wheels 2 so that it can be pivoted from a stowed position, as shown in Fig 1, to a deployed position, as shown in Fig 2.
Referring to Fig 2, a stay 6 is hinged to a free edge of the skid plate 4 and to a slide plate 7, and serves to hold the skid plate 4 firmly in its deployed position by virtue of a triangular configuration defined by components 1, 4 and 6. The slide plate 7 is mounted on rails 8 fixed to the base of the container 1 and terminates in a secondary handle 7A. By pushing and pulling this handle 7A, the user is able to quickly adjust the skid plate between its stowed and deployed positions. Detent arrangements are preferably included to maintain it in the desired one of these positions.
Fig 3 shows the skid plate 4 in use as the suitcase is being pulled up a flight of stairs. The skid plate is sufficiently long to bridge at least two stair edges and its smooth bottom surface allows even a heavy load to glide relatively effortlessly either up or down the stairs without a significant bumping effect. It will be appreciated that the illustrated construction is just one of many possible examples of how the invention may be implemented. The relative dimensions of the suitcase 1, skid plate 4 and stay 6 may be varied; and traction devices more complex than the simple skid plate 4 may be employed. For example, rails may be fitted to the lower surface of the skid plate to reduce friction. Another possibility would be to employ an endless belt similar to those described in the prior patent specifications referred to earlier. A particular advantage of the latter arrangement is that movement of the belt can be regulated so as to control downward movement; and in a variation of this technique, potential energy released during this downward movement can be stored, e.g. in as spring for subsequent use during the next upward movement.
Fig 4 shows a skid 4A on which are mounted a number of flaps 13 of flexible material. When the load is pulled up a sloping surface, or a flight of stairs, each flap swivels about its fixed edge so that its free edge trails behind the direction of movement. One side of each flap (the side visible in the drawing) is coated with a low- friction synthetic plastics material. The opposite side presents a high- friction surface to resist downward movement. In an alternative design, not shown, the flaps could be relatively rigid but hinged for swivelling movement though a limited range so that they lie flat for upward movement, when the case is being pulled forward, but hinge away from the base of the case to resist downward movement under the effect of gravity.

Claims

1. A load carrier comprising a support having at least one wheel at one end, a handle at an opposite end and an adjustable traction device designed to hinge relative to the support from a stowed position to a deployed position where it serves to assist in moving the carrier up and down stairs; characterised by a supporting stay for holding the traction device in its deployed position, the stay being designed to hinge relative to both the traction device and to the support and to slide relative to at least one of them as the support is hinged from its stowed to its deployed position.
2. A load carrier according to Claim 1 in the form of a suitcase.
3. A load carrier according to Claim 1 in the form of a trolley adapted to carry a suitcase.
4. A load carrier according to any preceding Claim characterised in that the traction device and the stay are designed to rest end-to-end in the stowed position.
5. A load carrier according to Claim 4 characterised in that one end of the stay is hinged to the traction device and an opposite end is adapted to slide and hinge relative to the support.
6. A load carrier according to Claim 5 characterised by a deployment mechanism designed to allow a user to push and/or pull the said opposite end of the stay between its stowed and deployed positions.
7. A load carrier according to any preceding Claim charactised in that the traction device includes a continuous moveable flexible track.
8. A suitcase according to any one of Claims 1 to 6 characterised in that the traction device has flexible or pivoted flaps or fronds designed to trail behind the direction of movement so as to facilitate forward movement relative to movement in the reverse direction
9. A suitcase according to Claim 8 characterised in that that the flaps or fronds expose different surfaces depending on the direction of movement, these surfaces having different co-efficients of friction so as to allow easier movement in one direction than in the opposite direction.
10. A load carrier comprising a support having at least one wheel at one end and a handle at an opposite end; characterised by an energy store, means for charging the store with energy derived from downward movement of the carrier and means for using the stored energy for assisting upward movement.
11. A load carrier according to Claim 10 characterised in that the energy store includes a mechanical spring.
12. A load carrier according to Claim 11 characterised in that the spring is a helical tension spring attached to a flexible member and including means for using the downward movement to wind the flexible member around a roller thereby tensioning the spring.
PCT/GB2006/050174 2006-06-28 2006-06-28 Apparatus for carrying a load up and down stairs WO2008001029A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/GB2006/050174 WO2008001029A1 (en) 2006-06-28 2006-06-28 Apparatus for carrying a load up and down stairs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/GB2006/050174 WO2008001029A1 (en) 2006-06-28 2006-06-28 Apparatus for carrying a load up and down stairs

Publications (1)

Publication Number Publication Date
WO2008001029A1 true WO2008001029A1 (en) 2008-01-03

Family

ID=37744101

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2006/050174 WO2008001029A1 (en) 2006-06-28 2006-06-28 Apparatus for carrying a load up and down stairs

Country Status (1)

Country Link
WO (1) WO2008001029A1 (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8707077B2 (en) 2011-09-23 2014-04-22 Imagination Technologies, Ltd. Method and apparatus for time synchronisation in wireless networks
USD904829S1 (en) 2018-12-11 2020-12-15 Yeti Coolers, Llc Container accessories
USD907445S1 (en) 2018-12-11 2021-01-12 Yeti Coolers, Llc Container accessories
US11203465B2 (en) 2017-06-12 2021-12-21 Yeti Coolers, Llc Container and latching system
USD946894S1 (en) 2017-06-12 2022-03-29 Yeti Coolers, Llc Container
USD951643S1 (en) 2020-06-30 2022-05-17 Yeti Coolers, Llc Luggage
KR102403467B1 (en) * 2021-11-16 2022-05-30 손민준 Carrier
USD954436S1 (en) 2020-06-30 2022-06-14 Yeti Coolers, Llc Luggage
USD960648S1 (en) 2020-12-16 2022-08-16 Yeti Coolers, Llc Container accessory
USD961926S1 (en) 2020-06-30 2022-08-30 Yeti Coolers, Llc Luggage
USD963344S1 (en) 2020-06-30 2022-09-13 Yeti Coolers, Llc Luggage
US11517086B2 (en) 2019-01-06 2022-12-06 Yeti Coolers, Llc Luggage system
USD985937S1 (en) 2020-12-16 2023-05-16 Yeti Coolers, Llc Container
US11685573B2 (en) 2017-06-12 2023-06-27 Yeti Coolers, Llc Carry strap for container
USD994438S1 (en) 2020-12-16 2023-08-08 Yeti Coolers, Llc Container

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4130291A (en) * 1976-11-10 1978-12-19 Magnus Saethre Shopping cart capable for use on stairs
US5568848A (en) * 1994-07-01 1996-10-29 Liang; Joseph Laterally movable suitcase with wheeled, pivotable leg
GB2327643A (en) * 1997-07-30 1999-02-03 Michael Trainor Pushchair track attachment for ascending & descending stairs
DE10338008A1 (en) * 2003-08-19 2005-03-17 Roland Drignath Stair-climber belt device on suitcases, prams, shopping trolleys, etc. consists of climbing belts with struts born in carriers, and connected control boxes
GB2421713A (en) * 2005-01-04 2006-07-05 Humayun Sheikh Load carrier adapted for moving up and down stairs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4130291A (en) * 1976-11-10 1978-12-19 Magnus Saethre Shopping cart capable for use on stairs
US5568848A (en) * 1994-07-01 1996-10-29 Liang; Joseph Laterally movable suitcase with wheeled, pivotable leg
GB2327643A (en) * 1997-07-30 1999-02-03 Michael Trainor Pushchair track attachment for ascending & descending stairs
DE10338008A1 (en) * 2003-08-19 2005-03-17 Roland Drignath Stair-climber belt device on suitcases, prams, shopping trolleys, etc. consists of climbing belts with struts born in carriers, and connected control boxes
GB2421713A (en) * 2005-01-04 2006-07-05 Humayun Sheikh Load carrier adapted for moving up and down stairs

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11863656B2 (en) 2011-09-23 2024-01-02 Imagination Technologies Limited Method and apparatus for time synchronisation in wireless networks
US9794058B2 (en) 2011-09-23 2017-10-17 Imagination Technologies Limited Method and apparatus for time synchronisation in wireless networks
US10491371B2 (en) 2011-09-23 2019-11-26 Imagination Technologies Limited Method and apparatus for time synchronisation in wireless networks
US11394524B2 (en) 2011-09-23 2022-07-19 Imagination Technologies Limited Method and apparatus for time synchronization in wireless networks
US8707077B2 (en) 2011-09-23 2014-04-22 Imagination Technologies, Ltd. Method and apparatus for time synchronisation in wireless networks
US11203465B2 (en) 2017-06-12 2021-12-21 Yeti Coolers, Llc Container and latching system
USD946894S1 (en) 2017-06-12 2022-03-29 Yeti Coolers, Llc Container
US11685573B2 (en) 2017-06-12 2023-06-27 Yeti Coolers, Llc Carry strap for container
USD925991S1 (en) 2018-12-11 2021-07-27 Yeti Coolers, Llc Container accessories
USD929814S1 (en) 2018-12-11 2021-09-07 Yeti Coolers, Llc Container accessories
USD962010S1 (en) 2018-12-11 2022-08-30 Yeti Coolers, Llc Divider accessory
USD925299S1 (en) 2018-12-11 2021-07-20 Yeti Coolers, Llc Container accessories
USD907445S1 (en) 2018-12-11 2021-01-12 Yeti Coolers, Llc Container accessories
USD904829S1 (en) 2018-12-11 2020-12-15 Yeti Coolers, Llc Container accessories
USD959208S1 (en) 2018-12-11 2022-08-02 Yeti Coolers, Llc Caddy accessory
USD960656S1 (en) 2018-12-11 2022-08-16 Yeti Coolers, Llc Bag accessory
US11517086B2 (en) 2019-01-06 2022-12-06 Yeti Coolers, Llc Luggage system
USD954436S1 (en) 2020-06-30 2022-06-14 Yeti Coolers, Llc Luggage
USD961926S1 (en) 2020-06-30 2022-08-30 Yeti Coolers, Llc Luggage
USD963344S1 (en) 2020-06-30 2022-09-13 Yeti Coolers, Llc Luggage
USD951643S1 (en) 2020-06-30 2022-05-17 Yeti Coolers, Llc Luggage
USD960648S1 (en) 2020-12-16 2022-08-16 Yeti Coolers, Llc Container accessory
USD985937S1 (en) 2020-12-16 2023-05-16 Yeti Coolers, Llc Container
USD994438S1 (en) 2020-12-16 2023-08-08 Yeti Coolers, Llc Container
USD1014965S1 (en) 2020-12-16 2024-02-20 Yeti Coolers, Llc Container
USD1014969S1 (en) 2020-12-16 2024-02-20 Yeti Coolers, Llc Container
KR102403467B1 (en) * 2021-11-16 2022-05-30 손민준 Carrier

Similar Documents

Publication Publication Date Title
WO2008001029A1 (en) Apparatus for carrying a load up and down stairs
GB2421713A (en) Load carrier adapted for moving up and down stairs
US20080230339A1 (en) Stair wheeler
US10463123B2 (en) Wheeled suitcase with auxiliary wheels on legs and undercarriage therefor
US6662916B2 (en) Wheeled luggage and associated devices
EP1457131B1 (en) Carrying and adjusting device for a load
US4979598A (en) Suitcase frame
US8662267B1 (en) Luggage for transporting children
US20110247910A1 (en) Luggage with Deployable Undercarriage
US20140271095A1 (en) Stair traversing delivery apparatus
JP2000512530A (en) Roller mechanism for container or cart
US20130033020A1 (en) Convertible cargo container
US9499188B2 (en) Luggage sliders
KR101309226B1 (en) Hand cart
US6149372A (en) Cargo loader
CN107207066A (en) A kind of luggage case
US4852705A (en) Case with extendable wheels and handle
GB2511573A (en) Backpack
WO2015036883A1 (en) Trolley suitcase
DK3038951T3 (en) BODY TRANSFER DEVICE AND A PROCEDURE FOR OPERATING THE DEBT TRANSFER DEVICE
US10343705B1 (en) Stroller having wheels with integral skis
EP3224112B1 (en) Passenger transport carriers
GB2440310A (en) Travel bag with retractable handle and wheeled support frame
EP3535207A1 (en) A conveyor system
DE202006011098U1 (en) Suitcase with wheels comprises a collapsible support which pivots on the rear side of the suitcase and is connected to the lower end of a removable handle by connecting elements

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 06744354

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: RU

122 Ep: pct application non-entry in european phase

Ref document number: 06744354

Country of ref document: EP

Kind code of ref document: A1