US3691590A - Castors for chairs and other articles of furniture - Google Patents

Castors for chairs and other articles of furniture Download PDF

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Publication number
US3691590A
US3691590A US90275A US3691590DA US3691590A US 3691590 A US3691590 A US 3691590A US 90275 A US90275 A US 90275A US 3691590D A US3691590D A US 3691590DA US 3691590 A US3691590 A US 3691590A
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US
United States
Prior art keywords
chair
housing
castor
supporting surface
axis
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.)
Expired - Lifetime
Application number
US90275A
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English (en)
Inventor
Fritz Drabert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Drabert Soehne GmbH and Co
Original Assignee
Drabert Soehne GmbH and Co
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 Drabert Soehne GmbH and Co filed Critical Drabert Soehne GmbH and Co
Application granted granted Critical
Publication of US3691590A publication Critical patent/US3691590A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • ABSTRACT [30] Foreign Application Priority A castor for a chair comprises a wheel rotatably June 18, 1970 Germany ..P 20 29 902.9 mounted in a housina which is pivotal about a substantially vertical axis spaced from the axis of the wheel.
  • U.S. Cl ..l6/l8, 297/310 Th using includes an abutment surface arranged [51] Int. Cl. .3601: 33/00 on th ther side of the vertical axis to the axis of the [58] Field of Search ..16/18, 35, 34; 297/310; wh l and ex ending below the axis of the wheel.
  • the present invention relates to castors for articles of furniture, for example, chairs and the like.
  • the object of the invention is to overcome this disadvantage.
  • a castor comprising a housing, a wheel rotatably mounted in said housing, and means for mounting said housing for pivotal movement about an upwardly extending axis spaced from the axis of rotation of the wheel, the improvement comprising, abutmerit means carried by said housing and arranged to contact a surface on which said castor is supported when said upwardly-extending axis is tilted.
  • a housing in a castor supporting an article of furniture on a surface, a housing, a wheel rotatably mounted in said housing, and means pivotally mounting said housing on said article for pivotal movement relative thereto about a substantially vertical axis spaced from the axis of rotation of the wheel, the improvement comprising abutment means mounted on said housing, said abutment means being spaced on the other side of said vertical axis to the axis of rotation of the wheel and extending below the axis of rotation of the wheel.
  • FIG. I is a side elevation, partialIy in section of one form of castor in accordance with the present invention.
  • FIG. 2 is a plan of the castor shown in FIG. 1;
  • FIG. 3 is a side elevation, partially in section, of another form of castor in accordance with the present invention.
  • FIG. 4 is a plan of the castor shown in FIG. 3;
  • FIG. 5 is a plan of a modified form of the castor shown in FIG. 3;
  • FIG. 6 is a side elevation of a chair mounted on castors proposed hitherto;
  • FIG. 7 is a side elevation of a chair mounted on castors in accordance with the invention.
  • FIG. 8 is a perspective view of a further form of castor in accordance with the present invention.
  • the castor wheel 1 is accommodated in a housing 2 constructed to prevent the chair from overturning.
  • the housing 2 comprises abutment means in the form of a substantially straight bearing edge 4 arranged on the other side of the vertical pivotal axis 3 of the castor to the rotational axis 6 of the wheel I and extends below the rotational axis 6 of the wheel I.
  • FIGS. 3 and 4 The embodiment shown in FIGS. 3 and 4 is similar to the previous embodiment except that the abutment means is in the form of a lip 5 which defines a flat bearing face located in a corresponding position to the edge
  • the bearing edge 4 and bearing face 5 lie substantially parallel to the rotational axis of the wheel I and the bearing face 5 terminates in a straight edge lying parallel to the rotational axis of the wheel I.
  • the bearing face 5a is widened, thereby increasing the area of the abutment means.
  • the bearing edge 4 or the bearing face 5, 50 carries a facing (not shown in the drawings) on the surface thereof which lies towards the floor.
  • This facing comprises a material which will increase the coefficient of friction between the bearing edge or face and the floor but which does not damage the floor.
  • the distance a between the bearing edge 4 or bearing face 5, 5a and the floor is relatively small, for example about 3 mm., depending on the nature of the floor.
  • the distance b between the pivotal axis 3 of the castor and the bearing edge 4 or bearing face 5, 5a is of importance in determining the effectiveness of the castor in preventing the chair from overturning. In the castors particularly described, this distance is between about 20 and 40 mm., although the invention is naturally not limited to this particular range. What matters is that there should be a sufficient leverage between the pivotal axis 3 and the bearing edge 4 or bearing face 5, 5a.
  • the bearing edge 4 or bearing face 5, 50 comes to bear on the floor as soon as the angle of tilt amounts to about 4, so that the wheel 1 cannot rotate and the chair is prevented from moving along the floor.
  • Contact of the bearing edge or face with the floor also serves to increase the spread of the chair legs by the distance b.
  • the abutment means i.e., the bearing edge 4 and bearing faces 5, 5a form an integral part of the housing 2.
  • the abutment means can alternatively be mounted on the housing as shown in FIG. 8. in the embodiment of FIG. 8, the abutment means in effect defines a flat bearing face corresponding to the face 5.
  • a wheel rotatably mounted in said housing for rotation about a substantially horizontal axis means mounting said housing on said base for pivotal movement relative thereto about a substantially vertical axis spaced from the said horizontal axis on one side thereof, and
  • abutment means rigid with said housing and spaced from the vertical axis on the other side of the horizontal axis, said abutment means having a straight end edge extending parallel to the said horizontal axis and lateral edges extending transversely to the end edge, the end edge and the lateral edges lying in an imaginary plane below the said horizontal axis, when the chair is occupied and each said castor is in contact with supporting surface, the abutment means being spaced from the supporting surface with the said plane being inclined to the supporting surface, and when the chair is tilted whereby at least one castor is raised from the supporting surface, the abutment means of other castors contacts the supporting surface with the said imaginary plane of the abutment means lying in the plane of the supporting surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Special Chairs (AREA)
  • Legs For Furniture In General (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs Characterized By Structure (AREA)
US90275A 1970-06-18 1970-11-17 Castors for chairs and other articles of furniture Expired - Lifetime US3691590A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702029902 DE2029902A1 (de) 1970-06-18 1970-06-18 Schwenkbare Laufrolle, insbesondere für Sitzmöbel

Publications (1)

Publication Number Publication Date
US3691590A true US3691590A (en) 1972-09-19

Family

ID=5774224

Family Applications (1)

Application Number Title Priority Date Filing Date
US90275A Expired - Lifetime US3691590A (en) 1970-06-18 1970-11-17 Castors for chairs and other articles of furniture

Country Status (6)

Country Link
US (1) US3691590A (de)
BE (1) BE756701A (de)
CH (1) CH530877A (de)
DE (1) DE2029902A1 (de)
FR (1) FR2095322B1 (de)
GB (1) GB1291503A (de)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977040A (en) * 1975-02-27 1976-08-31 Sugatsune Industrial Co., Ltd. Castor
WO1985005020A1 (en) * 1984-04-27 1985-11-21 Hilvar Svensk A device for facilitating the displacement of chairs
US4653710A (en) * 1984-06-26 1987-03-31 F. F. Seeley Nominees Pty. Ltd. Support trolley
US5390393A (en) * 1993-01-22 1995-02-21 Metro Industries, Inc. Caster with a fouling-resistant bearing cup feature
US6422580B1 (en) * 2000-07-19 2002-07-23 Wendell Hunter Shopping cart anti-tip bracket
US20030111887A1 (en) * 2000-02-16 2003-06-19 Wolfgang Deisig Chair base
US20040046486A1 (en) * 2002-09-09 2004-03-11 Becker Designed, Inc. Wheel for audio-visual component support system and an audio-visual component support system
US20050230337A1 (en) * 2004-04-15 2005-10-20 Krystal Krull Rolling storage rack system
US20050241889A1 (en) * 2004-04-30 2005-11-03 Carttronics Llc Shopping cart tilt and tip prevention device
US20080127451A1 (en) * 2006-11-30 2008-06-05 Bruno Adrian A Caster with Kickstand
US20080309389A1 (en) * 2007-06-15 2008-12-18 French John R System for preventing shopping cart push-out theft
US20090179760A1 (en) * 2008-01-10 2009-07-16 Nebolon Joseph F Caster system activator
US20110138571A1 (en) * 2009-12-15 2011-06-16 Po-Chuan Tsai Castor that can be Detached and Cleaned Easily and Quickly
US20140000064A1 (en) * 2012-06-29 2014-01-02 Waxman Consumer Products Group, Inc. Repel assembly and method
US20150130337A1 (en) * 2013-11-14 2015-05-14 Snap-On Incorporated Roll cab stability device
US9790030B2 (en) 2012-06-29 2017-10-17 Waxman Consumer Products Group Inc. Repel assembly and method
US9937750B1 (en) * 2017-02-14 2018-04-10 Chris Nelson Caster wheel tilt bar
US20190092094A1 (en) * 2017-09-27 2019-03-28 Efalock Professional Tools Gmbh Work aid for a hairdresser
US20190329589A1 (en) * 2018-04-26 2019-10-31 Kubota Corporation Work vehicle
USD917945S1 (en) * 2018-06-11 2021-05-04 Exemplis Llc Wheel assembly
US20220048320A1 (en) * 2020-08-17 2022-02-17 Nadia Lazzarino Caster anti-tilt device
USD958638S1 (en) 2018-06-11 2022-07-26 Exemplis Llc Wheel assembly
USD976037S1 (en) 2020-02-14 2023-01-24 Exemplis Llc Wheel assembly with contrasting color ring

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2328469C3 (de) * 1973-06-05 1984-09-27 Drabert Söhne Minden (Westf.), 4950 Minden Schwenkbare Laufrolle für Sitzmöbel
CN106579831A (zh) * 2016-12-30 2017-04-26 天津效岩科技有限公司 一种座椅的滚轮防滑装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1731640A (en) * 1927-06-08 1929-10-15 Thurlby Truman Caster
US2280732A (en) * 1940-01-31 1942-04-21 Thum Martin Convertible rocking chair
US2423659A (en) * 1943-11-12 1947-07-08 William H Rabe Antiskid device for chairs
US2566853A (en) * 1947-04-04 1951-09-04 John P Reinhardt Caster
US2613389A (en) * 1949-09-15 1952-10-14 Roy A Cramer Combined foot and spring supported caster
US2812041A (en) * 1953-08-10 1957-11-05 Rol Fol Table Inc Roller brake

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3083398A (en) * 1960-08-08 1963-04-02 Calvin D Swalm Anti-theft grocery cart caster
US3048420A (en) * 1960-08-12 1962-08-07 R A Macplum Ind Inc Three-wheeled shopping cart

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1731640A (en) * 1927-06-08 1929-10-15 Thurlby Truman Caster
US2280732A (en) * 1940-01-31 1942-04-21 Thum Martin Convertible rocking chair
US2423659A (en) * 1943-11-12 1947-07-08 William H Rabe Antiskid device for chairs
US2566853A (en) * 1947-04-04 1951-09-04 John P Reinhardt Caster
US2613389A (en) * 1949-09-15 1952-10-14 Roy A Cramer Combined foot and spring supported caster
US2812041A (en) * 1953-08-10 1957-11-05 Rol Fol Table Inc Roller brake

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977040A (en) * 1975-02-27 1976-08-31 Sugatsune Industrial Co., Ltd. Castor
WO1985005020A1 (en) * 1984-04-27 1985-11-21 Hilvar Svensk A device for facilitating the displacement of chairs
US4653710A (en) * 1984-06-26 1987-03-31 F. F. Seeley Nominees Pty. Ltd. Support trolley
US5390393A (en) * 1993-01-22 1995-02-21 Metro Industries, Inc. Caster with a fouling-resistant bearing cup feature
US5593461A (en) * 1993-01-22 1997-01-14 Metro Industries, Inc. Method of manufacturing a caster with a fouling-resistant bearing cup feature
US20030111887A1 (en) * 2000-02-16 2003-06-19 Wolfgang Deisig Chair base
US6422580B1 (en) * 2000-07-19 2002-07-23 Wendell Hunter Shopping cart anti-tip bracket
US7007958B2 (en) 2002-09-09 2006-03-07 Becker Designed, Inc. Wheel for audio-visual component support system and an audio-visual component support system
US20040046486A1 (en) * 2002-09-09 2004-03-11 Becker Designed, Inc. Wheel for audio-visual component support system and an audio-visual component support system
US20050230337A1 (en) * 2004-04-15 2005-10-20 Krystal Krull Rolling storage rack system
US7413091B2 (en) * 2004-04-15 2008-08-19 Big O Tires, Inc. Rolling storage rack system
US20050241889A1 (en) * 2004-04-30 2005-11-03 Carttronics Llc Shopping cart tilt and tip prevention device
US7225903B2 (en) * 2004-04-30 2007-06-05 Carttronics, Llc Shopping cart tilt and tip prevention device
US20080127451A1 (en) * 2006-11-30 2008-06-05 Bruno Adrian A Caster with Kickstand
US20080309389A1 (en) * 2007-06-15 2008-12-18 French John R System for preventing shopping cart push-out theft
US20090179760A1 (en) * 2008-01-10 2009-07-16 Nebolon Joseph F Caster system activator
US20110138571A1 (en) * 2009-12-15 2011-06-16 Po-Chuan Tsai Castor that can be Detached and Cleaned Easily and Quickly
US8887353B2 (en) * 2012-06-29 2014-11-18 Waxman Consumer Products Group Inc. Repel assembly and method
US9242666B2 (en) 2012-06-29 2016-01-26 Waxman Consumer Products Group Inc. Repel assembly and method
US9790030B2 (en) 2012-06-29 2017-10-17 Waxman Consumer Products Group Inc. Repel assembly and method
US20140000064A1 (en) * 2012-06-29 2014-01-02 Waxman Consumer Products Group, Inc. Repel assembly and method
US20150130337A1 (en) * 2013-11-14 2015-05-14 Snap-On Incorporated Roll cab stability device
US9375078B2 (en) * 2013-11-14 2016-06-28 Snap-On Incorporated Roll cab stability device
US9937750B1 (en) * 2017-02-14 2018-04-10 Chris Nelson Caster wheel tilt bar
US10710403B2 (en) * 2017-09-27 2020-07-14 Efalock Professional Tools Gmbh Work aid for a hairdresser
US20190092094A1 (en) * 2017-09-27 2019-03-28 Efalock Professional Tools Gmbh Work aid for a hairdresser
US20190329589A1 (en) * 2018-04-26 2019-10-31 Kubota Corporation Work vehicle
US11110746B2 (en) * 2018-04-26 2021-09-07 Kubota Corporation Work vehicle
USD917945S1 (en) * 2018-06-11 2021-05-04 Exemplis Llc Wheel assembly
USD958638S1 (en) 2018-06-11 2022-07-26 Exemplis Llc Wheel assembly
USD976037S1 (en) 2020-02-14 2023-01-24 Exemplis Llc Wheel assembly with contrasting color ring
USD1039307S1 (en) 2020-02-14 2024-08-20 Exemplis Llc Wheel assembly with contrasting color ring
US20220048320A1 (en) * 2020-08-17 2022-02-17 Nadia Lazzarino Caster anti-tilt device
US11673427B2 (en) * 2020-08-17 2023-06-13 Cart Source Llc Caster anti-tilt device

Also Published As

Publication number Publication date
FR2095322A1 (de) 1972-02-11
CH530877A (de) 1972-11-30
BE756701A (fr) 1971-03-01
DE2029902A1 (de) 1971-12-30
GB1291503A (en) 1972-10-04
FR2095322B1 (de) 1976-03-19

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