WO2010075612A1 - Swivel castor arresting arrangement - Google Patents

Swivel castor arresting arrangement Download PDF

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Publication number
WO2010075612A1
WO2010075612A1 PCT/BG2009/000018 BG2009000018W WO2010075612A1 WO 2010075612 A1 WO2010075612 A1 WO 2010075612A1 BG 2009000018 W BG2009000018 W BG 2009000018W WO 2010075612 A1 WO2010075612 A1 WO 2010075612A1
Authority
WO
WIPO (PCT)
Prior art keywords
arresting
cover
spring
disk
swivel castor
Prior art date
Application number
PCT/BG2009/000018
Other languages
French (fr)
Inventor
Simeon Stanchev
Peter Brown
Original Assignee
"E-M-A- Stanchev & Co. " 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
Application filed by "E-M-A- Stanchev & Co. " Ltd. filed Critical "E-M-A- Stanchev & Co. " Ltd.
Publication of WO2010075612A1 publication Critical patent/WO2010075612A1/en

Links

Classifications

    • 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
    • B60B33/026—Castors in general; Anti-clogging castors with disengageable swivel action, i.e. comprising a swivel locking mechanism being 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
    • B60B33/0002—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture
    • B60B33/0015—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture characterised by adaptations made to castor
    • B60B33/0018—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture characterised by adaptations made to castor in the form of a flat mounting plate
    • 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
    • B60B33/02—Castors in general; Anti-clogging castors with disengageable swivel action, i.e. comprising a swivel locking mechanism
    • B60B33/023—Castors in general; Anti-clogging castors with disengageable swivel action, i.e. comprising a swivel locking mechanism by using friction

Definitions

  • This invention features a swivel castor arresting arrangement for application in the assembly of various types of load-carrying structures, specifically - in the assembly of hospital beds, furniture for handicapped individuals, service tables etc.
  • US Patent No 3890668 features an arresting arrangement between the prongs of a castor fork, with two stages of free swiveling. It incorporates an electromagnet with mobile magnetic core, affixed to mobile arresting elements of the checking arrangement, with action countering the force of a spring, applied in the direction of the arresting elements.
  • US Patent No 6662404 features another such arrangement incorporating a two-arm sub-spring arresting lever, exclusively rotated around its horizontal axis, vertically to the rotation of a swivel castor. Incorporated in it are also two pressure- exerting springs, with force of action sufficient to push the two-arm checking lever aside of swivel castors.
  • the invention treated herein is intended to help out in the development of a swivel castor arrangement wherewith it might be possible "to switch ON/OFF" two or more swivel castors via a central arresting arrangement - one without complexity, and easy to fabricate.
  • the task thus defined has been accomplished by means of the operation of an arresting arrangement (in standby position - i.e. OFF) for swivel castors, comprising: a cover; a spring-action element and an arresting element.
  • a central opening in the cover houses a bushing to which a castor's bearing arm is abutted.
  • a supporting disk is bonded to the bushing.
  • an elastic toroidal cushion with a pipe union feeding "operational fluid"; its one end juts out above the cover's surface.
  • a spring- action element Underneath the disk there is a spring- action element, with its central part abutted to the bushing.
  • the arresting element is bonded to the nether side of the spring-action element, itself bonded to the cover, so that both the arresting element and the spring-action element, plus the cover, could be in an axial motion vis-a-vis a swivel castor's carrying arm and the swivel castor tire.
  • the spring action element features "a spring-profile disk". This, indeed, is a good solution, because the nether surface of the disk provides for the existence of a high-level coefficient of friction, between it and the contact surface of a swivel castor. Advantages stemming from the operation of the arresting arrangement per the invention described: Simultaneous switching ON/OFF of two or more swivel castors via uniform checking efforts, and: simplified make of the arrangement, coupled with easy fabrication.
  • Fig.1 Axonometric illustration of the swivel castor with arresting arrangement (swivel castor stalled);
  • Fig.2. Arresting arrangement per Fig.1. ; cross section; Fig.3. Arresting arrangement per Fig.1. ; Swivel castor, operational; Fig.4. Arresting arrangement cover, with spring - and arresting element;
  • Fig.5. Toroidal cushion, axonometric view
  • Fig.6. Bearing bush and supporting disk, axonometric view. Examples for embodiment of the invention
  • the arrangement featured above (Figs.1 ,2,3,4) comprises: a cover (1); a spring (-action) element (2), and arresting element (3).
  • the cover (1) is with an opening (4) housing a bushing (5), abutted to which (by means of a screw connection - bolt (8) and nut (9)) is the carrying arm (5) of the castor (7).
  • Fixed to the bushing (5) is a supporting disk (10).
  • an elastic toroidal cushion (11) with a union nipple (12) feeding fluid to it.
  • the nipple (12) juts out above the cover's surface.
  • the spring- action element (2) and the arresting element (3) are bonded to the lateral flange (13) of the cover; they, plus the cover (1), could be moved axially to the carrying arm (6) and the swivel castor (7).
  • the spring-action element (2, Fig.4) features an arresting disk.
  • Fig.3 shows the toroidal cushion (11).
  • Fig.6 shows the bushing (5) and the supporting disk (10) bonded together.
  • the periphery of the supporting disk (10) is with projections (cogs), locking with cuts in the flange (13) of the cover (1 ).
  • the disk (3) is continuously pressed to the swivel castor (7) by the spring (2).
  • the cushion (11) When fluid is fed to the cushion (11) it becomes pumped up, thereby overcoming the pressure exerted by the spring (2).
  • the cover then moves axially upward, together with the spring (2) and the arresting disk (3); the swivel castor (7) becomes released.
  • the arresting arrangement described here provides for the existence of the possibility to continuously fix sick-beds, wheelchairs, castor stretchers, servicing tables etc. in a fixed, selected position.
  • Feeding of fluid to the cushion (11) could be provided for by means of the use of elastic hose lengths, bringing fluid from the source of such.

Abstract

Arresting arrangement for swivel castor's controlled motion, comprising: a cover; a spring-action element and an arresting element, the cover (1) is with an opening (4), housing a bushing (5) abutted to which is a carrying arm (6) of a swivel castor (7). A disk (10) is bonded to the bushing (5), wherein between the cover (1) and the disk (10) there is a cushion (11) with a nipple (12), feeding fluid to it; its upper end juts out above the cover (1). Below the disk (10) there is a spring-action element (2) to which an arresting element (3) is bonded, the spring-action element (2) and the arresting element (3) are bonded to the flange (13) of the cover (1); they are in an axial motion to the carrying arm (6) and the swivel castor (7).

Description

Swivel Castor Arresting Arrangement Technical field
This invention features a swivel castor arresting arrangement for application in the assembly of various types of load-carrying structures, specifically - in the assembly of hospital beds, furniture for handicapped individuals, service tables etc.
Previous State of Art
US Patent No 3890668 features an arresting arrangement between the prongs of a castor fork, with two stages of free swiveling. It incorporates an electromagnet with mobile magnetic core, affixed to mobile arresting elements of the checking arrangement, with action countering the force of a spring, applied in the direction of the arresting elements.
US Patent No 6662404 features another such arrangement incorporating a two-arm sub-spring arresting lever, exclusively rotated around its horizontal axis, vertically to the rotation of a swivel castor. Incorporated in it are also two pressure- exerting springs, with force of action sufficient to push the two-arm checking lever aside of swivel castors.
Normally, the arrangements dealt with above are such with action of just one of the castors of, say, hospital beds, castor-stretchers or wheelchairs, with them the checking effort applied might, occasionally, result in an undesired swiveling of the bearing structure, which is particularly dangerous during their use in servicing patients with serious incapacities (handicaps). In order to do away with such risks, efforts have been put in to develop rather sophisticated lever systems, intended to provide for the application of arresting efforts to more than one swivel castor in such cases. Technical Essence of the Invention
The invention treated herein is intended to help out in the development of a swivel castor arrangement wherewith it might be possible "to switch ON/OFF" two or more swivel castors via a central arresting arrangement - one without complexity, and easy to fabricate. In this invention the task thus defined has been accomplished by means of the operation of an arresting arrangement (in standby position - i.e. OFF) for swivel castors, comprising: a cover; a spring-action element and an arresting element. A central opening in the cover houses a bushing to which a castor's bearing arm is abutted.
A supporting disk is bonded to the bushing. Between the cover and the disk there is an elastic toroidal cushion, with a pipe union feeding "operational fluid"; its one end juts out above the cover's surface. Underneath the disk there is a spring- action element, with its central part abutted to the bushing. The arresting element is bonded to the nether side of the spring-action element, itself bonded to the cover, so that both the arresting element and the spring-action element, plus the cover, could be in an axial motion vis-a-vis a swivel castor's carrying arm and the swivel castor tire.
In one of the arrangement's versions, the spring action element features "a spring-profile disk". This, indeed, is a good solution, because the nether surface of the disk provides for the existence of a high-level coefficient of friction, between it and the contact surface of a swivel castor. Advantages stemming from the operation of the arresting arrangement per the invention described: Simultaneous switching ON/OFF of two or more swivel castors via uniform checking efforts, and: simplified make of the arrangement, coupled with easy fabrication.
Attached Drawings
Fig.1. Axonometric illustration of the swivel castor with arresting arrangement (swivel castor stalled);
Fig.2. Arresting arrangement per Fig.1. ; cross section; Fig.3. Arresting arrangement per Fig.1. ; Swivel castor, operational; Fig.4. Arresting arrangement cover, with spring - and arresting element;
Fig.5. Toroidal cushion, axonometric view; Fig.6. Bearing bush and supporting disk, axonometric view. Examples for embodiment of the invention
The arrangement featured above (Figs.1 ,2,3,4) comprises: a cover (1); a spring (-action) element (2), and arresting element (3). The cover (1) is with an opening (4) housing a bushing (5), abutted to which (by means of a screw connection - bolt (8) and nut (9)) is the carrying arm (5) of the castor (7). Fixed to the bushing (5) is a supporting disk (10). Between the cover (1) and the disk (10) there is an elastic toroidal cushion (11) with a union nipple (12) feeding fluid to it. The nipple (12) juts out above the cover's surface. Under the disk (10), there is a spring-action element (2), with its inner side abutted to the bushing (5). The spring- action element (2) and the arresting element (3) are bonded to the lateral flange (13) of the cover; they, plus the cover (1), could be moved axially to the carrying arm (6) and the swivel castor (7). The spring-action element (2, Fig.4) features an arresting disk. Fig.3 shows the toroidal cushion (11). Fig.6 shows the bushing (5) and the supporting disk (10) bonded together. The periphery of the supporting disk (10) is with projections (cogs), locking with cuts in the flange (13) of the cover (1 ). Thus, any not intended swiveling of the arrangement or of one of the swivel castors is thwarted.
Use of the invention
In the version of the arrangement shown in Figs.1 and 2, the disk (3) is continuously pressed to the swivel castor (7) by the spring (2). When fluid is fed to the cushion (11) it becomes pumped up, thereby overcoming the pressure exerted by the spring (2). The cover then moves axially upward, together with the spring (2) and the arresting disk (3); the swivel castor (7) becomes released.
The arresting arrangement described here, provides for the existence of the possibility to continuously fix sick-beds, wheelchairs, castor stretchers, servicing tables etc. in a fixed, selected position. In the context of the version featured herein above, it is possible to turn out an arresting arrangement for each one of the swivel castors of, say, sick-beds. Feeding of fluid to the cushion (11) could be provided for by means of the use of elastic hose lengths, bringing fluid from the source of such.

Claims

- A -Patent Claims
1. Arresting arrangement for swivel castor's controlled motion, comprising: a cover; a spring-action element and an arresting element, the cover (1) is with an opening (4), housing a bushing (5) abutted to which is a carrying arm (6) of a swivel castor (7), a disk (10) is bonded to the bushing (5), between the cover (1) and the disk (10) there is a cushion (11) with a nipple (12), feeding fluid to it; its upper end juts out above the cover (1), wherein below the disk (10) there is a spring-action element (2) to which an arresting element (3) is bonded, the spring-action element (2) and the arresting element (3) are bonded to the flange (13) of the cover (1); they are in an axial motion to the carrying arm (6) and the swivel castor (7).
2. An arresting arrangement per Claim 1 , in which the spring-action element (2) features a spring-like profiled disk.
3. An arresting arrangement per Claim 1 , in which the arresting element (3) features an arresting disk, the nether surface of which provides for the existence of a high level coefficient of friction between it and contact surfaces of swivel castors.
4. An arresting arrangement per Claim 1 , 2 or 3, in which the periphery of the supporting disk (10) is with projections (14), locking up with cuts in the flange (13) of the cover (1 ).
PCT/BG2009/000018 2008-12-29 2009-12-15 Swivel castor arresting arrangement WO2010075612A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BG10110298A BG66260B1 (en) 2008-12-29 2008-12-29 Brake device for rotating drive wheel
BG110298 2008-12-29

Publications (1)

Publication Number Publication Date
WO2010075612A1 true WO2010075612A1 (en) 2010-07-08

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ID=41818748

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BG2009/000018 WO2010075612A1 (en) 2008-12-29 2009-12-15 Swivel castor arresting arrangement

Country Status (2)

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BG (1) BG66260B1 (en)
WO (1) WO2010075612A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1505786A1 (en) * 1964-02-18 1970-03-26 Happe & Co Locking device for movable devices, furniture or the like. existing castors, especially castors to be operated together
US3890668A (en) 1971-01-20 1975-06-24 Tente Rollen Gmbh & Co Lockable castor, in particular swivel castor
US4998320A (en) * 1988-11-03 1991-03-12 Albert Schulte Sohne Gmbh. & Co. Apparatus for movably supporting beds and the like
DE9103178U1 (en) * 1991-03-15 1991-06-06 Kugelfabrik Schulte Gmbh & Co Kg, 5632 Wermelskirchen, De
DE19614626A1 (en) * 1995-04-27 1996-10-31 Gerd Dipl Ing Muennekehoff Locking device for steering rollers
US6662404B1 (en) 2002-08-06 2003-12-16 Kci Licensing, Inc. High load bearing central-braking caster
US20040064915A1 (en) * 2002-10-02 2004-04-08 Harlan Silverstein Pneumatic locking swivel caster

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1505786A1 (en) * 1964-02-18 1970-03-26 Happe & Co Locking device for movable devices, furniture or the like. existing castors, especially castors to be operated together
US3890668A (en) 1971-01-20 1975-06-24 Tente Rollen Gmbh & Co Lockable castor, in particular swivel castor
US4998320A (en) * 1988-11-03 1991-03-12 Albert Schulte Sohne Gmbh. & Co. Apparatus for movably supporting beds and the like
DE9103178U1 (en) * 1991-03-15 1991-06-06 Kugelfabrik Schulte Gmbh & Co Kg, 5632 Wermelskirchen, De
DE19614626A1 (en) * 1995-04-27 1996-10-31 Gerd Dipl Ing Muennekehoff Locking device for steering rollers
US6662404B1 (en) 2002-08-06 2003-12-16 Kci Licensing, Inc. High load bearing central-braking caster
US20040064915A1 (en) * 2002-10-02 2004-04-08 Harlan Silverstein Pneumatic locking swivel caster

Also Published As

Publication number Publication date
BG66260B1 (en) 2012-10-31
BG110298A (en) 2010-06-30

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